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Technical Committee on

Sprinkler System Discharge Criteria

M E M O R A N D U M

DATE: May 21, 2014

TO: Principal and Alternate Members of the Technical Committee on Sprinkler System

Discharge Criteria

FROM: Matt Klaus, Principal Fire Protection Engineer/NFPA Staff Liaison

SUBJECT: AUT-SSD AGENDA PACKAGE – A2015 Second Draft Meeting

________________________________________________________________________

Enclosed is the agenda for the Second Draft meeting for NFPA 13, Standard for the Installation

of Sprinkler Systems. NFPA 13 has entered the Annual 2015 revision cycle and will produce a

2016 Edition. It is imperative that you review the attached public comments in advance, with your

ideas and substantiations for your views. If you have alternate suggestions for text changes, please

come prepared with the words and respective substantiation.

For administrative questions, please feel free to contact Elena Carroll at (617) 984-7952.

For technical questions, please feel free to contact Matt Klaus at (617) 984-7448. You can

also reach either of us via e-mail at [email protected] or [email protected]. We look forward to

meeting everyone in Del Mar, CA at the San Diego Marriott Del Mar.

mailto:[email protected]

mailto:[email protected]

Table of Contents

Part 1 - Meeting Agenda

Part 2 - Committee Address List

Part 3 – New Process Worksheets

Part 4 – A2015 First Draft Meeting Minutes

Part 5 - A2015 Key Dates

Part 6- SSD Public Comments

PART 1 –

MEETING AGENDA

Technical Committee on

Sprinkler System Discharge Criteria

Second Draft Meeting

June 26-27, 2014 San Diego Marriott Del Mar

11966 El Camino Real

San Diego, CA 92130

AGENDA

Thursday June 26, 2104

1. Call to Order – 8:00 AM

2. Introductions of Members and Staff

3. Review and Approval of A2015 First Draft Meeting Minutes

4. Review of A2015 Revision Cycle and Meeting Schedule

5. Review of Distributed Material and Workload

b. Overview of Public Comments

c. Overview of Potential Committee Second Revisions

6. Task Group Reports (order subject to change)

a. Metric Task Group Update (Hjorth)

b. Commodity Classification Task Group Report (Baker)

c. Storage Task Group Report (Golinveaux)

d. Chapter 23 and 24 Task Group (Denhardt)

e. Chapter 11 Task Group Report (Osburn)

f. Extract Task Group Update (Lafleur)

7. Review Public Comments

Friday, June 27, 2014

8. Reconvene 8:00AM (Time Subject to Change)

9. Continue Task Group Reports/Review Public Comments/Generate Second Revisions

10. Adjournment TBD

PART 2 –

COMMITTEE ADDRESS LIST

Address List No PhoneSprinkler System Discharge Criteria AUT-SSD

Automatic Sprinkler Systems

Matthew J. Klaus05/19/2014

AUT-SSD

Russell B. Leavitt

ChairTelgian Corporation2615 South Industrial Park AvenueTempe, AZ 85282-1821Alternate: Tracey D. Bellamy

SE 03/05/2012AUT-SSD

Carl P. Anderson

PrincipalThe Fire Protection International Consortium1420 Marvin Road NE, #432Lacey, WA 98516Washington State Association of Fire Marshals

E 7/20/2000

AUT-SSD

Weston C. Baker, Jr.

PrincipalFM Global1151 Boston Providence TurnpikePO Box 9102Norwood, MA 02062-9102Alternate: Angele Morcos

I 7/19/2002AUT-SSD

Charles O. Bauroth

PrincipalLiberty Mutual Property36 Willow LaneUxbridge, MA 01569Alternate: Tanya M. Glumac

I 1/18/2001

AUT-SSD

Kerry M. Bell

PrincipalUL LLC333 Pfingsten RoadNorthbrook, IL 60062-2096Alternate: Pravinray D. Gandhi

RT 10/10/1997AUT-SSD

Robert G. Caputo

PrincipalFire & Life Safety AmericaConsolidated Fireprotection, Inc.657 Cantara LaneVista, CA 92081Alternate: Elley Klausbruckner

SE 10/18/2011

AUT-SSD

Thomas G. Deegan

PrincipalThe Viking Group, Inc.3033 Orchard Vista SE, Suite 308Grand Rapids, MI 49546Alternate: Martin H. Workman

M 7/12/2001AUT-SSD

John August Denhardt

PrincipalStrickland Fire Protection, Inc.5113 Berwyn RoadCollege Park, MD 20740American Fire Sprinkler AssociationInstaller/MaintainerAlternate: Steven J. Scandaliato

IM 1/16/1998

AUT-SSD

James Dockrill

PrincipalJ&S Fire Sprinkler Design & Consulting55 Woodrow StreetSt. Catharines, ON L2P 2A4 CanadaCanadian Automatic Sprinkler AssociationAlternate: Matthew Osburn

IM 08/09/2012AUT-SSD

James E. Golinveaux

PrincipalTyco Fire Protection Products1467 Elmwood AvenueCranston, RI 02910Alternate: Terry L. Victor

M 10/10/1997

AUT-SSD

Bo Hjorth

PrincipalAlbaCon ABBox 619Nacka, 13121 SwedenAlternate: Joakim Bauer

SE 3/21/2006AUT-SSD

Donald Hopkins, Jr.

PrincipalHughes Associates, Inc.3610 Commerce Drive, Suite 817Baltimore, MD 21227-1652Alternate: Mark Hopkins

SE 9/30/2004

1




AUT-SSD

Roland J. Huggins

PrincipalAmerican Fire Sprinkler Association, Inc.12750 Merit Drive, Suite 350Dallas, TX 75251American Fire Sprinkler AssociationDesignAlternate: Jack A. Medovich


Kenneth E. Isman

PrincipalNational Fire Sprinkler Association, Inc.40 Jon Barrett RoadPatterson, NY 12563-2164National Fire Sprinkler AssociationDesign TechnicianAlternate: Jon R. Ackley

M 7/26/2007

AUT-SSD

Sultan M. Javeri

PrincipalSC Engineering2 Impasse Du GuernehlieLa Trinite, Surzur, 56190 France


Larry Keeping

PrincipalProfessional Loss Control3413 Wolfedale Road, Suite 6Mississauga, ON L5C 1V8 Canada

SE 10/10/1997

AUT-SSD

William E. Koffel

PrincipalKoffel Associates, Inc.8815 Centre Park Drive, Suite 200Columbia, MD 21045-2107Alternate: Mark J. Aaby

SE 10/1/1999AUT-SSD

A. Christine LaFleur

PrincipalSandia National LaboratoriesBuilding Safety & Assurance DepartmentPO Box 5800, MS-0909Albuquerque, NM 87185-0909Alternate: Alice B. Muna

U 04/05/2001

AUT-SSD

Kenneth W. Linder

PrincipalSwiss Re2 Waterside Crossing, Suite 200Windsor, CT 06095

I 7/28/2006AUT-SSD

Brian Mosberian

PrincipalCity of Phoenix200 West WashingtonPhoenix, AZ 85003

E 03/07/2013

AUT-SSD

Thomas L. Multer

PrincipalReliable Automatic Sprinkler Company, Inc.1470 Smith Grove RoadLiberty, SC 29657National Fire Sprinkler AssociationManufacturerAlternate: Peter W. Thomas

M 10/10/1997AUT-SSD

Garner A. Palenske

PrincipalAon Fire Protection Engineering Corporation11770 Bernardo Plaza Court, Suite 116San Diego, CA 92128Alternate: Daniel J. O'Connor

I 7/20/2000

AUT-SSD

Richard Pehrson

PrincipalPehrson Fire PC7455 France Avenue South, Suite 271Edina, MN 55435International Fire Marshals AssociationAlternate: Daniel A. Kaiser

E 7/22/1999AUT-SSD

Kenneth R. Schneider

PrincipalSprinkler Fitters LU 268 JATC1544 South 3rd StreetSt. Louis, MO 63104United Assn. of Journeymen & Apprentices of thePlumbing & Pipe Fitting IndustryAlternate: Robert C. Holliday

L 03/05/2012

2




AUT-SSD

Peter T. Schwab

PrincipalWayne Automatic Fire Sprinklers, Inc.222 Capitol CourtOcoee, FL 34761-3033

IM 8/2/2010AUT-SSD

Michael D. Sides

PrincipalXL Global Asset Protection Services1360 Olympia Park CircleOcoee, FL 34761Alternate: Mark A. Bowman

I 7/16/2003

AUT-SSD

Gary T. Smith

PrincipalDACS, Inc.PO Box 161Great Meadows, NJ 07838Rack Manufacturers InstituteAlternate: Gerald R. Schultz

M 08/09/2012AUT-SSD

Jack W. Thacker

PrincipalAllan Automatic Sprinkler Corp. of So. California3233 Enterprise StreetBrea, CA 92821-6239National Fire Sprinkler AssociationContractorAlternate: George W. Stanley

IM 10/10/1997

AUT-SSD

Douglas Wilson

PrincipalCity of San Diego1222 First Avenue, MS 401San Diego, CA 92101

E 03/03/2014AUT-SSD

William B. Smith

Voting AlternateCode Consultants, Inc.2043 Woodland Parkway, Suite 300St. Louis, MO 63146-4235Voting Alt. to CCI Rep.

SE 08/09/2012

AUT-SSD

Craig R. Studer

Voting AlternateThe RJA Group, Inc.600 West Fulton Street, Suite 500Chicago, IL 60661Voting Alt. to RJA Rep.

SE 07/29/2013AUT-SSD

Mark J. Aaby

AlternateKoffel Associates, Inc.8815 Centre Park Drive, Suite 200Columbia, MD 21045-2107Principal: William E. Koffel

SE 3/4/2008

AUT-SSD

Jon R. Ackley

AlternateDalmatian Fire, Inc.5670 West 73rd StreetIndianapolis, IN 46278National Fire Sprinkler AssociationDesign TechnicianPrincipal: Kenneth E. Isman

M 10/29/2012AUT-SSD

Joakim Bauer

AlternateAlbaCon ABBox 619Nacka, 13121 SwedenPrincipal: Bo Hjorth

SE 10/29/2012

AUT-SSD

Tracey D. Bellamy

AlternateTelgian Corporation900 Circle 75 Parkway, Suite 680Atlanta, GA 30339Principal: Russell B. Leavitt

SE 1/10/2008AUT-SSD

Mark A. Bowman

AlternateXL Global Asset Protection Services13467 Chevington DrivePickerington, OH 43147Principal: Michael D. Sides

I 7/16/2003

3




AUT-SSD

Pravinray D. Gandhi

AlternateUL LLC333 Pfingsten RoadNorthbrook, IL 60062-2096Principal: Kerry M. Bell

RT 4/5/2001AUT-SSD

Tanya M. Glumac

AlternateLiberty Mutual Property20 Riverside RoadWeston, MA 02493-2231Principal: Charles O. Bauroth

I 3/4/2008

AUT-SSD

Robert C. Holliday

AlternateSprinkler Fitters LU 268 JAC1544 South 3rd StreetSt. Louis, MO 63104United Assn. of Journeymen & Apprentices of thePlumbing & Pipe Fitting IndustryPrincipal: Kenneth R. Schneider

L 10/29/2012AUT-SSD

Mark Hopkins

AlternateHughes Associates, Inc.3610 Commerce Drive, Suite 817Baltimore, MD 21227-1652Principal: Donald Hopkins, Jr.

SE 10/29/2012

AUT-SSD

Daniel A. Kaiser

AlternateMinnesota Department of Public SafetyState Fire Marshal Division203 SW 3rd StreetMedford, MN 55049International Fire Marshals AssociationPrincipal: Richard Pehrson

E 03/05/2012AUT-SSD

Elley Klausbruckner

AlternateKlausbruckner & Associates, Inc.4105 Sorrento Valley BoulevardSan Diego, CA 92121Principal: Robert G. Caputo

SE 10/29/2012

AUT-SSD

Jack A. Medovich

AlternateFire & Life Safety America7526 Connelley Drive, Suite LHanover, MD 21076American Fire Sprinkler AssociationDesignPrincipal: Roland J. Huggins

IM 7/12/2001AUT-SSD

Angele Morcos

AlternateFM Global1151 Boston-Providence TurnpikeNorwood, MA 02062Principal: Weston C. Baker, Jr.

I 07/29/2013

AUT-SSD

Alice B. Muna

AlternateSandia National LaboratoriesPO Box 5800, MS-0909Albuquerque, NM 87185Principal: A. Christine LaFleur

U 10/29/2012AUT-SSD

Daniel J. O'Connor

AlternateAon Fire Protection Engineering4 Overlook PointLincolnshire, IL 60069-4302Principal: Garner A. Palenske

I 10/27/2009

AUT-SSD

Matthew Osburn

AlternateCanadian Automatic Sprinkler Association335 Renfrew Drive, Suite 302Markham, ON L3R 9S9 CanadaPrincipal: James DockrillVoting Alt. to CASA Rep.


Steven J. Scandaliato

AlternateSDG, LLC5961 North Mona Lisa RoadTucson, AZ 85741American Fire Sprinkler AssociationInstaller/MaintainerPrincipal: John August Denhardt

IM 8/9/2011

4




AUT-SSD

Gerald R. Schultz

AlternateThe FPI Consortium, Inc.1202N 75th Street, #279Downers Grove, IL 60516Rack Manufacturers InstitutePrincipal: Gary T. Smith

M 08/09/2012AUT-SSD

George W. Stanley

AlternateWiginton Fire Protection Engineering, Inc.699 Aero LaneSanford, FL 32771National Fire Sprinkler AssociationContractorPrincipal: Jack W. Thacker

IM 1/16/2003

AUT-SSD

Peter W. Thomas

AlternateVictaulic Company4901 Kesslersville RoadEaston, PA 18040-6714National Fire Sprinkler AssociationManufacturerPrincipal: Thomas L. Multer

M 01/18/2001AUT-SSD

Terry L. Victor

AlternateTyco/SimplexGrinnell705 Digital Drive, Suite NLinthicum, MD 21090Principal: James E. Golinveaux

M 10/29/2012

AUT-SSD

Martin H. Workman

AlternateThe Viking Corporation210 North Industrial Park RoadHastings, MI 49058Principal: Thomas G. Deegan

M 1/15/2004AUT-SSD

Barry M. Lee

Nonvoting MemberTyco International16 Payten StreetKogarah Bay, NSW 2217 Australia

M 10/10/1997

AUT-SSD

Matthew J. Klaus

Staff LiaisonNational Fire Protection Association1 Batterymarch ParkQuincy, MA 02169-7471

12/16/2010

5

PART 3 –

NEW PROCESS WORKSHEETS

NEW PROCESS ACTIONS AND MOTIONS

Possible Action #1: Accept Public Comment (exactly as it is)

Action Required Sample motion

Create a Second Revision I move to create a Second Revision using PC #

______.

Possible action #2: Reject but see (revise submitted text)


Step 1 Create a Second Revision based on a

Public Comment

I move to create a Second Revision based on PC # _____with the following changes to the text . .

.

Step 2 If the revision is related to multiple PCs,

respond to all of them together using the cart function

I move to create a Second Revision based on PC # ____and incorporating PC #s _____with the

following changes to the text . . .

Possible action #3: Reject (no change to the standard)


Generate a statement (substantiation) I move to reject PC # ____ with the following

substantiation . . .

Possible Action #4: Reject but hold (new material)


Reject Public Comment for this cycle, but

save for next revision cycle

I move to reject PC # ____ but hold it for consideration during the First Draft meeting next

cycle.

PART 4 –

A2015 FIRST DRAFT MEETING MINUTES

TC on Sprinkler System Discharge Criteria

First Draft Meeting

Union Station Hotel

Nashville, Tennessee

August 25-26, 2013

Attendees:

See attached list of attendees.

1. Russ Leavitt (TC Chair) called the meeting to order at 8:00 am and began

introductions.

2. The A2012 ROC minutes were approved.

3. Matt Klaus gave the staff report and a presentation on the meeting procedures.

4. Russ Leavitt discussed the logistics for the meeting and the order of the task

group reporting.

5. The committee processed the public input that was included in the meeting

agenda. See the First Draft Report for the official actions on the public input and

the First Revisions created by the TC.

6. As part of the TC review of the FPRF “exposed expanded plastic report”, the TC

considered two different design approaches for inclusion in Chapter 17. The first

design approach contemplated a 12 sprinkler design, while the second

contemplated a 15 sprinkler design. The TC vote on this topic was as follows:

15 Sprinkler Design – 18 Votes

12 Sprinkler Design – 8 Votes

Based on this vote, the TC chose to prepare a First Revision which included a 15

sprinkler design for exposed, expanded group A plastics in racks. See section

17.3.3.5.5 in FR-301 for more information.

7. New Business: The TC discussed several topics that will be studied by task

groups prior to the Second Draft Meeting. These topics and assignments are as

follows:

i) Water Supply Data Task Group- SSD will work with members of the

Correlating Committee, PRI and NFPA 14 to further study the need for

guidance on water supply data for sprinkler/standpipe systems. Task group

members are as follows:

Bob Caputo (SSD) – TG Leader

Tanya Glumac (PRI)

Bob Morgan (PRI)

Roland Asp (PRI)

Will Smith (SSD)

Jon Ackley (SSD)

Shawn Shepherd (SSD)

ii) Task Group for Redundancy Task Group – This task group will review the

storage chapters to see if there is a way to consolidate some of the redundancy

in the tables and narrative. Task group members are as follows:

Ken Linder – TG Leader

Roland Asp

Chris LaFleur

Tom Deegan

Gerry Schultz

iii) Metric Task Group – The metric task group will prepare chapter-by-chapter

“conversion tables to distribute to the individual technical committees prior to

the SD meeting in June.

iv) Extract Task Group – The extract task will prepare a report prior to the second

draft meeting outlining the desired changes to the extract chapter.

v) The individual chapter task groups will also need to meet prior to the SD

meetings. This can be done over the phone or meeting space will be made

available on the day before the SSD SD meeting begins.

8. The Second Draft meeting is scheduled for Summer 2014 at a date and location to

be determined.

9. Meeting adjourned at 5:00 pm on August 26.

Attendees

Principals:

Russell Leavitt, Chair

Carl Anderson

Weston Baker

Charles Bauroth

Kerry Bell

Thomas Brown

Robert Caputo

Thomas Deegan

John Denhardt

James Dockrill

Donald Hopkins

Roland Huggins

Kenneth Isman

Sultan Javeri

Larry Keeping

William Koffel

A. LaFleur

Kenneth Linder

Thomas Multer

Garner Palenske

Richard Pehrson

Kenneth Schneider

Peter Schwab

Michael Sides

Gary Smith

Jack Thacker

Steven Wolin

Alternates:

Jon Ackley

Joakim Bauer

Tracey Bellamy

Elley Klausbruckner Angele Marcos

Jack Medovich

Alice Muna

Steven Scandaliato

Gerald Schultz

Shawn Shepherd

William Smith

George Stanley

Peter Thomas

Terry Victor

Matthew Klaus, NFPA Staff Liaison

Guests:

Audrey Goldstein

Chad Duffy

Mark Fessenden

Scott Franson

William Smith

Mark Downing

Karl Wiegand

Darren Meyers

PART 5 –

A2015 KEY DATES

2015 ANNUAL REVISION CYCLE *Public Input Dates may vary according to standards and schedules for Revision Cycles may change. Please check the NFPA Website for the most up‐to‐date information on Public Input Closing Dates and schedules at

www.nfpa.org/document # (i.e. www.nfpa.org/101) and click on the Next Edition tab.

Process Stage

Process Step

Dates for

TC

Dates forTC with CC

Public Input Closing Date* 7/8/2013 7/8/2013

Final Date for TC First Draft Meeting 12/13/2013 9/13/2013

Public Input Posting of First Draft and TC Ballot 1/31/2014 10/25/2013

Stage Final date for Receipt of TC First Draft ballot 7/21/2014 11/15/2013

(First Draft) Final date for Receipt of TC First Draft ballot ‐ recirc 2/28/2014 11/22/2013

Posting of First Draft for CC Meeting 11/29/2013

Final date for CC First Draft Meeting 1/10/2014

Posting of First Draft and CC Ballot 1/31/2014

Final date for Receipt of CC First Draft ballot 2/21/2014

Final date for Receipt of CC First Draft ballot ‐ recirc 2/28/2014

Post First Draft Report for Public Comment 3/7/2014 3/7/2014

Public Comment Closing Date for Paper Submittal* 4/11/2014 4/11/2014

Public Comment Closing Date for Online Submittal (e‐PC)* 5/16/2014 5/16/2014

Final Date to Publish Notice of Consent Documents (Standards that received no Comments)

5/30/2014 5/30/2014

Appeal Closing Date for Consent Standards (Standards that received no Comments)

6/13/2014 6/13/2014

Final date for TC Second Draft Meeting 10/31/2014 7/25/2014

Comment Posting of Second Draft and TC Ballot 12/12/2014 9/5/2014

Stage Final date for Receipt of TC Second Draft ballot 1/2/2015 9/26/2014

(Second Final date for receipt of TC Second Draft ballot ‐ recirc 1/9/2015 10/3/2014

Draft) Posting of Second Draft for CC Meeting 10/10/2014

Final date for CC Second Draft Meeting 11/21/2014

Posting of Second Draft for CC Ballot 12/12/2014

Final date for Receipt of CC Second Draft ballot 1/2/2015

Final date for Receipt of CC Second Draft ballot ‐ recirc 1/9/2015

Post Second Draft Report for NITMAM Review 1/16/2015 1/16/2015

Tech Session Notice of Intent to Make a Motion (NITMAM) Closing Date 3/6/2015 3/6/2015

Preparation Posting of Certified Amending Motions (CAMs) and Consent Standards

5/1/2015 5/1/2015

(& Issuance) Appeal Closing Date for Consent Standards 5/16/2015 5/16/2015

SC Issuance Date for Consent Standards 5/26/2015 5/26/2015

Tech Session Association Meeting for Standards with CAMs 6/22‐25/2016 6/22‐25/2016

Appeals and Appeal Closing Date for Standards with CAMs 7/15/2015 7/15/2015

Issuance SC Issuance Date for Standards with CAMs 8/20/2015 8/20/2015

Approved___ October 18, 2011 _ Revised__March 7, 2013_____________

PART 6 –

PUBLIC COMMENTS

Public Comment No. 102-NFPA 13-2014 [ Global Input ]

Tables 17.2.1.4(a) through Table 17.2..1.4(l). Change the SRR to DRR for the rack shown against thewall.

Statement of Problem and Substantiation for Public Comment

We have a conflict between chap 16 and 17 on what a narrow rack against the wall is called. Chap 16 shows this rack arrangement in Figures 16.3.1.3.1.1 (A) (a) thru (j) with longitudinal in-rack sprinklers within the space between the rack and the wall. Section 16.3.1.3.1.1 is titled Double Row Racks. Combining this title with the definition (3.9.3.7.5) that states that single row racks do not have longitudinal flues confirms we intended for this to be called a double row rack. The definition of a double row rack is not a rack assembly greater than 6 ft and less than 12 ft. We now have Figures 17.2.1.4(a) through (l) identifying narrow racks against the wall as a single row rack. The committee statement confirmed that these are single row racks and that the space between the rack and the wall is a longitudinal flue despite the fact that it is an explicit conflict with the definition of a single row rack. To resolve this conflict, we can either change the definition and the figures in chap 16 or make this change to chap 17.

Related Item

Public Input No. 119-NFPA 13-2013 [Global Input]

Submitter Information Verification

Submitter Full Name: Roland Huggins

Organization: American Fire Sprinkler Assoc.

Street Address:

City:

State:

Zip:

Submittal Date: Fri Apr 04 16:56:30 EDT 2014

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

1 of 579 5/19/2014 1:50 PM


See FR 175.


CC NOTE: The following CC Note No. 4 appeared in the First Draft Report as First Revision No. 175.

FR 175 adds the word "open" in front of the word rack throughout portions of Ch 16 and 17. The SSD TC or a task group needs to review the term "open rack" for titles and tables of sections that also apply to solid shelf racks.

Related Item

First Revision No. 175-NFPA 13-2013 [Global Input]


Submitter Full Name: CC on AUT-AAC

Organization: CC on Automatic Sprinkler Systems

Street Address:

City:

State:

Zip:

Submittal Date: Tue Apr 29 13:38:27 EDT 2014


2 of 579 5/19/2014 1:50 PM


Add a new Section 12.1.5

12.1.5 Fire Protection of Steel Columns Within Storage

See Section C.10.

12.1.5.1 Where storage heights are in excess of 15 ft (4.6 m), protection of building columns located whollyor partially within the rack footprint inclusive of flue spaces or within 12 in. (305 mm) of the footprint shall beprotected in accordance with one of the following:

(1) 1-hour fireproofing

(2) In-rack sprinklers

(3) Sidewall sprinklers at the 15 ft (4.6 m) elevation, pointed toward one side of the steel column

(4) Provision of ceiling sprinkler density for a minimum of 2000 ft2 (186 m2) with ordinary 165°F (74°C) orhigh-temperature 286°F (141°C) rated sprinklers as shown in Table 12.1.5.1 for storage heights above15 ft (4.6 m), up to and including 20 ft (6.1 m)

(5) Provision of CMSA or ESFR ceiling sprinkler protection

Table 12.1.5.1 Ceiling Sprinkler Densities for Protection of Steel Building Columns

Commodity Classification

Aisle Width

4 ft (1.2 m) 8 ft (2.4 m)

gpm/ft2 (L/min)/m2 gpm/ft2 (L/min)/m2

Class I 0.37 15.1 0.33 13.5

Class II 0.44 17.9 0.37 15.1

Class III 0.49 20.0 0.42 17.1

Class IV and Group A Plastics 0.68 27.7 0.57 23.2

12.1.5.1.1 Columns within Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage of Class Ithrough Class IV Commodities and Group A Plastics shall not require protection.

12.1.5.2 Where storage heights are in excess of 15 ft (4.6 m) and vertical rack members support thebuilding structure, the vertical rack members shall be protected in accordance with one of the options in12.1.5.1.

12.1.5.2.1 Where rubber tire storage exceeds 20 ft (6.1 m) in height, the vertical rack members shall beprotected by two sidewall sprinklers, one at the top of the column and the other at a 15 ft (4.6 m) level, bothdirected to the side of the column

12.1.5.3 The flow from a column sprinkler(s) shall be permitted to be omitted from the sprinkler systemhydraulic calculations.

12.1.5.4 Where pallets are stored in cut-off rooms, columns shall be protected in accordance with section12.1.5.1 options (1) or (3).

Delete existing sections as follows:

12.12.2.2.4.1 (5)

14.3.6

16.1.4 and its subsections


3 of 579 5/19/2014 1:50 PM

17.1.4 and it's subsections

18.2 and it's subsections

.


This revision is proposed on behalf of the SSD redundancy task group and is considered editorial. Columns protection criteria is currently scattered in Chapters 12, 14, 16, 17 and 18 and all the chapters have essentially the same requirements and exemptions. This text is based off of section 16.1.4. The table requirements from that section were updated to include the requirements from Chapter 17 for Group A plastics and sections appropriate to pallet and rubber tire storage added. This new section consolidates all the requirements in a single section in Chapter 12 as a general requirement.

Related Item

Public Input No. 352-NFPA 13-2013 [Section No. 16.1.4]


Submitter Full Name: Kenneth Linder

Organization: Swiss Re

Street Address:

City:

State:

Zip:

Submittal Date: Wed May 14 15:26:20 EDT 2014


4 of 579 5/19/2014 1:50 PM


16.1.8.5 Sprinkler Clearance

16.1.8.5.1 Sprinklers shall be installed with a minimum 6 in. (152 mm) vertical clear space betweenthe in-rack sprinkler deflectors and the top of a tier of storage.

16.1.8.5.2 16.1.8.6.3 Sprinkler discharge shall not be obstructed by horizontal rack members.

16.1.8.5.3 16.1.8.5.2 The elevation of in-rack sprinkler deflectors with respect to storage andhorizontal rack members shall not be a consideration for CMDA in single- or double-row rackstorage up to and including 20 ft (6.1 m) high. (See Section C.16.)

16.1.8.6 Storage over 25 ft in height,

16.1.8.6.1 Face sprinklers shall be located within the rack a minimum of 3 in. (76 mm) from rackuprights and no more than 18 in. (460 mm) from the aisle face of storage.

16.1.8.6.2 Sprinklers shall be a minimum of 3 in. (76 mm) radially from the side of the rack uprights.

16.1.8.6.3 Sprinkler discharge shall not be obstructed by horizontal rack members.17.1.7.4.3 , In-rack sprinklers shall be installed with a minimum 6 in. (152 mm) verticalclear space between the in-rack sprinkler deflectors and the top of a tier of storage.

17.1.7.4.4 In-rack sprinklers in longitudinal flues shall be installed with the deflector located at orbelow the bottom of horizontal load beams or above or below other adjacent horizontal rackmembers.

17.1.7.4.5 For storage over 25 ft in height

17.1.7.4.5.1 In-rack sprinklers in longitudinal flues shall be installed

(a) with the deflector located at or below the bottom of horizontal load beams or above or belowother adjacent horizontal rack members, and

(b) a minimum of 3 in. (76 mm) radially from the side of the rack uprights.

17.1.7.4.5.2Face sprinklers in such racks shall be located within the rack a minimum of 3 in. (76 mm) from rackuprights and no more than 18 in. (460 mm) from the aisle face of storage.


The suggested wording is based on the suggested format from the redundancy task group on changes to chapters 16 and 17. This comment was NOT reviewed by that task group.

The concern for the in-rack sprinkler to be able to develop a pattern is focused on two separated components – one is the pallet load and the other is the horizontal frame members. We are explicit regarding the placement in regard to the pallet load but inconsistent regarding the structural members. In section 16.2.1.4.2.5 on CMDA sprinklers for storage up to 25 ft it is clear that where a vertical separation form the pallet load is required, separation from the frame members is also required. For CMSA and ESFR for storage up to 25 ft, a vertical separation is required but there is no mention on the horizontal frame members. Both requirements are explicated required for >25 ft storage but the vertical separation is all in-rack sprinklers whereas the horizontal members are addressed just on in-racks only in the longitudinal flues. This allows sprinklers in multiple row racks to completed obstructed by the horizontal rack member for storage heights over 25 ft for al sprinkler types, for CMSA and ESFR in all racks for storage less than 25 ft but for CMDA for storage between 20 ft and 25 ft the horizontal frame members can not obstruct the in-rack sprinklers.

Chapter 17 addresses this issue in a similar fashion and requires the horizontal member to be accounted for only for double row racks with storage greater than 25 ft.

Having a consistent requirement for both components impacting in-rack sprinkler discharge makes sense.


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Related Item






Street Address:

City:

State:

Zip:

Submittal Date: Thu May 15 17:06:54 EDT 2014


6 of 579 5/19/2014 1:50 PM


Replace existing Section 12.11 with the following:

12.11* High-Expansion Foam Systems.

12.11.1 General Requirements

12.11.1.1 High-expansion foam systems that are installed in addition to automatic sprinklers shall beinstalled in accordance with NFPA 11.

12.11.1.2. High-expansion foam systems shall be automatic in operation.

12.11.1.3 High-expansion foam systems shall be used in combination with ceiling sprinklers.

12.11.1.4 Detectors for High-Expansion Foam Systems.

12.11.1.4.1 Detectors shall be listed and shall be installed in one of the following configurations:

(1) At the ceiling only where installed at one-half the listed linear spacing [e.g., 15 ft × 15 ft (4.6 m × 4.6m) rather than at 30 ft × 30 ft (9.1 m × 9.1 m)]; at the ceiling at the listed spacing and in racks atalternate levels

(2) Where listed for rack storage installation and installed in accordance with the listing to provideresponse within 1 minute after ignition using an ignition source that is equivalent to that used in a rackstorage testing program

12.11.1.4.2 Ceiling detectors alone shall not be used where the clearance to ceiling exceeds 10 ft (3.1 m)or the height of the storage exceeds 25 ft (7.6 m).

12.11.1.4.3 Detectors for preaction systems shall be installed in accordance with 12.11.1.4.

12.11.2 Palletized solid-piled, bin box, shelf, or back-to-back shelf storage

12.11.2.1 A reduction in ceiling density to one-half that required for storage of Class I through Class IVcommodities, idle pallets, or plastics shall be permitted without revising the design area, no less than 0.15

gpm/ft2 (6.1 mm/min).

12.11.2.2 High-expansion foam used to protect idle pallet storage shall have a maximum submergencetime of 4 minutes.

12.11.3 Rack Storage

12.11.3.1 Storage up to 25 ft in hight

12.11.3.1.1 Where high-expansion foam systems are used in combination with ceiling sprinklers, theminimum ceiling sprinkler design density shall be 0.2 gpm/ft2 (8.1 mm/min) for Class I, Class II, or Class IIIcommodities or 0.25 gpm/ft2 (10.2 mm/min) for Class IV commodities for the most hydraulically remote2000 ft2 (186 m2) operating area.

12.11.3.1.2 Where high-expansion foam systems are used in combination with ceiling sprinklers, themaximum submergence time shall be 7 minutes for Class I, Class II, or Class III commodities and 5minutes for Class IV commodities.

12.11.3.2 Storage Over 25 Ft in Height and up to 35 ft in height.

12.11.3.2.1 The maximum submergence time for the high-expansion foam shall be 5 minutes for Class I,Class II, or Class III commodities and 4 minutes for Class IV commodities.

12.11.3.2.2 In-rack sprinklers shall not be required where high-expansion foam systems are used incombination with ceiling sprinklers.

12.11.4 Rubber Tire Storage

12.11.4.1 A reduction in ceiling density to one-half the density specified in Table 18.4(a) shall be permittedwithout revising the design area but the density shall be no less than 0.24 gpm/ft2 (9.78 mm/min).

12.11.5 Roll Paper Storage

12.11.5.1 A reduction in ceiling density protecting heavyweight class and mediumweight class storage


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areas shall be permitted without revising the design area but the density shall be no less than 0.24 gpm/ft2

(9.78 mm/min). with a minimum operating area of 2000 ft2 (186 m2)

12.11.5.2 The ceiling density protecting tissue storage areas shall not be reduced below those provided inTable 19.1.2.1.3(a) and Table 19.1.2.1.3(b).

Delete the following sections:

12.12.4

15.5

16.1.5 and subsections

16.3

18.6

19.1.2.1.6 and 19.1.2.1.7


Submitted on behalf of the SSD Redundancy Task Group. The requirements for high-expansion foam systems protection storage in combination with sprinklers are currently scattered throughout the storage chapters, use inconsistent wording and vary in completeness. These changes consolidate all the requirements into one section, unifying the language and style. The existing Sections 12.11 and 16.1.5 was used as the basis for the format and style and other sections relocated. These changes are considered editorial.

Related Public Comments for This Document

Related Comment Relationship

Public Comment No. 262-NFPA 13-2014 [Chapter 14] All apply to redundant and duplicate text

Related Item


Public Input No. 261-NFPA 13-2013 [Section No. 8.12.5.2]




Street Address:

City:

State:

Zip:

Submittal Date: Fri May 16 12:36:30 EDT 2014


8 of 579 5/19/2014 1:50 PM


Replace Chapter 15 First Draft Text with the following -- move and renumber existing annex materialto match that below.

Chapter 15 Protection for Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage ofPlastic and Rubber Commodities

15.1 General. This chapter shall apply to palletized, solid-piled, bin box, shelf, or back-to-back shelfstorage of plastic and rubber commodities. The requirements of Chapter 12 shall apply unlessmodified by this chapter.

15.1.1* Storage Conditions. The design of the sprinkler system shall be based on those conditionsthat routinely or periodically exist in a building and create the greatest water demand, which includethe following:

(1) Pile height

(2) Clearance to ceiling

(3) Pile stability

(4) Array

15.1.2 15.2.4 Group B plastics and free-flowing Group A plastics shall be protected in the samemanner as a Class IV commodity. (See Chapter 14 for protection of these storage commodities withspray sprinklers.)

15.1.3 15.2.5 Group C plastics shall be protected in the same manner as a Class III commodity. (SeeChapter 14 for protection of these storage commodities with spray sprinklers.)

15.2 Protection Criteria for Group A Plastics

15.2.1* Control Mode Density/Area Sprinkler Protection Criteria for Palletized, Solid-Piled, Bin Box,Shelf, or Back-to-Back Shelf Storage of Plastic and Rubber Commodities.

15.2.1.1 For the storage of Group A plastics stored 5 ft (1.5 m) or less in height, the sprinkler designcriteria for miscellaneous storage specified in Chapter 13 shall be used. The protection criteria inChapter 13 shall be acceptable for storage of Group A plastic commodities up to and including 5 ft(1.5 m) in height. (See Table 13.2.1 for specific Group A plastic storage height protection criteria.)

15.2.1.2* Protection for plastic and rubber commodities shall be in accordance with Section 15.2.The decision tree shown in Figure 15.2.1.2 shall be used to determine the protection criteriain eachspecific situation, subject to the following limitations:

(1) Commodities that are stored palletized, solid piled, or in bin boxes up to 25 ft (7.6 m) in height.

(2) Commodities that are stored in shelf storage up to 15 ft (4.6 m) in height.

(3) Commodities that are stored using back-to-back shelf storage up to 15 ft (4.6 m) in height. Theminimum aisle width shall be 60 in. (1524 mm). The design criteria shall be in accordance withTable 15.2.2. The back-to-back shelf shall have a full height solid vertical transverse barrier of3⁄8 in. (9.5 mm) plywood or particleboard, 22 gauge sheet metal, or equivalent, from face ofaisle to face of aisle, spaced at a maximum 45 ft (13.7 m) interval. The transverse barrier shallbe permitted to terminate at the longitudinal barrier.

Table 15.2.1.2 Back-to-Back Shelf Storage of Cartoned Unexpanded Group A Plastics

Storage Height Ceiling HeightProtection

Ft M ft m

Over 5 up to 8 1.5/2.4 Up to 14 4.3 Ordinary Hazard Group 2

Up to 12 3.7 Up to 15 4.6 0.45 gpm/ft2 over 2500 ft2 18.3 mm/min/232 m2


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Ft M ft m



Figure 15.2.1.2 Decision Tree. (Note: Use existing Figure 15.2.2 and change Table references from15.2.6 to 15.2.1.4 (a) and (b))

15.2.1.3* Factors affecting protection requirements such as closed/open array, clearance to ceiling,and stable/unstable piles shall be applicable only to storage of Group A plastics. This decision treealso shall be used to determine protection for commodities that are not wholly Group A plastics butcontain such quantities and arrangements of the same that they are deemed more hazardous thanClass IV commodities.

15.2.1.4 6* Design areas and densities for the appropriate storage configuration shall be selectedfrom Table 15.2.1.4 6 (a) or Table 15.2.1.4 6 (b) as appropriate.

Table 15.2.1.4 6 (a) Design Densities for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group APlastic Commodities (U.S. Customary Units)

Maximum Storage Height

.

(ft)

Roof/Ceiling Height (ft)Density (gpm/ft2)

A B C D E

>5 to ≤12

Up to 15 0.2 EH2 0.3 EH1 EH2

>15 to 20 0.3 0.6 0.5 EH2 EH2

>20 to 32 0.4 0.8 0.6 0.45 0.7

15

Up to 20 0.3 0.6 0.5 0.4 0.45

>20 to 25 0.4 0.8 0.6 0.45 0.7

>25 to 35 0.45 0.9 0.7 0.55 0.85

20

Up to 25 0.4 0.8 0.6 0.45 0.7

>25 to 30 0.45 0.9 0.7 0.55 0.85

>30 to 35 0.6 1.2 0.85 0.7 1.1

25Up to 30 0.45 0.9 0.7 0.55 0.85

>30 to 35 0.6 1.2 0.85 0.7 1.1

Notes:

(1) Minimum clearance between sprinkler deflector and top of storage shall be maintained asrequired.

(2) Column designations correspond to the configuration of plastics storage as follows:

A: (1) Nonexpanded, unstable

(2) Nonexpanded, stable, solid unit load

B: Expanded, exposed, stable

C: (1) Expanded, exposed, unstable

(2) Nonexpanded, stable, cartoned

D: Expanded, cartoned, unstable

E: (1) Expanded, cartoned, stable

(2) Nonexpanded, stable, exposed


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(3) EH1 = Density required by Figure 13.2.1 for Curve EH1

EH2 = Density required by Figure 13.2.1 for Curve EH2

(4) Roof/ceiling height >35 ft is not permitted.

Table 15.2.1.4 6 (b) Design Densities for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group APlastic Commodities (S.I. Units)


.

(m)

Roof/Ceiling Height

.

(m)

Density

.

(mm/min)

A B C D E

Up to 4.6 8.2 EH2 12.2 EH1 EH2

>1.5 to ≤3.6 >4.6 to 6.1 12.2 24.4 20.4 EH2 EH2

>6.1 to 9.8 16.3 32.6 24.4 18.3 28.5

Up to 6.1 12.2 24.4 20.4 16.3 18.3

4.6 >6.1 to 7.6 16.3 32.6 24.4 18.3 28.5

>7.6 to 10.7 18.3 36.7 28.5 22.4 34.6

Up to 7.6 16.3 32.6 24.4 18.3 28.5

6.1 >7.6 to 9.1 18.3 36.7 28.5 22.4 34.6

>9.1 to 10.7 24.4 49.0 34.6 28.5 44.8

7.6Up to 9.1 18.3 36.7 28.5 22.4 34.6

>9.1 to 10.7 24.4 49.0 34.6 28.5 44.8

Notes:

(1) Minimum clearance between sprinkler deflector and top of storage shall be maintained asrequired.













15.2.1.5 7 The ceiling-only protection criteria specified in Chapter 17 for rack storage of Group Aplastic commodities shall be permitted to be used for solid-piled and palletized storage of the samecommodity at the same height and clearance to ceiling.

15.2.1.6 8* For Table 15.2.1.4 6 (a) and Table 15.2.1.4 6 (b), the design areas shall be as follows:

(1) The area shall be a minimum of 2500 ft2 (232 m2).

(2) Where Table 15.2.1.4 6 (a) and Table 15.2.1.4 6 (b) allow densities and areas to be selected in


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accordance with Curve EH1 and Curve EH2 of Figure 13.2.1, any density/area from the curvesin Figure 13.2.1 shall be permitted. When selecting a point from the EH1 or EH2 density/areacurves of Figure 13.2.1, the following area reductions shall be permitted:

(a) For K-8.0 (115) sprinklers used with Curve EH1, the design area shall be permitted to be

reduced by 25 percent, but not below 2000 ft2 (186 m2), where high temperature sprinklersare used.

(b) For K-11.2 (160) or larger sprinklers, the design area shall be permitted to be reduced by

25 percent, but not below 2000 ft2 (186 m2), regardless of temperature rating.

(3) For closed arrays, the area shall be permitted to be reduced to 2000 ft2 (186 m2).

15.2.1.7 9* Interpolation of densities between storage heights shall be permitted.

15.2.1.7 9.1 Densities shall be based on the 2500 ft2 (232 m2) design area.

15.2.1.7 9.2 Interpolation of ceiling/roof heights shall not be permitted.

15.2.1.8 10 For storage of Group A plastics between 5 ft (1.5 m) and 12 ft (3.7 m) in height, theinstallation requirements for extra hazard systems shall apply.

15.2.2 3 Control Mode Specific Application (CMSA) Sprinklers for Palletized or Solid-Piled Storageof Group A Plastic Commodities.

15.2.2. 3.1 Protection unexpanded and expanded commodities shall be in accordance with Table15.2.2 3.1.

Table 15.2.2.1 CMSA Sprinkler Design Criteria for Palletized and Solid-Piled Storage of Group APlastic Commodities

StorageArrangement

CommodityClass

MaximumStorageHeight

MaximumCeiling/Roof

Height K-Factor/OrientationType

ofSystem

Numberof DesignSprinklers

MinimumOperatingPressure

ft m ft m psi bar

PalletizedCartoned

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 25 25 1.7

16.8 (240)

.

Upright

Wet 15 22 1.5

19.6 (280)

.

Pendent

Wet 15 16 1.1

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15 22 1.5

19.6 (280)

.

Pendent

Wet 15 16 1.1

30 9.1 35 10.7

19.6 (280)

.

Pendent

Wet 15 25 1.7


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

Height K-Factor/Orientation Type ofSystem



ft m ft m psi bar

35 10.6 40 12.1

19.6 (280)

.

Pendent

Wet 15 30 2.1

Solid piledCartoned

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 15 50 3.5

16.8 (240)

.

Upright

Wet 15 22 1.5

19.6 (280)

.

Pendent

Wet 15 16 1.1

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15 22 1.5

19.6 (280)

.

Pendent

Wet 15 16 1.1

30 9.1 35 10.7

19.6 (280)

.

Pendent

Wet 15 25 1.7

35 10.6 40 12.1

19.6 (280)

.

Pendent

Wet 15 30 2.1

Palletized

Exposedunexpanded

plastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 25 25 1.7

16.8 (240)

.

Upright

Wet 15 22 1.5

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15 22 1.5

Cartoned orexposed

expandedplastics

18 5.5 26 7.9

11.2 (160)

.

Upright

Wet 15 50 3.5


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

Height K-Factor/Orientation Type ofSystem



ft m ft m psi bar

16.8 (240)

.

Upright

Wet 15 22 1.5

Solid piled

Cartoned orexposed

unexpandedplastics

20 6.1 30 9.1

11.2 (160)

.

Upright

Wet 15 50 3.5

25 7.6 30 9.1

16.8 (240)

.

Upright

Wet 15 22 1.5

15.3.2 Protection shall be provided as specified in Table 15.2.23.1 or appropriate NFPA standards interms of minimum operating pressure and the number of sprinklers to be included in the designarea.

15.2.2.2 3.3 Open Wood Joist Construction.

15.2.2 3.3.1 Where CMSA sprinklers are installed under open wood joist construction, theirminimum operating pressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar)for a K-16.8 (240) sprinkler.

15.2.2. 3.3.2 Where each joist channel of open wood joist construction is fully firestopped to its fulldepth at intervals not exceeding 20 ft (6.1 m), the lower pressures specified in Table 15.2.2 3.1 shallbe permitted to be used.

15.2.2.3.4 Preaction Systems. For the purpose of using Table 15.2.2 3.1, preaction systems shall beclassified as dry pipe systems.

Note: Separate Comment to move 15.3.5 to Chapter 12.

15.3.5 Building steel shall not require special protection where Table 15.3.1 is applied asappropriate for the storage configuration.

15.2.2.4 Early Suppression Fast-Response (ESFR) Sprinklers for Palletized or Solid-Piled Storage ofGroup A Plastic Commodities.

15.2,2.4.1 Protection of palletized and solid-piled storage of cartoned or exposed, expanded orunexpanded plastic and cartoned expanded or exposed expanded plastic shall be in accordancewith Table 15.2.2.4.1.

Table 15.2.2.4.1 ESFR Protection of Palletized and Solid-Piled Storage of Group A PlasticCommodities

StorageArrangement Commodity


MaximumCeiling/Roof

HeightNominalK-Factor Orientation


ft m ft m psi bar

Palletized andsolid-piledstorage (noopen-topcontainers)

Cartonedunexpanded

plastic20 6.1

25 7.6

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4


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MaximumCeiling/Roof



ft m ft m psi bar

22.4

.

(320)

Pendent 25 1.7

25.2

.

(360)

Pendent 15 1.0

30 9.1

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4

22.4

.

(320)

Pendent 25 1.7

25.2

.

(360)

Pendent 15 1.0

35 10.7

14.0

.

(200)

Upright/pendent

75 5.2

16.8

.

(240)

Upright/pendent

52 3.6

22.4

.

(320)

Pendent 35 2.4

25.2

.

(360)

Pendent 20 1.4

40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 40 2.8


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MaximumCeiling/Roof



ft m ft m psi bar

25.2

.

(360)

Pendent 25 1.7

45 13.7

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 40 2.8

25 7.6

30 9.1

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4

22.4

.

(320)

Pendent 25 1.7

25.2

.

(360)

Pendent 15 1.0

32 9.8

14.0

.

(200)

Upright/pendent

60 4.1

16.8

.

(240)

Upright/pendent

42 2.9

35 10.7

14.0

.

(200)

Upright orpendent

75 5.2

16.8

.

(240)

Upright/pendent

52 3.6

22.4

.

(320)

Pendent 35 2.4


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MaximumCeiling/Roof



ft m ft m psi bar

25.2

.

(360)

Pendent 20 1.4

40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 25 1.7

45 13.7

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 40 2.8

30 9.1

35 10.7

14.0

.

(200)

Upright/pendent

75 5.2

16.8

.

(240)

Upright/pendent

52 3.6

22.4

.

(320)

Pendent 35 2.4

25.2

.

(360)

Pendent 20 1.4

40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 40 2.8


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MaximumCeiling/Roof



ft m ft m psi bar

25.2

.

(360)

Pendent 25 1.7

45 13.7

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 40 2.8

35 10.7

40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 25 1.7

45 13.7

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 40 2.8

40 12.2 45 13.7

22.4

.

(320)

Pendent 40 2.8

25.2

.

(360)

Pendent 40 2.8

Exposedunexpanded

plastic20 6.1 25 7.6

14.0

.

(200)

Pendent 50 3.4

16.8

.

(240)

Pendent 35 2.4


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MaximumCeiling/Roof



ft m ft m psi bar

30 9.1

14.0

.

(200)

Pendent 50 3.4

16.8

.

(240)

Pendent 35 2.4

35 10.7

14.0

.

(200)

Pendent 75 5.2

16.8

.

(240)

Pendent 52 3.6

40 12.2

16.8

.

(240)

Pendent 52 3.6

25 7.6

30 9.1

14.0

.

(200)

Pendent 50 3.4

16.8

.

(240)

Pendent 35 2.4

32 9.8

14.0

.

(200)

Pendent 60 4.1

16.8

.

(240)

Pendent 42 2.9

35 10.7

14.0

.

(200)

Pendent 75 5.2

16.8

.

(240)

Pendent 52 3.6

40 12.2

16.8

.

(240)

Pendent 52 3.6


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MaximumCeiling/Roof



ft m ft m psi bar

22.4

.

(320)

Pendent 50 3.4

25.2

.

(360)

Pendent 50 3.4

30 9.1

35 10.7

14.0

.

(200)

Pendent 75 5.2

16.8

.

(240)

Pendent 52 3.6

40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 50 3.4

25.2

.

(360)

Pendent 50 3.4

35 10.7 40 12.2

16.8

.

(240)

Pendent 52 3.6

22.4

.

(320)

Pendent 50 3.4

25.2

.

(360)

Pendent 50 3.4

Cartonedexpanded

plastic20 6.1 25 7.6

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4


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MaximumCeiling/Roof



ft m ft m psi bar

30 9.1

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4

25 7.6

30 9.1

14.0

.

(200)

Upright/pendent

50 3.4

16.8

.

(240)

Upright/pendent

35 2.4

32 9.8

14.0

.

(200)

Pendent 60 4.1

16.8

.

(240)

Upright/pendent

42 2.9

Exposed*expanded

plastic25 7.6 40 12.2

25.2

.

(360)

Pendent 60 4.1

*Applies to closed array storage only.

15.4.2 ESFR Sprinkler systems shall be designed such that the minimum operating pressure is notless than that indicated in Table 15.4.1 for type of storage, commodity, storage height, and buildingheight involved.

15.4.3 The design area shall consist of the most hydraulically demanding area of 12 sprinklers,consisting of four sprinklers on each of three branch lines.

15.2.2.4.4 Special Designs for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Group A PlasticCommodities. (Reserved)

Note: Separated Comment to Consolidate all high-exansion foam sections intoSection 12.11.

15.5 High-Expansion Foam — Reduction in Ceiling Density. A reduction in ceiling density toone-half that required for Class I through Class IV commodities, idle pallets, or plastics shall be

permitted without revising the design area, but the density shall be no less than 0.15 gpm/ft2 (6.1mm/min).


Submitted on behalf of the SSD Redundancy Task Group. Location has meaning and context. Information from the Chapter Title and Section Headings does not need to be repeated throughout the Chapter There is no need to reference the sprinkler type. storage type or commodity unless the section only applies to a subset. Revised


21 of 579 5/19/2014 1:50 PM

numbering to be consistent with the format of Chapters 16 and 17. Other changes to eliminate redundancy.



Public Comment No. 261-NFPA 13-2014 [Global Input] All apply to redundant and duplicate text

Public Comment No. 262-NFPA 13-2014 [Chapter 14]

Public Comment No. 325-NFPA 13-2014 [Global Input]

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22 of 579 5/19/2014 1:50 PM


Make the following revisions to Chapter 16, to eliminate redundancy and duplication of textrenumbering sections as needed.

16.1 General.

16.1.1 This section shall apply to storage of materials representing the broad range of combustibles storedin racks. The requirements of Chapter 12 shall apply unless modified by this chapter. (See Section C.9 .)

16.1.2* Sprinkler Protection Criteria.

16.1.2.1

Sprinkler protection criteria for the storage of materials on racks shall be in accordance with Section 16.2for storage up to 25 ft (7.6 m) and Section 16.3 for storage over 25 ft (7.6 m).

16.1.2.2*

Protection criteria for Group A plastics shall be permitted for the protection of the same storage height andconfiguration of Class I, II, III, and IV commodities.

16.1.3 Movable Racks.

Rack storage in movable racks shall be protected in the same manner as multiple-row racks.

Delete 16.1.4 and Subsections (separate comment to consolidate the Column requirements into Chapter12)

Delete 16.1.5 and Subsections (separate comment to consolidate the High expanskion foam requirementsinto Chapter 12)

16.1.7 Open-Top Containers.

The protection of open-top containers shall be considered outside the scope of Chapter 16. See SectionC.12 .

16.1.8 In-Rack Sprinklers.

16.1.8.1

The number of sprinklers and the pipe sizing on a line of sprinklers in racks shall be restricted only byhydraulic calculations and not by any piping schedule.

16.1.8.2

When in-rack sprinklers are necessary to protect a higher-hazard commodity that occupies only a portion ofthe length of a rack, in-rack sprinklers shall be extended a minimum of 8 ft (2.44 m) or one bay, whicheveris greater, in each direction along the rack on either side of the higher hazard. The in-rack sprinklersprotecting the higher hazard shall not be required to extend across the aisle.

16.1.8.3

Where a storage rack, due to its length, requires less than the number of in-rack sprinklers specified, onlythose in-rack sprinklers in a single rack shall be included in the calculation.

16.1.8.4*

In-rack Sprinklers shall be located at an intersection of transverse and longitudinal flues while notexceeding the maximum spacing rules.

(A)

Where distances between transverse flues exceed the maximum allowable distances, sprinklers shall beinstalled at the intersection of the transverse and longitudinal flues and additional sprinklers shall beinstalled between transverse flues to meet the maximum distance rules.

(B)

Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacing rules.

Remainder of Section 16.1 Remains as printed in the first draft


23 of 579 5/19/2014 1:50 PM


Submitted on behalf of the SSD Redundancy Task Group. Eliminate redundant text from section 16.1. These changes are considered editorial.



Public Comment No. 261-NFPA 13-2014 [GlobalInput]

All consolidate or eliminate redundant/duplicatetext




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24 of 579 5/19/2014 1:50 PM


The folloing changes consolidate in-rack requirements to section 16.1 and eliminate the redundanttext.

16.1.8.4*

Where In-rack sprinklers are installed in longitudinal flues, they shall be located at an intersectionof transverse and longitudinal flues while not exceeding the maximum spacing rules.

(A)

Where distances between transverse flues exceed the maximum allowable distances, sprinklersshall be installed at the intersection of the transverse and longitudinal flues and additionalsprinklers shall be installed between transverse flues to meet the maximum distance rules.

(B)


16.1.8.5 Sprinkler Clearance

16.1.8.5.1 16.2.1.4.2.4 &16.1.11.2 Sprinklers shall be installed with a minimum 6 in. (152 mm)vertical clear space between the in-rack sprinkler deflectors and the top of a tier of storage.

16.1.8.5.2 16.1.4.2.3 The elevation of in-rack sprinkler deflectors with respect to storage andhorizontal rack members shall not be a consideration for CMDA in single- or double-row rackstorage up to and including 20 ft (6.1 m) high. (See Section C.16.)

16.1.8.6 16.1.11.2 Storage over 25 ft in height,

16.1.8.6.1 16.1.11.2.1

Face sprinklers in such racks shall be located within the rack a minimum of 3 in. (76 mm) from rackuprights and no more than 18 in. (460 mm) from the aisle face of storage.

16.1.8.6.2 16.1.11.2.3

Such in-rack Sprinklers shall be a minimum of 3 in. (76 mm) radially from the side of the rackuprights.

16.1.8.6.3 16.1.11.1.1

Sprinkler discharge shall not be obstructed by horizontal rack members.

16.1.11.2

In single-row, double-row, or multiple-row racks, a minimum 6 in. (152.4 mm) vertical clear spaceshall be maintained between the in-rack sprinkler deflectors and the top of a tier of storage.

16.1.11.2.1


16.1.11.2.2

Longitudinal flue in-rack sprinklers shall be located at the intersection with the transverse fluespace and with the deflector located at or below the bottom of horizontal load beams or above orbelow other adjacent horizontal rack members.

16.1.11.2.3

Such in-rack sprinklers shall be a minimum of 3 in. (76 mm) radially from the side of the rackuprights.

16.2.1.4.2.3*

The elevation of in-rack sprinkler deflectors with respect to storage shall not be a consideration insingle- or double-row rack storage up to and including 20 ft (6.1 m) high. (See Section C.16.)

16.2.1.4.2.4*


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In single- or double-row racks without solid shelves with storage over 20 ft (6.1 m) high, or inmultiple-row racks, or in single- or double-row racks with solid shelves and storage height up toand including 25 ft (7.6 m), a minimum of 6 in. (152 mm) vertical clear space shall be maintainedbetween the in-rack sprinkler deflectors and the top of a tier of storage.

(A)


16.2.1.4.2.5

For multiple-row racks, a minimum of 6 in. (152 mm) shall be maintained between the in-racksprinkler deflector and the top of a tier of storage.

16.2.1.4.2.6

Sprinklers installed in racks shall be spaced without regard to rack uprights. (See Section C.17.)

16.2.2.7.2

The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between the sprinklerdeflectors and the top of a tier of storage.

16.2.2.7.3*

In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues.

16.2.2.7.5

Where distances between transverse flues exceed the maximum allowable distances, sprinklersshall be installed at the intersection of the transverse and longitudinal flues, and additionalsprinklers shall be installed between transverse flues to meet the maximum distance rules.

16.2.2.7.6


16.2.3.6.3

The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between the sprinklerdeflectors and the top of a tier of storage.

16.2.3.6.5*

In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues while notexceeding the maximum spacing rules.

16.2.3.6.6


16.2.3.6.7


16.3.1.3.2.4*


(A)


(B)


16.3.2.7.2

The minimum of 6 in. (152 mm) vertical clear space shall be maintained between the sprinklerdeflectors and the top of a tier of storage.

16.3.2.7.3



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16.3.2.7.5


16.3.2.7.6


16.3.3.5.2

In-rack sprinklers shall be located at the intersection of the longitudinal and transverse flue space.

16.3.3.5.4

The minimum of 6 in. (152 mm) vertical clear space shall be maintained between the sprinklerdeflectors and the top of a tier of storage.

16.3.3.5.5


16.3.3.5.6


16.3.3.5.7



Submitted on behalf of the SSD Redundancy Task Group. -- These changes consolidate in-rack requirements in 16.1 and eliminate duplicated text and are considered editorial. Changes in Chapter 16 match those made in Chapter 17 during the First Draft

Related Item

First Revision No. 317-NFPA 13-2013 [Section No. 17.1.7.4]




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27 of 579 5/19/2014 1:50 PM


Make the following changes to Section 16.2 to eliminate redundancy and duplicatetext.

16.2 Protection Criteria for Open Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height.

16.2.1 Control Mode Density/Area Sprinkler Protection Criteria for Rack Storage of Class IThrough Class IV Commodities Stored Up to and Including 25 ft (7.6 m) in Height.

16.2.1.1

The area and density for the hydraulically remote area and the water supply shall be determined asspecified in 16.2.1.2 for storage up to 12 ft (3.7 m) and 16.2.1.3 to 16.2.1.3.5 for storage over 12 ft (3.7 m).

16.2.1.2 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored Storage Upto 12 ft (3.7 m) in Height.

16.2.1.2.1 The protection criteria for storage up to and including 12 ft (3.7 m) shall be the same asmiscellaneous storage from Chapter 13.

16.2.1.2.2 The protection criteria in Chapter 13 shall be acceptable for storage of Class I through Class IVcommodities up to and including 12 ft (3.7 m) in height. (See Table 13.2.1 for specific Class I through ClassIV storage height protection criteria.)

16.2.1.2.3 For storage 12 ft (3.7 m) or less in height that does not meet the definition of MiscellaneousStorage that is on solid shelf racks, in-rack sprinklers shall be provided in accordance with 16.1.6, andceiling sprinkler protection shall be provided in accordance with Chapter 13.

16.2.1.3 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored StorageOver 12 ft (3.7 m) in Height.

16.2.1.3.1*

Ceiling sprinkler water demand shall be determined in accordance with 16.2.1.3.2 for single- anddouble-row racks or 16.2.1.3.3 for multiple-row racks. (See Section C.14.)

16.2.1.3.2*

For single- or double-row racks for Class I, Class II, Class III, or Class IV commodities, encapsulated ornonencapsulated in single- or double-row racks , ceiling sprinkler water demand in terms of density

[gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) of ceiling or roof] shall be selected from thedensity/area curves of Figure 16.2.1.3.2(a) through Figure 16.2.1.3.2(g) that are appropriate for eachcommodity and configuration as shown in Table 16.2.1.3.2 and shall be modified as appropriate by16.2.1.3.4 . These requirements shall apply to portable racks arranged in the same manner as single- ordouble-row racks.

Table 16.2.1.3.2 Single- or Double-Row Racks — Storage Height Over 12 ft (3.7 m) Up to and Including 25ft (7.6 m)

Height CommodityClass Encapsulated

SprinklersMandatory

In-Rack

Ceiling Sprinkler Water Deman

Aisles* With In-Rack Sprinklers Without In-R

ft m Figure CurvesApplyFigure

16.2.1.3.4.1Figure Cu

Over 12ft (3.7m) up to

I No4 1.2

No 16.2.1.3.2(a)C and D

Yes 16.2.1.3.2(a)F a

8 2.4 A and B E a


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SprinklersMandatory

In-Rack




16.2.1.3.4.1Figure Cu

andincluding20 ft (6.1m)

Yes4 1.2

No 16.2.1.3.2(e)C and D

16.2.1.3.2(e)G a

8 2.4 A and B E a

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.2.1.3.2(b)G a

8 2.4 A and B E a

Yes4 1.2

No 16.2.1.3.2(e)C and D

16.2.1.3.2(e)G a

8 2.4 A and B E a

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.2.1.3.2(c)G a

8 2.4 A and B E a

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

—8 2.4 A and B

IV

No4 1.2

No 16.2.1.3.2(d)C and D

16.2.1.3.2(d)G a

8 2.4 A and B E a

Yes4 1.2

1 level 16.2.1.3.2(g)C and D

—8 2.4 A and B

Over 20ft (6.1m) up toandincluding22 ft (6.7m)

I

No4 1.2

No 16.2.1.3.2(a)C and D

No

16.2.1.3.2(a)F a

8 2.4 A and B E a

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

—8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.2.1.3.2(b)G a

8 2.4 A and B E a

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

—8 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.2.1.3.2(c)G a

8 2.4 A and B E a

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

—8 2.4 A and B

IVNo

4 1.2No 16.2.1.3.2(d)

C and D16.2.1.3.2(d)

G a

8 2.4 A and B E a

Yes 4 1.2 1 level 16.2.1.3.2(g) C and D —


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SprinklersMandatory

In-Rack




16.2.1.3.4.1Figure Cu

8 2.4 A and B


I

No4 1.2

No 16.2.1.3.2(a)C and D

No

16.2.1.3.2(a)F a

8 2.4 A and B E a

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

—8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.2.1.3.2(b)G a

8 2.4 A and B E a

Yes4 1.2

1 level 16.2.1.3.2(e)C and D

—8 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.2.1.3.2(c)G a

8 2.4 A and B E a

Yes4 1.2

1 level 16.2.1.3.2(f)C and D

—8 2.4 A and B

IV

No4 1.2

1 level

16.2.1.3.2(d)C and D

—8 2.4 A and B

Yes4 1.2

16.2.1.3.2(g)C and D

—8 2.4 A and B

*See 16.2.1.3.2.1 for interpolation of aisle widths.

Figure 16.2.1.3.2(a) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class INonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(b) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IINonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(c) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IIINonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(d) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IVNonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(e) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class I and Class II Encapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(f) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler System


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Design Curves — Class III Encapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(g) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — Sprinkler SystemDesign Curves — Class IV Encapsulated Commodities — Conventional Pallets.

16.2.1.3.2.1*

Design densities for single- and double-row racks shall be selected to correspond to aisle width. (SeeSection C.15.)

(A) For aisle widths between 4 ft (1.2 m) and 8 ft (2.4 m), the rules for 4 ft (1.2 m) aisle width shall be usedor direct linear interpolation between the densities shall be permitted.

(B) The density given for 8 ft (2.4 m) wide aisles shall be applied to aisles wider than 8 ft (2.4 m).

(C) The density given for 4 ft (1.2 m) wide aisles shall be applied to aisles more narrow than 4 ft (1.2 m)down to 3 1⁄2 ft (1.07 m).

(D) Where aisles are more narrow than 3 1⁄2 ft (1.07 m), racks shall be considered to be multiple-rowracks.

16.2.1.3.3 Multiple-Row Racks — Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft (7.6 m).

16.2.1.3.3.1 Multiple-Row Racks — Rack Depth Up to and Including 16 ft (4.9 m) with Aisles 8 ft (2.4m) or Wider.

For Class I, Class II, Class III, or Class IV commodities, encapsulated or nonencapsulated, c C eiling

sprinkler water demand in terms of density [gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) ofceiling or roof] shall be selected from the density/area curves of Figure 16.2.1.3.2(a) through Figure16.2.1.3.2(d) that are appropriate for each commodity and configuration as shown in Table 16.2.1.3.3.1and shall be modified as appropriate by 16.2.1.3.4 . These requirements protection criteria shall apply toportable racks arranged in the same manner as multiple-row racks.

Table 16.2.1.3.3.1 Multiple-Row Racks — Rack Depth Up to and Including 16 ft (4.9 m), Aisles 8 ft (2.4 m)or Wider and Storage Height Over 12 ft (3.7 m) Up to 25 ft (7.6 m)

Height CommodityClass

Encap-

sulated

SprinklersMandatory

In-Rack

Ceiling Sprinkler Water Demand

With In-Rack Sprinklers Without In-Ra

Figure CurvesApplyFigure

16.2.1.3.4.1

1.25 ×Density Figure Curves


INo

No

16.2.1.3.2(a)

C and D

Yes

No 16.2.1.3.2(a) I and J

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a) I and J

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b) I and J

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b) I and J

IIINo No 16.2.1.3.2(c) No 16.2.1.3.2(c) I and J

Yes 1 level 16.2.1.3.2(c) Yes NA

IV

No No 16.2.1.3.2(d) No 16.2.1.3.2(d) C and D

Yes 1 level 16.2.1.3.2(d) A and B1.50 ×density

NA

Over 15ft (4.6m) up to

INo

No16.2.1.3.2(a)

C and D YesNo 16.2.1.3.2(a) I and J

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a) I and J


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Encap-

sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1


andincluding20 ft (6.1m)

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b) I and J

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b) I and J

IIINo No 16.2.1.3.2(c) No 16.2.1.3.2(c) I and J

Yes 1 level 16.2.1.3.2(c) Yes

NA NAIV

No

1 level

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) A nd B1.50 ×density


INo No 16.2.1.3.2(a)

C and D

No

No 16.2.1.3.2(a) I and J

Yes 1 level 16.2.1.3.2(a) Yes

NA NA

IINo

1 level

16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No

2 levels

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) A and B1.50 ×density

NA: Not applicable.

16.2.1.3.3.2 Multiple-Row Racks — Rack Depth Over 16 ft (4.9 m) or Aisles More Narrow Than 8 ft(2.4 m).

For Class I, Class II, Class III, or Class IV commodities, encapsulated or nonencapsulated, C c eiling

sprinkler water demand in terms of density [gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) ofceiling or roof] shall be selected from the density/area curves of Figure 16.2.1.3.2(a) through Figure16.2.1.3.2(g) that are appropriate for each commodity and configuration as shown in Table 16.2.1.3.3.2and shall be modified as appropriate by 16.2.1.3.4. These requirements protection criteria shall apply toportable racks arranged in the same manner as multiple-row racks. (Move to 16.1 and delete fromindividual sections)

Table 16.2.1.3.3.2 Multiple-Row Racks — Rack Depth Over 16 ft (4.9 m) or Aisles Narrower Than 8 ft (2.4m), Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft (7.6 m)


Encap-

sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1


Over 12 I No No 16.2.1.3.2(a) C and D Yes No 16.2.1.3.2(a) I and J


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Encap-

sulated

SprinklersMandatory

In-Rack




16.2.1.3.4.1


ft (3.7 m)up toandincluding15 ft (4.6m)

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a) I and J

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b) I and J

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b) I and J

IIINo 16.2.1.3.2(c) No 16.2.1.3.2(c) I and J


IV

No No 16.2.1.3.2(d) No 16.2.1.3.2(d) C and D

Yes 1 level 16.2.1.3.2(d)1.50 ×density


INo

1 level

16.2.1.3.2(a)

C and D Yes

No

NA NA

Yes 16.2.1.3.2(a) Yes

IINo 16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No 16.2.1.3.2(d) No

Yes 16.2.1.3.2(d)1.50 ×density


INo

1 level

16.2.1.3.2(a)

C and D No

No

NA NA

Yes 16.2.1.3.2(a) Yes

IINo 16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No

2 levels

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d)1.50 ×density

NA: Not applicable.

16.2.1.3.3.3 Where Class I, Class II, and Class III commodities are encapsulated, ceiling sprinkler densityshall be 25 percent greater than for nonencapsulated.

16.2.1.3.3.4 Where Class IV commodities are encapsulated, ceiling sprinkler density shall be 50 percentgreater than for nonencapsulated.

16.2.1.3.4 Ceiling Sprinkler Density Adjustments.

16.2.1.3.4.1 For storage height over 12 ft (3.7 m) up to and including 25 ft (7.6 m) protected with ceiling


33 of 579 5/19/2014 1:50 PM

sprinklers only and for storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected withceiling sprinklers and minimum required in-rack sprinklers, densities obtained from design curves shall beadjusted in accordance with Figure 16.2.1.3.4.1.

Figure 16.2.1.3.4.1 Ceiling Sprinkler Density vs. Storage Height.

16.2.1.3.4.2 For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected with ceilingsprinklers and minimum required in-rack sprinklers, densities obtained from design curves shall be used.Densities shall not be adjusted in accordance with Figure 16.2.1.3.4.1.

16.2.1.3.4.3 For storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected with ceilingsprinklers and with more than one level of in-rack sprinklers, but not in every tier, densities obtained fromdesign curves and adjusted in accordance with Figure 16.2.1.3.4.1 shall be permitted to be reduced anadditional 20 percent, as indicated in Table 16.2.1.3.4.3.

Table 16.2.1.3.4.3 Adjustment to Ceiling Sprinkler Density for Storage Height and In-Rack Sprinklers

StorageHeight

In-RackSprinklers

Apply Figure16.2.1.3.4.1 forStorage Height

Adjustment

Permitted Ceiling SprinklersDensity Adjustments Where

In-Rack Sprinklers AreInstalled

Over 12 ft (3.7m) through 25 ft(7.6 m)

None Yes None


Minimum required Yes None

More thanminimum, but notin every tier

YesReduce density 20% from that ofminimum in-rack sprinklers

In every tier YesReduce density 40% from that ofminimum in-rack sprinklers


Minimum required No None

More thanminimum, but notin every tier

NoReduce density 20% from that ofminimum in-rack sprinklers

In every tier NoReduce density 40% from that ofminimum in-rack sprinklers

16.2.1.3.4.4 For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected with ceilingsprinklers and with more than the minimum required level of in-rack sprinklers, but not in every tier,densities obtained from design curves shall be permitted to be reduced 20 percent, as indicated in Table16.2.1.3.4.3. Densities shall not be adjusted in accordance with Figure 16.2.1.3.4.1 for storage height.

16.2.1.3.4.5* For storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected with ceilingsprinklers and in-rack sprinklers at each tier, densities obtained from design curves and adjusted inaccordance with Figure 16.2.1.3.4.1 shall be permitted to be reduced an additional 40 percent, as indicatedin Table 16.2.1.3.4.3.

16.2.1.3.4.6* For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected with ceilingsprinklers and in-rack sprinklers at each tier, densities obtained from design curves shall be permitted to bereduced 40 percent, as indicated in Table 16.2.1.3.4.3. Densities shall not be adjusted in accordance withFigure 16.2.1.3.4.1 for storage height.

16.2.1.3.4.7 Where solid, flat-bottom, combustible pallets (slave pallets) are used with storage height up toand including 25 ft (7.6 m), the densities that are indicated in the design curves shown in Figure

16.2.1.3.2(a) through Figure 16.2.1.3.2(g), based on conventional pallets, shall be increased 20 percent forthe given area.


34 of 579 5/19/2014 1:50 PM

(A) The percentage shall be applied to the density determined in accordance with 16.2.1.3.4.

(B) The increase in density shall not apply where in-rack sprinklers are utilized in the design.

16.2.1.3.5 Solid For solid shelf rack storage , Table 16.2.1.3.2 shall be used to establish thedensity/area criteria and in-rack sprinklers shall be installed in accordance with 16.1.6. In-racksprinkler rules consolidated in 16.1.8- check to see if this has been deleted.

16.2.1.4 In-Rack Sprinklers for Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height Protected with Control ModeDensity/Area Sprinklers at Ceiling.

16.2.1.4.1 In-Rack Sprinkler Location for Rack Storage of Class I Through Class IV Commodities StoredUp to and Including 25 ft (7.6 m) in Height .

16.2.1.4.1.1 In single- or double-row racks, in-rack sprinklers shall be installed in accordance with Table16.2.1.3.2.

16.2.1.4.1.2 In multiple-row racks no deeper than 16 ft (4.9 m) with aisles 8 ft (2.4 m) or more in width,in-rack sprinklers shall be installed in accordance with Table 16.2.1.3.3.1.

16.2.1.4.1.3 In multiple-row racks deeper than 16 ft (4.9 m) or with aisles less than 8 ft (2.4 m) wide,in-rack sprinklers shall be installed in accordance with Table 16.2.1.3.3.2.

16.2.1.4.1.4 In-rack sprinklers at one level only for storage up to and including 25 ft (7.6 m) high shall belocated at the first tier level at or above one-half of the storage height.

16.2.1.4.1.5 In-rack sprinklers at two levels only for storage up to and including 25 ft (7.6 m) high shall belocated at the first tier level at or above one-third and two-thirds of the storage height.

16.2.1.4.2 In-Rack Sprinkler Spacing for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected by ControlMode Density/Area Sprinklers at the Ceiling.

16.2.1.4.2.1* Maximum horizontal spacing of in-rack sprinklers in single- or double-row racks up to andincluding 25 ft (7.6 m) in height shall be in accordance with Table 16.2.1.4.2.1.

Table 16.2.1.4.2.1 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored in Single- orDouble-Row Racks Up to 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers at theCeiling

Commodity Class

Aisle Widths I and II III IV

Encapsulated ft m ft m ft m ft m

No 8 2.4 12 3.7 12 3.7 10 3.0

No 4 1.2 12 3.7 10 3.0 10 3.0

Yes — — 8 2.4 8 2.4 8 2.4

16.2.1.4.2.2* Maximum horizontal spacing and maximum area of coverage of in-rack sprinklers on branchlines, in multiple-row racks with storage up to and including 25 ft (7.6 m) in height, shall be in accordancewith Table 16.2.1.4.2.2.

Table 16.2.1.4.2.2 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored in Multi-RowRacks Up to 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers at the Ceiling

Commodity Class

I, II, III IV

Spacing Area Spacing Area

ft m ft2 m2 ft m ft2 m2


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Commodity Class

I, II, III IV


ft m ft2 m2 ft m ft2 m2

12 3.7 100 9.3 8 2.4 80 7.4

(A) The rack plan view shall be considered in determining the area covered by each sprinkler.

(B) The aisles shall not be included in area calculations.

16.2.1.4.2.3* The elevation of in-rack sprinkler deflectors with respect to storage shall not be aconsideration in single- or double-row rack storage up to and including 20 ft (6.1 m) high. (See SectionC.16.)

16.2.1.4.2.4* In single- or double-row racks without solid shelves with storage over 20 ft (6.1 m) high, or inmultiple-row racks, or in single- or double-row racks with solid shelves and storage height up to andincluding 25 ft (7.6 m), a minimum of 6 in. (152 mm) vertical clear space shall be maintained between thein-rack sprinkler deflectors and the top of a tier of storage.

(A) Sprinkler discharge shall not be obstructed by horizontal rack members.

16.2.1.4.2.5 For multiple-row racks, a minimum of 6 in. (152 mm) shall be maintained between the in-racksprinkler deflector and the top of a tier of storage.

16.2.1.4.2.6 Sprinklers installed in racks shall be spaced without regard to rack uprights. (See SectionC.17.)

16.2.1.4.3 In-Rack Sprinkler Water Demand for Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers in theCeiling. See Section C.18.

16.2.1.4.3.1 The water demand for sprinklers installed in racks shall be based on simultaneous operationof the most hydraulically remote sprinklers as follows:

(1) Six sprinklers where only one level is installed in racks with Class I, Class II, or Class III commodities

(2) Eight sprinklers where only one level is installed in racks with Class IV commodities

(3) Ten sprinklers (five on each two top levels) where more than one level is installed in racks with Class I,Class II, or Class III commodities

(4) Fourteen sprinklers (seven on each two top levels) where more than one level is installed in racks withClass IV commodities

16.2.1.4.3.2 Where a storage rack, due to its length, requires less than the number of in-rack sprinklersspecified in 16.2.1.4.3.1 (1) through 16.2.1.4.3.1 (4), only those in-rack sprinklers in a single rack shall beincluded in the calculation.

16.2.1.4.4 In-Rack Sprinkler Discharge Pressure for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected by Control Mode Density/AreaSprinklers at the Ceiling. Sprinklers in racks shall discharge at not less than 15 psi (1 bar) for all classes ofcommodities. (See Section C.19.)

16.2.2 CMSA Sprinklers Protection Criteria for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height.

16.2.2.1 Protection of single-, double-, and multiple-row rack storage for Class I through Class IVcommodities shall be in accordance with Table 16.2.2.1.

Table 16.2.2.1 CMSA Sprinkler Design Criteria for Rack Storage of Class I Through Class IV Commodities(Encapsulated and Nonencapsulated) Stored Up to and Including 25 ft (7.6 m) in Height

StorageArrangement

CommodityClass

MaximumStorage

MaximumCeiling/Roof

K-Factor/

Orientation

Typeof

Numberof Design

MinimumOperating


36 of 579 5/19/2014 1:50 PM

Height HeightSystem Sprinklers

Pressure

ft m ft m psi bar

Single-,double-, andmultiple-rowracks (noopen-topcontainers)

Class I or II

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

11.2 (160)Upright

Wet 20 25 1.7

Dry 30 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 30 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

Class III

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6

30 9.1

11.2 (160)Upright

Wet15 1 level of

in-rack25 1.7

Dry25 1 level of

in-rack25 1.7

16.8 (240)Upright

Wet 15 22 1.5

Dry25 1 level of

in-rack15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

35 10.6

11.2 (160)Upright

Wet15 1 level of

in-rack25 1.7

Dry25 1 level of

in-rack25 1.7

16.8 (240)Upright

Wet15 1 level of

in-rack15 1.0

Dry25 1 level of

in-rack15 1.0

19.6 (280)Pendent

Wet 15 25 1.7


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40 12.119.6 (280)Pendent

Wet 15 30 2.1

Class IV

20 6.1

25 7.6

11.2 (160)Upright

Wet 15 50 3.5

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1

11.2 (160)Upright

Wet20 50 3.5

15 75 5.2

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6

30 9.1

11.2 (160)Upright

Wet15 1 level of

in-rack50 3.5

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

35 10.6

11.2 (160)Upright

Wet

20 1 level ofin-rack

50 3.5


75 5.2

16.8 (240)Upright

Wet


22 1.5


35 2.4

19.6 (280)Pendent

Wet 15 25 1.7

40 12.119.6 (280)Pendent

Wet 15 30 2.1

16.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted wherein-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in every levelbelow the highest solid shelf.

16.2.2.2 Where in-rack sprinklers are required by Table 16.2.2.1, in In -rack sprinkler spacing, designpressure, and hydraulic calculation criteria shall be in accordance with the requirements of 16.2.2.7 asapplicable for the commodity .

16.2.2.3 Protection shall be provided as specified in Table 16.2.2.1 or appropriate NFPA standards interms of minimum operating pressure and the number of sprinklers to be included in the design area.

16.2.2.4 Open Wood Joist Construction.

16.2.2.4.1 Where CMSA sprinklers are installed under open wood joist construction, their minimumoperating pressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8 (240)sprinkler.

16.2.2.4.2 Where each joist channel of open wood joist construction is fully firestopped to its full depth at


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intervals not exceeding 20 ft (6.1 m), the lower pressures specified in Table 16.2.2.1 shall be permitted tobe used.

16.2.2.5 Preaction Systems.

For the purpose of using Table 16.2.2.1, preaction systems shall be classified as dry pipe systems.

16.2.2.6 Building steel shall not require special protection where Table 16.2.2.1 is applied as appropriatefor the storage configuration.

16.2.2.7 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height Protected with Control Mode Specific Application Sprinklers at the Ceiling.

16.2.2.7.1 Where in-rack sprinklers are required by Table 16.2.2.1, in In -rack sprinklers shall be installed atthe first tier level at or above one-half of the storage height.

16.2.2.7.2 The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between the sprinklerdeflectors and the top of a tier of storage.

16.2.2.7.3* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues.

16.2.2.7.4 The maximum horizontal distance between in-rack sprinklers shall be 8 ft (1.5 m).

16.2.2.7.5 Where distances between transverse flues exceed the maximum allowable distances, sprinklersshall be installed at the intersection of the transverse and longitudinal flues, and additional sprinklers shallbe installed between transverse flues to meet the maximum distance rules.

16.2.2.7.6 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacing rules.

16.2.2.7.7 In-Rack Sprinkler Water Demand.

The water demand for in-rack sprinklers shall be based on simultaneous operation of the most hydraulicallyremote eight sprinklers.

16.2.2.7.8 In-Rack Sprinkler Discharge Pressure.

In-rack sprinklers shall discharge at not less than 15 psi (1 bar) for all classes of commodities. (See SectionC.19.)

16.2.3* Early Suppression Fast-Response (ESFR) Protection Criteria Sprinklers for Rack Storage ofClass I Through Class IV Commodities Stored Up to and Including 25 ft (7.6 m) in Height .

16.2.3.1 Protection of single-, double-, and multiple-row rack storage of Class I through Class IVcommodities shall be in accordance with Table 16.2.3.1.

Table 16.2.3.1 ESFR Sprinkler Protection of Rack Storage of Class I Through Class IV Commodities StoredUp to and Including 25 ft (7.6 m) in Height



MaximumCeiling/Roof



In-RackSprinkler

Requirementsft m ft m psi bar

Single-row,double-row,andmultiple-rowracks (noopen-topcontainers)

Class I, II, III, orIV, encapsulated

ornonencapsultated

20 6.1

25 7.6

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No

22.4

(320)pendent 25 1.7 No


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MaximumCeiling/Roof



In-RackSprinkler


25.2

(360)Pendent 15 1.0 No

30 9.1

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No

22.4


25.2


35 10.7

14.0

(200)

Upright/

pendent75 5.2 No

16.8

(240)

Upright/

pendent52 3.6 No

22.4


25.2


4012.2 or

12.1

16.8


22.4


25.2


45 13.7

14.0

(200)Pendent 90 6.2 Yes

16.8


22.4


25.2


25 7.6 30 9.114.0

(200)

Upright/

pendent50 3.4 No


40 of 579 5/19/2014 1:50 PM



MaximumCeiling/Roof



In-RackSprinkler


16.8

(240)

Upright/

pendent35 2.4 No

22.4


25.2


32 9.8

14.0

(200)

Upright/

pendent60 4.1 No

16.8

(240)

Upright/

pendent42 2.9 No

35 10.7

14.0

(200)

Upright/

pendent75 5.2 No

16.8

(240)

Upright/

pendent52 3.6 No

22.4


25.2


4012.2 or

12.1

16.8


22.4


25.2


45 13.7

14.0


16.8


22.4


25.2


16.2.3.2 ESFR s Sprinklers shall not be permitted to protect storage on solid shelf racks unless the solidshelf racks are protected with in-rack sprinklers in accordance with 16.1.6.

16.2.3.2.1 Where solid shelves are used, in-rack sprinklers shall be installed in every level below thehighest solid shelf.


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16.2.3.3 ESFR sSprinklers shall not be permitted to protect storage with open top containers.

16.2.3.4 ESFR sSprinkler systems shall be designed such that the minimum operating pressure is not lessthan that indicated in Table 16.2.3.1 for type of storage, commodity, storage height, and building heightinvolved.

16.2.3.5 The design area shall consist of the most hydraulically demanding area of 12 sprinklers,consisting of four sprinklers on each of three branch lines.

16.2.3.6 In-Rack Sprinkler Requirements for Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height Where ESFR Sprinklers Are Being Used at the Ceiling .

16.2.3.6.1 Where required by Table 16.2.3.1, in-rack sprinklers shall be installed at the first tier level at orabove one-half of the storage height.

16.2.3.6.2 In-rack sprinklers shall be K-8.0 (115) or K-11.2 (160) quick-response, ordinary-temperaturesprinklers.

16.2.3.6.3 The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between the sprinklerdeflectors and the top of a tier of storage.

16.2.3.6.4 The maximum horizontal distance between in-rack sprinklers shall be 5 ft (1.5 m).

16.2.3.6.5* In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues whilenot exceeding the maximum spacing rules.

16.2.3.6.6 Where distances between transverse flues exceed the maximum allowable distances, sprinklersshall be installed at the intersection of the transverse and longitudinal flues, and additional sprinklers shallbe installed between transverse flues to meet the maximum distance rules.

16.2.3.6.7 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacing rules.

16.2.3.6.8 The water demand for sprinklers installed in racks shall be based on simultaneous operation ofthe most hydraulically remote eight sprinklers.

16.2.3.6.9 Each of the in-rack sprinklers described in 16.2.3.6.8 shall discharge at a minimum of 60 gpm(227 L/min).

16.2.4 Special Design for Rack Storage of Class I Through Class IV Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height .

16.2.4.1 Slatted Shelves.

16.2.4.1.1* Slatted rack shelves shall be considered equivalent to solid rack shelves where the shelving isnot considered open rack shelving or where the requirements of 16.2.4.1.2 are not met. (See Section C.20.)

16.2.4.1.2 A wet pipe system that is designed to provide a minimum of 0.6 gpm/ft2 (24.5 mm/min) density

over a minimum area of 2000 ft2 (186 m2) or K-14.0 (200) ESFR sprinklers operating at a minimum of 50psi (3.4 bar), K-16.8 (240) sprinklers operating at a minimum of 32 psi (2.2 bar), K-22.4 (320) ESFRsprinklers operating at a minimum of 25 psi (1.7 bar), or K-25.2 (360) ESFR sprinklers operating at aminimum of 15 psi (1 bar) shall be permitted to protect single-row and double-row racks with slatted rackshelving where all of the following conditions are met:

(1) Sprinklers shall be K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice spray sprinklers with atemperature rating of ordinary, intermediate, or high and shall be listed for storage occupancies orshall be K-14.0 (200), K-16.8 (240), K-22.4 (320) ESFR, or K-25.2 (360) ESFR.

(2) The protected commodities shall be limited to Class I through Class IV, Group B plastics, Group Cplastics, cartoned (expanded and unexpanded) Group A plastics, and exposed (unexpanded) Group Aplastics.

(3) Slats in slatted rack shelving shall be a minimum nominal 2 in. (51 mm) thick by maximum nominal 6in. (152 mm) wide, with the slats held in place by spacers that maintain a minimum 2 in. (51 mm)opening between each slat.

(4) Where K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice sprinklers are used, there shall be no slattedshelf levels in the rack above 12 ft (3.7 m). Open rack shelving using wire mesh shall be permitted forshelf levels above 12 ft (3.7 m).

(5) Transverse flue spaces at least 3 in. (76 mm) wide shall be provided at least every 10 ft (3.1 m)horizontally.

(6) Longitudinal flue spaces at least 6 in. (152 mm) wide shall be provided for double-row racks.


42 of 579 5/19/2014 1:50 PM

Longitudinal flue spaces shall not be required where ESFR sprinklers are used.

(7) The aisle widths shall be at least 7 1⁄2 ft (2.3 m).

(8) The maximum roof height shall be 27 ft (8.2 m) or 30 ft (9.1 m) where ESFR sprinklers are used.

(9) The maximum storage height shall be 20 ft (6.1 m).

(10) Solid plywood or similar materials shall not be placed on the slatted shelves so that they block the 2 in.(51 mm) spaces between slats, nor shall they be placed on wire mesh shelves.


Submitted on behalf of the SSD Redundancy Task Group. Proposed text eliminates duplicate/redundant text and is considered editorial.




All consolidate or elminate duplicate or redundanttext.

Public Comment No. 262-NFPA 13-2014 [Chapter14]





Related Item





Street Address:

City:

State:

Zip:



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Update the following sections of Chapter 17

17.1.1 This chapter shall apply to storage of plastic and rubber commodities stored in racks. Therequirements of Chapter 12 shall apply unless modified by this chapter. (See Section C.9.)

17.1.1.1 This chapter also shall be used to determine protection for commodities that are notentirely Group A plastics but contain such quantities and arrangements of Group A plastics thatthey are deemed more hazardous than Class IV commodities.

17.1.2.6 Sprinkler protection criteria for the storage of Group A plastic commodities on racks shallbe in accordance with Section 17.2 for storage up to 25 ft (7.6 m) and Section 17.3 for storage over25 ft (7.6 m).

17.1.10.2.1


17.2 Protection Criteria for Single-, Double-, and Multiple-Row Open Rack Storage of Group APlastic Commodities Stored with Storage Up to and Including 25 ft (7.6 m) in Height.

17.2.1 Control Mode Density/Area Sprinkler Protection Criteria for Single-, Double-, andMultiple-Row Racks for Plastics Commodities Stored Up to and Including 25 ft (7.6 m)in Height, with a Clearance to Ceiling Up to and Including 10 ft (3.1 m).

17.2.1.2 Ceiling Sprinkler Water Demand Storage Over 5 Ft in Height

17.2.1.2.1

For Group A plastic commodities in cartons, encapsulated or nonencapsulated in single-, double-,and multiple-row racks and with a clearance to ceiling up to and including 10 ft. (3.1 m), ceiling

sprinkler water demand in terms of density [gpm/ft2 (mm/min)] and area of operation [ft2 (m2)] shallbe selected from Figure 17.2.1.2.1(a) through Figure 17.2.1.2.1(f).

17.2.1.2.4* An option shall be selected from the appropriate Figure 17.2.1.2.1(a) through Figure17.2.1.2.1(f) given the storage height and clearance being protected. The density/area criteria at thetop of each option shall be applied to the ceiling sprinklers and the in-rack sprinklers shown in theoption (if any) shall be provided. Options that do not show multiple-row racks in the figures shallnot be permitted to protect multiple-row rack storage. Notes in each figure shall be permitted toclarify options or to present additional options not shown in the figures.

17.2.1.3

For storage of Group A plastics between 5 ft and 12 ft (1.5 m and 3.7 m) in height, the installationrequirements for extra hazard systems shall apply.

17.2.1.4* Exposed unexpanded Group A plastics protected with control mode density/areasprinklers shall be protected in accordance with one of the following:

17.2.1.5 In-Rack Sprinkler Requirements Where Control Mode Density/Area SprinklersAre Being Used at Ceiling.


The water demand for sprinklers installed in racks shall be based on simultaneous operation of themost hydraulically remote sprinklers as follows:

(1) Eight sprinklers where only one level is installed in racks

(2) Fourteen sprinklers (seven on each top two levels) where more than one level is installed inracks


Sprinklers in racks shall discharge at not less than 15 psi (1 bar) for all classes of commodities.


44 of 579 5/19/2014 1:50 PM

(See Section C.19.)

17.2.2 CMSA Sprinklers for Rack Storage of Plastics Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height.

17.2.2.1

Protection of single-, double-, and multiple-row rack storage for unexpanded Group A plasticcommodities shall be in accordance with Table 17.2.2.1.

17.2.2.2

Protection shall be provided as specified in Table 17.2.2.1 or appropriate NFPA standards in termsof minimum operating pressure and the number of sprinklers to be included in the design area.

17.2.2.5 Building steel shall not require special protection where Table 17.2.2.1 is applied asappropriate for the storage configuration.

17.2.2.6 In-Rack Sprinkler Requirements Where CMSA Sprinklers Are Used at Ceiling.


The water demand for sprinklers installed in racks shall be based on simultaneous operation of themost hydraulically remote eight sprinklers.


Sprinklers in racks shall discharge at not less than 15 psi (1 bar) for all classes of commodities.(See Section C.19.)

17.2.3* Early Suppression Fast-Response (ESFR) Sprinklers for Rack Storage ofPlastics Commodities Stored Up to and Including 25 ft (7.6 m) in Height.

17.2.3.2 ESFR sprinkler systems shall be designed such that the minimum operating pressure isnot less than that indicated in Table 17.2.3.1 for type of storage, commodity, storage height, andbuilding height involved.


17.2.3.4 In-Rack Sprinkler Requirements Where ESFR Sprinklers Are Used at Ceiling.

17.2.3.4.1 Where required by Table 17.2.3.1, in-rack sprinklers shall be installed at the first tierlevel at or above one-half of the storage height.

17.2.3.4.8

The water demand for sprinklers installed in racks shall be based on simultaneous operation of themost hydraulically remote eight sprinklers.

17.2.4 Special Design for Rack Storage of Plastics Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height.

17.3 Protection Criteria for Single-, Double-, and Multiple-Row Open Rack Storage of Group APlastic Commodities Stored with Storage Over 25 ft (7.6 m) in Height.

17.3.1 Control Mode Density/Area Sprinkler Protection Criteria for Rack Storage ofPlastics Commodities Stored Over 25 ft (7.6 m) in Height for Single-, Double-, andMultiple-Row Racks.

17.3.1.1

Protection of Group A plastics in cartons, expanded or unexpanded, whether encapsulated ornonencapsulated and with a clearance to ceiling up to and including 10 ft. (3.1 m), shall bepermitted using control mode density/area sprinklers in accordance with 17.3.1.

17.3.1.3* Ceiling Sprinkler Water Demand.

For Group A plastic commodities, encapsulated or nonencapsulated, ceiling sprinkler water

demand in terms of density [gpm/ft2 (mm/min)] and area of operation [ft2 (m2)] shall be selectedfrom Table 17.3.1.3.

17.3.1.13 In-Rack Sprinkler Water Demand.

The water demand for sprinklers installed in racks shall be based on simultaneous operation of themost hydraulically remote sprinklers as follows:

(1) Eight sprinklers where only one level is installed in racks


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(2) Fourteen sprinklers (seven on each top two levels) where more than one level is installed inracks

17.3.1.14 In-Rack Sprinkler Discharge Pressure.

Sprinklers in racks shall discharge at not less than 30 gpm (113.6 L/min).

17.3.1.15 The minimum water supply requirements for a hydraulically designed occupancy hazardfire control sprinkler system shall be determined by adding the hose stream allowance from Table17.3.1.15 to the water supply for sprinklers determined in Section 17.3.

17.3.2 CMSA Sprinklers for Rack Storage of Plastics Commodities Stored Over 25 ft(7.6 m) in Height

17.3.2.1

Protection of single-, double-, and multiple-row rack storage for cartoned, unexpandedGroup Aplastic commodities shall be in accordance with Table 17.3.2.1.

17.3.2.3 The design area shall be a rectangular area having a dimension parallel to the branchlines at least 1.2 times the square root of the area protected by the number of sprinklers to beincluded in the design area. Any fractional sprinkler shall be included in the design area.

17.3.2.4 Building steel shall not require special protection where Table 17.3.2.1 is applied asappropriate for the storage configuration.

17.3.3* Early Suppression Fast-Response (ESFR) Sprinklers for Rack Storage ofPlastics Commodities Stored Over 25 ft (7.6 m) in Height.

17.3.3.1

Protection of single-, double-, and multiple-row rack storage of cartoned or exposed,unexpandedGroup A plastic shall be in accordance with Table 17.3.3.1.

17.3.3.2

ESFR sprinkler systems shall be designed such that the minimum operating pressure is not lessthan that indicated in Table 17.3.3.1 for type of storage, commodity, storage height, and buildingheight involved.


17.3.3.4 Where required by Table 17.3.3.1, one level of K-8.0 (115) or K-11.2 (160) quick-response,ordinary-temperature in-rack sprinklers shall be installed at the tier level closest to but notexceeding one-half of the maximum storage height.

17.3.3.5.1

Protection of single-, double-, and multiple-row rack storage of exposed expanded Group A plasticsshall be permitted to be in accordance with 17.3.3.5.2 through 17.3.3.5.9.

17.3.3.5.4

Sprinklers shall be intermediate temperature–rated ESFR pendent sprinklers with a nominalK-factor of K-25.2 (360).


Submitted on behalf of the SSD Redundancy Task Group -- These changes are considered editorial and eliminate redundant and repeated text.



Public Comment No. 261-NFPA 13-2014 [Global Input] All address redundant and repeated text





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Public Comment No. 346-NFPA 13-2014 [Section No. 16.3]

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Make the following changes to Chapter 17 to consolidate in-rack requirements as in FR 317.

17.1.7 In-Rack Sprinklers.

17.1.7.1 The number of sprinklers and the pipe sizing on a line of sprinklers in racks shall berestricted only by hydraulic calculations and not by any piping schedule.

17.1.7.2 When in-rack sprinklers are necessary to protect a higher hazard commodity that occupiesonly a portion of the length of a rack, in-rack sprinklers shall be extended a minimum of 8 ft (2.4 m)or one bay, whichever is greater, in each direction along the rack on either side of the higher hazard.

17.1.7.2.1 The in-rack sprinklers protecting the higher hazard shall not be required to be extendedacross the aisle.

17.1.7.3 Where a storage rack, due to its length, requires less than the number of in-rack sprinklersspecified, only those in-rack sprinklers in a single rack need to be included in the calculation.

17.1.7.4 * In-rack Where in-rack sprinklers are installed in longitudinal flues, they shall be locatedat an intersection of transverse and longitudinal flues while not exceeding the maximum spacingrules.

17.1.7.4.1 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, andadditional sprinklers shall be installed between transverse flues to meet the maximum distancerules.

17.1.7.4.2 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximumspacing rules.

17.1.7.4.3 , In-rack sprinklers shall be installed with a minimum 6 in. (152 mm) vertical clear spacebetween the in-rack sprinkler deflectors and the top of a tier of storage.

.

17.1.7.4.3 17.1.7.4.4 For storage over 25 ft in height

17.1.7.4.4.1 In-rack sprinklers in longitudinal flues shall be installed

(a) with the deflector located at or below the bottom of horizontal load beams or above or belowother adjacent horizontal rack members, and

(b) such in-rack sprinklers shall be a minimum of 3 in. (76 mm) radially from the side of the rackuprights.

17.1.7.4.4.2 17.1.10.2.1


17.1.10.2 In single-, double-, or multiple-row racks, a minimum 6 in. (152 mm) vertical clear spaceshall be maintained between the in-rack sprinkler deflectors and the top of a tier of storage.

17.1.10.2.1


17.1.10.2.2 Such in-rack sprinklers shall be a minimum of 3 in. (76 mm) radially from the side ofthe rack uprights.

17.2.1.5.1 In-Rack Sprinkler Spacing Clearance. The minimum of 6 in. (152 mm) vertical clearspace shall be maintained between the sprinkler deflectors and the top of a tier of storage.

17.2.1.5.2 The spacing of in-rack sprinklers shall be in accordance with Figure 17.2.1.2.1(a)through Figure 17.2.1.2.1(f).

17.2.1.5.3* In-rack sprinklers shall be located at an intersection of transverse and longitudinal


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flues while not exceeding the maximum spacing rules.

Delete A.17.2.1.5.3



17.2.2.6 In-Rack Sprinkler Requirements Where CMSA Sprinklers Are Used at Ceiling.

17.2.2.6.1 In-rack sprinklers shall be installed at the first tier level at or above one-half of thestorage height.

17.2.2.6.2 The minimum of 6 in. (152 mm) vertical clear space shall be maintained between thesprinkler deflectors and the top of a tier of storage.

17.2.2.6.3* In-rack sprinklers shall be located at an intersection of transverse and longitudinalflues.

Delete A.17.2.2.6.3

17.2.2.6.4 The maximum horizontal distance between in- rack sprinklers shall be 5 ft (1.5 m).



17.2.3.4.3 The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between thesprinkler deflectors and the top of a tier of storage.

17.2.3.4.4 The maximum horizontal distance between in- rack sprinklers shall be 5 ft (1.5 m).

17.2.3.4.5* In-rack sprinklers shall be located at an intersection of transverse and longitudinalflues while not exceeding the maximum spacing rules.

Delete A.17.2.3.4.5



17.3.1.9 The minimum of 6 in. (152 mm) vertical clear space shall be maintained between thein-rack sprinkler deflectors and the top of a tier of storage.

17.3.1.10* In-rack sprinklers shall be located at an intersection of transverse and longitudinalflues while not exceeding the maximum spacing rules.

Delete A.17.3.1.10

17.3.1.11 Where distances between transverse flues exceed the maximum allowable distances,sprinklers shall be installed at the intersection of the transverse and longitudinal flues, andadditional sprinklers shall be installed between transverse flues to meet the maximum distancerules.

17.3.1.12 Where no transverse flues exist, in-rack sprinklers shall not exceed the maximumspaci1.10.2ng rules.

17.3.3.4.2 In-rack sprinklers shall be located at the intersection of the longitudinal and transverseflue space.

17.3.3.4.3 Horizontal spacing shall not be permitted to exceed 5 ft (1.5 m) intervals.

17.3.3.4.4 The minimum of 6 in. (152 mm) vertical clear space shall be maintained between the


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sprinkler deflectors and the top of a tier of storage.

17.3.3.4.5* In-rack sprinklers shall be located at an intersection of transverse and longitudinalflues while not exceeding the maximum spacing rules.

Delete A.17.3.3.4.5




Submitted on behalf of the SSD Redundancy Task Group. These changes are considered editorial and deletes the parts redundant with 17.1.7.4 (see Committee Statement on FR-317). Also added 6” clearance over top of load for all heights. That was not stated in 17.1.9 like it is in 17.1.10.2 but is in each section (17.2.1.5.1 / 17.2.2.6.2 / 17.2.3.4.3)












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16.1.6.7 When solid shelves obstruct only a portion of the rack, in-rack sprinklers shall be installed:

(a) horizontally, one flue beyond the end of the solid shelf

(b) vertically, all tiers beneath the solid shelves

16.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted wherein-rack sprinklers are installed in accordance with 16.1.6 . In-rack sprinklers shall be installed in every levelbelow the highest solid shelf.

16.2.3.2.1 Where solid shelves are used, in-rack sprinklers shall be installed in every level below thehighest solid shelf.

16.3.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted wherein-rack sprinklers are installed in accordance with 16.1.6 . In-rack sprinklers shall be installed in every levelbelow the highest solid shelf.

16.3.3.2.1 Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permitted wherein-rack sprinklers are installed in accordance with 16.1.6 . In-rack sprinklers shall be installed in every levelbelow the highest solid shelf.


We have no guidance on this issue for spray sprinklers. Considering that it applies to all sprinkler types, it should go in only the general section. If not, it needs to be repeated in 16.2.1The guidance on vertical placement is current text. There is no guidance on where to stop the horizontal placement of in-rack sprinklers for racks with only portions of the assembly having solid shelving. There is guidance in 16.1.8.2 on racks with just a portion containing a higher hazard commodity. This criteria requires extending the in-racks a full bay or 8 ft. whereas this PC extends it only one flue. This seems sufficient to halt the horizontal fire extension caused by the solid shelf.

Since section 16.1.6 is growing, we should consider renumbering into subsections.

The redundancy task group agreed with this PC without any changes.

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Organization: American Fire Sprinkler Association

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Submittal Date: Wed Mar 26 18:14:52 EDT 2014


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(PI-399) 16.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in everylevel below the highest solid barrier.

(PI-400) 16.2.3.2 ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unless thesolid shelf racks are protected with in-rack sprinklers in accordance with 16.1.6 . Where solid shelves areused, in-rack sprinklers shall be installed in every level below the highest solid barrier.

(PI-401) 16.3.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in everylevel below the highest solid barrier.

(PI-402) 16.3.3.2.1 Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in everylevel below the highest solid barrier.

(FR-219) 17.2.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in everylevel below the highest solid shelf.

(FR0220) 17.2.3.1.2 Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in everylevel below the highest solid shelf.

(FR-222) 17.3.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in everylevel below the highest solid shelf.

(FR-224) 17.3.3.1.1 ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unlessthe solid shelf racks are protected with in-rack sprinklers in accordance with 17.1.5. Where solid shelves areused, in-rack sprinklers shall be installed in every level below the highest solid shelf.


The redundancy task group agrees with this comment.

This comment addresses Correlating Committee Note 4 on the use of Open Rack and Note 11 on consistency

This comment simply deletes the offending text that conflicts with the classification of open criteria for section 16.2, 16.3, 17.2, and 17.3. This criteria addresses two issues. One is that CMSA and ESFR can be applied when solid shelving is present provided the criteria of 16.1.6 or 17.1.5 is also applied. This criteria is already stated for ESFR in 8.4.6.1.1. PC-81 will add this same text to 8.4.7 on CMSA. The second issue from the deleted criteria is that in-rack sprinklers shall be installed at every level below the highest level. This is addressed by PC 78 and 93 which puts this criteria in 16.1.6 and 17.1.5.Sections 16.2, 16.3, 17.2, and 17.3 are for open racks (synonymous to without solid shelving). In order to emphasis a change in philosophy or at least something never stated, one section (17.3.3.1.1) was added in the 2013 edition to clarify that ESFR could be used with solid shelving. We added it to 17.3 that historically has always been open rack criteria thinking what can it hurt. Now we’ve added similar criteria to all sections on CMSA and ESFR. This has rightly resulted in a challenge that 16.2, 16.3, 17.2, and 17.3 should no longer be called criteria for open racks. This is indeed a valid statement. Instead of throwing out what has always been known as open rack criteria, lets locate the miniscule amount of criteria that is not for open racks in section 8.4 and the general section for solid shelf racks where it rightly belongs.

When Solid shelving for any type of system appears, it’s addressed in the general sections 16.1.6 and 17.1.5. Although this section does not say for spray sprinklers, that is the current understanding since it wasn’t until the 2013 edition that it was identified that it also applies equally to ESFR and CMSA. This merits discussion as to whether additional text showing that 16.1.6 and 17.1.5 applies to CMSA and ESFR is warranted. Considering that this will be stated in 8.4.6 and 8.4.7 and that the suggested text on design criteria states all three types of sprinklers, that it is easily understood without any additional text.


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Public Comment No. 81-NFPA 13-2014 [New Section after 8.4.7.1]


Public Comment No. 84-NFPA 13-2014 [Section No. 17.1.5.5]



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Correlating Committee Note No. 4-NFPA 13-2013 [Global Input]




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3.9.3.7.9 Solid Shelf Rack. A rack where shelves are fixed in place with a solid, slatted, or wiremesh barrier used as the shelf material and having limited openings in the shelf area.

16.1.6 Solid Shelf Rack Shelving

16.2.1.3.5 For solid shelf rack shelving storage, Table 16.2.1.3.2 shall be used to establish thedensity/area criteria and in-rack sprinklers shall be instead in accordance with 16.1.6.

17.1.5 Solid Shelf Rack Shelving


As discussed in the Committee Statement, this term is currently used to differentiate an open rack arrangement from a solid shelf rack arrangement. That is exactly the problem since by definition of a solid shelf rack is an obstruction created ONLY by the rack itself (see 3.9.3.8). The references to this section and the title of this section use solid shelf rack. So the literal interpretation is that you go to 16.1.6 or 17.1.5 only when you have part of the rack construction creating an obstruction – period. It’s not until you get to this section that there is any discussion of solid shelving where the obstruction is created by the load. For many cycles the sprinkler industry addressed obstructions created by just the rack and great pains have been taken to point out that the obstructions includes that presented by the load. Why allow any possibility of confusion due to the old philosophy when the newer definition of Solid Shelving addresses all forms of obstructions and its use presents no ambiguity? This change greatly improves the fact that solid shelving and not just solid shelf racks are protected differently from that of open rack arrangements.

These are the only locations that use the phrase “solid shelf rack”. The all inclusive phrase solid shelving is far more prevalent.

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Public Input No. 81-NFPA 13-2013 [Section No. 16.2.1.3.5]


Public Input No. 77-NFPA 13-2013 [Section No. 3.9.3.7.9]




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Submittal Date: Thu Mar 27 15:28:22 EDT 2014


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14.2.3.1 The protection criteria for storage up to and including 12 ft (3.7 m), specified in shall be the sameas for miscellaneous storage selected from Chapter 13 shall be used.

14.2.3.2 The protection criteria in Chapter 13 shall be acceptable for storage of Class I to Class IVcommodities up to and including 12 ft (3.7 m) in height (see Table 13.2.1).

15.2.1 For the storage of Group A plastics stored 5 ft (1.5 m) or less in height, the sprinkler designprotection criteria for miscellaneous storage specified in Chapter 13 shall be used. The protection criteria inChapter 13 shall be acceptable for storage of Group A plastic commodities up to and including 5 ft (1.5 m)in height. (See Table 13.2.1 for specific Group A plastic storage height protection criteria.)

16.2.1.2.1 The protection criteria for storage up to and including 12 ft (3.7 m) specified in shall be the sameas miscellaneous storage from Chapter 13 shall be used.

16.2.1.2.2 The protection criteria in Chapter 13 shall be acceptable for storage of Class I through Class IVcommodities up to and including 12 ft (3.7 m) in height. (See Table 13.2.1 for specific Class I through ClassIV storage height protection criteria.)

16.2.1.2.3 For storage 12 ft (3.7 m) or less in height that does not meet the definition of MiscellaneousStorage that is on solid shelf racks, in-rack sprinklers shall be provided in accordance with 16.1.6 , andceiling sprinkler protection shall be provided in accordance with specified in Chapter 13 shall be used.

17.2.1.1* Storage 5 ft (1.5 m) or Less in Height. For the storage of Group A plastics stored 5 ft (1.5 m) orless in height, the sprinkler design criteria for miscellaneous storage The protection criteria specified inChapter 13 shall be used.

17.2.1.1.1 For storage 5 ft (1.5 m) or less in height that does not meet the definition of MiscellaneousStorage that is on solid shelf racks, in-rack sprinklers shall be provided in accordance with 17.1.5 , andceiling sprinkler protection shall be provided in accordance with specified in Chapter 13 shall be used.


Granted the criteria is technically accurate and not being aware of any confusion seems like a poor reason to reject providing a consistent format and terminology on how chapters 14, 15, 16, and 17 directs one on when to use chapter 13 for regular storage facilities. It’s never too late to improve the correlation of information within the standard and will only improve the efficiency of using the standard. Pick one template since all chapters are addressing the identical issue and use it throughout. This template is based on 17.2.1.1 except called it protection criteria instead of sprinkler design criteria as used in 14.2.3.1

Reference to the storage heights were deleted since that variable is identified in the title of each section. The new text from FR-296 and 297 was modified to correlate with the of the other related sections.

The redundancy task group made changes to the initial PC which resulted in the text shown here.




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Submittal Date: Fri Mar 28 11:37:20 EDT 2014


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11.2.3.1.4(3) 11.2.3.1.5 Unsprinklered Combustible Concealed Spaces

11.2.3.1.5.1 Unless the requirements of 11.2.3.1.4(4) 11.2.3.1.5.3 are met for buildings havingunsprinklered combustible concealed spaces, as described in 8.15.1.2 and 8.15.6, the minimum area ofsprinkler operation for that portion of the building shall be 3000 ft2 (279 m2).

11.2.3.1.5.2 The design area of 3000 ft2 (279 m2) shall be applied only to the sprinkler system or portionsof the sprinkler system that are adjacent to the qualifying combustible concealed space.

11.2.3.1.5.3 The term adjacent shall apply to any sprinkler system protecting a space above, below, or nextto the qualifying concealed space except where a barrier with a fire resistance rating at least equivalent tothe water supply duration completely separates the concealed space from the sprinklered area.

11.2.3.1.4 (4) 11.2.3.1.5.3 The following unsprinklered concealed spaces shall not ............


There were many parts to PI -114 and this issue was not addressed in the committee statement so don’t know if it was inadvertently overlooked. This corrects having multiple requirements in a single paragraph. Copied the format from 12.9. The issue of combustible concealed spaces is very common and having it's own title is much more user friendly verses the vague use of restrictions.




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17.1.5.8 When solid shelves obstruct only a portion of the rack, in-rack sprinklers shall be installed:

(a) horizontally, one flue beyond the end of the solid shelf

(b) vertically, all tiers beneath the solid shelves

(FR-219) 17.2.2.1.1

Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted where in-racksprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in every level belowthe highest solid shelf.

(FR-220) 17.2.3.1.2

Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permitted where in-rack sprinklersare installed in accordance with 17.1.5 . In-rack sprinklers shall be installed in every level below the highestsolid shelf.

(FR-222) 17.3.2.1.1 Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permittedwhere in-rack sprinklers are installed in accordance with 17.1.5 . In-rack sprinklers shall be installed inevery level below the highest solid shelf.

(FR-224) 17.3.3.1.1 ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unlessthe solid shelf racks are protected with in-rack sprinklers in accordance with 17.1.5. Where solid shelvesare used, in-rack sprinklers shall be installed in every level below the highest solid shelf.


We have no guidance on this issue for spray sprinklers. Considering that it applies to all sprinkler types, it should go in only the general section. If not, it needs to be repeated in 17.2.1 The guidance on vertical placement is current text. There is no guidance on where to stop the horizontal placement of in-rack sprinklers for racks with only portions of the assembly having solid shelving. There is guidance in 17.1.7.2 on racks with just a portion containing a higher hazard commodity. This criteria requires extending the in-racks a full bay or 8 ft. whereas this PC extends it only one flue. This seems sufficient to halt the horizontal fire extension caused by the solid shelf.

Since section 17.1.5 is growing, we should consider renumbering into subsections.





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Public Comment No. 134-NFPA 13-2014 [ Section No. 3.9.1.17 ]

3.9.1.17 Low-Piled Storage.

Solid-piled, palletized, rack storage, bin box, and shelf storage of Class I through IV commodities up toand including 12 ft (3.7 m) in height and solid-piled, palletized, rack storage, bin box, and shelf storage ofGroup A plastic commodities up to and including 5 ft in height .

Additional Proposed Changes

File Name Description Approved

LGK_NFPA_13-2013_Comment_3-9-1-17.pdf PC Form


As per the Committee Statement, this definition is intended to be used to reflect the contents of Chapter 13. Therefore it must be revised to better describe the types of commodities and the storage heights that Chapter 13 addresses. As it is currently proposed low-piled storage could easily be misinterpreted to apply to the storage of any products up to a height of 12 ft. However, except for the Miscellaneous storage provisions, it is only Class I through IV commodities that can be stored to 12 ft per Chapter 13. Group A plastics are only to 5 ft. Storage of Group A plastics above 5 ft are addressed in Chapters 15 and 17. Regardless of height, Rubber Tire storage is covered in Chapter 18 and Roll Paper storage is under Chapter 19.

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First Revision No. 311-NFPA 13-2013 [New Section after 3.9.1.17]


Submitter Full Name: Larry Keeping

Organization: Professional Loss Control

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3.9.1.17 Low-Piled Storage.

Solid-piled, palletized, rack storage, bin box, and shelf storage up to 12 ft (3.7 m) in height.


CC NOTE: The following CC Note No. 6 appeared in the First Draft Report as Global First Revision No. 311.

The TC should consider adding annex language stating that the definition is intended to separate the concepts of low- and high-piled storage, and is not intended to address allowable design approaches and protection schemes.

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Public Comment No. 10-NFPA 13-2014 [ Section No. 5.6.3.4.1 ]

5.6.3.4.1

A Class IV commodity shall be defined as a product, with or without pallets, that meets one of the followingcriteria:

(1) Constructed partially or totally of Group B plastics

(2) Consists of free-flowing Group A plastic materials

(3) Contains within itself or its packaging an appreciable amount of Group A plastics as indicated inFigure 5.6.3.4.1

Figure 5.6.3.4.1 Classification of Commodities Containing Group A or B Plastics.

Replace volue with volume in part 2


Editorial coorect spelling replacing volue with volume.

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First Revision No. 274-NFPA 13-2013 [Section No. 5.6]



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Submitter Full Name: Mark Fessenden

Organization: Tyco Fire Protection Products

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Submittal Date: Tue Mar 11 13:33:34 EDT 2014


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5.6.3.4.1

A Class IV commodity shall be defined as a product, with or without pallets, that meets one of the followingcriteria:

(1) Constructed partially or totally of Group B plastics

(2) Consists of free-flowing Group A plastic materials

Contains within itself or its packaging an appreciable amount of Group A plastics as indicated in

Delete Figure 5.6.3.4.1

Figure 5

and return the text of 5 .6.3.4.

1 Classification of Commodities Containing Group A or B Plastics.

1(3) to that of the 2013 edition of NFPA 13, as follows:

(1) Contains within itself or its packaging an appreciable amount (5 percent to 15 percent by weight or 5percent to 25 percent by volume) of Group A plastics.



LGK_NFPA_13-2013_Comment_5-6-3-4-1.pdf PC Form


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The proposed Figure 5.6.3.4.1 should not be accepted. The reason to adopt this chart is not supported by any valid substantiation. The existing provision is that a product can have up to 25% by volume or 15% by weight of Group A plastics and still be considered to be a Class IV commodity. As per this proposed Figure 5.6.3.4.1 however, if a product had just 20% by volume and 10% by weight, it would be classified as a Group A plastic. This extreme change is unjustified and should not be accepted.

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Public Comment No. 85-NFPA 13-2014 [ Section No. 11.1 [Excluding any Sub-Sections]

]

The requirements of Section 11.1 shall apply to all sprinkler systems unless modified by a specific sectionof Chapter 11 or Chapter 12 .


This comment should be addressed after the redundancy task group comments are resolved (PC's 107 / 109 / 110 / 111 / 112 / 230 / 231)

The public input did not attempt to move sections to ch 11. It attempted to delete repeated criteria in ch 12 that was already covered by section 11.1. We initially identified section 11.1 as applying to all systems and then started repeating many parts in chap 12. I think we do not give enough credit to the users thinking that they will not understand that other sections apply to storage. Afterall, many other sections (like 8.5, 8.6, the obscure 8.13.2 on in-rack criteria, ch 23, and ch 24) all contain criteria that also applies to storage. As such, there is no need to say that 11.1 applies to all systems and lets state it applies to the systems in ch 11 as implied by the unnecessary redundancy of criteria.

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188 of 579 5/19/2014 1:50 PM

Public Comment No. 157-NFPA 13-2014 [ Section No. 11.1.2 ]

11.1.2 * Adjacent Hazards or Design Methods.

For buildings with two or more adjacent hazards or design methods, the following shall apply:

(1) Where areas are not physically separated by a draft curtain, barrier, or partition capable of delayingheat from a fire in one area from fusing sprinklers in the adjacent area, the required sprinklerprotection for the more demanding design basis shall extend 15 ft (4.6 m) beyond its perimeter.

(2) The requirements of 11.1.2 (1) shall not apply where the areas are separated by a draft curtain,barrier ,or partition that is capable of delaying heat from a fire in one area from fusing sprinklers in theadjacent area.

(3) The requirements of 11.1.2 (1) shall not apply to the extension of more demanding criteria from anupper ceiling level to beneath a lower ceiling level where the difference in height between the ceilinglevels is at least 2 ft (0.6 m).



LGK_NFPA_13-2013_Comment_11-1-2.pdf PC Form


The addition of text referencing draft curtains was not requested in PI 192 and the Technical Committee has not provided any substantiation for the addition. Also, as per A.12.1.1.3, draft curtains have been shown to have a negative impact on sprinkler effectiveness and extreme care needs to be taken to minimize any potential impacts, so it is inappropriate to imply that they may be beneficial in the Section 11.1.2 discussion about adjacent hazards or design methods.

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Submittal Date: Mon Apr 28 08:51:56 EDT 2014


189 of 579 5/19/2014 1:50 PM

Public Comment No. 333-NFPA 13-2014 [ New Section after 11.1.6.3 ]

11.1.6.3.1

Where the system is a combined sprinkler/standpipe system and the building is fully sprinklered inaccordance with NFPA 13, no inside hose demand is required at any of the standpipe outlets.


In one edition of NFPA 13 (2007) the requirement for 50 gpm to be added at the two most remote standpipe outlets for combined sprinkler/standpipe systems was added to the annex (A.11.1.5.6). This caused problems for two reasons. The first problem is that it violated section 11.1.5.6 in the body of the standard, which stated that the standpipe and sprinkler demands were not required to be added together. The second problem was that the rule was in the annex, where it was not enforceable.

The committee reviewed the subject again in while writing the 2010 edition of the standard and agreed that the 50 gpm inside hose demand is not required at the standpipe outlets, so they took this annex note out of the standard. But no clarification was added to the standard and the question continues to come up. The situation needs to be clarified for the user that the flow for the standpipe system is calculated separately and is not required to be added, in whole or in part, to the sprinkler flow demand.

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Submitter Full Name: Robert Upson

Organization: National Fire Sprinkler Association

Affilliation: NFSA Engineering and Standards Committee

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190 of 579 5/19/2014 1:50 PM



191 of 579 5/19/2014 1:50 PM

11.2.3.1.4 Restrictions.


192 of 579 5/19/2014 1:50 PM

When either the density/area method or room design method is used, the following shall apply:

(1)

(2) For areas of sprinkler operation less than 2500 ft2 (232 m2) for extra hazard occupancies, the density

for 2500 ft2 (232 m2) shall be used.

(3)

(4) The following unsprinklered concealed spaces shall not require a minimum area of sprinkler operation

of 3000 ft 2 (279 m 2 ):

(5) Noncombustible and limited-combustible concealed spaces with minimal combustible loadinghaving no access. The space shall be considered a concealed space even with small openingssuch as those used as return air for a plenum.

(6) Noncombustible and limited-combustible concealed spaces with limited access and notpermitting occupancy or storage of combustibles. The space shall be considered a concealedspace even with small openings such as those used as return air for a plenum.

(7) Combustible concealed spaces filled entirely with noncombustible insulation.

(8)

(9) Concealed spaces where rigid materials are used and the exposed surfaces have a flamespread index of 25 or less and the materials have been demonstrated to not propagate fire morethan 10.5 ft (3.2 m) when tested in accordance with ASTM E 84, Standard Test Method ofSurface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard for Test forSurface Burning Characteristics of Building Materials , extended for an additional 20 minutes inthe form in which they are installed in the space.

(10) Concealed spaces in which the exposed materials are constructed entirely of fire-retardanttreated wood as defined by NFPA 703.

(11) Concealed spaces over isolated small compartments not exceeding 55 ft 2 (5.1 m 2 ) in area.

(12) Vertical pipe chases under 10 ft 2 (0.93 m 2 ), provided that in multifloor buildings the chasesare firestopped at each floor using materials equivalent to the floor construction, and wheresuch pipe chases shall contain no sources of ignition, piping shall be noncombustible, and pipepenetrations at each floor shall be properly sealed.

(13) Exterior columns under 10 ft 2 (0.93 m 2 ) in area formed by studs or wood joists, supportingexterior canopies that are fully protected with a sprinkler system.

(14)

* For areas of sprinkler operation less than 1500 ft2 (139 m2) used for light and ordinary hazard

occupancies, the density for 1500 ft2 (139 m2) shall be used.

* Unless the requirements of 11.2.3.1.4 (4) are met for buildings having unsprinklered combustibleconcealed spaces, as described in 8.15.1.2 and 8.15.6 , the minimum area of sprinkler operation

for that portion of the building shall be 3000 ft 2 (279 m 2 ). The design area of 3000 ft 2 (279 m 2 )shall be applied only to the sprinkler system or portions of the sprinkler system that are adjacent tothe qualifying combustible concealed space. The term adjacent shall apply to any sprinkler systemprotecting a space above, below, or next to the qualifying concealed space except where a barrierwith a fire resistance rating at least equivalent to the water supply duration completely separates theconcealed space from the sprinklered area.

* Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilingsare directly attached to the bottom of solid wood joists or solid limited-combustible construction

or noncombustible construction so as to create enclosed joist spaces 160 ft 3 (4.5 m 3 ) orless in volume, including space below insulation that is laid directly on top or within the ceilingjoists in an otherwise sprinklered concealed space.

* Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilingsare attached to the bottom of composite wood joists either directly or on to metal channels notexceeding 1 in. (25.4 mm) in depth, provided the adjacent joist channels are firestopped into

volumes not exceeding 160 ft 3 (4.5 m 3 ) using materials equivalent to 1 ⁄ 2 in. (12.7 mm)

gypsum board and at least 3 1 ⁄ 2 in. (90 mm) of batt insulation is installed at the bottom ofthe joist channels when the ceiling is attached utilizing metal channels.


193 of 579 5/19/2014 1:50 PM


This criteria applies to all types of facilities using the density/area method so should be located in 11.1. Having this text in both section 11.2.3.1.4 and 12.9 is unnecessary redundancy. Although this comment shows this text as deleted, it was relocated using text from 12.9 in a separate comment. Note that the current text in 11.2.3.1.4(3) violates the format process on not having multiple criteria in a single paragraph.

The redundancy task group agrees with this PC




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194 of 579 5/19/2014 1:50 PM


11.3.1.3

Unless the requirements of 11.3.1.4 are met, the minimum required discharge from each design areasprinkler shall be the greater of the following:

(1) In accordance with minimum flow rates indicated in the sprinkler listings

(2) In rooms or compartments greater than 800 ft² (74.3 m 2 ) protected with more than 4 sprinklers ,

calculated based on delivering a minimum of 0.1 gpm/ft2 (4.1 mm/min) over the design area inaccordance with the provisions of 8.5.2.1

(3) In rooms or compartments 800 ft 2 (74.3 m 2 ) or less calculated compartments protected with 4 or

fewer sprinklers, calculated based on delivering a minimum of 0.1 gpm/ft2 (4.1 mm/min) over theroom or the compartment using the area of the room divided by the number of sprinklers in the room


During the First Draft phase I questioned the validity of the 800 square foot area and the extension of the concept of the "small room rule" beyond upright and pendent sprinklers. While the latter point may not be a problem, the 800 square foot area can be problematic. It is conceivable that an 800 square foot room may be protected by more than 4 residential sprinklers and the design area is defined as four sprinklers. Therefore, using an average density over the room when more than 4 sprinklers are protecting the room is not appropriate.

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Submitter Full Name: William Koffel

Organization: Koffel Associates, Inc.

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195 of 579 5/19/2014 1:50 PM


11.3.1.4

For modifications or additions to existing systems equipped with residential sprinklers, the listed discharge

criteria less than 0.1 gpm/ft2 (4.1 mm/min) shall be permitted to be used.


CC NOTE: The following CC Note No. 20 appeared in the First Draft Report.

The TC should review the following language that was included as an FR in NFPA 13D. The SSI TC reviewed similar language and chose not to create an FR, however this language was modified to alleviate some of the concerns raised about the original proposed verbiage."Where replacing residential sprinklers manufactured prior to 2003 and installed using a design density less than 0.05 gpm/ft2 (204 mm/min), a residential sprinkler with an equivalent K-factor (± 5%) shall be permitted to be used provided the currently listed coverage area for the replacement sprinkler is not exceeded."

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Correlating Committee Note No. 20-NFPA 13-2013 [Section No. 11.3.1.4]




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196 of 579 5/19/2014 1:50 PM

Public Comment No. 326-NFPA 13-2014 [ New Section after 12.1.3.1.3.2 ]

12.1.3.1.4*

Where the building height changes within a compartment the sprinklers directly over the storage shall becapable of protecting storage directly beneath. In situations where a barrier to heat and smoke inaccordance with 12.3(2) or 12.3(3) are not present, the sprinkler criteria 15 feet into the perimeter of thelower ceiling area shall be the same as the sprinkler protection for the high ceiling area.


This proposal clarifies the proper design height requirements for sprinklers under a roof with a pitch of 2:12 or less.

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197 of 579 5/19/2014 1:50 PM

Public Comment No. 75-NFPA 13-2014 [ Sections 12.1.3.4.2, 12.1.3.4.3, 12.1.3.4.4,

12.1.3.4.5, 12... ]

Sections 12.1.3.4.2, 12.1.3.4.3, 12.1.3.4.4, 12.1.3.4.5, 12.1.3.4.6, 12.1.3.4.7, 12.1.3.4.8

12.1.3.4.2

For spray sprinkler criteria where the clearance to ceiling exceeds those identified in this section, therequirements of 12.1.3.4.3 through 12.1.3.4.8 shall apply.

12.1.3.4.3

Where the clearance to ceiling exceeds 20 ft (6.1 m) for Chapters 14 and 15, protection shall be basedupon the storage height that would result in a clearance to ceiling of 20 ft (6.1 m).

Protection of Class I-IV commodities with excessive clearance from the top of storage to the ceilingsprinkler deflectors shall be in accordance with Table 12.1.3.4.

4

Where the clearance to ceiling exceeds 20 ft (6.1 m) for Section 16.2 , protection shall be based upon thestorage height that would result in a clearance to ceiling of 20 ft (6.1 m) or providing one level ofsupplemental, quick-response in-rack sprinklers located directly below the top tier of storage and at everyflue space intersection.

12.1.3.4.5

Where the clearance to ceiling exceeds 10 ft (3.1 m) for Section 16.3 or Section 17.2 , protection shall bebased upon the storage height that would result in a clearance to ceiling of 10 ft (3.1 m) or providing onelevel of supplemental, quick-response in-rack sprinklers located directly below the top tier of storage and atevery flue space intersection.

12.1.3.4.6

Where the clearance exceeds 10 ft (3.1 m) for Section 17.3 , protection shall be based upon providing onelevel of supplemental, quick-response in-rack sprinklers located directly below the top tier of storage and atevery flue space intersection.

12.1.3.4.7

When applying the supplemental in-rack sprinkler option, the ceiling density shall be based upon the givenstorage height with an assumed acceptable clearance to ceiling.

2(a).

Protection of Plastic and Rubber commodities with excessive clearance from the top of storage to theceiling sprinkler deflectors shall be in accordance with Table 12.1.3.4.

8

If in-rack sprinklers are required for the actual storage height with an acceptable clearance to ceiling,in-rack sprinklers shall be installed as indicated by that criteria

2(b) .



NFPA_13_Proposed_Tables_12.1.3.4.3_a_and_b_.docx Proposed Tables 12.1.3.4.3(a) and (b)

NFPA_13_Proposed_Tables_12.1.3.4.3_a_and_b_.pdfPDF version includes notations of the replaced section for each row


Section 12.1.3.4 (Clearance to Ceiling) contains numerous criteria, in which critical protection criteria for excessive clearance is obscured in subsections 12.1.3.4.3 through 12.1.3.4.8. These are even less prominent than the 2010 edition in which Section 12.1.3.4 was entitled "Excessive Clearance." Furthermore, the narratives of the sections are cumbersome, referring to other chapter sections with no commodity description. The proposed Tables will draw attention to and define the various storage configurations. In addition to incorporation of this Table into Chapter 12, it is recommended that appropriate sections of Chapters 14, 15, 16, and 17 refer to these critical


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Tables in Chapter 12. Specifically, "maximum storage height" in the Tables in Chapter 14, 15, 16 and 17 should reference the minimum presumed heights mandated when excessive clearance occurs.

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Submitter Full Name: Lisa Bossert

Organization: Naval Facilities Engineering Command - Fire Protection Engineering Department

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199 of 579 5/19/2014 1:50 PM

Table 12.1.3.4.2(a) Class I through Class IV Commodities

Storage Configuration

Where the clearance to

ceiling exceeds

Protection shall be based upon the storage height that would result in a clearance to ceiling of…

In-rack sprinklers (see Footnote 1)

Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage

20 ft

20 ft

N/A

Rack Storage Up to and Including 25 ft in Height

20 ft

20 ft

permitted

as alternative to presumed clearance of 20 ft

Rack Storage Over 25 ft in Height

10 ft

10 ft

permitted as alternative to presumed

clearance of 10 ft

Footnote 1: When applying the supplemental in-rack sprinkler option, the ceiling density shall be based

upon the given storage height with an assumed acceptable clearance to ceiling. Provide one level of

supplemental, quick response in-rack sprinklers located directly below the top tier of storage and at every

flue space intersection.

Table 12.1.3.4.2(b) Plastics and Rubber Commodities



ceiling exceeds




20 ft

20 ft

N/A


10 ft

10 ft

permitted



10 ft

N/A

required

Footnote 1: If in-rack sprinklers are required for the actual storage height with an acceptable clearance to

ceiling, in-rack sprinklers shall be installed as indicated by that criteria. Provide one level of supplemental,

quick response in-rack sprinklers located directly below the top tier of storage and at every flue space

intersection.

Table 12.1.3.4.2(a) Class I through Class IV Commodities Storage Configuration


ceiling exceeds




20 ft

20 ft

N/A


20 ft

20 ft

permitted



10 ft

10 ft

permitted as alternative to presumed

clearance of 10 ft

Footnote 1: When applying the supplemental in-rack sprinkler option, the ceiling density shall be based upon the given storage height with an assumed acceptable clearance to ceiling. Provide one level of supplemental, quick response in-rack sprinklers located directly below the top tier of storage and at every flue space intersection.

Table 12.1.3.4.2(b) Plastics and Rubber Commodities



ceiling exceeds




20 ft

20 ft

N/A


10 ft

10 ft

permitted



10 ft

N/A

required

Footnote 1: If in-rack sprinklers are required for the actual storage height with an acceptable clearance to ceiling, in-rack sprinklers shall be installed as indicated by that criteria. Provide one level of supplemental, quick response in-rack sprinklers located directly below the top tier of storage and at every flue space intersection.

lisa.bossert

Text Box

replaces 12.1.3.4.3

lisa.bossert

Text Box

replaces 12.1.3.4.4

lisa.bossert

Text Box

replaces 12.1.3.4.5

lisa.bossert

Text Box

replaces 12.1.3.4.3

lisa.bossert

Text Box

replaces 12.1.3.4.5

lisa.bossert

Text Box

replaces 12.1.3.4.6


12.1.4 * High Volume Low Speed (HVLS) Fans.

12.1.4.1

The installation of HVLS fans in buildings equipped with sprinklers, including ESFR sprinklers, shall complywith the following:

(1) The maximum fan diameter shall be 24 ft (7.3 m).

(2) The HVLS fan shall be centered approximately between four adjacent sprinklers.

(3) The vertical clearance from the HVLS fan to sprinkler deflector shall be a minimum of 3 ft (0.9 m).

(4) All HVLS fans shall be interlocked to shut down immediately upon receiving a waterflow signal fromthe alarm system in accordance with the requirements of NFPA 72 .


The redundancy task group agrees with this PC.

This is already addressed by 11.1.7.

There is significant redundancy in ch 12 that is already covered in 11.1. The reason for rejection of the PI was that moving criteria to ch 11 might confuse the users. First off, most of the suggested changes were already in 11.1 so it is not being moved. This change just emphasizes we do not need to repeat ourselves. The fact that a user has to go to a different section poses no great burden since they have to go to multiple chapters for every job (especially since we have in-rack criteria hidden in 8.13.2 and no one is losing sleep about that being confusing). Using 11.1 for criteria applicable to all systems is not a hurdle and it does provide better consistency. Keep in mind that if we repeat most but not all criteria, that implies the items not repeated do not apply. That’s a bigger problem than the perception that the users are not bright enough to realize that 11.1 also applies to all systems including storage as stated in 11.1. The bigger the document gets the more different it is to use. Additionally, chap 12 is criteria just for storage and unnecessary redundancy of criteria for all systems obscures the criteria that is truly unique to storage.

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Submittal Date: Thu Apr 10 18:19:04 EDT 2014


200 of 579 5/19/2014 1:50 PM

Public Comment No. 158-NFPA 13-2014 [ Section No. 12.3 ]

12.3 * Adjacent Hazards or Design Methods.


(1) Where areas are not physically separated by a barrier or partition capable of delaying heat from a firein one area from fusing sprinklers in the adjacent area, the required sprinkler protection for the moredemanding design basis shall extend 15 ft (4.6 m) beyond its perimeter.

(2) The requirements of 12.3 (1) shall not apply where the areas are separated by a draft curtain, barrier,or partition that is capable of delaying heat from a fire in one area from fusing sprinklers in theadjacent area.

(3) The requirements of 12.3 (1) shall not apply to the extension of more demanding criteria from anupper ceiling level to beneath a lower ceiling level where the difference in height between the ceilinglevels is at least 2 ft (0.6 m).



LGK_NFPA_13-2013_Comment_12-3.pdf PC Form


The addition of text referencing draft curtains was not requested in PI 193 and the Technical Committee has not provided any substantiation for the addition. Further since a draft curtain does not go from floor-to-ceiling, the reference to it is in conflict with the ideas expressed in the 4th paragraph of A.12.3. Also, as per A.12.1.1.3, draft curtains have been shown to have a negative impact on sprinkler effectiveness and extreme care needs to be taken to minimize any potential impacts, so it is inappropriate to imply that they may be beneficial in the Section 12.3 discussion about adjacent hazards or design methods.

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First Revision No. 193-NFPA 13-2013 [Section No. 12.4.3]




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201 of 579 5/19/2014 1:50 PM


12.3 * Adjacent Hazards or Design Methods.


(1) Where areas are not physically separated by a barrier or partition capable of delaying heat from a firein one area from fusing sprinklers in the adjacent area, the required sprinkler protection for the moredemanding design basis shall extend 15 ft (4.6 m) beyond its perimeter.

(2) The requirements of 12.3 (1) shall not apply where the areas are separated by a draft curtain,barrier,or partition that is capable of delaying heat from a fire in one area from fusing sprinklers in theadjacent area.

(3) The requirements of 12.3 (1) shall not apply to the extension of more demanding criteria from anupper ceiling level to beneath a lower ceiling level where the difference in height between the ceilinglevels is at least 2 ft (0.6 m).


redundancy task group agrees with this PC

Already addressed by 11.1.2

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202 of 579 5/19/2014 1:50 PM


12.6.7.1

ESFR sprinklers designed to meet any criteria in Chapter 12 or Chapter 14 through Chapter 20 shall bepermitted to protect any of the following:

(1) Light hazard occupancies

(2) Ordinary hazard occupancies

(3) Any storage arrangement in Chapter 13 referencing OH1, OH2, EH1, and EH2 design criteria





Chapter 12 contains ESFR criteria for protecting idle pallet storage, so that chapter should be referenced in this provision as well.

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203 of 579 5/19/2014 1:50 PM


12.6.7.2

Quick-response CMSA sprinklers designed to meet any criteria in Chapter 12 or Chapter 14 throughChapter 20 shall be permitted to protect any of the following:

(1) Light hazard occupancies







Chapter 12 contains CMSA criteria for protecting idle pallet storage, so that chapter should be referenced in this provision as well.

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204 of 579 5/19/2014 1:50 PM


12.6.7.3

Standard-response CMSA sprinklers designed to meet any criteria in Chapter 12 or Chapter 14 throughChapter 20 shall be permitted to protect any of the following:







Chapter 12 contains CMSA criteria for protecting idle pallet storage, so that chapter should be referenced in this provision as well.

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205 of 579 5/19/2014 1:50 PM


12.7.2 * Systems with Multiple Hazard Classifications.

For systems with multiple hazard classifications, the hose stream allowance and water supply durationshall be in accordance with Section 12.8 as well as one of the following:

(1) The water supply requirements for the highest hazard classification within the system shall be used.

(2) The water supply requirements for each individual hazard classification shall be used in thecalculations for the design area for that hazard.

(3)



This is addressed by 11.1.6.1


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* For systems with multiple hazard classifications where the higher classification only lies within

single rooms less than or equal to 400 ft 2 (37.2 m 2 ) in area with no such rooms adjacent, thewater supply requirements for the principal occupancy shall be used for the remainder of thesystem.


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12.7.6

Total system water supply requirements shall be determined in accordance with the hydraulic calculationprocedures of Chapter 23.

12.7.6.1

When using the density/area method, the design area shall meet the requirements of 23.4.4.2.1 .

12.7.6.2

When using CMSA, the design area shall meet the requirements of 23.4.4.3.1 .

12.7.6.3

When using ESFR sprinklers, the design area shall consist of the most hydraulically demanding area of 12sprinklers, consisting of four sprinklers on each of three branch lines, unless other specific numbers ofdesign sprinklers are required in other sections of this standard.


This is adequately addressed by 11.1.3. including referencing section 23.4. The users are fully aware that only the sections applicable to the specific sprinkler type applies so no need to reference subsections of 23.4. There is certainly no value in repeating that ESFR is 12 sprinkler on 4 branch lines.


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207 of 579 5/19/2014 1:50 PM

Public Comment No. 110-NFPA 13-2014 [ Sections 12.8.1, 12.8.2, 12.8.3, 12.8.4, 12.8.5 ]

Sections 12.8.1, 12.8.2, 12.8.3, 12.8.4, 12.8.5

12.8.1 *

Tanks shall be sized to supply the equipment that they serve.

12.8.2 *

Pumps shall be sized to supply the equipment that they serve.

12.8.3

Water allowance for outside hose shall be added to the sprinkler requirement at the connection to the citymain or a yard hydrant, whichever is closer to the system riser.

12.8.4

Where inside hose connections are planned or are required, the following shall apply:

(1) A total water allowance of 50 gpm (189 L/min) for a single hose connection installation shall be addedto the sprinkler requirements.

(2) A total water allowance of 100 gpm (378 L/min) for a multiple hose connection installation shall beadded to the sprinkler requirements.

(3) The water allowance shall be added in 50 gpm (189 L/min) increments beginning at the most remotehose connection, with each increment added at the pressure required by the sprinkler system designat that point.

12.8.5

When hose valves for fire department use are attached to wet pipe sprinkler system risers in accordancewith 8.17.5.2 , the following shall apply:

(1) The water supply shall not be required to be added to standpipe demand as determined from NFPA14.

(2) Where the combined sprinkler system demand and hose stream allowance of Chapter 12 andChapters 14 through 20 exceeds the requirements of NFPA 14, this higher demand shall be used.

(3) For partially sprinklered buildings, the sprinkler demand, not including hose stream allowance, asindicated in Chapter 12 and Chapters 14 through 20 shall be added to the requirements given inNFPA 14.



Already addressed by 11.1.5.2, 11.1.5.3, 11.1.6.2,11.1.6.3, and 11.1.6.4.


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209 of 579 5/19/2014 1:50 PM

Public Comment No. 311-NFPA 13-2014 [ Section No. 12.8.6 [Excluding any

Sub-Sections] ]


210 of 579 5/19/2014 1:50 PM

Unless indicated otherwise, the minimum water supply requirements for a hydraulically designed sprinklersystem shall be determined by adding the hose stream allowance from Table 12.8.6 to the water demandfor sprinklers.

Table 12Table 12 .8.

6 Hose6 Hose Stream Allowance and Water Supply Duration

CommoditySprinkler Type

SprinklerSpacingType

Number ofCeiling

Sprinklers inDesign Area

*

Size ofDesignArea at

Ceiling

Hose StreamAllowance

WaterSupply

Duration

(minutes)

gpm L/min

Control mode density/area Standard and extended-coverage

min

Class I-IVCommodities,

Group Aplastics, idlewood pallets,

idle plasticpallets and

miscellaneousstorage

Control ModeDensity/Area

(CMDA)

Standardand

ExtendedCoverage

NAUp to 1200

ft 2 (

111 m

111m 2 ) 250 950 60

Over 1200

ft 2 (

111 m

111m 2 ) up

to 1500 ft 2

(

139 m

139m 2 ) 500 1900 90

Over 1500

ft 2 (

139 m


211 of 579 5/19/2014 1:50 PM

139m 2 ) up

to 2600 ft 2

(

240 m

240m 2 ) 500 1900 120

Over 2600

ft 2 (

240 m

240m 2 ) 500 1900 150

Control ModeSpecific

Application( CMSA )

Standard

Up to 12 NA 250 950 60

Over 12 to 15 NA 500 1900 90

Over 15 to 25 NA 500 1900 120

Over 25 NA 500 1900 150

Extended

-coverage

CoverageUp to 6 NA 250 950 60

Up to 8 144

ft 2

ft2 (13.

4 m 2

4m2 ) maximum 250 950 60

Over 6 to 8 NA 500 1900 90

Over 8 to 12 NA 500 1900 120

Over 12 NA 500 1900 150

EarlySuppression

Fast Response( ESFR )

Standard

Up to 12 NA 250 950 60

Over 12 to 15 NA 500 1900 90

Over 15 to 25 NA 500 1900 120

Over 25 NA 500 1900 150

NA: Not applicable.

* For CSMA and ESFR sprinklers the additional sprinklers included in the design area for obstructions donot need to be considered in determining the total number of sprinklers in this column


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On-floorrubber tire

storage up to5 ft (1.5m) in

height

All

Standardand

ExtendedCoverage

Any Any 250 950 120

Rubber TireStorage

CMDA

Standardand

ExtendedCoverage

NA

Up to 5000

ft 2

(464m 2 )

750 2850 180

CMSA Standard Up to 15 NA 500 1900 180

ESFR Standard

Up to 12 NA 250 950 60

Over 12 to20

NA 500 1900 180

Roll Paper

CMDA Standard NA

Up to 4000

ft 2

(372m 2 )

500 1900 120


ESFR Standard Up to 12 NA 250 950 60

NA: Not applicable .



NFPA13-2016-FD-NFSA-FRs-Water-Supply.pdf

Table 12.8.6.1 Hose Stream Allowance and Water Supply Duration


These additions to Table 12.8.6 and related sections consolidate water supply information from chapters 18 and 19 into a single source in the general requirements for storage chapter for clarity.

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213 of 579 5/19/2014 1:50 PM

Action Items from Spring 2014 E & S Meeting for NFPA 13 (2016) FR (Upson) Closes 5/16/14 @ 1700 ET

15

Item15–WaterSupplies

Proposed:Table 12.8.6.1 Hose Stream Allowance and Water Supply Duration

Commodity Sprinkler Type Sprinkler Spacing Type

Number of Ceiling

Sprinklers in Design Area

Size of Design Area at Ceiling

Hose Stream Allowance

Water Supply Duration

gpm L/min min

Class I‐IV Commodities,

Group A plastics, idle wood pallets, idle plastic pallets and

miscellaneous storage

Control Mode Density/Area

(CMDA)

Standard and

Extended Coverage

NA

Up to 1200 ft2 (111m2)

250 950 60

Over 1200 ft2 (111m2)

up to 1500 ft2 (139m2)

500 1900 90

Over 1500 ft2 (139m2)

up to 2600 ft2 (240m2)

500 1900 120

Over 2600 ft2 (240m2)

500 1900 150

Control Mode Specific

Application (CMSA)

Standard

Up to 12 NA 250 950 60

Over 12 to 15 NA 500 1900 90

Over 15 to 25 NA 500 1900 120

Over 25 NA 500 1900 150

Extended Coverage

Up to 6 NA 250 950 60

Up to 8 144 ft2 (13.4m2) maximum

250 950 60

Over 6 to 8 NA 500 1900 90

Over 8 to 12 NA 500 1900 120

Over 12 NA 500 1900 150

Early Suppression Fast Response

(ESFR) Standard

Up to 12 NA 250 950 60

Over 12 to 15 NA 500 1900 90

Over 15 to 25 NA 500 1900 120

Over 25 NA 500 1900 150

On‐floor rubber tire

storage up to 5 ft (1.5m) in height

All

Standard and

Extended Coverage

Any Any 250 950 120

Rubber Tire Storage

CMDA

Standard and

Extended Coverage

NA Up to 5000 ft2 (464m2)

750 2850 180



Over 12 to 20 NA 500 1900 180

Roll Paper

CMDA Standard NA Up to 4000 ft2 (372m2)

500 1900 120




12.9 11.1.8 Restrictions.

12 11 .9 1 .8. 1*

When using the density/area method or room design method, unless the requirements of 12.9.2 are metfor buildings having unsprinklered combustible concealed spaces as described in 8.15.1.2 and 8.15.6, the

minimum area of sprinkler operation for that portion of the building shall be 3000 ft2 (279 m2).

12 11 .9 1 .8. 1.1

The design area of 3000 ft2 (279 m2) shall be applied only to the sprinkler system or portions of thesprinkler system that are adjacent to the qualifying combustible concealed space.

12 11 .9 1 .8. 1.2

The term adjacent shall apply to any sprinkler system protecting a space above, below, or next to thequalifying concealed space except where a barrier with a fire resistance rating at least equivalent to thewater supply duration completely separates the concealed space from the sprinklered area.


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12 11 .9 1 .8. 2

The following unsprinklered combustible concealed spaces shall not require a minimum design area of

sprinkler operation of 3000 ft2 (279 m2):

(1) Noncombustible and limited-combustible concealed spaces with minimal combustible loading havingno access. The space shall be considered a concealed space even with small openings such as thoseused as return air for a plenum.

(2) Noncombustible and limited-combustible concealed spaces with limited access and not permittingoccupancy or storage of combustibles. The space shall be considered a concealed space even withsmall openings such as those used as return air for a plenum.


(4) Concealed spaces where rigid materials are used and the exposed surfaces have a flame spreadindex of 25 or less and the materials have been demonstrated to not propagate fire more than 10.5 ft(3.2 m) when tested in accordance with ASTM E 84, Standard Test Method for Surface BurningCharacteristics of Building Materials, or ANSI/UL 723, Standard for Test for Surface BurningCharacteristics of Building Materials, extended for an additional 20 minutes in the form in which theyare installed in the space.

(5) Concealed spaces in which the exposed materials are constructed entirely of fire retardant–treatedwood as defined by NFPA 703.

(6) Concealed spaces over isolated small compartments not exceeding 55 ft2 (5.1 m2) in area.

(7) Vertical pipe chases under 10 ft2 (0.93 m2), provided that in multifloor buildings the chases arefirestopped at each floor using materials equivalent to the floor construction. Such pipe chases shallcontain no sources of ignition, piping shall be noncombustible, and pipe penetrations at each floorshall be properly sealed.

(8) Exterior columns under 10 ft2 (0.93 m2) in area formed by studs or wood joists, supporting exteriorcanopies that are fully protected with a sprinkler system.

(9)

(9) *Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilingsare directly attached to the bottom of solid wood joists so as to create enclosed joist spaces 160 ft3(4.5 m3) or less in volume, including space below insulation that is laid directly on top or within theceiling joists in an otherwise sprinklered concealed space.

(10) *Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilingsare attached to the bottom of composite wood joists either directly or on to metal channels notexceeding 1 in. (25.4 mm) in depth, provided the adjacent joist channels are firestopped intovolumes not exceeding 160 ft3 (4.5 m3) using materials equivalent to 1⁄2 in. (12.7 mm) gypsumboard and at least 31⁄2 in. (90 mm) of batt insulation is installed at the bottom of the joist channelswhen the ceiling is attached utilizing metal channels.


This criteria is not unique to storage but applies to all types of facilities. It should be located in 11.1 so as to avoid unnecessary redundancy. The two sections that we removed at the first draft meeting that refer to an occupancy hazard classification needs to be returned. When located in 11.1, it presents no conflict to its application to storage since it is self evident that it applies only to the occupancy hazard approach..


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215 of 579 5/19/2014 1:50 PM

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216 of 579 5/19/2014 1:50 PM


12.9 Restrictions Unsprinklered Combustible Concealed Spaces .

12.9.1*

When using the density/area method or room design method, unless the requirements of 12.9.2 are metfor buildings having unsprinklered combustible concealed spaces as described in 8.15.1.2 and 8.15.6, the

minimum area of sprinkler operation for that portion of the building shall be 3000 ft2 (279 m2).

12.9.1.1

The design area of 3000 ft2 (279 m2) shall be applied only to the sprinkler system or portions of thesprinkler system that are adjacent to the qualifying combustible concealed space.

12.9.1.2

The term adjacent shall apply to any sprinkler system protecting a space above, below, or next to thequalifying concealed space except where a barrier with a fire resistance rating at least equivalent to thewater supply duration completely separates the concealed space from the sprinklered area.

12.9.2

The following unsprinklered combustible concealed spaces shall not require a minimum design area of

sprinkler operation of 3000 ft2 (279 m2):

(1) Noncombustible and limited-combustible concealed spaces with minimal combustible loading havingno access. The space shall be considered a concealed space even with small openings such as thoseused as return air for a plenum.

(2) Noncombustible and limited-combustible concealed spaces with limited access and not permittingoccupancy or storage of combustibles. The space shall be considered a concealed space even withsmall openings such as those used as return air for a plenum.


(4) Concealed spaces where rigid materials are used and the exposed surfaces have a flame spreadindex of 25 or less and the materials have been demonstrated to not propagate fire more than 10.5 ft(3.2 m) when tested in accordance with ASTM E 84, Standard Test Method for Surface BurningCharacteristics of Building Materials, or ANSI/UL 723, Standard for Test for Surface BurningCharacteristics of Building Materials, extended for an additional 20 minutes in the form in which theyare installed in the space.

(5) Concealed spaces in which the exposed materials are constructed entirely of fire retardant–treatedwood as defined by NFPA 703.

(6) Concealed spaces over isolated small compartments not exceeding 55 ft2 (5.1 m2) in area.

(7) Vertical pipe chases under 10 ft2 (0.93 m2), provided that in multifloor buildings the chases arefirestopped at each floor using materials equivalent to the floor construction. Such pipe chases shallcontain no sources of ignition, piping shall be noncombustible, and pipe penetrations at each floorshall be properly sealed.

(8) Exterior columns under 10 ft2 (0.93 m2) in area formed by studs or wood joists, supporting exteriorcanopies that are fully protected with a sprinkler system.


This is a simple clarification. The only topic addressed by this section is combustible concealed spaces and restriction is a rather ambiguous title. There were many parts to PI 13-114 and this issue was not addressed in the committee statement so don’t know if it was inadvertently overlooked.

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217 of 579 5/19/2014 1:50 PM




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218 of 579 5/19/2014 1:50 PM

Public Comment No. 90-NFPA 13-2014 [ Chapter 13 ]

Chapter 13 Protection of Miscellaneous and Low-Piled Storage

13.1 General.

13.1.1

This chapter shall apply to any of the following situations:

(1) Miscellaneous storage of Class I through Class IV commodities up to 12 ft (3.7 m) in height

(2) Miscellaneous storage of Group A plastics up to 12 ft (3.7 m) in height

(3) Miscellaneous storage of rubber tires up to 12 ft (3.7 m) in height

(4) Miscellaneous storage of rolled paper up to 12 ft (3.7 m) in height

(5) Storage of Class I through Class IV commodities up to 12 ft (3.7 m) in height as directed by 14.2.3.1and 16.2.1.2.1

(6) Storage of Group A plastics up to 5 ft (1.5 m) in height as directed by 15.2.1 and 17.2.1.1

13.1.2 Hose Connections.

Hose connections shall not be required for the protection of miscellaneous storage.

13.2 Design Basis.


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13.2.1


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The protection criteria shall be selected from Table 13.2.1 and Figure 13.2.1.

Table 13.2.1 Discharge Criteria for Miscellaneous Storage Up to 12 ft (3.7 m) in Height

CommodityType ofStorage

StorageHeight

MaximumCeilingHeight

DesignCurve

Figure13.2.1

Note

Inside Hose

TotalCombinedInside and

OutsideHose

Duration(minutes)

ft m ft m gpm L/min gpm L/min

Class I to Class IV

Class I Solid-piled,palletized,bin box,shelf,single-,double-,multiple-rowrack, andback-to-backshelfstorage

≤12 ≤3.7 — — OH10, 50,100

0, 189,379

250 946 90

Class II ≤10 ≤3.0 — — OH10, 50,100

0, 189,379

250 946 90

Class II>10to≤12

>3.0to

≤3.7— — OH2

0, 50,100

0, 189,379

250 946 90

Class III ≤12 ≤3.7 — — OH20, 50,100

0, 189,379

250 946 90

Class IV ≤10 ≤3.0 — — OH20, 50,100

0, 189,379

250 946 90

Class IV

Palletized,bin box,shelf, andsolid-piled

>10to≤12

>3.0to

≤3.732 9.8 OH2

0, 50,100

0, 189,379

250 946 90

Single-,double-,multiple-rowrack andback-to-backshelfstorage

>10to≤12

>3.0to

≤3.732 9.8 EH1

0, 50,100

0, 189,379

500 1893 120

Group A Plastic Storage

CartonedUnexpanded

andexpanded

Solid-piled,palletized,bin box,shelf,single-,double-,multiple-rowrack, andback-to-backshelfstorage

≤5 ≤1.5 — — OH20, 50,100

0, 189,379

250 946 90

>5to≤10

>1.5to

≤3.015 4.6 EH1

0, 50,100

0, 189,379

500 1893 120

>5to≤10

>1.5to

≤3.020 6.1 EH2

0, 50,100

0, 189,379

500 1893 120

>10to≤12

>3.0to

≤3.717 5.2 EH2

0, 50,100

0, 189,379

500 1893 120

Solid-piled,palletized,bin box,shelf, andback-to-backshelfstorage

>10to≤12

>3.0to

≤3.732 9.8 EH2

0, 50,100

0, 189,379

500 1893 120

Single-,double-,multiple-rowrack

>10to≤12

>3.0to

≤3.732 9.8 OH2


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+

1 level ofin-rack

0, 50, 100 0, 189, 379 250 946 90

Exposed

Unexpandedand expanded

Solid-piled, palletized,bin box, shelf, single-,double-, multiple-rowrack, and back-to-backshelf storage

≤5 ≤1.5 — — OH20,

50,100

0,189,379

250 946 90

Solid-piled, palletized,bin box, shelf, andback-to-back shelfstorage

>5to≤8

>1.5to

≤2.428 8.5 EH2

0,50,100

0,189,379

500 1893 120


>5to≤10

>1.5to

≤3.015 4.6 EH2

0,50,100

0,189,379

500 1893 120

Unexpanded


>5to≤10

>1.5to

≤3.020 6.1 EH2

0,50,100

0,189,379

500 1893 120

ExpandedSingle-, double-,multiple-row rack

>5to≤10

>1.5to

≤3.020 6.1 OH2

+

1 level of in-rack 0, 50, 1000,

189,379

250 946 90

Unexpandedand expanded

Solid-piled, palletized, binbox, shelf, and back-to-backshelf storage

>10to≤12

>3.0to

≤3.717 5.2 EH2

0,50,100

0,189,379

500 1893 120

Single-, double-,multiple-row rack

>10to≤12

>3.0to

≤3.717 5.2 EH2

0,50,100

0,189,379

500 1893 120

>10to≤12

>3.0to

≤3.732 9.8 OH2

+

1 level ofin-rack

0, 50,100

0, 189, 379 250 946 90

Tire Storage

Tires

On floor, on side>5 to≤12

>1.5 to≤3.7

32 9.8 EH10, 50,100

0,189,379

500 1893 120

On floor, on tread, or onside

≤5 ≤1.5 — — OH20, 50,100

0,189,379

250 946 90

Single-, double-, ormultiple-row racks on treador on side

≤5 ≤1.5 — — OH20, 50,100

0,189,379

250 946 90

Single-row rack, portable,on tread or on side

>5 to≤12

>1.5 to≤3.7

32 9.8 EH10, 50,100

0,189,379

500 1893 120


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Single-row rack, fixed, ontread or on side

>5 to≤12

>1.5 to≤3.7

32 9.8 EH10, 50,100

0,189,379

500 1893 120

>5 to≤12

>1.5 to≤3.7

32 9.8 OH2

+

1 level of in-rack 0, 50, 1000, 189,

379250 946 90

Rolled Paper Storage

Heavyweight andmediumweight

On end ≤10 ≤3.0 30 9.1 OH20, 50,100

0, 189,379

250 946 90

Tissue and lightweight On end ≤10 ≤3.0 30 9.1 EH10, 50,100

0, 189,379

250 946 120

Figure 13.2.1 Miscellaneous Storage Up to 12 ft (3.7 m) in Height — Design Curves (see Table13.2.1).

13.2.2

Installation criteria as permitted by NFPA 13 and design criteria and modifiers as permitted by thedensity/area method of Chapter 11 for ordinary hazard Group 1, ordinary hazard Group 2, extra hazardGroup 1, and extra hazard Group 2 occupancies shall be applicable.

13.2.3

Where K-11.2 (160) or larger sprinklers are used with EH1 or EH2 design curves from Figure 13.2.1, the

design area shall be permitted to be reduced by 25 percent but not below 2000 ft2 (186 m2), regardless oftemperature rating.

13.3 In-Rack Sprinklers.

13.3.1 General.

In-rack sprinklers required by Table 13.2.1 shall meet the requirements of this section and the applicablestorage protection and arrangement sections of this chapter.

13.3.2 Discharge Criteria.

In-rack sprinklers shall have a K-factor of 5.6 (80) or larger and operate at a minimum of 15 psi (1 bar).

13.3.3 Water Demand.

Where one level of in-rack sprinklers is installed for miscellaneous storage, water demand shall be basedon simultaneous operation of the hydraulically most demanding four adjacent sprinklers.

13.3.4 In-Rack Sprinkler Locations.

13.3.4.1

In-rack sprinklers for miscellaneous storage shall be located at the first tier level at or above one-half of thestorage height.


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13.3.4.2

Maximum horizontal spacing of in-rack sprinklers in single- or double-row racks with Class Ithrough IVcommodities, Group A plastics, tires, and rolled paper shall be in accordance with Table 13.3.4.2.

Table 13.3.4.2 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored in Single- orDouble-Row Racks Up to 12 ft (3.7 m) in Height

Commodity Class

Aisle Widths I and II III IV Group A Plastics, Tires and Rolled Paper

Encapsulated ft m ft m ft m ft m ft m

No 8 2.4 12 3.7 12 3.7 10 3.0 8 2.4

No 4 1.2 12 3.7 10 3.0 10 3.0 8 2.4

Yes — — 8 2.4 8 2.4 8 2.4 8 2.4

13.3.4.3

In-rack sprinklers shall be located in the longitudinal flue at the intersection of the transverse flues while notexceeding the maximum spacing rules.

13.3.4.3.1

If no longitudinal flue is provided in single- and double-row racks, in-rack sprinklers shall be located within12 in. (300 mm) of the center of the rack while not exceeding the maximum spacing.

13.3.4.4

Where distances between transverse flues exceed the maximum allowable distances, sprinklers shall beinstalled at the intersection of the transverse and longitudinal flues and additional sprinklers shall beinstalled between transverse flues to meet the maximum distance rules.

13.3.4.5



Correlates with the chapter titles for 14, 15, 16, 17, 18, & 19

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First Revision No. 316-NFPA 13-2013 [Chapter 13 [Title Only]]




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224 of 579 5/19/2014 1:50 PM


13.3.4.2

Maximum horizontal spacing of in-rack sprinklers in single- or double-row racks with Class Ithrough IVcommodities, Group A plastics, tires, and rolled paper shall be in accordance with Table 13.3.4.2 .

Table 13.3.4.2 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored in Single- orDouble-Row Racks Up to 12 ft (3.7 m) in Height

Commodity Class Aisle Widths I and II III IV Group A Plastics, Tires and RolledPaper Encapsulated ft m ft m ft m ft m ft m No 8 2.4 12 3.7 12 3.7 10 3.0 8 2.4 No 4 1.2 12 3.7 10 3.0 10 3.0 8 2.4 Yes— — 8 2.4 8 2.4 8 2.4 8 2.4

shall not exceed 8 ft (2.4 m).


The inclusion of criteria for the installation of in-rack sprinklers for protection of Class I, II, III, and IV Commodities and Rolled Paper is confusing to the user of hte standard when there is no requirement under Table 13.2.1 for in-rack sprinklers with these products. The installation of in-rack sprinklers with miscellaneous storage is only required for certain Group A plastic and tire arrangements.

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Submitter Full Name: Tracey Bellamy

Organization: Telgian Corporation

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Submittal Date: Mon May 12 23:05:26 EDT 2014


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Chapter 14 Protection for Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage of Class Ithrough Class IV Commodities


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14.1 General.

14.1.1

This chapter shall apply to palletized, solid-piled, bin box, shelf, or back-to-back shelf storage for a broadrange of combustibles.

14. 1. 2

The requirements of Chapter 12 shall apply unless modified by this chapter.

14.2 * Control Mode Density/Area Sprinkler Protection Criteria for Palletized, Solid-Piled, Bin Box,Shelf, or Back-to-Back Shelf Storage of Class I Through Class IV Commodities.

14.2.1

Protection for Class I through Class IV commodities in the following configurations shall be provided inaccordance with this section:

(1) Nonencapsulated commodities that are solid-piled, palletized, or bin box storage up to 30 ft (9.1 m) inheight

(2) Nonencapsulated commodities on shelf storage up to 15 ft (4.6 m) in height

(3)

(4) Back-to-back shelf storage up to 15 ft (4.6 m) in height

(5) Encapsulated storage of solid-piled and palletized Class I through IV commodities permitted inaccordance with 14.2.5 for storage heights over 15 ft (4.6 m) up to and including 20 ft (6.1 m)

14.2.

14.2. 2

The area and density for the hydraulically remote area and the water supply shall be determined asspecified in

3

for storage up to and including 12 ft (3.7 m) and 14.2.4 for storage over 12 ft (3.7 m).

14.2.3 Protection Criteria for Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage ofClass I Through Class IV Commodities Stored Up to 12 ft (3.7 m) in Height.

14.2.3.1

The protection criteria for storage up to and including 12 ft (3.7 m) shall be the same as for miscellaneousstorage selected from Chapter 13.

14.2. 3.2

The protection criteria in Chapter 13 shall be acceptable for storage of Class I to Class IV commodities upto and including 12 ft (3.7 m) in height (see Table 13.2.1 ).

14.2. 4 Protection Criteria for Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage ofClass I Through Class IV Commodities Stored Over 12 ft (3.7 m) in Height.

14.2.4.1

Where using ordinary temperature–rated sprinklers, a single point shall be selected from the appropriatecommodity curve on Figure 14.2.4.1.

Figure 14.2.4.1 Sprinkler System Design Curves for 20 ft

(6.1 m) High Storage — Ordinary Temperature–Rated Sprinklers.

* Encapsulated commodities that are solid-piled, palletized, bin box, or shelf storage up to 15 ft (4.6m) in height


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14.2.4.2

Where using high temperature–rated sprinklers, a single point shall be selected from the appropriatecommodity curve on Figure 14.2.4.2.

Figure 14.2.4.2 Sprinkler System Design Curves for 20 ft

(6.1 m) High Storage — High Temperature–Rated Sprinklers.

14.2.4.3

The densities selected in accordance with 14.2.4.1 or 14.2.4.2 shall be modified in accordance withFigure 14.2.4.3 without revising the design area.

Figure 14.2.4.3 Ceiling Sprinkler Density vs. Storage Height.

14.2.4.4

In the case of metal bin boxes with face areas not exceeding 16 ft2 (1.5 m2) and metal closed shelves with

face areas not exceeding 16 ft2 (1.5 m2), the area of application shall be permitted to be reduced by 33percent, provided the minimum requirements of 14.2.4.5 and 14.2.4.6 are met.

14.2.4.5

For storage greater than 12 ft (3.7 m), the The design density shall not be less than 0.15 gpm/ft2 (6.1

mm/min), and the design area shall not be less than 2000 ft2 (186 m2) for wet systems or 2600 ft2 (242

m2) for dry systems for any commodity, class, or group.

14.2.4.6

For storage greater than 12 ft (3.7 m), the The sprinkler design density for any given area of operation fora Class III or Class IV commodity, calculated in accordance with 14.2.4, shall not be less than the densityfor the corresponding area of operation for ordinary hazard Group 2.


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14.2.4.7

For back-to-back shelf storage, the design density shall be taken from Figure 14.2.4.1 for storage greaterthan 12 ft (3.7 m) and up to 15 ft (4.6 m) with no reduction for design density referenced in Figure 14.2.4.3.

14.2.5 Encapsulated Storage Over 15 ft (4.6 m) in Height Up to and Including 20 ft (6.1 m) in Height.

14.2.5.1

Encapsulated storage over 15 ft (4.6 m) in height up to and including 20 ft (6.1 m) in height Storage shallbe limited to solid-piled and palletized storage.

14.2.5.2

Encapsulated storage over 15 ft (4.6 m) in height up to and including 20 ft (6.1 m) in height Storage shallbe protected by sprinklers with a K-factor of 11.2 (160) or larger.

14.2.5.3

Encapsulated storage over 15 ft (4.6 m) in height up to and including 20 ft (6.1 m) in height of Class I

commodity shall be protected with a density/area of at least 0.46 gpm/ft2 over 2000 ft2 (18.7 mm/min over

186 m2).

14.2.5.4

Encapsulated storage over 15 ft (4.6 m) in height up to and including 20 ft (6.1 m) in height of Class II

commodity shall be protected with a density/area of at least 0.53 gpm/ft2 over 2000 ft2 (21.7 mm/min over

186 m2).

14.2.5.5

Encapsulated storage over 15 ft (4.6 m) in height up to and including 20 ft (6.1 m) in height of Class III and

Class IV commodity shall be protected with a density/area of at least 0.6 gpm/ft2 over 2000 ft2 (24.5

mm/min over 186 m2).

14.3 CMSA Sprinklers for Palletized or Solid-Piled Storage of Class I Through Class IV Commodities.


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14.3.1


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Protection of palletized and solid-piled storage of Class I through Class IV commodities shall be inaccordance with Table 14.3.1.

Table 14.3.1 CMSA Sprinkler Design Criteria for Palletized and Solid-Piled Storage of Class I ThroughClass IV Commodities (Encapsulated and Nonencapsulated)

ConfigurationCommodity

Class


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Numberof Design

Sprinklers


ft m ft m psi bar

Palletized Class I or II

25 7.6

30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

35 10.6

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

30 9.1 35 10.619.6 (280)Pendent

Wet 15 25 1.7

35 10.6 40 12.119.6 (280)Pendent

Wet 15 30 2.1

Class III

25 7.6

30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

35 10.6

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

30 9.1 35 10.619.6 (280)Pendent

Wet 15 25 1.7

35 10.6 40 12.119.6 (280)Pendent

Wet 15 30 2.1

Class IV

20 6.1 30 9.1

11.2 (160)Upright Wet

20 25 1.7

15 50 3.5

16.8 (240)Upright

Wet20 15 1.0

15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1


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ConfigurationCommodity

Class


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Numberof Design

Sprinklers


ft m ft m psi bar

30 9.1 35 10.619.6 (280)Pendent

Wet 15 25 1.7

35 10.6 40 12.119.6 (280)Pendent

Wet 15 30 2.1

Solid piled Class I or II

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

16.8 (240)Upright

Wet 15 10 0.7

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1 35 10.619.6 (280)Pendent

Wet 15 25 1.7

35 10.6 40 12.119.6 (280)Pendent

Wet 15 30 2.1

Class III

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1 35 10.619.6 (280)Pendent

Wet 15 25 1.7

35 10.6 40 12.119.6 (280)Pendent

Wet 15 30 2.1

Class IV

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 50 3.5

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1 35 10.619.6 (280)Pendent

Wet 15 25 1.7

35 10.6 40 12.119.6 (280)Pendent

Wet 15 30 2.1


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14.3.2

Protection shall be provided as specified in Table 14.3.1 or appropriate NFPA standards in terms ofminimum operating pressure and the number of sprinklers to be included in the design area.

14.3.3 Open Wood Joist Construction.

14.3.3.1

Where CMSA sprinklers are installed under open wood joist construction, their minimum operatingpressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8 (240)sprinkler.

14.3.3.2

For CMSA sprinklers, where Where each joist channel of open wood joist construction is fully firestoppedto its full depth at intervals not exceeding 20 ft (6.1 m), the lower pressures specified in Table 14.3.1 shallbe permitted to be used.

14.3.4

Hose stream allowance and water supply duration requirements shall be in accordance with Table 14.3.1.

14.3.5 Preaction Systems.

14.3.5.1

For the purpose of using Table 14.3.1, preaction systems shall be classified as dry pipe systems.

14

.

3.6

Building steel shall not require special protection where Table

14.

3.1 are applied as appropriate for the storage configuration.

14. 4 Early Suppression Fast-Response (ESFR) Sprinklers for Palletized or Solid-Piled Storage of ClassI Through Class IV Commodities.


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14.4.1


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Table 14.4.1 ESFR Protection of Palletized and Solid-Piled Storage of Class I Through Class IVCommodities

Commodity


MaximumCeiling/Roof

HeightNominalK-Factor

Orientation


ft m ft m psi bar

Class I, II, III, or IV,encapsulated andnonencapsulated (noopen-top containers)

20 6.1 25 7.6

14.0

(200)

Upright/

pendent50 3.4

16.8

(240)

Upright/

pendent35 2.4

22.4

(320)Pendent 25 1.7

25.2

(360)Pendent 15 1.0

25 7.6

30 9.1

14.0

(200)

Upright/

pendent50 3.4

16.8

(240)

Upright/

pendent35 2.4

22.4

(320)Upright/pendent 25 1.7

25.2


32 9.8

14.0

(200)

Upright/

pendent60 4.1

16.8


30 9.1 35 10.7

14.0

(200)

Upright/

pendent75 5.2

16.8

(240)

Upright/

pendent52 3.6

22.4

(320)Pendent 35 2.4

25.2

(360)Pendent 20 1.4

35 10.7 40 12.2

16.8

(240)Pendent 52 3.6

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 25 1.7

35 10.7 45 13.722.4

(320)Pendent 40 2.8


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Commodity


MaximumCeiling/Roof


Orientation


ft m ft m psi bar

25.2

(360)Pendent 40 2.8

40 12.2 45 13.7

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 40 2.8

14.4.2

ESFR sprinkler systems shall be designed such that the minimum operating pressure is not less than thatindicated in Table 14.4.1 for commodity, storage height, and building height involved.

14.4.3

The design area shall consist of the most hydraulically demanding area of 12 sprinklers, consisting of foursprinklers on each of three branch lines.

14.5 Special Design for Palletized, Solid-Piled, Bin Box, or Shelf Storage of Class I Through Class IVCommodities.

14.5.1 Bin Box and Shelf Storage.

14.5.1.1

Bin box and shelf storage Storage that is over 12 ft (3.7 m) but not in excess of the height limits of 14.2.1and that is provided with walkways at vertical intervals of not over 12 ft (3.7 m) shall be protected withautomatic sprinklers under the walkway(s).

14.5.1.2

Protection shall be as follows:

(1) Ceiling design density shall be based on the total height of storage within the building.

(2) Automatic sprinklers under walkways shall be designed to maintain a minimum discharge pressure of15 psi (1 bar) for the most hydraulically demanding six sprinklers on each level. Walkway sprinklerdemand shall not be required to be added to the ceiling sprinkler demand. Sprinklers underwalkways shall not be spaced more than 8 ft (2.4 m) apart horizontally.

14.6 High-Expansion Foam — Reduction to Ceiling Density.

A reduction in ceiling density to one-half that required for Class I through Class IV commodities, idlepallets, or plastics shall be permitted without revising the design area, but the density shall be no less than

0.15 gpm/ft2 (6.1 mm/min).


Submitted on behalf of the SSD Redundancy Task Group. Location has meaning and context information from the Chapter Title and Section Headings does not need to be repeated throughout the Chapter. Chapter 14 is only for protection of Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage of Class Ithrough Class IV Commodities. There is no need to reference the storage type or commodity unless the section only applies to a subset. The same is true for the type of sprinkler. As an example section 14.3 applies to CMSA sprinklers and there is no need to repeat "CSMA" in each subsection.



Public Comment No. 261-NFPA 13-2014 [Global Input] Both apply to redundant and duplicated text.

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Public Comment No. 246-NFPA 13-2014 [ New Section after 14.1.2 ]

14.1.3 Protection criteria for Group A plastics shall be permitted for the protection of the samestorage height and configuration of Class I, II, III, and IV commodities.


Contary to the Committee Statement for resolution of PI No. 94 the inclusion of the proposed section is needed since under the provisions of 14.2.5 for encapsualted storage can exceed that requried for Group A plastics storage as allowed in Chapter 16.

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14.4.1


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Table 14.4.1 ESFR Protection of Palletized and Solid-Piled Storage of Class I Through Class IVCommodities

Commodity


MaximumCeiling/Roof


Orientation


ft m ft m psi bar

Class I, II, III, or IV,encapsulated andnonencapsulated (noopen-top containers)

20 6.1 25 7.6

14.0

(200)

Upright/

pendent50 3.4

16.8

(240)

Upright/

pendent35 2.4

22.4

(320)Pendent 25 1.7

25.2

(360)Pendent 15 1.0

25 7.6

30 9.1

14.0

(200)

Upright/

pendent50 3.4

16.8

(240)

Upright/

pendent35 2.4

22.4


25.2


32 9.8

14.0

(200)

Upright/

pendent60 4.1

16.8


30 9.1 35 10.7

14.0

(200)

Upright/

pendent75 5.2

16.8

(240)

Upright/

pendent52 3.6

22.4

(320)Pendent 35 2.4

25.2

(360)Pendent 20 1.4

35 10.7 40 12.2

16.8

(240)Pendent 52 3.6

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 25 1.7

35 10.7 45 13.7

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 40 2.8


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Commodity


MaximumCeiling/Roof


Orientation


ft m ft m psi bar

40 12.2 45 13.7

22.4

(320)Pendent 40 2.8

25.2

(360)Pendent 40 2.8


CC NOTE: The following CC Note No. 10 appeared in the First Draft Report as First Revision No. 298, and is also related to Public Input No. 574 and 575.

The TC should review the modifications to the table for the “upright orientation” for K 25.2, K22.4 and K 16.8 sprinklers at 32 ft ceiling height. These should not have been included.

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242 of 579 5/19/2014 1:50 PM


15.1.2 Protection criteria for Group A plastics shall be permitted for the protection of the samestorage height and configuration of Class I, II, III, and IV commodities.


Contary to the Committee Statement for resolution of PI No. 94 the inclusion of the proposed section is needed since under the provisions of 14.2.5 for encapsualted storage can exceed that requried for Group A plastics storage as allowed in Chapter 16.



Public Comment No. 246-NFPA 13-2014 [New Section after 14.1.2]

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15.2* Control Mode Density/Area Sprinkler Protection Criteria for Palletized, Solid-Piled, Bin Box, Shelf,or Back-to-Back Shelf Storage of Plastic and Rubber Commodities.

15.2.1 Storage Less than 5 ft (1.5 m) in Height

For the storage of Group A plastics stored 5 ft (1.5 m) or less in height, the sprinkler design criteria formiscellaneous storage specified in Chapter 13 shall be used. The protection criteria in Chapter 13 shall beacceptable for storage of Group A plastic commodities up to and including 5 ft (1.5 m) in height. (See Table13.2.1 for specific Group A plastic storage height protection criteria.)

15.2.2* Storage Over 5 ft (1.5 m) in Height

15.2.2.1 Protection for plastic and rubber commodities shall be in accordance with Section 15.2. Thedecision tree shown in Figure 15.2.2.1 shall be used to determine the protection in each specific situation,subject to the following limitations:



(3) Commodities that are stored using back-to-back shelf storage up to 15 ft (4.6 m) in height. Theminimum aisle width shall be 60 in. (1524 mm). The design criteria shall be in accordance with Table15.2.2. 1 . The back-to-back shelf shall have a full height solid vertical transverse barrier of 3⁄8 in. (9.5mm) plywood or particleboard, 22 gauge sheet metal, or equivalent, from face of aisle to face of aisle,spaced at a maximum 45 ft (13.7 m) interval. The transverse barrier shall be permitted to terminate atthe longitudinal barrier.

Table 15 Table 15 .2.2 Back 2.1 Back -to-Back Shelf Storage of Cartoned Unexpanded Group A Plastics


ft m ft m


Up to 12 3.7 Up to 15 4.6 0.45 gpm/ft 2 over 2500 ft 2 18.3 mm/min/232 m 2



Figure 15 Figure 15 .2.2 Decision 2.1 Decision Tree.

15.2.3 2.2 *

Factors affecting protection requirements such as closed/open array, clearance to ceiling, andstable/unstable piles shall be applicable only to storage of Group A plastics. This decision tree also shall beused to determine protection for commodities that are not wholly Group A plastics but contain suchquantities and arrangements of the same that they are deemed more hazardous than Class IVcommodities.

15.2.4 2.3

Group B plastics and free-flowing Group A plastics shall be protected in the same manner as a Class IVcommodity. (See Chapter 14 for protection of these storage commodities with spray sprinklers.)


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15.2.5 2.4

Group C plastics shall be protected in the same manner as a Class III commodity. (See Chapter 14 forprotection of these storage commodities with spray sprinklers.)


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15.2.6 2.5 *


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Design areas and densities for the appropriate storage configuration shall be selected from Table15.2.6 2.5 (a) or Table 15.2.6 2.5 (b) as appropriate.

Table 15 Table 15 .2.6 2.5 (a) Design Design Densities for Palletized, Solid-Piled, Bin Box, or ShelfStorage of Group A Plastic Commodities (U.S. Customary Units)


(ft)Roof/Ceiling Height (ft)

Density (gpm/ft 2 )

A B C D E

>5 to ≤12

Up to 15 0.2 EH2 0.3 EH1 EH2

>15 to 20 0.3 0.6 0.5 EH2 EH2

>20 to 32 0.4 0.8 0.6 0.45 0.7

15

Up to 20 0.3 0.6 0.5 0.4 0.45

>20 to 25 0.4 0.8 0.6 0.45 0.7

>25 to 35 0.45 0.9 0.7 0.55 0.85

20

Up to 25 0.4 0.8 0.6 0.45 0.7

>25 to 30 0.45 0.9 0.7 0.55 0.85

>30 to 35 0.6 1.2 0.85 0.7 1.1

25Up to 30 0.45 0.9 0.7 0.55 0.85

>30 to 35 0.6 1.2 0.85 0.7 1.1

Notes:

(1) Minimum clearance between sprinkler deflector and top of storage shall be maintained as required.













Table 15 Table 15 .2.6 2.5 (b) Design Design Densities for Palletized, Solid-Piled, Bin Box, or ShelfStorage of Group A Plastic Commodities (S.I. Units)


(m)

Roof/Ceiling Height

(m)

Density

(mm/min)

A B C D E

Up to 4.6 8.2 EH2 12.2 EH1 EH2

>1.5 to ≤3.6 >4.6 to 6.1 12.2 24.4 20.4 EH2 EH2

>6.1 to 9.8 16.3 32.6 24.4 18.3 28.5

Up to 6.1 12.2 24.4 20.4 16.3 18.3

4.6 >6.1 to 7.6 16.3 32.6 24.4 18.3 28.5

>7.6 to 10.7 18.3 36.7 28.5 22.4 34.6

Up to 7.6 16.3 32.6 24.4 18.3 28.5


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(m)

Roof/Ceiling Height

(m)

Density

(mm/min)

A B C D E

6.1 >7.6 to 9.1 18.3 36.7 28.5 22.4 34.6

>9.1 to 10.7 24.4 49.0 34.6 28.5 44.8

7.6Up to 9.1 18.3 36.7 28.5 22.4 34.6

>9.1 to 10.7 24.4 49.0 34.6 28.5 44.8

Notes:

(1) Minimum clearance between sprinkler deflector and top of storage shall be maintained as required.













15.2.7 2.6

The ceiling-only protection criteria specified in Chapter 17 for rack storage of Group A plastic commoditiesshall be permitted to be used for solid-piled and palletized storage of the same commodity at the sameheight and clearance to ceiling.

15.2.8 2.7 *

For Table 15.2.6 2.5 (a) and Table 15.2.6 2.5 (b) , the design areas shall be as follows:

(1) The area shall be a minimum of 2500 ft2 (232 m2).

(2) Where Table 15.2.6 2.5 (a) and Table 15.2.6 2.5 (b) allow densities and areas to be selected inaccordance with Curve EH1 and Curve EH2 of Figure 13.2.1, any density/area from the curves inFigure 13.2.1 shall be permitted. When selecting a point from the EH1 or EH2 density/area curves ofFigure 13.2.1, the following area reductions shall be permitted:

(a) For K-8.0 (115) sprinklers used with Curve EH1, the design area shall be permitted to be reduced

by 25 percent, but not below 2000 ft2 (186 m2), where high temperature sprinklers are used.

(b) For K-11.2 (160) or larger sprinklers, the design area shall be permitted to be reduced by 25

percent, but not below 2000 ft2 (186 m2), regardless of temperature rating.

(3) For closed arrays, the area shall be permitted to be reduced to 2000 ft2 (186 m2).

15.2.9 2.8 *

Interpolation of densities between storage heights shall be permitted.

15.2.9 2 .8. 1

Densities shall be based on the 2500 ft2 (232 m2) design area.

15.2.9 2 .8. 2

Interpolation of ceiling/roof heights shall not be permitted.


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15.2.10 2.9

For storage of Group A plastics between 5 ft (1.5 m) and 12 ft (3.7 m) in height, the installationrequirements for extra hazard systems shall apply.


Arguable this is not a significant issue but is added as an extension of the reformatting effort of ch 17. There is value in emphasizing impact of the 5 ft storage height. As for the renumbering, each digit has meaning and shows the grouping of the criteria. Everything from the old 15.2.3 through 15.2.10 applies to storage over 5 ft. This attention to the numbers correlates with that of ch 14 and 16 (section 14.2.4 is a good example). The smaller amount of criteria in ch 15 as allowed us to be casual about the numbering process without significant confusion but is not a reason to continue the practice. This is especially true with the current focus on the structure/redundancy and format of multiple chapters.

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15.2.2 *

Protection for plastic and rubber commodities shall be in accordance with Section 15.2 . The decision treeshown in Figure 15.2.2 shall be used to determine the protection in each specific situation .

15.2.2.1 For the storage of Group B and C plastics , the sprinkler design criteria specified in Chapter 14shall be used.

15.2.2.2 Protection for Group A plastic commodities shall be subject to the following limitations:



(3) Commodities that are stored using back-to-back shelf storage up to 15 ft (4.6 m) in height. Theminimum aisle width shall be 60 in. (1524 mm). The design criteria shall be in accordance with Table15.2.2. The back-to-back shelf shall have a full height solid vertical transverse barrier of 3⁄8 in. (9.5mm) plywood or particleboard, 22 gauge sheet metal, or equivalent, from face of aisle to face of aisle,spaced at a maximum 45 ft (13.7 m) interval. The transverse barrier shall be permitted to terminate atthe longitudinal barrier.

Table 15.2.2 Back-to-Back Shelf Storage of Cartoned Unexpanded Group A Plastics


ft m ft m





Figure 15.2.2 Decision Tree.



LGK_NFPA_13-2013_Comment_15-2-2.pdf PC Form


As Section 15.2.2 is currently written in the 2013 edition of NFPA 13 and in the First Draft Report, it appears as if all plastic and rubber commodities are subject to the limitations of Sentences 1 to 3. However, Class B plastics are equated to Class IV commodities and Class C plastics are considered to be Class III. Therefore, these products are subject to the limitations of Sentences 1 to 5 of Section 14.2.1. The limitations in 15.2.2 are really just for Group A materials, and this needs to be better documented.

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16.1.2.3 Scheme A Protection of CommoditiesThe protection of Class I, II, III, IV or Group A plastic commodities requiring a greater level ofprotection than is available from the overhead sprinkler system shall be permitted to be protectedin accordance with 16.1.2.3.1 through 16.1.2.3.9.

16.1.2.3.1 Where the storage rack will not be solely dedicated to the storage of commoditiesrequiring a greater level of protection that is available from the overhead sprinkler system theneither of the following shall apply: (1) extend the protection prescribed by 16.1.2.3 horizontally onepallet load in all directions beyond the commoditiy storage area requiring the higher level ofprotection, or (2) install a vertical barrier to segregate the commodities requiring the higher levelof protection from any adjacent commodities.

16.1.2.3.2 Commodities that can be protected by the ceiling-level sprinkler system shall bepermitted to be stored vertically above as well as horizontally adjacent to the portions of thestorage rack equipped prescribed by 16.1.2.3.

16.1.2.3.3 Horizontal BarriersHorizontal barriers shall be installed at every tier level of the dedicated storage rack where therack is equipped with solid shelves. Where the dedicated storage rack is open-frame, horizontalbarriers shall be installed at vertical increments not exceeding 12 ft (3.6 m). The barriers shallspan horizontally so that all flue spaces within the rack bay are covered. A maximum 3 in. (75 mm)wide gap shall be permitted at rack uprights.

16.1.2.3.3.1 The solid barrier shall be installed on a horizontal plane within a rack, beneath whichin-rack sprinklers shall be installed. The barrier shall be constructed of minimum 22 ga (0.7 mm)sheet metal or minimum 3/8 in. (10 mm) plywood. The barrier shall extend to both ends and bothaisle faces of the racks covering up both the longitudinal and transverse flue spaces of the rackbays in which they are installed. The barrier shall be fitted to within 3 in. (75 mm) of any verticalrack member or other equipment that would create an opening, such as vertical in-rack sprinklerpipe drops.

16.1.2.3.4 In-Rack SprinklersMinimum K8.0 (K115), quick-response sprinklers (ceiling-level or in-rack) shall be installedbeneath each horizontal barrier. The deflector of the sprinkler shall be located as close to theunderside of the horizontal barrier as possible.

16.1.2.3.4.1 For single-row racks, sprinklers shall be installed at each rack upright as well as ateach rack mid-bay as shown in Figure 16.1.2.3.4.1. The maximum linear spacing betweensprinklers shall not exceed 5 ft (1.5 m).

16.1.2.3.4.2 For double-row racks, sprinklers shall be installed at each rack upright within thelongitudinal flue space as well as at the face of the rack and at the mid-bay face of each rack bayas shown in Figure 16.1.2.3.4.2. The maximum linear spacing between sprinklers shall not exceed5 ft (1.5 m) at the rack face and 10 ft (3.0 m) within the longitudinal flue space.

16.1.2.3.4.3 For multiple-row racks, an alternating sprinkler arrangement shall be installed withinadjacent transverse flue spaces as shown in Figure 16.1.2.3.4.3 with sprinklers at the face of eachflue space. The maximum linear spacing between sprinklers at the face and each alternating bayshall not exceed 5 ft (1.5 m) and shall not exceed 10 ft (3.0 m) between sprinklers at every otherbay.

16.1.2.3.5 The design of the an in-rack sprinkler system shall be based on a minimum flow of 60gpm (230 L/min) from the most remote 6 sprinklers for single-row racks or the most remote 8sprinklers for both double-row and multiple-row racks.

16.1.2.3.6 A hose demand allowance of 500 gpm (1,900 L/min) shall be included in the hydraulicdesign.

16.1.2.3.7 The demand duration shall provide for a minimum of 2 hours.

16.1.2.3.8 The in-rack sprinkler demand shall not be required to be hydraulically balanced with theceiling-level sprinkler system..16.1.2.3.9 Ceiling Sprinkler SystemThe ceiling-level sprinkler system shall be designed based on the highest commodity hazard notprotected by the criteria prescribed by 16.1.2.3.


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NFPA_13_PI_Scheme_A_Figure_16.1.2.3.4.X.docx


The proposed Scheme A protection criteria was introduced during last cycle for certain solid shelf arrangements. This protection Scheme was originally developed and tested for protection of Class IIIB combustible liquids in plastic containers for NFPA 30 so as to allow of protection of pockets of such stored materials with the use of solid barriers and enhanced in-rack sprinkler arrays that provided a direct application of water within the storage array. Test references to support such criteria for Class IIIB liquids is provided by NFPA 30, Table D.2(e) 1 as P-21 to P-31 from the Directory of Fire Tests Involving Storage of Flammable and Combustible Liquids in Containers, 3rd edition. The adequacy of such protection for the higher hazard Class IIIB combustible liquids provides justification for protection of Class I, II, III, IV Commodities or Group A plastics.

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Public Input No. 354-NFPA 13-2013 [New Section after 16.1.2.2]




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Figure 16.1.2.4.1

Figure 16.1.2.3.4.2

Figure 16.1.2.3.4.3


Reconsider the proposal and return the text of 16.1.4.1 to that of the 2013 edition of NFPA 13, asfollows:

16.1.4.1 *

Where fireproofing of building columns is not provided and storage heights are in excess of 15 ft (4.6 m),protection of building columns located wholly or partially within the rack footprint inclusive of flue spacesor within 12 in. (305 mm) of the footprint structure or vertical rack members supporting the building shallbe protected in accordance with one of the following:



(3) Provision of ceiling sprinkler density for a minimum of 2000 ft2 (186 m2) with ordinary 165°F (74°C) orhigh-temperature 286°F (141°C) rated sprinklers as shown in Table 16.1.4.1 for storage heightsabove 15 ft (4.6 m), up to and including 20 ft (6.1 m)




Aisle Width

4 ft (1.2 m) 8 ft (2.4 m)

gpm/ft 2 (L/min)/m 2 gpm/ft 2 (L/min)/m 2

Class I 0.37 15.1 0.33 13.5

Class II 0.44 17.9 0.37 15.1

Class III 0.49 20.0 0.42 17.1

Class IV 0.68 27.7 0.57 23.2





The proposed text, speaking of “a rack footprint …” should not be adopted. A formal Interpretation FI 75-4 was written to the 1975 edition of NFPA 231C which clarified that the requirement for column sprinklers is not applicable when columns are located adjacent to the racks, whether at the building walls or otherwise. This interpretation has never been overturned and there has been no field experience or test data brought forward to discredit its conclusion. Therefore, there is no justification for inserting this new “within 12 inches of the footprint” criteria. The existing text of “within the rack structure” should remain in effect – as it has for almost 40 years.

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16.1.6.7 Design criteria for CMDA, CMSA, and ESFR sprinklers shall be any applicable option for openracks combined with the in-rack sprinklers installed in accordance with 16.1.6.1 or 16.1.6.2.



There is a need for guidance on what system criteria to use when there are solid shelves. The 2010 edition said: 16.1.6.5 Design criteria for combined ceiling and in-rack sprinklers shall be used for the storage configurations in 16.1.6.1 and 16.1.6.2. This was deleted, inadvertently I believe, from the 2013 edition but only in chap. 16. Similar text exists in the 2013 ed. in 17.1.5.5. PI-13-83 attempted to reinsert it into ch 16 but was rejected with the statement that some tables do not provide combined options adding confusion to those requirement. This is certainly a concern, so this comment removed the reference to combined criteria. A separate comment also removed it from the current text in 17.1.5.5.

Due to the historical perspective that the General section on solid shelf racks applies only to spray sprinkler, identifying all sprinkler types corrects that misunderstanding. It also emphasizes that this section is indeed applicable to ESFR and CMSA system as already identified in 8.4.6.1.1. A new comment (PC-81) has been submitted to add it to 8.4.7.

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16.2 Protection Criteria for Open Rack for Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height.

16.2.1 Control Mode Density/Area Sprinkler Protection Criteria for Rack Storage of Class I Through ClassIV Commodities Stored Up to and Including 25 ft (7.6 m) in Height.

16.2.1.1

The area and density for the hydraulically remote area and the water supply shall be determined asspecified in 16.2.1.2 for storage up to 12 ft (3.7 m) and 16.2.1.3 to 16.2.1.3.5 for storage over 12 ft (3.7m).

16.2.1.2 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored Up to 12 ft(3.7 m) in Height.

16.2.1.2.1

The protection criteria for storage up to and including 12 ft (3.7 m) shall be the same as miscellaneousstorage from Chapter 13.

16.2.1.2.2

The protection criteria in Chapter 13 shall be acceptable for storage of Class I through Class IVcommodities up to and including 12 ft (3.7 m) in height. (See Table 13.2.1 for specific Class I through ClassIV storage height protection criteria.)

16.2.1.2.3

For storage 12 ft (3.7 m) or less in height that does not meet the definition of Miscellaneous Storage that ison solid shelf racks, in-rack sprinklers shall be provided in accordance with 16.1.6, and ceiling sprinklerprotection shall be provided in accordance with Chapter 13.

16.2.1.3 Protection Criteria for Rack Storage of Class I Through Class IV Commodities Stored Over 12 ft(3.7 m) in Height.


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16.2.1.3.1 *

Ceiling sprinkler water demand shall be determined in accordance with 16.2.1.3.2 for single- anddouble-row racks or 16.2.1.3.3 for multiple-row racks. (See Section C.14.)

16.2.1.3.2 *


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For single- or double-row racks for Class I, Class II, Class III, or Class IV commodities, encapsulated ornonencapsulated in single- or double-row racks, ceiling sprinkler water demand in terms of density

[gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) of ceiling or roof] shall be selected from thedensity/area curves of Figure 16.2.1.3.2(a) through Figure 16.2.1.3.2(g) that are appropriate for eachcommodity and configuration as shown in Table 16.2.1.3.2 and shall be modified as appropriate by16.2.1.3.4. These requirements shall apply to portable racks arranged in the same manner as single- ordouble-row racks.

Table 16.2.1.3.2 Single- or Double-Row Racks — Storage Height Over 12 ft (3.7 m) Up to and Including25 ft (7.6 m)

HeightCommodity

Class Encapsulated

SprinklersMandatory

In-Rack


Aisles* With In-Rack Sprinklers Without In-Rack S

ft m Figure Curves

ApplyFigure

16.2.1.3.4.1 Figure Curves

Over 12ft (3.7m) up toandincluding20 ft(6.1 m)

I

No4 1.2

No 16.2.1.3.2(a)C and D

Yes

16.2.1.3.2(a)F and H

8 2.4 A and B E and G

Yes4 1.2

No 16.2.1.3.2(e)C and D

16.2.1.3.2(e)G and H

8 2.4 A and B E and F

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.2.1.3.2(b)G and H


Yes4 1.2

No 16.2.1.3.2(e)C and D

16.2.1.3.2(e)G and H


III

No4 1.2

No 16.2.1.3.2(c)C and D

16.2.1.3.2(c)G and H


Yes4 1.2

1 level 16.2.1.3.2(f)C and D

— —8 2.4 A and B

IV

No4 1.2

No 16.2.1.3.2(d)C and D

16.2.1.3.2(d)G and H


Yes4 1.2

1 level 16.2.1.3.2(g)C and D

— —8 2.4 A and B


I

No4 1.2

No 16.2.1.3.2(a)C and D

No

16.2.1.3.2(a)F and H


Yes4 1.2

1 level 16.2.1.3.2(e)C and D

— —8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.2.1.3.2(b)G and H


Yes4 1.2

1 level 16.2.1.3.2(e)C and D

— —8 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.2.1.3.2(c)G and H


Yes4 1.2

1 level 16.2.1.3.2(f)C and D

— —8 2.4 A and B

IV No 4 1.2 No 16.2.1.3.2(d) C and D 16.2.1.3.2(d) G and H


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Yes4 1.2

1 level 16.2.1.3.2(g)C and D

— —8 2.4 A and B


I

No4 1.2

No 16.2.1.3.2(a)C and D

No

16.2.1.3.2(a)F and H


Yes4 1.2

1 level 16.2.1.3.2(e)C and D

— —8 2.4 A and B

II

No4 1.2

No 16.2.1.3.2(b)C and D

16.2.1.3.2(b)G and H


Yes4 1.2

1 level 16.2.1.3.2(e)C and D

— —8 2.4 A and B

III

No4 1.2

No 16.2.1.3.2(c)C and D

16.2.1.3.2(c)G and H


Yes4 1.2

1 level 16.2.1.3.2(f)C and D

— —8 2.4 A and B

IV

No4 1.2

1 level

16.2.1.3.2(d)C and D

— —8 2.4 A and B

Yes4 1.2

16.2.1.3.2(g)C and D

— —8 2.4 A and B

HeightCommodity

Class Encapsulated

SprinklersMandatory

In-Rack


Aisles* With In-Rack Sprinklers Without In-Rack S

ft m Figure Curves

ApplyFigure

16.2.1.3.4.1 Figure Curves

*See 16.2.1.3.2.1 for interpolation of aisle widths.

Figure 16.2.1.3.2(a) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class INonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(b) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IINonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(c) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — Class IIINonencapsulated Commodities — Conventional Pallets.


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Figure 16.2.1.3.2(d) Sprinkler System Design Curves — 20 ft (6.1 m) High Rack Storage — ClassIV Nonencapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(e) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — SprinklerSystem Design Curves — Class I and Class II Encapsulated Commodities — ConventionalPallets.

Figure 16.2.1.3.2(f) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — SprinklerSystem Design Curves — Class III Encapsulated Commodities — Conventional Pallets.

Figure 16.2.1.3.2(g) Single- or Double-Row Racks — 20 ft (6.1 m) High Rack Storage — SprinklerSystem Design Curves — Class IV Encapsulated Commodities — Conventional Pallets.

16.2.1.3.2.1 *

Design densities for single- and double-row racks shall be selected to correspond to aisle width. (SeeSection C.15.)

(A)

For aisle widths between 4 ft (1.2 m) and 8 ft (2.4 m), the rules for 4 ft (1.2 m) aisle width shall be used ordirect linear interpolation between the densities shall be permitted.

(B)

The density given for 8 ft (2.4 m) wide aisles shall be applied to aisles wider than 8 ft (2.4 m).

(C)

The density given for 4 ft (1.2 m) wide aisles shall be applied to aisles more narrow than 4 ft (1.2 m) downto 3 1⁄2 ft (1.07 m).

(D)

Where aisles are more narrow than 3 1⁄2 ft (1.07 m), racks shall be considered to be multiple-row racks.

16.2.1.3.3 Multiple-Row Racks — Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft (7.6 m).


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16.2.1.3.3.1 Multiple-Row Racks — Rack Depth Up to and Including 16 ft (4.9 m) with Aisles 8 ft (2.4 m)or Wider.

For Class I, Class II, Class III, or Class IV commodities, encapsulated or nonencapsulated, ceiling sprinkler

water demand in terms of density [gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) of ceiling orroof] shall be selected from the density/area curves of Figure 16.2.1.3.2(a) through Figure 16.2.1.3.2(d)that are appropriate for each commodity and configuration as shown in Table 16.2.1.3.3.1 and shall bemodified as appropriate by 16.2.1.3.4. The protection criteria shall apply to portable racks arranged in thesame manner as multiple-row racks.

Table 16.2.1.3.3.1 Multiple-Row Racks — Rack Depth Up to and Including 16 ft (4.9 m), Aisles 8 ft (2.4 m)or Wider and Storage Height Over 12 ft (3.7 m) Up to 25 ft (7.6 m)

HeightCommodity

Class

Encap-

sulated

SprinklersMandatory

In-Rack


With In-Rack Sprinklers Without In-Rack Sp


16.2.1.3.4.1

1.25 ×Density

Figure CurvesApFig

16.2.1


INo

No

16.2.1.3.2(a)

C and D

Yes

No 16.2.1.3.2(a) I and JYe

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a) I and J

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b) I and J Ye

Yes 16.2.1.3.2(b) Yes 16.2.1.3.2(b) I and J

IIINo No 16.2.1.3.2(c) No 16.2.1.3.2(c) I and J Ye

Yes 1 level 16.2.1.3.2(c) Yes NA N

IV

No No 16.2.1.3.2(d) No 16.2.1.3.2(d) C and D N

Yes 1 level 16.2.1.3.2(d) A and B1.50 ×density

NA N


INo

No

16.2.1.3.2(a)

C and D

Yes

No 16.2.1.3.2(a) I and JYe

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a) I and J

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b) I and J

YeYes 16.2.1.3.2(b) Yes 16.2.1.3.2(b) I and J

IIINo No 16.2.1.3.2(c) No 16.2.1.3.2(c) I and J Ye


NA NA NIV

No

1 level

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) A nd B1.50 ×density


INo No 16.2.1.3.2(a)

C and D

No

No 16.2.1.3.2(a) I and J Ye

Yes 1 level 16.2.1.3.2(a) Yes

NA NA N

IINo

1 level

16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No

2 levels

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d) A and B1.50 ×density

NA: Not applicable.


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16.2.1.3.3.2 Multiple-Row Racks — Rack Depth Over 16 ft (4.9 m) or Aisles More Narrow Than 8 ft (2.4m).

For Class I, Class II, Class III, or Class IV commodities, encapsulated or nonencapsulated, ceiling sprinkler

water demand in terms of density [gpm/ft2 (mm/min)] and area of sprinkler operation [ft2 (m2) of ceiling orroof] shall be selected from the density/area curves of Figure 16.2.1.3.2(a) through Figure 16.2.1.3.2(g)that are appropriate for each commodity and configuration as shown in Table 16.2.1.3.3.2 and shall bemodified as appropriate by 16.2.1.3.4. The protection criteria shall apply to portable racks arranged in thesame manner as multiple-row racks.

Table 16.2.1.3.3.2 Multiple-Row Racks — Rack Depth Over 16 ft (4.9 m) or Aisles Narrower Than 8 ft (2.4m), Storage Height Over 12 ft (3.7 m) Up to and Including 25 ft (7.6 m)

HeightCommodity

Class

Encap-

sulated

SprinklersMandatory

In-Rack


With In-Rack Sprinklers Without In-Rack Sp


16.2.1.3.4.1

1.25 ×Density

Figure CurvesApFig

16.2.1


INo

No

16.2.1.3.2(a)

C and D Yes

No 16.2.1.3.2(a) I and JYe

Yes 16.2.1.3.2(a) Yes 16.2.1.3.2(a) I and J

IINo 16.2.1.3.2(b) No 16.2.1.3.2(b) I and J

YeYes 16.2.1.3.2(b) Yes 16.2.1.3.2(b) I and J

IIINo 16.2.1.3.2(c) No 16.2.1.3.2(c) I and J Ye


IV

No No 16.2.1.3.2(d) No 16.2.1.3.2(d) C and D N

Yes 1 level 16.2.1.3.2(d)1.50 ×

density


INo

1 level

16.2.1.3.2(a)

C and D Yes

No

NA NA N

Yes 16.2.1.3.2(a) Yes

IINo 16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No 16.2.1.3.2(d) No

Yes 16.2.1.3.2(d)1.50 ×

density


INo

1 level

16.2.1.3.2(a)

C and D No

No

NA NA N

Yes 16.2.1.3.2(a) Yes

IINo 16.2.1.3.2(b) No

Yes 16.2.1.3.2(b) Yes

IIINo 16.2.1.3.2(c) No

Yes 16.2.1.3.2(c) Yes

IV

No

2 levels

16.2.1.3.2(d) No

Yes 16.2.1.3.2(d)1.50 ×

density

NA: Not applicable.

16.2.1.3.3.3

Where Class I, Class II, and Class III commodities are encapsulated, ceiling sprinkler density shall be 25percent greater than for nonencapsulated.


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16.2.1.3.3.4

Where Class IV commodities are encapsulated, ceiling sprinkler density shall be 50 percent greater thanfor nonencapsulated.

16.2.1.3.4 Ceiling Sprinkler Density Adjustments.

16.2.1.3.4.1

For storage height over 12 ft (3.7 m) up to and including 25 ft (7.6 m) protected with ceiling sprinklers onlyand for storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected with ceiling sprinklersand minimum required in-rack sprinklers, densities obtained from design curves shall be adjusted inaccordance with Figure 16.2.1.3.4.1.

Figure 16.2.1.3.4.1 Ceiling Sprinkler Density vs. Storage Height.

16.2.1.3.4.2

For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected with ceiling sprinklers andminimum required in-rack sprinklers, densities obtained from design curves shall be used. Densities shallnot be adjusted in accordance with Figure 16.2.1.3.4.1.


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16.2.1.3.4.3

For storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected with ceiling sprinklers andwith more than one level of in-rack sprinklers, but not in every tier, densities obtained from design curvesand adjusted in accordance with Figure 16.2.1.3.4.1 shall be permitted to be reduced an additional 20percent, as indicated in Table 16.2.1.3.4.3.

Table 16.2.1.3.4.3 Adjustment to Ceiling Sprinkler Density for Storage Height and In-Rack Sprinklers

Storage HeightIn-Rack

Sprinklers

Apply Figure16.2.1.3.4.1 for Storage

Height Adjustment

Permitted Ceiling SprinklersDensity Adjustments Where

In-Rack Sprinklers Are Installed


None Yes None


Minimum required Yes None

More thanminimum, but not inevery tier

YesReduce density 20% from that ofminimum in-rack sprinklers

In every tier YesReduce density 40% from that ofminimum in-rack sprinklers


Minimum required No None

More thanminimum, but not inevery tier

NoReduce density 20% from that ofminimum in-rack sprinklers

In every tier NoReduce density 40% from that ofminimum in-rack sprinklers

16.2.1.3.4.4

For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected with ceiling sprinklers andwith more than the minimum required level of in-rack sprinklers, but not in every tier, densities obtainedfrom design curves shall be permitted to be reduced 20 percent, as indicated in Table 16.2.1.3.4.3.Densities shall not be adjusted in accordance with Figure 16.2.1.3.4.1 for storage height.

16.2.1.3.4.5 *

For storage height over 12 ft (3.7 m) up to and including 20 ft (6.1 m) protected with ceiling sprinklers andin-rack sprinklers at each tier, densities obtained from design curves and adjusted in accordance withFigure 16.2.1.3.4.1 shall be permitted to be reduced an additional 40 percent, as indicated in Table16.2.1.3.4.3.

16.2.1.3.4.6 *

For storage height over 20 ft (6.1 m) up to and including 25 ft (7.6 m) protected with ceiling sprinklers andin-rack sprinklers at each tier, densities obtained from design curves shall be permitted to be reduced 40percent, as indicated in Table 16.2.1.3.4.3. Densities shall not be adjusted in accordance with Figure16.2.1.3.4.1 for storage height.

16.2.1.3.4.7

Where solid, flat-bottom, combustible pallets (slave pallets) are used with storage height up to andincluding 25 ft (7.6 m), the densities that are indicated in the design curves shown in Figure 16.2.1.3.2(a)through Figure 16.2.1.3.2(g), based on conventional pallets, shall be increased 20 percent for the givenarea.

(A)

The percentage shall be applied to the density determined in accordance with 16.2.1.3.4.

(B)

The increase in density shall not apply where in-rack sprinklers are utilized in the design.

16.2.1.3.5

For solid shelf rack storage, Table 16.2.1.3.2 shall be used to establish the density/area criteria and in-racksprinklers shall be installed in accordance with 16.1.6.

16.2.1.4 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height Protected with Control Mode Density/Area Sprinklers at Ceiling.

16.2.1.4.1 In-Rack Sprinkler Location for Rack Storage of Class I Through Class IV Commodities StoredUp to and Including 25 ft (7.6 m) in Height.


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16.2.1.4.1.1

In single- or double-row racks, in-rack sprinklers shall be installed in accordance with Table 16.2.1.3.2.

16.2.1.4.1.2

In multiple-row racks no deeper than 16 ft (4.9 m) with aisles 8 ft (2.4 m) or more in width, in-rack sprinklersshall be installed in accordance with Table 16.2.1.3.3.1.

16.2.1.4.1.3

In multiple-row racks deeper than 16 ft (4.9 m) or with aisles less than 8 ft (2.4 m) wide, in-rack sprinklersshall be installed in accordance with Table 16.2.1.3.3.2.

16.2.1.4.1.4

In-rack sprinklers at one level only for storage up to and including 25 ft (7.6 m) high shall be located at thefirst tier level at or above one-half of the storage height.

16.2.1.4.1.5

In-rack sprinklers at two levels only for storage up to and including 25 ft (7.6 m) high shall be located at thefirst tier level at or above one-third and two-thirds of the storage height.

16.2.1.4.2 In-Rack Sprinkler Spacing for Rack Storage of Class I Through Class IV Commodities StoredUp to and Including 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers at theCeiling.

16.2.1.4.2.1 *

Maximum horizontal spacing of in-rack sprinklers in single- or double-row racks up to and including 25 ft(7.6 m) in height shall be in accordance with Table 16.2.1.4.2.1.

Table 16.2.1.4.2.1 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored in Single- orDouble-Row Racks Up to 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers at theCeiling

Commodity Class

Aisle Widths I and II III IV

Encapsulated ft m ft m ft m ft m

No 8 2.4 12 3.7 12 3.7 10 3.0

No 4 1.2 12 3.7 10 3.0 10 3.0

Yes — — 8 2.4 8 2.4 8 2.4

16.2.1.4.2.2 *

Maximum horizontal spacing and maximum area of coverage of in-rack sprinklers on branch lines, inmultiple-row racks with storage up to and including 25 ft (7.6 m) in height, shall be in accordance withTable 16.2.1.4.2.2.

Table 16.2.1.4.2.2 In-Rack Sprinkler Spacing for Class I, II, III, and IV Commodities Stored in Multi-RowRacks Up to 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers at the Ceiling

Commodity Class

I, II, III IV


ft m ft 2 m 2 ft m ft 2 m 2

12 3.7 100 9.3 8 2.4 80 7.4

(A)

The rack plan view shall be considered in determining the area covered by each sprinkler.

(B)

The aisles shall not be included in area calculations.

16.2.1.4.2.3 *

The elevation of in-rack sprinkler deflectors with respect to storage shall not be a consideration in single- ordouble-row rack storage up to and including 20 ft (6.1 m) high. (See Section C.16.)

16.2.1.4.2.4 *


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In single- or double-row racks without solid shelves with storage over 20 ft (6.1 m) high, or in multiple-rowracks, or in single- or double-row racks with solid shelves and storage height up to and including 25 ft (7.6m), a minimum of 6 in. (152 mm) vertical clear space shall be maintained between the in-rack sprinklerdeflectors and the top of a tier of storage.

(A)


16.2.1.4.2.5

For multiple-row racks, a minimum of 6 in. (152 mm) shall be maintained between the in-rack sprinklerdeflector and the top of a tier of storage.

16.2.1.4.2.6

Sprinklers installed in racks shall be spaced without regard to rack uprights. (See Section C.17.)

16.2.1.4.3 In-Rack Sprinkler Water Demand for Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height Protected by Control Mode Density/Area Sprinklers inthe Ceiling.

See Section C.18.

16.2.1.4.3.1

The water demand for sprinklers installed in racks shall be based on simultaneous operation of the mosthydraulically remote sprinklers as follows:



(3) Ten sprinklers (five on each two top levels) where more than one level is installed in racks with ClassI, Class II, or Class III commodities

(4) Fourteen sprinklers (seven on each two top levels) where more than one level is installed in rackswith Class IV commodities

16.2.1.4.3.2

Where a storage rack, due to its length, requires less than the number of in-rack sprinklers specified in16.2.1.4.3.1 (1) through 16.2.1.4.3.1 (4), only those in-rack sprinklers in a single rack shall be included inthe calculation.

16.2.1.4.4 In-Rack Sprinkler Discharge Pressure for Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height Protected by Control Mode Density/AreaSprinklers at the Ceiling.

Sprinklers in racks shall discharge at not less than 15 psi (1 bar) for all classes of commodities. (SeeSection C.19.)

16.2.2 CMSA Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height.

16.2.2.1


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Protection of single-, double-, and multiple-row rack storage for Class I through Class IV commodities shallbe in accordance with Table 16.2.2.1.

Table 16.2.2.1 CMSA Sprinkler Design Criteria for Rack Storage of Class I Through Class IVCommodities (Encapsulated and Nonencapsulated) Stored Up to and Including 25 ft (7.6 m) in Height

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Numberof Design

Sprinklers


ft m ft m psi bar


Class I or II

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.1

11.2 (160)Upright

Wet 20 25 1.7

Dry 30 25 1.7

16.8 (240)Upright

Wet 15 10 0.7

Dry 30 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

Class III

20 6.1 30 9.1

11.2 (160)Upright

Wet 15 25 1.7

Dry 25 25 1.7

16.8 (240)Upright

Wet 15 15 1.0

Dry 25 15 1.0

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.111.2 (160)Upright

Wet 15

+

1 level of in-rack 25 1.7

Dry 25

+


16.8 (240) UprightWet 15 22 1.5

Dry 25

+


19.6 (280) Pendent Wet 15 16 1.1

35 10.6 11.2 (160) Upright Wet 15

+


Dry 25

+


16.8 (240) Upright Wet 15

+


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Dry 25

+

1 level ofin-rack

15 1.0

19.6 (280)Pendent

Wet 15 25 1.7

40 12.119.6 (280)Pendent

Wet 15 30 2.1

ClassIV

20 6.1

25 7.6

11.2 (160)Upright

Wet 15 50 3.5

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1

11.2 (160)Upright

Wet20 50 3.5

15 75 5.2

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.111.2 (160)Upright

Wet 15

+


16.8 (240) Upright Wet 15 22 1.5

19.6 (280) Pendent Wet 15 16 1.1

35 10.6 11.2 (160) Upright Wet 20

+


15

+



+


15

+


19.6 (280) Pendent Wet 15 25 1.7

40 12.1 19.6 (280) Pendent Wet 15 30 2.1

16.2.2.1.1

Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted where in-racksprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in every level belowthe highest solid shelf.

16.2.2.2

Where in-rack sprinklers are required by Table 16.2.2.1, in-rack sprinkler spacing, design pressure, andhydraulic calculation criteria shall be in accordance with the requirements of 16.2.2.7 as applicable for thecommodity.


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16.2.2.3

Protection shall be provided as specified in Table 16.2.2.1 or appropriate NFPA standards in terms ofminimum operating pressure and the number of sprinklers to be included in the design area.



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16.2.2.4.1


16.2.2.4.2

Where each joist channel of open wood joist construction is fully firestopped to its full depth at intervals notexceeding 20 ft (6.1 m), the lower pressures specified in Table 16.2.2.1 shall be permitted to be used.



16.2.2.6

Building steel shall not require special protection where Table 16.2.2.1 is applied as appropriate for thestorage configuration.

16.2.2.7 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height Protected with Control Mode Specific Application Sprinklers at the Ceiling.

16.2.2.7.1

Where in-rack sprinklers are required by Table 16.2.2.1, in-rack sprinklers shall be installed at the first tierlevel at or above one-half of the storage height.

16.2.2.7.2

The minimum of 6 in. (152.4 mm) vertical clear space shall be maintained between the sprinkler deflectorsand the top of a tier of storage.

16.2.2.7.3 *


16.2.2.7.4

The maximum horizontal distance between in-rack sprinklers shall be 8 ft (1.5 m).

16.2.2.7.5

Where distances between transverse flues exceed the maximum allowable distances, sprinklers shall beinstalled at the intersection of the transverse and longitudinal flues, and additional sprinklers shall beinstalled between transverse flues to meet the maximum distance rules.

16.2.2.7.6



The water demand for in-rack sprinklers shall be based on simultaneous operation of the mosthydraulically remote eight sprinklers.


In-rack sprinklers shall discharge at not less than 15 psi (1 bar) for all classes of commodities. (SeeSection C.19.)

16.2.3 * Early Suppression Fast-Response (ESFR) Sprinklers for Rack Storage of Class I ThroughClass IV Commodities Stored Up to and Including 25 ft (7.6 m) in Height.


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16.2.3.1


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Protection of single-, double-, and multiple-row rack storage of Class I through Class IV commodities shallbe in accordance with Table 16.2.3.1.

Table 16.2.3.1 ESFR Sprinkler Protection of Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height



MaximumCeiling/Roof


MinimumOperatingPressure In-Rack

SprinklerRequirementsft m ft m psi bar

Single-row,double-row,andmultiple-rowracks (noopen-topcontainers)

Class I, II, III, orIV, encapsulated

ornonencapsultated

20 6.1 25 7.614.0

(200)

Upright/

pendent50 3.4 No


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MaximumCeiling/Roof



In-RackSprinkler


16.8

(240)

Upright/

pendent35 2.4 No

22.4

(320)pendent 25 1.7 No

25.2


30 9.1

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No

22.4


25.2


35 10.7

14.0

(200)

Upright/

pendent75 5.2 No

16.8

(240)

Upright/

pendent52 3.6 No

22.4


25.2


4012.2 or12.1

16.8


22.4


25.2


45 13.7

14.0


16.8


22.4


25.2


25 7.6

30 9.1

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No

22.4



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MaximumCeiling/Roof



In-RackSprinkler


25.2


32 9.8

14.0

(200)

Upright/

pendent60 4.1 No

16.8

(240)

Upright/

pendent42 2.9 No

35 10.7

14.0

(200)

Upright/

pendent75 5.2 No

16.8

(240)

Upright/

pendent52 3.6 No

22.4


25.2


4012.2 or12.1

16.8


22.4


25.2


45 13.7

14.0


16.8


22.4


25.2


16.2.3.2

ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unless the solid shelf racksare protected with in-rack sprinklers in accordance with 16.1.6.

16.2.3.2.1

Where solid shelves are used, in-rack sprinklers shall be installed in every level below the highest solidshelf.

16.2.3.3

ESFR sprinklers shall not be permitted to protect storage with open top containers.

16.2.3.4

ESFR sprinkler systems shall be designed such that the minimum operating pressure is not less than thatindicated in Table 16.2.3.1 for type of storage, commodity, storage height, and building height involved.

16.2.3.5


16.2.3.6 In-Rack Sprinkler Requirements for Rack Storage of Class I Through Class IV CommoditiesStored Up to and Including 25 ft (7.6 m) in Height Where ESFR Sprinklers Are Being Used at the Ceiling.


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16.2.3.6.1

Where required by Table 16.2.3.1, in-rack sprinklers shall be installed at the first tier level at or aboveone-half of the storage height.

16.2.3.6.2

In-rack sprinklers shall be K-8.0 (115) or K-11.2 (160) quick-response, ordinary-temperature sprinklers.

16.2.3.6.3


16.2.3.6.4


16.2.3.6.5 *


16.2.3.6.6


16.2.3.6.7


16.2.3.6.8

The water demand for sprinklers installed in racks shall be based on simultaneous operation of the mosthydraulically remote eight sprinklers.

16.2.3.6.9

Each of the in-rack sprinklers described in 16.2.3.6.8 shall discharge at a minimum of 60 gpm (227L/min).

16.2.4 Special Design for Rack Storage of Class I Through Class IV Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height.

16.2.4.1 Slatted Shelves.

16.2.4.1.1 *

Slatted rack shelves shall be considered equivalent to solid rack shelves where the shelving is notconsidered open rack shelving or where the requirements of 16.2.4.1.2 are not met. (See Section C.20.)


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16.2.4.1.2

A wet pipe system that is designed to provide a minimum of 0.6 gpm/ft2 (24.5 mm/min) density over a

minimum area of 2000 ft2 (186 m2) or K-14.0 (200) ESFR sprinklers operating at a minimum of 50 psi (3.4bar), K-16.8 (240) sprinklers operating at a minimum of 32 psi (2.2 bar), K-22.4 (320) ESFR sprinklersoperating at a minimum of 25 psi (1.7 bar), or K-25.2 (360) ESFR sprinklers operating at a minimum of 15psi (1 bar) shall be permitted to protect single-row and double-row racks with slatted rack shelving whereall of the following conditions are met:

(1) Sprinklers shall be K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice spray sprinklers with atemperature rating of ordinary, intermediate, or high and shall be listed for storage occupancies orshall be K-14.0 (200), K-16.8 (240), K-22.4 (320) ESFR, or K-25.2 (360) ESFR.

(2) The protected commodities shall be limited to Class I through Class IV, Group B plastics, Group Cplastics, cartoned (expanded and unexpanded) Group A plastics, and exposed (unexpanded) GroupA plastics.

(3) Slats in slatted rack shelving shall be a minimum nominal 2 in. (51 mm) thick by maximum nominal 6in. (152 mm) wide, with the slats held in place by spacers that maintain a minimum 2 in. (51 mm)opening between each slat.

(4) Where K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice sprinklers are used, there shall be noslatted shelf levels in the rack above 12 ft (3.7 m). Open rack shelving using wire mesh shall bepermitted for shelf levels above 12 ft (3.7 m).

(5) Transverse flue spaces at least 3 in. (76 mm) wide shall be provided at least every 10 ft (3.1 m)horizontally.

(6) Longitudinal flue spaces at least 6 in. (152 mm) wide shall be provided for double-row racks.Longitudinal flue spaces shall not be required where ESFR sprinklers are used.

(7) The aisle widths shall be at least 7 1⁄2 ft (2.3 m).

(8) The maximum roof height shall be 27 ft (8.2 m) or 30 ft (9.1 m) where ESFR sprinklers are used.

(9) The maximum storage height shall be 20 ft (6.1 m).

(10) Solid plywood or similar materials shall not be placed on the slatted shelves so that they block the 2in. (51 mm) spaces between slats, nor shall they be placed on wire mesh shelves.


The rack storage arrangements addressed by these sections are not limited to “open rack” configurations.

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16.2.1.2.3

For storage 12 ft (3.7 m) or less in height that does not meet the definition of Miscellaneous Storage thatis on solid shelf racks, in-rack sprinklers shall be provided in accordance with 16.1.6 , and ceiling sprinklerprotection shall be provided in accordance with Chapter 13.


No substantiation has been given, including full scale testing and/or fire history, as to why the existing language needs to be changed to require in-rack sprinklers for Class I-IV Commodities storing products up to [and including] 12' in height. Additionally no substantiation is given, including full scale testing and/or fire history, as to why miscellaneous storage of Class I-IV Commodities storing products up to [and including] 12' in height are exempted out of this proposed requirement.

Additionally the location of this section is such that it will be missed by many since most users would use Chapter 13 directly.

Related Item

First Revision No. 296-NFPA 13-2013 [New Section after 16.2.1.2.2]


Submitter Full Name: Elley Klausbruckner

Organization: Klausbruckner & Associates, Inc

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Public Comment No. 336-NFPA 13-2014 [ New Section after 16.2.1.3.4.6 ]

16.2.1.3.4.6.1

It is not the intent that an in-rack sprinkler be installed above the top-tier of storage when utilizing“in-rack sprinklers in every tier”


The annex note makes clear that the intent of the committee to require in rack sprinklers in every tier does not include an in-rack sprinkler above the top tier of storage, which is protected by the ceiling sprinklers. As an annex note cannot override the body of the standard, this wording should be in the body of the standard.



Public Comment No. 305-NFPA 13-2014 [Section No. A.16.2.1.3.4.6]

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First Revision No. 206-NFPA 13-2013 [New Section after A.16.2.1.3.2.1]





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16.2.1.3.5

For solid shelf rack storage, Table 16.2.1.3.2 shall be used to establish the density/area criteria andin-rack sprinklers shall be installed in accordance with 16.1.6 .


more user friendly to have criteria located in section on solid shelves




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Submittal Date: Tue May 13 14:49:19 EDT 2014


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16.2.1.4.1 In-Rack Sprinkler Location for Rack Open Rack Storage of Class I Through Class IVCommodities Stored Up to and Including 25 ft (7.6 m) in Height.

16.2.1.4.1.1

In single- or double-row racks, in-rack sprinklers shall be installed in accordance with Table 16.2.1.3.2.

16.2.1.4.1.2

In multiple-row racks no deeper than 16 ft (4.9 m) with aisles 8 ft (2.4 m) or more in width, in-rack sprinklersshall be installed in accordance with Table 16.2.1.3.3.1.

16.2.1.4.1.3

In multiple-row racks deeper than 16 ft (4.9 m) or with aisles less than 8 ft (2.4 m) wide, in-rack sprinklersshall be installed in accordance with Table 16.2.1.3.3.2.

16.2.1.4.1.4

In-rack sprinklers at one level only for storage up to and including 25 ft (7.6 m) high shall be located at thefirst tier level at or above one-half of the storage height.

16.2.1.4.1.5

In-rack sprinklers at two levels only for storage up to and including 25 ft (7.6 m) high shall be located at thefirst tier level at or above one-third and two-thirds of the storage height.


Adding "open" to the title clarifies that the referenced tables 16.2.1.3.2, 16.2.1.3.3.1, and 16.2.1.3.3.2 are in reference to open racks and not solid shelf racks.

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282 of 579 5/19/2014 1:50 PM

Public Comment No. 79-NFPA 13-2014 [ Section No. 16.2.1.4.3.2 ]

16.2.1.4.3.2

Where a storage rack, due to its length, requires less than the number of in-rack sprinklers specified in16.2.1.4.3.1 (1) through 16.2.1.4.3.1 (4), only those in-rack sprinklers in a single rack shall be included inthe calculation.


The committee statement is that this section provides clarity. Since this requirement is clearly stated in 16.1.8.3 and it is only repeated in 16.2, it should either be repeated in 16.3, 17.2, and 17.3 or deleted.


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Public Input No. 95-NFPA 13-2013 [Section No. 16.2.1.4.3.2]




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16.2.2.1.1 CMSA sprinklers shall not be permitted to protect storage on solid shelf racks unlessthe solid shelf racks are protected with in-rack sprinklers in accordance with 16.1.6.

16.2.2.1.1.1 Where solid shelves are used, the in-rack sprinklers shall be installed in every levelbelow the highest solid shelf.





Editorial – to co-ordinate the text with the similar requirement of 16.2.3.2 (FR-210). Similar requirements should be worded similarly, for clarity and consistency.

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16.2.2.1.1

Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted where in-racksprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in every level belowthe highest solid shelf or horizontal barrier .


This language clarifies that in-rack protection must be installed below horizontal barriers as well as under solid shelves. In some sections editorial changes have been made for consistency in format.

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16.2.3.2

Where solid shelves are used, in

Protection of solid shelf racks with ESFR sprinklers at the ceiling shall not be permitted to protectstorage on solid shelf racks unless the solid shelf racks are protected with where in-rack sprinklers areinstalled in accordance with 16.1.6 .

16.2.3.2.1

In -rack sprinklers shall be installed in every level below the highest solid shelf or horizontal barrier .





Public Comment No. 317-NFPA 13-2014 [Section No. 16.2.2.1.1]

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16.2.4.1.1*

Slatted rack shelves shall be considered equivalent to solid rack shelves where the shelving is notconsidered open rack shelving or where the requirements of 16.2.4.1.2 are not met. (See Section C.20.)


The redundancy task group initiated this comment.

The title to 16.2 emphasizes that it provides criteria for open rack assemblies. The use of double negatives in 16.2.4.1.1 (it is NOT considered open when the requirements are NOT met) confuses the issue that this section is providing criteria for when slatted shelves are consider to be equivalent to an open rack.

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16.3 Protection Criteria for Open Rack for Rack Storage of Class I Through Class IV CommoditiesStored Over 25 ft (7.6 m) in Height.

16.3.1 Control Mode Density/Area Sprinkler Protection Criteria for Rack Storage of Class I Through ClassIV Commodities Stored Over 25 ft (7.6 m) in Height.

16.3.1.1 *


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For single- and double-row racks, the water demand for nonencapsulated storage separated by aisles atleast 4 ft (1.2 m) wide and with a clearance to ceiling up to and including 10 ft (3.1 m) shall be inaccordance with Table 16.3.1.1.

Table 16.3.1.1 Single- or Double-Row Racks of Class I Through Class IV Commodities Stored Over 25 ft(7.6 m) in Height with Aisles 4 ft (1.2 m) or More in Width

CommodityClass

In-Rack SprinklersApproximate Vertical

Spacing at TierNearest the Vertical

Distance andMaximum Horizontal

Spacing a,b,c

Figure

MaximumStorageHeight Stagger

CeilingSprinklerOperating

Area

Ceiling Sprinkler Density C

to Ceiling Up to 10 ft (3.1

OrdinaryTemperature High Tem

Longitudinal

Flue d Face e,f ft 2 m 2 gpm/ft 2 mm/min gpm/ft 2

I

Vertical 20 ft(6.1 m)

Horizontal 10ft (3.1 m)underhorizontalbarriers

None 16.3.1.3.1.1(A)(a)30 ft (9.1m)

No

2000 186

0.25 10.2 0.35

Vertical 20 ft(6.1 m)Horizontal 10ft (3.1 m)

Vertical20 ft (6.1m)Horizontal10 ft (3.1m)

16.3.1.3.1.1(A)(b)Higherthan 25 ft(7.6 m)

Yes 0.25 10.2 0.35

I, II, III

Vertical 10 ft(3.1 m) or at15 ft (4.6 m)and 25 ft (7.6m)

None 16.3.1.3.1.1(A)(c)30 ft (9.1m)

Yes

2000 186

0.3 12.2 0.4


Horizontal 10ft (3.1 m)

Vertical30 ft (9.1m)

Horizontal10 ft (3.1m)

16.3.1.3.1.1(A)(d)

Higherthan 25 ft(7.6 m)

Yes 0.3 12.2 0.4





16.3.1.3.1.1(A)(e) Yes 0.3 12.2 0.4


Horizontal 5 ft(1.5 m)



16.3.1.3.1.1(A)(f) No 0.3 12.2 0.4

Horizontalbarriers at 20ft (6.1 m)

Vertical

16.3.1.3.1.1(A)(g) Yes 0.3 12.2 0.4


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intervals —two lines ofsprinklersunder barriers— maximumhorizontalspacing 10 ft(3.1 m),staggered

I, II, III, IV





16.3.1.3.1.1(A)(h)

Higherthan 25 ft(7.6 m)

Yes

2000 186

0.35 14.3 0.45


Horizontal 5 ft(1.5 m)



16.3.1.3.1.1(A)(i) No 0.35 14.3 0.45

Horizontalbarriers at 15ft (4.6 m)

Verticalintervals —two lines ofsprinklersunderbarriers —maximumhorizontalspacing 10 ft(3.1 m),staggered

16.3.1.3.1.1(A)(j) Yes 0.35 14.3 0.45

CommodityClass

In-Rack SprinklersApproximate Vertical

Spacing at TierNearest the Vertical

Distance andMaximum Horizontal

Spacing a,b,c

Figure

MaximumStorageHeight Stagger


Area

Ceiling Sprinkler Density C

to Ceiling Up to 10 ft (3.1

OrdinaryTemperature High Tem

Longitudinal

Flue d Face e,f ft 2 m 2 gpm/ft 2 mm/min gpm/ft 2

aMinimum in-rack sprinkler discharge, 30 gpm (114 L/min).

bWater shields required.

cAll in-rack sprinkler spacing dimensions start from the floor.

dInstall sprinklers at least 3 in. (76.2 mm) from uprights.

eFace sprinklers shall not be required for a Class I commodity consisting of noncombustible products onwood pallets (without combustible containers), except for arrays shown in Figure 16.3.1.3.1.1(A)(g) andFigure 16.3.1.3.1.1(A)(j).


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fIn Figure 16.3.1.3.1.1(A)(a) through Figure 16.3.1.3.1.1(A)(j), each square represents a storage cube thatmeasures 4 ft to 5 ft (1.2 m to 1.5 m) on a side. Actual load heights can vary from approximately 18 in. to10 ft (0.46 m to 3.1 m). Therefore, there can be one load to six or seven loads between in-rack sprinklersthat are spaced 10 ft (3.1 m) apart vertically.

gFor encapsulated commodity, increase density 25 percent.

16.3.1.1.1

Where storage as described in 16.3.1.1 is encapsulated, ceiling sprinkler density shall be 25 percentgreater than for nonencapsulated storage.

16.3.1.2

For multiple-row racks, the water demand for nonencapsulated storage separated by aisles at least 4 ft (1.2m) wide and with a clearance to ceiling up to and including 10 ft (3.1 m) shall be in accordance with Table16.3.1.2.

Table 16.3.1.2 Multiple-Row Racks of Class I Through Class IV Commodities Stored Over 25 ft (7.6 m) inHeight

CommodityClass Encapsulated

In-Rack Sprinklers a,b,c

HeightLimit(ft) Stagger Figure

MaximumSpacingfrom Top

ofStorage

to HighestIn-Rack

Sprinklers

CeSpriOper

Ar

MaximumVertical

Spacing

MaximumHorizontalSpacing

in A Flue

MaximumHorizontalSpacingacrossFlue

ft m ft m ft m ft m ft 2

INo

20 6.1 12 3.7 10 3.1

NoneBetweenadjacentflues

16.3.1.3.1.3(A)(a) 10 3.1

2000

Yes

I, II, and IIINo

15 4.6 10 3.1 10 3.1 16.3.1.3.1.3(A)(b) 10 3.1Yes

I, II, III, andIV

No10 3.1 10 3.1 10 3.1 16.3.1.3.1.3(A)(c) 5 1.5

Yes

For SI units, °C = 5⁄9 (°F-32); 1 gpm/ft2 = 40.746 mm/min.

aAll four rack faces shall be protected by sprinklers located within the racks and no more than 18 in. (0.46m) from the faces, as indicated in Figure 16.3.1.3.1.3(A)(a) through Figure 16.3.1.3.1.3(A)(c). It shall not berequired for each sprinkler level to protect all faces.

bAll in-rack sprinkler spacing dimensions start from the floor.

cIn Figure 16.3.1.3.1.3(A)(a) through Figure 16.3.1.3.1.3(A)(c), each square represents a storage cubemeasuring 4 ft to 5 ft (1.2 m to 1.5 m) on a side. Actual load heights can vary from approximately 18 in. to10 ft (0.46 m to 3.1 m). Therefore, there could be as few as one load or as many as six or seven loadsbetween in-rack sprinklers that are spaced 10 ft (3.1 m) apart vertically.

16.3.1.2.1

Where such storage is encapsulated, ceiling sprinkler density shall be 25 percent greater than fornonencapsulated storage.

16.3.1.3 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft(7.6 m) in Height Protected with Control Mode Density/Area Sprinklers at Ceiling.

16.3.1.3.1 In-Rack Sprinkler Location for Rack Storage of Class I Through Class IV Commodities StoredOver 25 ft (7.6 m) in Height Protected with Control Mode Density/Area Sprinklers at Ceiling.

16.3.1.3.1.1 * Double-Row Racks.


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(A)


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In double-row racks and with a maximum of 10 ft (3.1 m) between the top of storage and the ceiling, in-racksprinklers shall be installed in accordance with Table 16.3.1.1 and Figure 16.3.1.3.1.1(A)(a) throughFigure 16.3.1.3.1.1(A)(j) . The highest level of in-rack sprinklers shall be not more than 10 ft (3.1 m) belowthe top of storage. Where a single-row rack is mixed with double-row racks, Table 16.3.1.1 and Figure16.3.1.3.1.1(A)(a) through Figure 16.3.1.3.1.1(A)(j) shall be used.

Figure 16.3.1.3.1.1(A)(a) In-Rack Sprinkler Arrangement, Class I Commodities, Storage Height 25 ftto Maximum 30 ft (7.6 m to Maximum 9.1 m).

Figure 16.3.1.3.1.1(A)(b) In-Rack Sprinkler Arrangement, Class I Commodities, Storage HeightOver 25 ft (7.6 m).

Figure 16.3.1.3.1.1(A)(c) In-Rack Sprinkler Arrangement, Class I, II, or III Commodities, StorageHeight 25 ft to Maximum 30 ft (7.6 m to Maximum 9.1 m).

Figure 16.3.1.3.1.1(A)(d) In-Rack Sprinkler Arrangement, Class I, II, or III Commodities, StorageHeight Over 25 ft (7.6 m) — Option 1.

Figure 16.3.1.3.1.1(A)(e) In-Rack Sprinkler Arrangement, Class I, II, or III Commodities, StorageHeight Over 25 ft (7.6 m) — Option 2.

Figure 16.3.1.3.1.1(A)(f) In-Rack Sprinkler Arrangement, Class I, II, or III Commodities, StorageHeight Over 25 ft (7.6 m) — Option 3.


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Figure 16.3.1.3.1.1(A)(g) In-Rack Sprinkler Arrangement, Class I, II, or III Commodities, StorageHeight Over 25 ft (7.6 m) — Option 4.

Figure 16.3.1.3.1.1(A)(h) In-Rack Sprinkler Arrangement, Class I, II, III, or IV Commodities, StorageHeight Over 25 ft (7.6 m) — Option 1.

Figure 16.3.1.3.1.1(A)(i) In-Rack Sprinkler Arrangement, Class I, II, III, or IV Commodities, StorageHeight Over 25 ft (7.6 m) — Option 2.

Figure 16.3.1.3.1.1(A)(j) In-Rack Sprinkler Arrangement, Class I, II, III, or IV Commodities, StorageHeight Over 25 ft (7.6 m) — Option 3.

(B)

Figure 16.3.1.3.1.2(A)(a) through Figure 16.3.1.3.1.2(A)(c) shall be permitted to be used for the protectionof the single-row racks.

16.3.1.3.1.2 * Single-Row Racks.


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(A)


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In single-row racks with storage height over 25 ft (7.6 m) and a maximum of 10 ft (3.1 m) between the top ofstorage and the ceiling, sprinklers shall be installed in accordance with Figure 16.3.1.3.1.2(A)(a) throughFigure 16.3.1.3.1.2(A)(e).

Figure 16.3.1.3.1.2(A)(a) In-Rack Sprinkler Arrangement, Class I, II, III, or IV Commodities,Single-Row Racks, Storage Height Over 25 ft (7.6 m) — Option 1.

Figure 16.3.1.3.1.2(A)(b) In-Rack Sprinkler Arrangement, Class I, II, or III Commodities, Single-RowRacks, Storage Height Over 25 ft (7.6 m) — Option 1.

Figure 16.3.1.3.1.2(A)(c) In-Rack Sprinkler Arrangement, Class I, II, or III Commodities, Single-RowRacks, Storage Height Over 25 ft (7.6 m) — Option 2.


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Figure 16.3.1.3.1.2(A)(d) In-Rack Sprinkler Arrangement, Class I, II, III, or IV Commodities,Single-Row Racks, Storage Height Over 25 ft (7.6 m) — Option 2.

Figure 16.3.1.3.1.2(A)(e) In-Rack Sprinkler Arrangement, Class I, II, III, or IV Commodities,Single-Row Racks, Storage Height Over 25 ft (7.6 m) — Option 3.


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(B)

In single-row racks, where figures show in-rack sprinklers in transverse flue spaces centered between therack faces, it shall be permitted to position these in-rack sprinklers in the transverse flue at any pointbetween the load faces.

16.3.1.3.1.3 * In-Rack Sprinkler Location — Multiple-Row Racks for Rack Storage of Class I ThroughClass IV Commodities Stored Over 25 ft (7.6 m) in Height Protected with Control Mode Density/AreaSprinklers at Ceiling.


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(A)

In multiple-row racks with a maximum of 10 ft (3.1 m) between the top of storage and the ceiling, protectionshall be in accordance with Table 16.3.1.2 and in-rack sprinklers shall be installed as indicated in Figure16.3.1.3.1.3(A)(a) through Figure 16.3.1.3.1.3(A)(c) .

Figure 16.3.1.3.1.3(A)(a) In-Rack Sprinkler Arrangement, Class I Commodities, Multiple-RowRacks, Storage Height Over 25 ft (7.6 m).

Figure 16.3.1.3.1.3(A)(b) In-Rack Sprinkler Arrangement, Class I, II, or III Commodities,Multiple-Row Racks, Storage Height Over 25 ft (7.6 m).

Figure 16.3.1.3.1.3(A)(c) In-Rack Sprinkler Arrangement, Class I, II, III, or IV Commodities,Multiple-Row Racks, Storage Height Over 25 ft (7.6 m).

(B)

The highest level of in-rack sprinklers shall be not more than 10 ft (3.1 m) below maximum storage heightfor Class I, Class II, or Class III commodities or 5 ft (1.5 m) below the top of storage for Class IVcommodities.

16.3.1.3.2 In-Rack Sprinkler Spacing for Rack Storage of Class I Through Class IV Commodities StoredOver 25 ft (7.6 m) in Height Protected with Control Mode Density/Area Sprinklers at Ceiling.

16.3.1.3.2.1 In-Rack Sprinkler Spacing.

In-rack sprinklers shall be staggered horizontally and vertically where installed in accordance with Table16.3.1.1, Figure 16.3.1.3.1.1(A)(a) through Figure 16.3.1.3.1.1(A)(j) , and Figure 16.3.1.3.1.2(A)(a) throughFigure 16.3.1.3.1.2(A)(e).

16.3.1.3.2.2

In-rack sprinklers for storage higher than 25 ft (7.6 m) in double-row racks shall be spaced horizontally andlocated in the horizontal space nearest the vertical intervals specified in Table 16.3.1.1 and Figure16.3.1.3.1.1(A)(a) through Figure 16.3.1.3.1.1(A)(j) .


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16.3.1.3.2.3 In-Rack Sprinkler Spacing.

Maximum horizontal spacing of sprinklers in multiple-row racks with storage higher than 25 ft (7.6 m) shallbe in accordance with Figure 16.3.1.3.1.3(A)(a) through Figure 16.3.1.3.1.3(A)(c) .

16.3.1.3.2.4 *


(A)


(B)


16.3.1.3.3 In-Rack Sprinkler Water Demand for Rack Storage of Class I Through Class IV CommoditiesStored Over 25 ft (7.6 m) in Height Protected with Control Mode Density/Area Sprinklers at the Ceiling.






16.3.1.3.3.1 In-Rack Sprinkler Discharge for Rack Storage of Class I Through Class IV CommoditiesStored Over 25 ft (7.6 m) in Height Protected with Control Mode Density/Area Sprinklers at the Ceiling.

Sprinklers in racks shall discharge at a rate not less than 30 gpm (113.6 L/min) for all classes ofcommodities.

16.3.2 CMSA Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft(7.6 m) in Height.

16.3.2.1


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Protection of single-, double-, and multiple-row rack storage Class I through Class IV commodities shall bein accordance with Table 16.3.2.1.

Table 16.3.2.1 CMSA Sprinkler Design Criteria for Rack Storage of Class I Through Class IV CommoditiesStored Over 25 ft (7.6 m) in Height (Encapsulated and Nonencapsulated)

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Numberof Design

Sprinklers


ft m ft m psi bar


Class I or II 30 9.1 35 10.611.2 (160)Upright

Wet 20

+


Dry 30

+



+


Dry 30

+


19.6 (280) Pendent Wet 15 25 1.7

35 10.6 40 12.1

11.2 (160) Upright Dry* 36 55 3.8

16.8 (240) Upright Dry* 36 22 1.5

19.6 (280) Pendent Wet 15 30 2.1

Class III or IV30 9.1 35 10.6 19.6 (280) Pendent Wet 15 25 1.7

35 10.6 40 12.1 19.6 (280) Pendent Wet 15 30 2.1

*High temperature–rated sprinklers shall be used. Dry system water delivery shall be determined inaccordance with 7.2.3.6 with a maximum time of water delivery of 30 seconds with four sprinklers initiallyopen.

16.3.2.1.1

Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted where in-racksprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in every level belowthe highest solid shelf.

16.3.2.2

Where in-rack sprinklers are required by Table 16.3.2.1, in-rack sprinkler spacing, design pressure, andhydraulic calculation criteria shall be in accordance with the requirements of 16.3.2.7 as applicable for thecommodity.

16.3.2.3




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16.3.2.4.1

Where CMSA sprinklers are installed under open wood joist construction, their minimum operatingpressure shall be 50 psi (3.4 bar) for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8 (240) sprinkler.

16.3.2.4.2




16.3.2.6

Building steel shall not require special protection where Table 16.3.2.1 are applied as appropriate for thestorage configuration.

16.3.2.7 In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft(7.6 m) in Height Protected with CMSA Sprinklers at the Ceiling.

16.3.2.7.1

Where in-rack sprinklers are required by Table 16.3.2.1 in-rack sprinklers shall be installed at the first tierlevel at or above one-half of the storage height.

16.3.2.7.2

The minimum of 6 in. (152 mm) vertical clear space shall be maintained between the sprinkler deflectorsand the top of a tier of storage.

16.3.2.7.3


16.3.2.7.4


16.3.2.7.5


16.3.2.7.6





Sprinklers in racks shall discharge at not less than 15 psi (1 bar) for all classes of commodities. (SeeSection C.19.)

16.3.3 * Early Suppression Fast-Response (ESFR) Sprinklers for Rack Storage of Class I ThroughClass IV Commodities Stored Over 25 ft (7.6 m) in Height.


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16.3.3.1


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Protection of single-, double-, and multiple-row rack storage of Class I through Class IV commodities shallbe in accordance with Table 16.3.3.1.

Table 16.3.3.1 ESFR Sprinkler Protection of Rack Storage of Class I Through Class IV CommoditiesStored Over 25 ft (7.6 m) in Height



MaximumCeiling/

RoofHeight

NominalK-Factor Orientation


SprinklerRequirements

HosStrea

Allowa

ft m ft m psi bar gpm L

Single-,double-, andmultiple-rowrack (noopen-topcontainers)

Class I, II, III, orIV, encapsulatedornonencapsulated

30 9.1

35 10.7

14.0

(200)Upright/pendent 75 5.2 No

250

16.8(240)

Upright/

pendent52 3.6 No

22.4


25.2(360)

Pendent 20 1.4 No

40 12.2

16.8(240)

Pendent 52 3.6 No

22.4


25.2(360)

Pendent 25 1.7 No

45 13.7

14.0(200)

Pendent 90 6.2 Yes

16.8(240)

Pendent 63 4.3 Yes

22.4


25.2(360)

Pendent 40 2.8 No

35 10.7

40 12.2

16.8(240)

Pendent 52 3.6 No

22.4


25.2(360)

Pendent 25 1.7 No

45 13.7

14.0(200)

Pendent 90 6.2 Yes

16.8(240)

Pendent 63 4.3 Yes

22.4


25.2(360)

Pendent 40 2.8 No

40 12.2 45 13.716.8



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MaximumCeiling/

RoofHeight



In-RackSprinkler

Requirements

HosStrea

Allowa

ft m ft m psi bar gpm L

22.4


25.2(360)

Pendent 40 2.8 No

16.3.3.2

ESFR protection as defined shall not apply to the following:

(1) Rack storage involving solid shelves, except for situations complying with 16.3.3.2.1

(2) Rack storage involving open-top cartons or containers

16.3.3.2.1

Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permitted where in-racksprinklers are installed in accordance with 16.1.6. In-rack sprinklers shall be installed in every level belowthe highest solid shelf.

16.3.3.3


16.3.3.4


16.3.3.5

Where required by Table 16.3.3.1, one level of K-8.0 (115) or K-11.2 (160) quick-response, ordinary-temperature in-rack sprinklers shall be installed at the tier level closest to but not exceeding one-half ofthe maximum storage height.

16.3.3.5.1

In-rack sprinkler hydraulic design criteria shall be the most hydraulically remote eight sprinklers at 60 gpm(227 L/min).

16.3.3.5.2


16.3.3.5.3

Horizontal spacing shall not be permitted to exceed 5 ft (1.5 m) intervals.

16.3.3.5.4


16.3.3.5.5


16.3.3.5.6


16.3.3.5.7


16.3.4 Special Design for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft (7.6m) in Height.

16.3.4.1

Where high-expansion foam systems are used for storage over 25 ft (7.6 m) high up to and including 35 ft(10.7 m) high, they shall be used in combination with ceiling sprinklers.


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16.3.4.2

The maximum submergence time for the high-expansion foam shall be 5 minutes for Class I, Class II, orClass III commodities and 4 minutes for Class IV commodities.


The rack storage arrangements addressed by these sections are not limited to “open rack” configurations.




Related Item






Street Address:

City:

State:

Zip:



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16.3

Protection Criteria for Open Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft(7.6 m) in Height.

16.3.1

Control Mode Density/Area CMDA) Sprinkler Protection Criteria for Rack Storage of Class I ThroughClass IV Commodities Stored Over 25 ft (7.6 m) in Height.

16.3.1.1 *

For single- and double-row

racks

rack s storage , the water demand for nonencapsulated

storage

commodity separated by aisles ≥ at least 4 ft (1.2 m) wide and

with a

≤ 10 ft (3.1 m) clearance to ceiling up to and including 10 ft (3.1 m) shall be in accordance with Table16.3.1.1 .

Table 16

Table 16 .3.1.

1 Single

1 Single - or Double-Row Racks of Class I Through Class IV Commodities Stored Over 25 ft (7.6 m) inHeight with Aisles 4 ft (1.2 m) or More in Width

CommodityClass

In-Rack Sprinklers Approximate Vertical Spacing at Tier Nearestthe Vertical Distance and Maximum Horizontal

.

Spacing a,b,c

Figure MaximumStorageHeight

Stagger


Area

Ceiling Sprinkler Density Clearance

to Ceiling Up to 10 ft (3.1 m) g

OrdinaryTemperature

HighTemperature

Longitudinal

Flue dFace e,f ft 2 m 2 gpm/ft 2 mm/min gpm/ft 2 mm/mi

I

Vertical 20ft (6.1 m)

.

Horizontal10 ft (3.1m) underhorizontalbarriers

None 16.3.1.3.1.1(A)(a) 30 ft (9.1 m) No 2000 186 0.25 10.2 0.35 14.3


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16.3.1.3.1.1(A)(b)Higher than 25 ft(7.6 m)

Yes 0.25 10.2 0.35 14.3

I, II, III

Vertical10 ft (3.1m) or at15 ft (4.6m) and25 ft (7.6m)

None 16.3.1.3.1.1(A)(c)

30ft(9.1m)

Yes

2000 186

0.3 12.2 0.4 16.3


.

Horizontal 10 ft (3.1 m)

Vertical 30 ft (9.1 m)

.

Horizontal 10 ft (3.1 m)16.3.1.3.1.1(A)(d)

Higher than 25 ft (7.6 m)

Yes 0.3 12.2 0.4 16.3


.



.

Horizontal 5 ft (1.5 m)16.3.1.3.1.1(A)(e) Yes 0.3 12.2 0.4 16.3


.



.

Horizontal 5 ft (1.5 m)16.3.1.3.1.1(A)(f) No 0.3 12.2 0.4 16.3

Horizontal barriers at 20 ft (6.1 m)

.

Vertical intervals — two lines of sprinklers16.3.1.3.1.1(A)(g) Yes 0.3 12.2 0.4 16.3


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under barriers — maximum horizontalspacing 10 ft (3.1 m), staggered

I, II, III, IV

Vertical 15ft (4.6 m)

.



.

Horizontal 10 ft (3.1m)

16.3.1.3.1.1(A)(h)Higher than 25 ft (7.6m)

Yes

2000 186

0.35 14.3 0.45 18.3


.



.

Horizontal 5 ft (1.5 m)16.3.1.3.1.1(A)(i) No 0.35 14.3 0.45 18.3

Horizontal barriers at 15 ft (4.6 m)

.

Vertical intervals — two lines of sprinklers underbarriers — maximum horizontal spacing 10 ft (3.1 m),staggered

16.3.1.3.1.1(A)(j) Yes 0.35 14.3 0.45 18.3

a Minimum in-rack sprinkler discharge, 30 gpm (114 L/min).

b Water shields required.

c All in-rack sprinkler spacing dimensions start from the floor.

d Install sprinklers at least 3 in. (76.2 mm) from uprights.

e Face sprinklers shall not be required for a Class I commodity consisting of noncombustible products onwood pallets (without combustible containers), except for arrays shown in Figure 16.3.1.3.1.1(A)(g) andFigure 16.3.1.3.1.1(A)(j).

f In Figure 16.3.1.3.1.1(A)(a) through Figure 16.3.1.3.1.1(A)(j), each square represents a storage cubethat measures 4 ft to 5 ft (1.2 m to 1.5 m) on a side. Actual load heights can vary from approximately 18 in.to 10 ft (0.46 m to 3.1 m). Therefore, there can be one load to six or seven loads between in-racksprinklers that are spaced 10 ft (3.1 m) apart vertically.

g For encapsulated commodity, increase density 25 percent.

16.3.1.1.1


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Where storage as described in 16.3.1.1 is encapsulated, ceiling sprinkler density shall be 25 percentgreater than for nonencapsulated storage.

16.3.1.2

For multiple-row

racks

rack s storage , the water demand for nonencapsulated storage commodity separated by aisles ≥ atleast 4 ft (1.2 m) wide and with a

clearance to ceiling up to and including

≤ 10 ft (3.1 m) clearance to ceiling up to and including shall be in accordance with Table 16.3.1.2 .

Table 16

Table 16 .3.1.

2 Multiple

2 Multiple -Row Racks of Class I Through Class IV Commodities Stored Over 25 ft (7.6 m) in Height

CommodityClass

Encapsulated

In-Rack Sprinklers a,b,c

HeightLimit(ft)

Stagger Figure

MaxSpafrom

oStor

tHighIn-R

Sprin

MaximumVertical

Spacing

MaximumHorizontalSpacing

in A Flue

MaximumHorizontalSpacingacrossFlue

ft m ft m ft m ft

INo

20 6.1 12 3.7 10 3.1

NoneBetweenadjacentflues

16.3.1.3.1.3(A)(a) 10Yes

I, II, and IIINo

15 4.6 10 3.1 10 3.1 16.3.1.3.1.3(A)(b) 10Yes

I, II, III, andIV

No10 3.1 10 3.1 10 3.1 16.3.1.3.1.3(A)(c) 5

Yes

For SI units, °C = 5 ⁄ 9 (°F-32); 1 gpm/ft 2 = 40.746 mm/min.

a All four rack faces shall be protected by sprinklers located within the racks and no more than 18 in. (0.46m) from the faces, as indicated in Figure 16.3.1.3.1.3(A)(a) through Figure 16.3.1.3.1.3(A)(c). It shall notbe required for each sprinkler level to protect all faces.

b All in-rack sprinkler spacing dimensions start from the floor.

c In Figure 16.3.1.3.1.3(A)(a) through Figure 16.3.1.3.1.3(A)(c), each square represents a storage cubemeasuring 4 ft to 5 ft (1.2 m to 1.5 m) on a side. Actual load heights can vary from approximately 18 in. to10 ft (0.46 m to 3.1 m). Therefore, there could be as few as one load or as many as six or seven loadsbetween in-rack sprinklers that are spaced 10 ft (3.1 m) apart vertically.

16.3.1. 3 2.1


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Where such single, double, or multiple-row rack storage is encapsulated, ceiling sprinkler

density shall be 25 percent

densit y ies from Tables 16.3.1.1 and 16.3.1.2 shall be increased by 25 percent. greater than fornonencapsulated storage.

16.3.1. 4 3

In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft (7.6 m)in Height Protected with Control Mode Density/Area Sprinklers at Ceiling.

16.3.1. 4 3 .1

In-Rack Sprinkler Location for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft(7.6 m) in Height Protected with Control Mode Density/Area Sprinklers at Ceiling.

Note: Change the order to single-row, double row then multiple row and renumber as necessary.

16.3.1.3.1.1 *

Double-Row Racks.

(A)

For the protection of In double-row racks and with a maximum of 10 ft (3.1 m) between the top ofstorage and the ceiling, in-rack sprinklers shall be installed in accordance with Table 16.3.1.1 and anoption shown in Figure 16.3.1.3.1.1(A)(a) through Figure 16.3.1.3.1.1(A)(j) shall be used . . The highestlevel of in-rack sprinklers shall be not more than 10 ft (3.1 m) below the top of storage. Where asingle-row rack is mixed with double-row racks, Table 16.3.1.1 and Figure 16.3.1.3.1.1(A)(a) throughFigure 16.3.1.3.1.1(A)(j) shall be used.

Figure 16

Figure 16 .3.1.3.1.1(A)(a)

In

In -Rack Sprinkler Arrangement, Class I Commodities, Storage Height 25 ft to Maximum 30 ft (7.6 m toMaximum 9.1 m).

Figure 16

Figure 16 .3.1.3.1.1(A)(b)

In

In -Rack Sprinkler Arrangement, Class I Commodities, Storage Height Over 25 ft (7.6 m).


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Figure 16

Figure 16 .3.1.3.1.1(A)(c)

In

In -Rack Sprinkler Arrangement, Class I, II, or III Commodities, Storage Height 25 ft to Maximum 30 ft (7.6m to Maximum 9.1 m).

Figure 16

Figure 16 .3.1.3.1.1(A)(d)

In

In -Rack Sprinkler Arrangement, Class I, II, or III Commodities, Storage Height Over 25 ft (7.6 m) — Option1.

Figure 16

Figure 16 .3.1.3.1.1(A)(e)

In



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Figure 16

Figure 16 .3.1.3.1.1(A)(f)

In


Figure 16

Figure 16 .3.1.3.1.1(A)(g)

In


Figure 16

Figure 16 .3.1.3.1.1(A)(h)

In

In -Rack Sprinkler Arrangement, Class I, II, III, or IV Commodities, Storage Height Over 25 ft (7.6 m) —Option 1.


314 of 579 5/19/2014 1:50 PM

Figure 16

Figure 16 .3.1.3.1.1(A)(i)

In


Figure 16

Figure 16 .3.1.3.1.1(A)(j)

In



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(B)

Figure 16.3.1.3.1.2(A)(a) through Figure 16.3.1.3.1.2(A)(c) shall be permitted to be used for theprotection of the single-row racks. Where a single-row rack is mixed with double-row racks an optionshown in Figures 16.3.1.3.1.1(A)(a) through 16.3.1.3.1.1(A)(j) shall be used.

16.3.1.3.1.2 *

Single-Row Racks.

(A)

In single-row racks with storage height over 25 ft (7.6 m) and a maximum of 10 ft (3.1 m) between the topof storage and the ceiling, sprinklers shall be installed in accordance with an option shown in Figure16.3.1.3.1.2(A)(a) through Figure 16.3.1.3.1.2(A)(e) shall be used .

Figure 16

Figure 16 .3.1.3.1.2(A)(a)

In

In -Rack Sprinkler Arrangement, Class I, II, III, or IV Commodities, Single-Row Racks, Storage HeightOver 25 ft (7.6 m) — Option 1.

Figure 16

Figure 16 .3.1.3.1.2(A)(b)

In

In -Rack Sprinkler Arrangement, Class I, II, or III Commodities, Single-Row Racks, Storage Height Over 25ft (7.6 m) — Option 1.


316 of 579 5/19/2014 1:50 PM

Figure 16

Figure 16 .3.1.3.1.2(A)(c)

In

In -Rack Sprinkler Arrangement, Class I, II, or III Commodities, Single-Row Racks, Storage Height Over 25ft (7.6 m) — Option 2.

Figure 16

Figure 16 .3.1.3.1.2(A)(d)

In



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Figure 16

Figure 16 .3.1.3.1.2(A)(e)

In


(B)

In single-row racks, where figures show in-rack sprinklers in transverse flue spaces centered betweenthe rack faces, it shall be permitted to position these in-rack sprinklers in the transverse flue at any point


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between the load faces.

16.3.1. 3 4 .1.3 *

In-Rack Sprinkler Location — Multiple-Row Racks for Rack Storage of Class I Through Class IVCommodities Stored Over 25 ft (7.6 m) in Height Protected with Control Mode Density/Area Sprinklers atCeiling.

(A)

In multiple-row racks with a maximum of 10 ft (3.1 m) between the top of storage and the ceiling,protection shall be in accordance with Table 16.3.1.2 and in-rack sprinklers shall be installed asindicated in Figure 16.3.1. 3 4 .1.3(A)(a) through Figure 16.3.1. 3 4 .1.3(A)(c) .

Figure 16

Figure 16 .3.1. 3 4 .1.3(A)(a)

In

In -Rack Sprinkler Arrangement, Class I Commodities, Multiple-Row Racks, Storage Height Over 25 ft (7.6m).

Figure 16

Figure 16 .3.1. 3 4 .1.3(A)(b)

In

In -Rack Sprinkler Arrangement, Class I, II, or III Commodities, Multiple-Row Racks, Storage Height Over25 ft (7.6 m).

Figure 16


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Figure 16 .3.1. 3 4 .1.3(A)(c)

In

In -Rack Sprinkler Arrangement, Class I, II, III, or IV Commodities, Multiple-Row Racks, Storage HeightOver 25 ft (7.6 m).

(B)

The highest level of in-rack sprinklers shall be not more than 10 ft (3.1 m) below maximum storage heightfor Class I, Class II, or Class III commodities or 5 ft (1.5 m) below the top of storage for Class IVcommodities.

16.3.1. 3 4 .2

In-Rack Sprinkler Spacing for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft(7.6 m) in Height Protected with Control Mode Density/Area Sprinklers at Ceiling .

16.3.1. 3 4 .2.1

In-Rack Sprinkler Spacing.

In-rack

sprinklers

s S prinklers shall be staggered horizontally and vertically where installed in accordance with Table16.3.1.1 , Figure 16.3.1.3.1.1(A)(a) through Figure 16.3.1.3.1.1(A)(j) , and Figure 16.3.1.3.1.2(A)(a)through Figure 16.3.1.3.1.2(A)(e) .

16.3.1. 3 4 .2.2

Double Row Racks

In-rack

sprinklers

s prinklers for storage higher than 25 ft (7.6 m) in double-row racks shall be spaced horizontally andlocated in the horizontal space nearest the vertical intervals specified in Table 16.3.1.1 and Figure16.3.1.3.1.1(A)(a) through Figure 16.3.1.3.1.1(A)(j) .

16.3.1.

3

4 .2.3

In-Rack Sprinkler Spacing. Multiple Row Racks


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Maximum horizontal spacing of sprinklers in multiple-row racks with storage higher than 25 ft (7.6 m)shall be in accordance with Figure 16.3.1.3.1.3(A)(a) through Figure 16.3.1.3.1.3(A)(c) .

16.3.1.3.2.4 *


(A)


(B)


16.3.1. 3 4 .3

In-Rack Sprinkler Water Demand for Rack Storage of Class I Through Class IV Commodities Stored Over25 ft (7.6 m) in Height Protected with Control Mode Density/Area Sprinklers at the Ceiling.






16.3.1. 3 4 .3.1

In-Rack Sprinkler Discharge for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft(7.6 m) in Height Protected with Control Mode Density/Area Sprinklers at the Ceiling.

Sprinklers in racks shall discharge at a rate not less than 30 gpm (113.6 L/min) for all classes ofcommodities.

16.3.2

Control Mode Specific Application ( CMSA ) Sprinklers for Rack Storage of Class I Through Class IVCommodities Stored Over 25 ft (7.6 m) in Height.

16.3.2.1

Protection of single-, double-, and multiple-row rack storage Class I through Class IV commodities shallbe in accordance with Table 16.3.2.1 .

Table 16

Table 16 .3.2.

1 CMSA


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1 CMSA Sprinkler Design Criteria for Rack Storage of Class I Through Class IV Commodities Stored Over25 ft (7.6 m) in Height (Encapsulated and Nonencapsulated)

StorageArrangement

CommodityClass

MaximumStorage Height

MaximumCeiling/Roof Height

K-Factor/

.

OrientationType of

System

Number ofDesign

Sprinklers


ft m ft m psi bar

Single-, double-, andmultiple-row racks (noopen-top containers)

Class I or II 30 9.1 35 10.611.2(160)

UprightWet 20

+


Dry 30

+



+


Dry 30

+


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19.6 (280) Pendent Wet 15 25 1.7

35 10.6 40 12.1

11.2 (160) Upright Dry* 36 55 3.8

16.8 (240) Upright Dry* 36 22 1.5

19.6 (280) Pendent Wet 15 30 2.1

Class III or IV30 9.1 35 10.6 19.6 (280) Pendent Wet 15 25 1.7

35 10.6 40 12.1 19.6 (280) Pendent Wet 15 30 2.1

*High temperature–rated sprinklers shall be used. Dry system water delivery shall be determined inaccordance with 7.2.3.6 with a maximum time of water delivery of 30 seconds with four sprinklers initiallyopen.

16.3.2.1.1

Protection of solid shelf racks with CMSA sprinklers at the ceiling shall be permitted where in-racksprinklers are installed in accordance with 16.1.6 . In-rack sprinklers shall be installed in every level belowthe highest solid shelf.

16.3.2.2

Where in-rack sprinklers are required by Table 16.3.2.1 , in-rack sprinkler spacing, design pressure, andhydraulic calculation criteria shall be in accordance with the requirements of 16.3.2.7 as applicable forthe commodity.

16.3.2.3


16.3.2. 3 4

Open Wood Joist Construction.

16.3.2. 3 4 .1


16.3.2. 3 4 .2


16.3.2. 4 5

Preaction Systems.

For the purpose of using Table 16.3.2.1 , preaction systems shall be classified as dry pipe systems.


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16.3.2.6

Building steel shall not require special protection where Table 16.3.2.1 are applied as appropriate for thestorage configuration.

16.3.2. 5 7

In-Rack Sprinklers for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft (7.6 m)in Height Protected with CMSA Sprinklers at the Ceiling.

16.3.2. 5 7 .1

Where in-rack sprinklers are required by Table 16.3.2.1 in-rack sprinklers they shall be installed at thefirst tier level at or above one-half of the storage height.

16.3.2. 5 7.2


16.3.2.7.3


16.3.2. 5.2 7.4


16.3.2.7.5


16.3.2.7.6


16.3.2. 5.3 7.7

In-Rack Sprinkler Water Demand.


16.3.2. 5.4 7.8

In-Rack Sprinkler Discharge Pressure.

Sprinklers in racks shall discharge at not less than 15 psi (1 bar) for all classes of commodities . (SeeSection C.19 .)

16.3.3 *


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Early Suppression Fast-Response (ESFR)

Sprinklers

Sprinkler Protection s for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft (7.6m) in Height.

16.3.3.1

Protection of single-, double-, and multiple-row rack storage of Class I through Class IV commoditiesshall be in accordance with Table 16.3.3.1 .

Table 16

Table 16 .3.3.

1 ESFR

1 ESFR Sprinkler Protection of Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft(7.6 m) in Height

StorageArrangement Commodity Maximum

StorageHeight

MaximumCeiling/

RoofHeight



In-RackSprinkler

Requirements A

(hours)ft m ft m psi bar gpm L/min

Single-, double-, andmultiple-row rack (noopen-top containers)

Class I, II, III, or IV,encapsulated ornonencapsulated

30 9.1 35 10.714.0

.


250 946 1

16.8 (240)Upright/

.

pendent52 3.6 No

22.4

.


25.2 (360) Pendent 20 1.4 No

40 12.2

16.8 (240) Pendent 52 3.6 No

22.4

.


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25.2 (360) Pendent 25 1.7 No

45 13.7

14.0 (200) Pendent 90 6.2 Yes

16.8 (240) Pendent 63 4.3 Yes

22.4

.


25.2 (360) Pendent 40 2.8 No

35 10.7 40 12.2

16.8 (240) Pendent 52 3.6 No

22.4

.


25.2 (360) Pendent 25 1.7 No

45 13.7

14.0 (200) Pendent 90 6.2 Yes

16.8 (240) Pendent 63 4.3 Yes

22.4

.


25.2 (360) Pendent 40 2.8 No

40 12.2 45 13.7

16.8 (240) Pendent 63 4.3 Yes

22.4

.


25.2 (360) Pendent 40 2.8 No

16.3.3.2



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(1) Rack storage involving solid shelves, except for situations complying with 16.3.3.2.1


16.3.3.2 .1

Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permitted where in-racksprinklers are installed in accordance with 16.1.6 . In-rack sprinklers shall be installed in every level belowthe highest solid shelf.

16.3.3.3

ESFR sprinkler systems shall be designed such that the minimum operating pressure is not less than thatindicated in Table 16.3.3.1 for type of storage, commodity, storage height, and building height involved .

16.3.3.4


16.3.3. 3 5

Where required by Table 16.3.3.1 , one level of K-8.0 (115) or K-11.2 (160) quick-response, ordinary-temperature in-rack sprinklers shall be installed at the tier level closest to but not exceeding one-half of themaximum storage height.

16.3.3. 3 5 .1

In-rack sprinkler hydraulic design criteria shall be the most hydraulically remote eight sprinklers at 60 gpm(227 L/min).

16.3.3.5.2


16.3.3. 3.2 5.3

Horizontal spacing shall not be permitted to exceed 5 ft (1.5 m) intervals.

16.3.3. 3.3 5.4


16.3.3.5.5


16.3.3.5.6


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16.3.3.5.7


16.3.4

Special Design for Rack Storage of Class I Through Class IV Commodities Stored Over 25 ft (7.6 m) inHeight.

16.3.4.1

Where high-expansion foam systems are used for storage over 25 ft (7.6 m) high up to and including 35 ft(10.7 m) high, they shall be used in combination with ceiling sprinklers.

16.3.4.2

The maximum submergence time for the high-expansion foam shall be 5 minutes for Class I, Class II, orClass III commodities and 4 minutes for Class IV commodities.


Submitted on behalf of the SSD Redundancy Task Group. These changes are considered editorial and include consolidation, and deletion of redundant/repeated text and rearrangement of the text to promote consistency with the other storage chapters.










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16.3.2.1.1







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16.3.3.2.1 ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unlessthe solid shelf racks are protected with in-rack sprinklers in accordance with 16.1.6.







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Public Comment No. 94-NFPA 13-2014 [ Section No. 16.3.3.2 [Excluding any

Sub-Sections] ]


(1)

(2) Rack storage involving

solid shelves, except for situations complying with 16.3.3.2.1



FR-175 deleted all references to “without solid shelves” and used “open rack” in its place. Two sections were missed in FR-175. This restriction is also stated in 8.4.6.1.1 and the redundancy is not needed. The issue of how to address solid shelving is addressed in a separate comment. It should be noted that this format is used in only two of the four applicable locations that prompts a question on needed consistency. Whether we continue to refer to these sections as open rack is also addressed in a separate comment (PC-80) in response to Correlating Comment Note 4.

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16.3.3.2.1

Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permitted where in-rack sprinklersare installed in accordance with 16.1.6. In-rack sprinklers shall be installed in every level below the highestsolid shelf or horizontal barrier .






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17.1.2.8 Scheme A Protection of CommoditiesThe protection of Class I, II, III, IV or Group A plastic commodities requiring a greater level ofprotection than is available from the overhead sprinkler system shall be permitted to beprotected in accordance with 17.1.2.8.1 through 17.1.2.8.9.

17.1.2.8.1 Where the storage rack will not be solely dedicated to the storage of commoditiesrequiring a greater level of protection that is available from the overhead sprinkler system theneither of the following shall apply: (1) extend the protection prescribed by 17.1.2.8 horizontallyone pallet load in all directions beyond the commodity storage area requiring the higher level ofprotection, or (2) install a vertical barrier to segregate the commodities requiring the higher levelof protection from any adjacent commodities.

17.1.2.8.2 Commodities that can be protected by the ceiling-level sprinkler system shall bepermitted to be stored vertically above as well as horizontally adjacent to the portions of thestorage rack equipped prescribed by 17.1.2.8.

17.1.2.8.3 Horizontal BarriersHorizontal barriers shall be installed at every tier level of the dedicated storage rack where therack is equipped with solid shelves. Where the dedicated storage rack is open-frame, horizontalbarriers shall be installed at vertical increments not exceeding 12 ft (3.6 m). The barriers shallspan horizontally so that all flue spaces within the rack bay are covered. A maximum 3 in. (75 mm)wide gap shall be permitted at rack uprights.

17.1.2.8.3.1 The solid barrier shall be installed on a horizontal plane within a rack, beneath whichin-rack sprinklers shall be installed. The barrier shall be constructed of minimum 22 ga (0.7 mm)sheet metal or minimum 3/8 in. (10 mm) plywood. The barrier shall extend to both ends and bothaisle faces of the racks covering up both the longitudinal and transverse flue spaces of the rackbays in which they are installed. The barrier shall be fitted to within 3 in. (75 mm) of any verticalrack member or other equipment that would create an opening, such as vertical in-rack sprinklerpipe drops.

17.1.2.8.4 In-Rack SprinklersMinimum K8.0 (K115), quick-response sprinklers (ceiling-level or in-rack) shall be installedbeneath each horizontal barrier. The deflector of the sprinkler shall be located as close to theunderside of the horizontal barrier as possible.

17.1.2.8.4.1 For single-row racks, sprinklers shall be installed at each rack upright as well as ateach rack mid-bay as shown in Figure 17.1.2.8.4.1 The maximum linear spacing betweensprinklers shall not exceed 5 ft (1.5 m).

17.1.2.8.4.2 For double-row racks, sprinklers shall be installed at each rack upright within thelongitudinal flue space as well as at the face of the rack and at the mid-bay face of each rack bayas shown in Figure 17.1.2.8.4.2. The maximum linear spacing between sprinklers shall not exceed5 ft (1.5 m) at the rack face and 10 ft (3.0 m) within the longitudinal flue space.

17.1.2.8.4.3 For multiple-row racks, an alternating sprinkler arrangement shall be installed withinadjacent transverse flue spaces as shown in Figure 17.1.2.8.4.3 with sprinklers at the face of eachflue space. The maximum linear spacing between sprinklers at the face and each alternating bayshall not exceed 5 ft (1.5 m) and shall not exceed 10 ft (3.0 m) between sprinklers at every otherbay.

17.1.2.8.5 The design of the an in-rack sprinkler system shall be based on a minimum flow of 60gpm (230 L/min) from the most remote 6 sprinklers for single-row racks or the most remote 8sprinklers for both double-row and multiple-row racks.

17.1.2.8.6 A hose demand allowance of 500 gpm (1,900 L/min) shall be included in the hydraulicdesign.

17.1.2.8.7 The demand duration shall provide for a minimum of 2 hours.

17.1.2.8.8 The in-rack sprinkler demand shall not be required to be hydraulically balanced with theceiling-level sprinkler system..17.1.2.8.9 Ceiling Sprinkler SystemThe ceiling-level sprinkler system shall be designed based on the highest commodity hazard notprotected by the criteria prescribed by 17.1.2.8.



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The proposed Scheme A protection criteria was introduced during last cycle for certain solid shelf arrangements. This protection Scheme was originally developed and tested for protection of Class IIIB combustible liquids in plastic containers for NFPA 30 so as to allow of protection of pockets of such stored materials with the use of solid barriers and enhanced in-rack sprinkler arrays that provided a direct application of water within the storage array. Test references to support such criteria for Class IIIB liquids is provided by NFPA 30, Table D.2(e) 1 as P-21 to P-31 from the Directory of Fire Tests Involving Storage of Flammable and Combustible Liquids in Containers, 3rd edition. The adequacy of such protection for the higher hazard Class IIIB combustible liquids provides justification for protection of Class I, II, III, IV Commodities or Group A plastics.

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Public Input No. 368-NFPA 13-2013 [New Section after 17.1.2.7]




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Reconsider the proposal and return the text of 17.1.4.1 to that of the 2013 edition of NFPA 13, asfollows:

17.1.4.1 *

Where fireproofing of building columns is not provided and storage heights are in excess of 15 ft (4.6 m),protection of building columns located wholly or partially within the rack footprint inclusive of flue space orwithin 12 in. (305 mm) of the footprint structure or vertical rack members supporting the building shall beprotected in accordance with one of the following:



(3) Provision of ceiling sprinkler density for a minimum of 2000 ft2 (186 m2) with ordinary temperature– orhigh temperature–rated sprinklers as shown in Table 17.1.4.1 for storage heights above 15 ft (4.6 m)up to and including 20 ft (6.1 m)




Aisle Width

4 ft (1.2 m) 8 ft (2.4 m)

gpm/ft 2 (L/min)/m 2 gpm/ft 2 (L/min)/m 2

Group A plastics 0.68 27.7 0.57 23.2





The proposed text, speaking of “a rack footprint …” should not be adopted. A formal Interpretation FI 75-4 was written to the 1975 edition of NFPA 231C which clarified that the requirement for column sprinklers is not applicable when columns are located adjacent to the racks, whether at the building walls or otherwise. This interpretation has never been overturned and there has been no field experience or test data brought forward to discredit its conclusion. Therefore, there is no justification for inserting this new “within 12 inches of the footprint” criteria. The existing text of “within the rack structure” should remain in effect – as it has for almost 40 years.

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17.1.5.5

Design criteria for combined ceiling and in-rack CMDA, CMSA, and ESFR sprinklers shall be used for thestorage configurations in any applicable option for open racks combined with the in-rack sprinklersinstalled in accordance with 17.1.5.1 and 17.1.5.2.



Due to the historical perspective that the General section on solid shelf racks applies only to spray sprinkler, identifying all sprinkler types corrects that misunderstanding. It also emphasizes that this section is indeed applicable to ESFR and CMSA system as already identified in 8.4.6.1.1. A new comment (PC-81) has been submitted to add it to 8.4.7.

PI-84 attempted to insert this information but rejected on the basis that some tables do not provide combined options. Since this was existing text I left it in the PI but agree this is a concern. As such, the reference to combined has been removed.




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17.2.1.1.1

For storage 5 ft (1.5 m) or less in height that does not meet the definition of Miscellaneous Storage that ison solid shelf racks, in-rack sprinklers shall be provided in accordance with 17.1.5 , and ceiling sprinklerprotection shall be provided in accordance with Chapter 13.


No substantiation has been given, including full scale testing and/or fire history, as to why the existing language needs to be changed to require in-rack sprinklers for Group A Plastic Commodities storing products up to [and including] 5' in height. Additionally no substantiation is given, including full scale testing and/or fire history, as to why miscellaneous storage of Group A Plastic Commodities storing products up to [and including] 5' in height are exempted out of this proposed requirement. Additionally it is illogical to require in-rack sprinklers fro 5' high storage when most loads are 4-5 ft high.

Additionally the location of this section is such that it will be missed by many since most users would use Chapter 13 directly.

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Submittal Date: Sat May 17 00:49:00 EDT 2014


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Sub-Sections] ]


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Protection of single-, double-, and multiple-row rack storage for unexpanded Group A plastic commoditiesshall be in accordance with Table 17.2.2.1.

Table 17.2.2.1 CMSA Sprinkler Design Criteria for Single-, Double-, and Multiple-Row Racks of Group APlastic Commodities Stored Up and Including 25 ft (7.6 m) in Height

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

Orientation

Type ofSystem

Numberof Design

Sprinklers


ft m ft m psi bar


Cartonedunexpanded

plastics

20 6.1

25 7.6

11.2 (160)Upright

Wet 15 50 3.5

16.8 (240)Upright

Wet 15 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

30 9.1

11.2 (160)Upright

Wet 30 50 3.5

Wet 20 75 5.2

16.8 (240)Upright

Wet 15* 22 1.5

19.6 (280)Pendent

Wet 15 16 1.1

25 7.6 30 9.111.2 (160)Upright

Wet 15

+


16.8 (240) Upright Wet 15* 22 1.5

19.6 (280) Pendent Wet 15 16 1.1

25 7.6 35 10.6 11.2 (160) Upright Wet 30

+


Wet 20

+



+


Wet 20

+


19.6 (280) Pendent Wet 15 25 1.7

Exposed unexpanded plastics

20 6.1 25 7.611.2 (160) Upright Wet 15 50 3.5

16.8 (240) Upright Wet 15 22 1.5

20 6.1 30 9.111.2 (160) Upright

Wet 30 50 3.5

Wet 20 75 5.2

16.8 (240) Upright Wet 15* 22 1.5

25 7.6 30 9.1 11.2 (160) Upright Wet 15

+



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16.8 (240) Upright Wet 15* 22 1.5

25 7.6 35 10.6 11.2 (160) Upright Wet 30

+


Wet 20

+



+


Wet 20

+


StorageArrangement

CommodityClass


MaximumCeiling/Roof

Height

K-Factor/

Orientation

Type ofSystem

Numberof Design

Sprinklers


ft m ft m psi bar

ExposedExpanded

4.5 1.4 8 2.4

11.2 (160)Upright/

Pendent

Wet 20 16 1.1

11.2 (160)Upright

Dry 25 16 1.1

16.8 (240)Upright

Wet 20 7 0.5

Dry 25 7 0.5

19.6 (280)Pendent

Wet 20 16 1.1

19.6 (280)Upright

Dry 25 30 2.1

5 1.5 10 3.0

11.2 (160)Upright/

Pendent

Wet 20 30 2.1

11.2 (160)Upright

Dry 25 30 2.1

16.8 (240)Upright

Wet 20 13 0.9

Dry 25 13 0.9

19.6 (280)Pendent

Wet 20 16 1.1

19.6 (280)Upright

Dry 25 30 2.1

7 2.1 12 3.6

11.2 (160)Upright/

Pendent

Wet 20 50 3.5


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11.2 (160)Upright

Dry 25 50 3.5

16.8 (240)Upright

Wet 20 25 1.7

Dry 25 25 1.7

19.6 (280)Pendent

Wet 20 16 1.1

19.6 (280)Upright

Dry 25 30 2.1

10 3.0 15 4.5

11.2 (160)Upright/

Pendent

Wet 20 50 3.5

11.2 (160)Upright

Dry 35 50 3.5

16.8 (240)Upright

Wet 25 25 1.7

Dry 25 35 1.7

19.6 (280)Pendent

Wet 25 16 1.1

19.6 (280)Upright

Dry 35 30 2.1

*Minimum 8 ft (2.4 m) aisle.


This proposal integrates the current requirements for “uncartoned expanded plastics” from FM Global Property Loss Prevention Data Sheets 8-9, Table 11. Ceiling-Level Protection Guidelines for Uncartoned Expanded Plastic Commodities in Open-Frame Rack Storage Arrangements into the NFPA 13 standard format. This will provide permissible protection schema for Exposed Expanded plastic commodities within the NFPA 13 installation standard.

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17.2.2.1.1







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17.2.3* Early Suppression Fast-Response (ESFR) Sprinklers for Rack Storage of Group A PlasticCommodities Stored Up to and Including 25 ft (7.6 m) in Height.


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17.2.3.1


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Protection of single-, double-, and multiple-row rack storage of cartoned or exposed unexpandedGroup Aplastic and cartoned expanded Group A plastic shall be in accordance with Table 17.2.3.1.

Table 17.2.3.1 ESFR Protection of Rack Storage of Group A Plastic Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height



MaximumCeiling/Roof





Cartonedunexpanded

20 6.1

25 7.6 22.4


25.2


30 9.1

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No

22.4


25.2


35 10.7

14.0

(200)

Upright/

pendent75 5.2 No

16.8

(240)

Upright/

pendent52 3.6 No

22.4


25.2


40 12.2

16.8


22.4


25.2


45 13.7

14.0


16.8


22.4


25.2


25 7.6 30 9.114.0



349 of 579 5/19/2014 1:50 PM

16.8

(240)

Upright/

pendent35 2.4 No

22.4


25.2


32 9.8

14.0

(200)

Upright/

pendent60 4.1 No

16.8

(240)

Upright/

pendent42 2.9 No

35 10.7

14.0

(200)

Upright/

pendent75 5.2 No

16.8

(240)

Upright/

pendent52 3.6 No

22.4


25.2


40 12.2

16.8


22.4


25.2


45 13.7

14.0


16.8


22.4


25.2


Exposedunexpanded

20 6.1

25 7.6

14.0


16.8


30 9.1

14.0


16.8


35 10.714.0




MaximumCeiling/Roof



In-RackSprinkler



350 of 579 5/19/2014 1:50 PM



MaximumCeiling/Roof



In-RackSprinkler


16.8


40 12.216.8


45 13.7

14.0


16.8


25 7.6

30 9.1

14.0


16.8


32 9.8

14.0


16.8


35 10.7

14.0


16.8


40 12.2

16.8


22.4


25.2


45 13.7

14.0


16.8


Cartonedexpanded

20 6.1

25 7.6

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No

30 9.1

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No

25 7.6 30 9.1

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No


351 of 579 5/19/2014 1:50 PM



MaximumCeiling/Roof



In-RackSprinkler


32 9.8

14.0


16.8

(240)

Upright/

pendent42 2.9 No

17.2.3.1.1


(1) Rack storage involving solid shelves, except for the situation permitted by 17.2.3.1.2


17.2.3.1.2

Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permitted where in-racksprinklers are installed in accordance with 17.1.5. In-rack sprinklers shall be installed in every level belowthe highest solid shelf.

17.2.3.2


17.2.3.3


17.2.3.4 In-Rack Sprinkler Requirements Where ESFR Sprinklers Are Used at Ceiling.

17.2.3.4.1

Where required by Table 17.2.3.1, in-rack sprinklers shall be installed at the first tier level at or aboveone-half of the storage height.

17.2.3.4.2

In-rack sprinklers shall be K-8.0 (115) or K-11.2 (160) quick-response, ordinary-temperature sprinklers.

17.2.3.4.3


17.2.3.4.4


17.2.3.4.5*


17.2.3.4.6


17.2.3.4.7


17.2.3.4.8


17.2.3.4.9

Each of the in-rack sprinklers described in 17.2.3.4.8 shall discharge at a minimum of 60 gpm (227L/min).


CC NOTE: The following CC Note No. 13 appeared in the First Draft Report as Global First Revision No. 181, 177, and 175,


352 of 579 5/19/2014 1:50 PM

The TC should review the deletion of the K14 and K16.8 for the 25 ft ceiling height, which should not have been made to this table.

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353 of 579 5/19/2014 1:50 PM


Sub-Sections] ]


354 of 579 5/19/2014 1:50 PM

Protection of single-, double-, and multiple-row rack storage of cartoned or exposed unexpandedGroup Aplastic and cartoned expanded Group A plastic shall be in accordance with Table 17.2.3.1.

Table 17.2.3.1 ESFR Protection of Rack Storage of Group A Plastic Commodities Stored Up to andIncluding 25 ft (7.6 m) in Height



MaximumCeiling/Roof





Cartonedunexpanded

20 6.1

25 7.6 22.4


25.2


30 9.1

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No

22.4


25.2


35 10.7

14.0

(200)

Upright/

pendent75 5.2 No

16.8

(240)

Upright/

pendent52 3.6 No

22.4


25.2


40 12.2

16.8


22.4


25.2


45 13.7

14.0


16.8


22.4


25.2



355 of 579 5/19/2014 1:50 PM



MaximumCeiling/Roof



In-RackSprinkler


25 7.6

30 9.1

14.0


16.8

(240)

Upright/

pendent35 2.4 No

22.4


25.2


32 9.8

14.0

(200)

Upright/

pendent60 4.1 No

16.8

(240)

Upright/

pendent42 2.9 No

35 10.7

14.0

(200)

Upright/

pendent75 5.2 No

16.8

(240)

Upright/

pendent52 3.6 No

22.4


25.2


40 12.2

16.8


22.4


25.2


45 13.7

14.0


16.8


22.4


25.2


Exposedunexpanded

20 6.1

25 7.6

14.0


16.8


30 9.1

14.0


16.8



356 of 579 5/19/2014 1:50 PM



MaximumCeiling/Roof



In-RackSprinkler


35 10.7

14.0


16.8


40 12.216.8


45 13.7

14.0


16.8


25 7.6

30 9.1

14.0


16.8


32 9.8

14.0


16.8


35 10.7

14.0


16.8


40 12.2

16.8


22.4


25.2


45 13.7

14.0


16.8


Cartonedexpanded

20 6.1

25 7.6

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No

30 9.1

14.0

(200)

Upright/

pendent50 3.4 No

16.8

(240)

Upright/

pendent35 2.4 No

25 7.6 30 9.114.0

(200)

Upright/

pendent50 3.4 No


357 of 579 5/19/2014 1:50 PM



MaximumCeiling/Roof



In-RackSprinkler


16.8

(240)

Upright/

pendent35 2.4 No

32 9.8

14.0


16.8

(240)

Upright/

pendent42 2.9 No

StorageArrangement

Commodity


MaximumCeiling/Roof


Orientation

ft m ft m

ExposedExpanded

15 4.6 20 6.125.2

(360)Pendent

20 6.1 25 7.5

14.0(200)

Pendent

16.8(240)

Pendent

22.4(320)

Pendent

25.2(360)

Pendent

25 7.5 30 9.0

14.0(200)

Pendent

16.8(240)

Pendent

22.4(320)

Pendent

25.2(360)

Pendent

*Some manufacturers have a special listing for lower pressure. See manufacturer’s literature for moreinformation.


This proposal integrates the current requirements for “uncartoned expanded plastics” from FM Global Property Loss Prevention Data Sheets 8-9, Table 11. Ceiling-Level Protection Guidelines for Uncartoned Expanded Plastic Commodities in Open-Frame Rack Storage Arrangements into the NFPA 13 standard format. This will provide permissible protection schema for Exposed Expanded plastic commodities within the NFPA 13 installation standard.



Public Comment No. 301-NFPA 13-2014 [Section No. 17.2.2.1 [Excluding anySub-Sections]]


358 of 579 5/19/2014 1:50 PM

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359 of 579 5/19/2014 1:50 PM

Public Comment No. 169-NFPA 13-2014 [ New Section after 17.2.3.1.1 ]








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360 of 579 5/19/2014 1:50 PM


17.2.3.1.1


(1) Rack storage involving solid shelves, except for the situation as permitted by 17.2.3.1.2



Minor editorial language.

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First Correlating Revision No. 12-NFPA 13-2013 [Section No. 17.2.3.1.1]




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361 of 579 5/19/2014 1:50 PM


17.2.3.1.1


(1)

(2) Rack storage involving

solid shelves, except for the situation permitted by 17.2.3.1.2



FR-175 deleted all references to “without solid shelves” and used “open rack” in its place. Two sections were missed in FR-175. This restriction is also stated in 8.4.6.1.1 and the redundancy is not needed. The issue of how to address solid shelving is addressed in a separate comment. It should be noted that this format is used in only two of the four applicable locations that prompts a question on needed consistency. Whether we continue to refer to these sections as open rack is also addressed in a separate comment (PC-80) in response to Correlating Comment Note 4.



Public Comment No. 94-NFPA 13-2014 [Section No. 16.3.3.2 [Excluding anySub-Sections]]

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362 of 579 5/19/2014 1:50 PM


17.2.3.1.2

Protection of solid shelf racks with ESFR sprinklers at the ceiling shall be permitted where in-rack sprinklersare installed in accordance with 17.1.5. In-rack sprinklers shall be installed in every level below the highestsolid shelf or horizontal barrier .






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363 of 579 5/19/2014 1:50 PM


17.2.4.1.1*

Slatted rack shelves shall be considered equivalent to solid rack shelves where the shelving is notconsidered to open rack shelving or where the requirements of 17.2.4.1 are not met. (See SectionC.20 .)


The redundancy task group initiated this comment.

The title to 17.2 emphasizes that it provides criteria for open rack assemblies. The use of double negatives in 17.2.4.1.1 (it is NOT considered open when the requirements are NOT met) confuses the issue that this section is providing criteria for when slatted shelves are consider to be equivalent to an open rack.




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364 of 579 5/19/2014 1:50 PM



365 of 579 5/19/2014 1:50 PM

Revise Figure 17.3.1.8 (a), Figure 17.3.1.8 (b), Figure 17.3.1.8 (c) and Figure 17.3.1.8 (e) to delete thelongitudinal flue spaces, as per the original PI.

17.3.1.8 *


366 of 579 5/19/2014 1:50 PM

For protection of storage of exposed unexpanded Group A plastics, whether encapsulated ornonencapsulated, or cartoned Group A plastics, expanded or unexpanded, whether encapsulated ornonencapsulated, on multiple-row racks, in-rack sprinklers shall be arranged in accordance with one of theoptions in Figure 17.3.1.8(a) through Figure 17.3.1.8(f) . The highest level of in-rack sprinklers shall be notmore than 10 ft (3.1 m) below the top of storage.

Figure 17.3.1.8(a) In-Rack Sprinkler Arrangement, Cartoned Group A Plastic and ExposedNonexpanded Group A Plastic, Multiple-Row Racks, Storage Height Over 25 ft (7.6 m) — Option 1[10 ft (3.1 m) Maximum Spacing].

Figure 17.3.1.8(b) In-Rack Sprinkler Arrangement, Cartoned Group A Plastic and ExposedNonexpanded Group A Plastic, Multiple-Row Racks, Storage Height Over 25 ft (7.6 m) — Option 2[10 ft (3.1 m) Maximum Spacing].

Figure 17.3.1.8(c) In-Rack Sprinkler Arrangement, Cartoned Group A Plastic and ExposedNonexpanded Group A Plastic, Multiple-Row Racks, Storage Height Over 25 ft (7.6 m) — Option 1[5 ft (1.5 m) Maximum Spacing].

Figure 17.3.1.8(d) In-Rack Sprinkler Arrangement, Cartoned Group A Plastic and UncartonedUnexpanded Group A Plastic, Multiple-Row Racks, Storage Height Over 25 ft (7.6 m) — Option 2 [5ft (1.5 m) Maximum Spacing].

Figure 17.3.1.8(e) In-Rack Sprinkler Arrangement, Cartoned Group A Plastic and ExposedNonexpanded Group A Plastic, Multiple-Row Racks, Storage Height Over 25 ft (7.6 m) — Option 3[5 ft (1.5 m) Maximum Spacing].


367 of 579 5/19/2014 1:50 PM

Figure 17.3.1.8(f) In-Rack Sprinkler Arrangement, Cartoned Group A Plastic and ExposedNonexpanded Group A Plastic, Multiple-Row Racks, Storage Height Over 25 ft (7.6 m) — Option 4[5 ft (1.5 m) Maximum Spacing].





As per the Committee Statement, the longitudinal flues were to be eliminated to create consistency between the figures in the section. However, the First Draft Report does not reflect the revision.

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17.3.2.1.1







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370 of 579 5/19/2014 1:50 PM









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First Revision No. 224-NFPA 13-2013 [Section No. 17.3.3.1.1]




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371 of 579 5/19/2014 1:50 PM


Revise Table 17.3.3.1 in the line for cartoned, unexpanded plastics, 35 ft storage, 45 ft ceiling height, tochange the metric equivalent for a K 25.2 sprinkler from 320 to 360.

17.3.3.1


372 of 579 5/19/2014 1:50 PM

Protection of single-, double-, and multiple-row rack storage of cartoned or exposed, unexpandedGroup Aplastic shall be in accordance with Table 17.3.3.1.

Table 17.3.3.1 ESFR Protection of Rack Storage of Group A Plastic Commodities Stored Over 25 ft (7.6m) in Height



MaximumCeiling/Roof



In-RackSprinkler



Cartonedunexpanded

30 9.1

35 10.7

14.0

(200)

Upright/

pendent75 5.2 No

16.8

(240)

Upright/

pendent52 3.6 No

22.4


25.2


40 12.2

16.8


22.4


25.2


45 13.7

14.0


16.8


22.4


25.2


35 10.7

40 12.2

16.8


25.2


45 13.7

14.0


16.8


22.4


25.2


40 12.2 45 13.7

14.0


16.8



373 of 579 5/19/2014 1:50 PM

22.4


25.2


Exposedunexpanded

30 9.1

35 10.7

14.0


16.8


40 12.2

16.8


22.4


25.2


45 13.7

14.0


16.8


35 10.7

40 12.2

16.8


22.4


25.2


45 13.7

14.0


16.8


40 12.2 45 13.7

14.0


16.8




MaximumCeiling/Roof



In-RackSprinkler


17.3.3.1.1

ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unless the solid shelf racksare protected with in-rack sprinklers in accordance with 17.1.5. Where solid shelves are used, in-racksprinklers shall be installed in every level below the highest solid shelf.

17.3.3.1.2

ESFR sprinklers shall not be permitted to protect storage with open-top containers.





374 of 579 5/19/2014 1:50 PM


Editorial – This correction seems to have been missed when the other corrections were applied.

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Public Input No. 274-NFPA 13-2013 [Section No. 17.3.3.1 [Excluding any Sub-Sections]]




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375 of 579 5/19/2014 1:50 PM


17.3.3.1.1

Protection of solid shelf racks with ESFR sprinklers at the ceiling shall not be permitted to protectstorage on solid shelf racks unless the solid shelf racks are protected with where in-rack sprinklers areinstalled in accordance with 17.1.5 . Where solid shelves are used, in In -rack sprinklers shall beinstalled in every level below the highest solid shelf or horizontal barrier .






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376 of 579 5/19/2014 1:50 PM


17.3.3.5 20.8 * Protection of Furniture classified as Exposed Expanded Group A Plastics. 17

20 . 3 8 . 3.5. 1

Protection of single-, double-, and multiple-row rack storage of exposed expanded Group A plastics shall bepermitted to be in accordance with 17 20 .3 8 .3.5. 2 through 17 20 .3 8 .3.5. 9.

17 20 . 3 8 . 3.5. 2

The maximum storage height shall be 35 ft (10.6 m).

17 20 . 3 8 .3 .5.3

The maximum ceiling height shall be 40 ft (12.2 m).

17 20 . 3 8 . 3.5. 4

Sprinklers shall be intermediate temperature–rated ESFR pendent sprinklers with a nominal K-factor ofK-25.2 (360).

17 20 . 3 8 . 3. 5 .5

The design area shall consist of the most hydraulically demanding area of 15 12 sprinklers consisting offive sprinklers on each of three branch lines.

17 20 . 3 8 . 3.5. 6

The minimum operating pressure shall be 60 psi (4.1 bar).

17 20 . 3 8 . 3.5. 7

The hose stream allowance shall be 250 gpm (950) and the water supply duration shall be 60 minutes.

17 20 . 3 8 . 3.5. 8

The minimum aisle width shall be 8 ft (2.4 m).

17 20 . 3 8 . 3.5. 9

The rack shall have a solid vertical barrier of 3 ⁄8 in. (9.5 mm) plywood or particleboard, 22 gauge sheetmetal, or equivalent, from face of rack to face of rack, spaced at a maximum 16.5 ft (5.0 m) interval.

17 20 . 3 8 . 3.5. 9.1

The vertical barrier shall extend from a maximum of 4 in. (102 mm) above the floor to the maximum storageheight.

17 20 . 3 8 . 3.5. 9.2

The plan area of storage between vertical barriers and aisles shall not exceed 124 ft2 (11.52 m2)

17 20 . 3 8 . 3.5. 9.3

The vertical barrier shall extend across the longitudinal flue.

17 20 . 3 8 . 3.5. 9.4

Commodity shall be permitted to extend a nominal 4 in. (102 mm) beyond the vertical barrier at the aisle.


Duplicating the new information on Exposed Expanded Plastic into Chapter 20 for furniture storage will give greater flexibility to add criteria specific to furniture storage in the future. Due to the nature of furniture storage vs. general storage this will be easier to handle the specifics of furniture without having to have multiple asterisks and notes defining this in Chapter 17.

Also, for furniture vs. the expanded plastic test commoddity, the 12 sprinkler demand is justified based on the testing and the conservative blocked flue arrangements during the test that opened 10 sprinklers.

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377 of 579 5/19/2014 1:50 PM

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378 of 579 5/19/2014 1:50 PM


17. 3 2 .3.5 * Protection of Exposed Expanded Group A Plastics.

17. 3 2 .3.5.1

Protection of single-, double-, and multiple-row rack storage of exposed expanded Group A plastics shall bepermitted to be in accordance with 17.3 2 .3.5.2 through 17.3 2 .3.5.9.

17. 3 2 .3.5.2

The maximum storage height shall be 35 be 25 ft (10 9 .6 1 m).

17. 3 2 .3.5.3

The maximum ceiling height shall be 40 ft (12.2 m).

17. 3 2 .3.5.4

Sprinklers shall be intermediate temperature–rated ESFR pendent sprinklers with a nominal K-factor ofK-25.2 (360).

17. 3 2 .3.5.5

The design area shall consist of the most hydraulically demanding area of 15 sprinklers consisting of fivesprinklers on each of three branch lines.

17. 3 2 .3.5.6

The minimum operating pressure shall be 60 psi (4.1 bar).

17. 3 2 .3.5.7

The hose stream allowance shall be 250 gpm (950) and the water supply duration shall be 60 minutes.

17. 3 2 .3.5.8

The minimum aisle width shall be 8 ft (2.4 m).

17. 3 2 .3.5.9

The rack shall have a solid vertical barrier of 3 ⁄8 in. (9.5 mm) plywood or particleboard, 22 gauge sheetmetal, or equivalent, from face of rack to face of rack, spaced at a maximum 16.5 ft (5.0 m) interval.

17. 3 2 .3.5.9.1

The vertical barrier shall extend from a maximum of 4 in. (102 mm) above the floor to the maximum storageheight.

17. 3 2 .3.5.9.2

The plan area of storage between vertical barriers and aisles shall not exceed 124 ft2 (11.52 m2)

17. 3 2 .3.5.9.3

The vertical barrier shall extend across the longitudinal flue.

17. 3 2 .3.5.9.4

Commodity shall be permitted to extend a nominal 4 in. (102 mm) beyond the vertical barrier at the aisle.


duplicate the protection for above 25 ft storage to 17.2 for storagr 25 ft or less.



Public Comment No. 101-NFPA 13-2014 [Section No. 17.3.3.5] expanded plastic protection

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First Revision No. 101-NFPA 13-2013 [Section No. 8.6.4.1.4.3]


Submitter Full Name: James Golinveaux


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380 of 579 5/19/2014 1:50 PM


18.3 Water Supplies.

Total water supplies shall be in accordance with the following options:

A minimum of not less than 750 gpm (2835 L/min) for hose streams in addition to that required forautomatic sprinklers and foam systems. Water supplies shall be capable of supplying the demand forsprinkler systems and hose streams for not less than 3 hours.

For on-floor storage up to and including 5 ft (1.5 m) in height, hose stream requirements shall be permittedto be 250 gpm (946 L/min) with a water supply duration of not less than 2 hours.

For ESFR and CMSA sprinkler systems approved for rubber tire storage, duration and hose allowanceshall be in accordance with Table 18.4(c) and Table 18.4(d) capable of providing flow for automa c

sprinklers, hose streams and foam systems (if provided) for the dura on required in Table 12.8.6 .


These additions to Table 12.8.6.1 consolidate water supply information from chapters 18 and 19 into a single source in the general requirements for storage chapter for clarity.



Public Comment No. 311-NFPA 13-2014 [Section No. 12.8.6 [Excluding any Sub-Sections]]

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382 of 579 5/19/2014 1:50 PM

18.4 * Ceiling Systems.


383 of 579 5/19/2014 1:50 PM

Sprinkler discharge and area of application shall be in accordance with one of the following:

(1) Table 18.4(a) or Table 18.4(b) for standard spray sprinklers

(2) Table 18.4(c) for CMSA sprinklers

(3) Table 18.4(d) for ESFR sprinklers

Table 18.4(a) Protection Criteria for Rubber Tire Storage Using Control Mode Density/Area Sprinklers

Piling Method

PileHeight

(ft)

Sprinkler Discharge

Density (gpm/ft 2 over

ft 2 )

(see Note 1)

Areas of Application (ft 2 )

(see Note 1)

OrdinaryTemperature

HighTemperature

(see Note 1)

(1) On-floor storage Up to 5 0.19 2000 2000

(a) Pyramid piles, on-sideOver 5 to12

0.30 2500 2500

(b) Other arrangements such thatno horizontal channels are formed(see Note 2)

Over 12to 18

0.60 Not allowed 2500

(2) On-floor storage Up to 5 0.19 2000 2000

Tires, on-treadOver 5 to12

0.30 2500 2500

(3) Palletized portable rackstorage

Up to 5 0.19 2000 2000

On-side or on-tread

Over 5 to20

See Table 18.4(b) — —

Over 20to 30

0.30 plus high-expansionfoam

3000 3000

(4) Palletized portable rackstorage, on-side

Up to 5 0.19 2000 2000

Over 5 to20

See Table 18.4(b) — —

Over 20to 25

0.60 and Not allowed 5000

0.90 (see Note 3) or Not allowed 3000

0.75 with 1-hourfire-resistive rating of roofand ceiling assembly

Not allowed 4000

(5) Open portable rack storage,on-side or on-tread

Up to 5 0.19 2000 2000

Over 5 to12

0.60 5000 3000

Over 12to 20




3000 3000

(6) Open portable rack storage,laced

Over 12to 20


0.90 (see notes 3 and 5) Not allowed 3000

(7) Single-, double-, andmultiple-row fixed rack storage onpallets, on-side, or on-treadwithout shelves

Up to 5 0.19 2000 2000

Over 5 to20

See Table 18.4(b) or 0.40plus one level in-racksprinklers or

3000 3000


3000 3000


384 of 579 5/19/2014 1:50 PM

Piling Method

PileHeight

(ft)

Sprinkler Discharge

Density (gpm/ft 2 over

ft 2 )

(see Note 1)

Areas of Application (ft 2 )

(see Note 1)

OrdinaryTemperature

HighTemperature

(see Note 1)

Over 20to 30


Not allowed 3000

(8) Single-, double-, andmultiple-row fixed rack storagewithout pallets or shelves, on-sideor on-tread

Up to 5 0.19 2000 2000

Over 5 to12

0.60 5000 3000

0.40 plus one level in-racksprinklers

3000 3000

Over 12to 20



0.40 plus one level in-racksprinklers or

3000 3000


3000 3000

Over 20to 30


Not allowed 3000

For SI units, 1 ft = 0.3048 m; 1 ft2 = 0.0929 m2; 1 gpm/ft2 = 40.746 mm/min.

Notes:

(1) Sprinkler discharge densities and areas of application are based on a maximum clearance to ceiling of10 ft (3.1 m) with the maximum height of storage anticipated.

(2) Laced tires on-floor, vertical stacking on-side (typical truck tires), and off-road tires. Laced tires are notstored to a significant height by this method due to the damage inflicted on the tire (i.e., bead).

(3) Water supply shall fulfill both requirements.

(4) Shelf storage of rubber tires shall be protected as solid rack shelving.

(5) This protection scheme is for use with K-16.8 (240) or larger control mode sprinklers only. Maximumclearance to ceiling can be increased to 14 ft (4.25 m) with this scheme.

Table 18.4(b) Control Mode Density/Area Sprinklers System Density (gpm/ft2 over ft2) for PalletizedPortable Rack Storage and Fixed Rack Storage of Rubber Tires with Pallets Over 5 ft (1.5 m) to 20 ft (6.1m) in Height

Storage Height

(ft)

Sprinkler Temperature

High Temperature Ordinary Temperature

>5 to 10 0.32/2000 0.32/2000

>10 to 12 0.39/2000 0.39/2600

>12 to 14 0.45/2000 0.45/3200

>14 to 16 0.5/2300 0.5/3700

>16 to 18 0.55/2600 0.55/4400

>18 to 20 0.6/3000 0.6/5000

Table 18.4(c) Control Mode Specific Application (CMSA) Protection for Rubber Tires

PilingMethod


MaximumCeiling/Roof

HeightK-Factor

Type ofSystem

Number ofSprinklers

OperatingPressure

Hose Stream Allowance Water Supply Duration (hours)


385 of 579 5/19/2014 1:50 PM

ft m ft m

Rubber tire storage, on-side or on-tread, in palletized portableracks, or open portable racks, or fixed racks without solid shelves 25 7.6 32 9.8

11.2(160) Wet 15

75 psi

(5.2bar)

500 gpm

(1900 L/min) 3

25 7.6 32 9.8 16.8 (240) Wet 15

35 psi

(2.4 bar)

500 gpm (1900 L/min) 3

Table 18.4(d) Early Suppression Fast-Response (ESFR) Sprinklers for Protection of Rubber Tires (seeNote 1)

PilingMethod

PileHeight

MaximumBuildingHeight

NominalK-factor

OrientationNumber ofSprinklers


(see Note 2)

Duration (hours) Hose Allowance

ft m psi bar

gpm L/min

Rubber tire storage, on-side or on-tread, in palletizedportable racks, open portable racks, or fixed racks withoutsolid shelves

Up to25 ft

(7.6m)

30 9.114.0

(200)

Upright/

pendent

12

(seeNote 2)

50 3.5

1 250 946

16.8

(240)

Upright/

pendent

12

(see Note 2)35 2.4

1 250 946

22.4

(320)Pendent

12

(see Note 2)25 1.7

1 250 946

25.2 (360) Pendent12

(see Note 2)15 1.0

1 250 946

Rubber tire storage, on-side, in palletized portableracks, open portable racks, or fixed racks withoutsolid shelves

Up to 25ft (7.6 m)

35 10.714.0

(200)

Upright/

pendent

12

(seeNote 2)

75 5.2

1 250 946

16.8

(240)Pendent

12

(see Note 2)52 3.6

1 250 946

22.4

(320)Pendent

12

(see Note 2)35 2.4

1 250 946

25.2 (360) Pendent12

(see Note 2)25 1.7


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1 250 946

On-tread, on-side, and laced tires in openportable steel racks or palletized portable racks

Up to 25 ft(7.6 m)

30 9.114.0

(200)Pendent

20

(see Notes3 and 4)

75 5.2

3 500 1900

16.8

(240)Pendent

20

(see Notes 3 and4)

52 3.6

Rubber tire storage, on-side, in palletized portableracks

Up to 25 ft (7.6m)

40 12.2

1 250 946

16.8

(240)Pendent 12 52 3.6

Rubber tire storage, on-tread, or laced in openportable steel racks

Up to 25 ft (7.6m)

40 12.225.2

(360)Pendent 12 40 2.8

1 250 946

On-tread, on-side, and laced tires in open portable steelracks or palletized portable racks

Up to 30 ft(9.1 m)

40 12.225.2

(360)Pendent 12 75 5.2

1 250 946

Notes:

(1) Wet systems only.

(2) The shape of the design area shall be in accordance with 14.4.3 and 14.4.4.

(3) Where used in this application, ESFR protection is expected to control rather than to suppress the fire.

(4) The design area shall consist of the most hydraulically demanding area of 20 sprinklers, consisting of

five sprinklers on each of four branch lines. The design shall include a minimum operating area of 1600 ft2

(149 m2).



(Last two columns of Table 18.4(c) and last three columns of Table 18.4.(d) deleted -- moved to Table 12.8.6)




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388 of 579 5/19/2014 1:50 PM


19.1.1.1

The water supply system for automatic fire protection systems shall be designed for a minimum duration of2 hours.

19.1.1.1.1

For ESFR sprinklers, the water supply duration shall be 1 hour.



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389 of 579 5/19/2014 1:50 PM


19.1.1.2

At least 500 gpm (1900 L/min) shall be added to the sprinkler demand for large and small hose streamallowance.

19.1.1.2.1

For ESFR sprinklers, the hose stream allowance shall be for 250 gpm (946 L/min).






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390 of 579 5/19/2014 1:50 PM


19.1.1.3

The water supply design shall include the demand of the automatic sprinkler system plus the hose streamallowance plus, where provided, the high-expansion foam system for the dura on specified in Table 12 . 8.6

.






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391 of 579 5/19/2014 1:50 PM


Reconsider the proposal and return the text of Section 20.5.6.4 to that of the 2013 edition of NFPA 13.

20.5.6.4

Sprinklers shall be provided in transverse flue spaces in accordance with 20.5.6.4.1 through 20.5.6.4.3.1and Figure 20.5.6.4.

Figure 20.5.6.4 Sprinkler Location and Spacing in Transverse Flues.

20.5.6.4.1

For double- and multiple-row racks, in-rack sprinklers shall be installed in the transverse flues at eachcatwalk level and shall be staggered vertically. For single-row racks, in-rack sprinklers shall be installed inthe transverse flue at each catwalk level.

20.5.6.4.2

For double- and multiple-row racks sprinklers installed in the transverse flues shall be located not less than18 in. (0.46 m) but not greater than 24 in. (0.61 m) from the face of the rack on the catwalk side.

20.5.6.4.3

For single-row racks, sprinklers installed in the transverse flues shall be staggered horizontally such thatthe sprinkler at first level is not less than 18 in. (0.46 m) but not greater than 24 in. (0.61 m) from the face ofthe rack on the catwalk side.


392 of 579 5/19/2014 1:50 PM

20.5.6.4.3.1

At the next level the sprinkler in the transverse flue shall be located not less than 6 in. (0.15 m) but notgreater than 12 in. (0.30 m) from the back face of the rack. This staggering shall be repeated throughout allcatwalk levels.

20.5.6.4.4

In-rack sprinklers shall be installed a minimum 6 in. (150 mm) above the top of storage.

20.5.6.4.5

Transverse flue sprinklers shall be quick-response, ordinary temperature, nominal K-5.6 (80), K-8.0 (115),or K-11.2 (160) and installed in accordance with Figure A.20.5.6.3.5(a) and Figure A.20.5.6.3.5(b).





The proposed text, and the corresponding Figure are intended to clarify how to install sprinklers in a single row rack protecting record storage, but unfortunately, the submission does not clarify the issue. The Figure is not understandable; it seems to be missing some detail, such as an outline of the racks and the aisles. All that is evident is an exterior wall and a pattern of X and ∆ symbols.Additionally, from the text it appears the levels of sprinklers are being staggered between the front and the back of single row racks, but the substantiation did not provide any technical detail to explain what advantage this configuration might have.

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Public Input No. 478-NFPA 13-2013 [Section No. 20.5.6.4 [Excluding any Sub-Sections]]




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393 of 579 5/19/2014 1:50 PM



394 of 579 5/19/2014 1:50 PM

21.2.1


395 of 579 5/19/2014 1:50 PM

Protection of palletized and solid-piled storage of Class I through Class IV and cartoned unexpanded plasticcommodities shall be permitted to be protected in accordance with Table 21.2.1.

Table 21.2.1 Extended Coverage, CMSA [K-factor 25.2 (360)] Sprinkler Design Criteria for Palletized andSolid-Piled Storage of Class I Through Class IV and Cartoned Unexpanded Plastic Commodities

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

OrientationType ofSystem

Numberof Design

Sprinklers


MaximumCoverage

Areaft m ft m

Palletized andsolid-piled

Class I throughClass IV,encapsulatedandnonencapsulated,and cartonednonexpandedplastics

20 6.1 30 9.1

25.2 (360)Upright/

pendent

Wet 6 30 psi

.

(2

1 bar)12 ft × 12 ft .

(

3.7 m × 3.7 m) 144 ft

2

(13

.

4 m 2 ) 20 6.

1

30 9.1 25.2 (360) Upright/

pendent Wet 6 30 psi

(2.1

bar)14 ft × 14 ft

(4.3 m × 4.3 m) 196 ft 2 (18.2 m 2 )

25 7.6 30 9.125.2 (360) Upright/

pendentWet 6 30 psi

.

(2

1 bar)12 ft × 12 ft .

(

3.7 m × 3.7 m) 25 7.6 30 9.1 25.

2

(360) Upright/

.

pendent Wet 6 30 psi

(2.

1 bar)14 ft × 14 ft

(4.3 m × 4.3 m) 196 ft 2 (18.2 m 2 )


396 of 579 5/19/2014 1:50 PM

25 7.6 35 11 25.2 (360)

Upright/

pendent

Pendent Wet 8

40 psi

(2.8bar)

12 ft × 12 ft

(3.7 m × 3.7 m) 144 ft 2 (13.4

m 2 )

25 7.6 35 11 25.2 (360) Upright Wet 8

40 psi

(2.8bar)

14 ft × 14 ft

(4.3 m × 4.3 m) 196 ft 2

(18.2 m 2 )

30 9.1 35 11 25.2 (360)

Upright/

pendent

Pendent Wet 8

40 psi

(2.8bar)

12 ft × 12 ft

(3.7 m × 3.7 m) 144 ft 2 (13.4

m 2 )

30 9.1 35 11 25.2 (360) Upright Wet 8

40 psi

(2.8bar)

14 ft × 14 ft

(4.3 m × 4.3 m) 196 ft 2

(18.2 m 2 )


Duplicate entries are eliminated where the same protection criteria is provided for the same type of sprinkler (upright/pendent) at a spacing of both 12 ft x 12 ft and 14 ft x 14 ft maximum. It makes no sense to have different allowable maximum area per sprinkler for the exact same design criteria.

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397 of 579 5/19/2014 1:50 PM


TITLE OF NEW CONTENT

Add Table 21.3.2 as attached to include CMSA Upright K25.2 Upright Sprinkler



LP46_upright.xlsx Chart to included in the referenced table

V4603_upright_reports.pdf Report to substantiate chart


New sprinkler design criteria to be included in NFPA 13. See attached report

Related Item

Public Input No. 502-NFPA 13-2013 [New Table]]


Submitter Full Name: Peter Thomas

Organization: Victaulic Company

Street Address:

City:

State:

Zip:



398 of 579 5/19/2014 1:50 PM

Table 21.3.x CMSA K 25.2 Upright Standard Coverage Sprinkler Design Criteria for Single-, double-, and multiple-row racks without solid shelves;

and solid-piled, palletized, shelf, or bin-box storage arrangementof Class I Through Class IV and Cartoned Unexpanded Plastic Commodities

Number of Minimum

K-factor Type of Design Operating

Orientation System Sprinklers Pressure

ft m ft m min. max. min. max.

10 3.0 15 4.5 20 7 psi (0.5 bar) 8 (2.4) 12 (3.6) 80 (7.5) 100 (9.0)

solid-piled, palletized, Class I through IV 15 4.5 20 6.1 25.2 (360) Dry 20 7 psi (0.5 bar) 8 (2.4) 12 (3.6) 80 (7.5) 100 (9.0)

shelf, or bin-box encapsulated and 20 6.1 25 7.6 Upright 20 10 psi (0.7 bar) 8 (2.4) 12 (3.6) 80 (2.4) 100 (9.0)

and nonencapsulated, 25 7.6 30 9.1 30 15 psi (1.0 bar) 8 (2.4) 12 (3.6) 80 (2.4) 100 (9.0)

Single-, double-, and and cartoned nonexpanded

multiple- row racks plastics

without solid shelves

(no open top containers) Class III encapsulated and 35 10.7 40 12.2 25.2 (360) Dry 24* 15 psi (1.0 bar) 8 (2.4) 10 (9.0) 8 (2.4) 100 (9.0)

nonencapsulated 40 12.2 45 13.7 Upright 12** 50 psi (3.5 bar) 8 (2.4) 10 (9.0) 8 (2.4) 100 (9.0)

* Based on Maximum water delivery time of 25 seconds

** Based on Maximum water delivery time of 20 seconds

solid-piled, palletized, Class I through IV 10 3.0 15 4.5 12 20 (1.4) 8 (2.4) 12 (3.6) 80 (7.5) 100 (9.0)

shelf, or bin-box encapsulated and 15 4.5 20 6.1 25.2 (360) Wet 12 20 (1.4) 8 (2.4) 12 (3.6) 80 (7.5) 100 (9.0)

and nonencapsulated, 20 6.1 25 7.6 Upright 12 20 (1.4) 8 (2.4) 12 (3.6) 80 (7.5) 100 (9.0)

Single-, double-, and and cartoned nonexpanded 25 7.6 30 9.1 12 20 (1.4) 8 (2.4) 12 (3.6) 80 (7.5) 100 (9.0)

multiple- row racks plastics


(no open top containers)

Spacing

Area

SprinklerMaximum

Ceiling/Roof

Height Spacing

Linear

Sprinkler

Arrangement

Storage

Commodity Class

Maximum

Storage

Height


TITLE OF NEW CONTENT

Add Table after 21.3.1 to include CMSA Pendent K25.2 (360) sprinkler as shown



LP46_pendent.xlsx Table to be included in standard

V4601_test_reports.pdf substantiating reports


Add new K 25, pendent standard coverage sprinkler into special design section in Chapter 21

Related Item

Public Input No. 502-NFPA 13-2013 [New Section after 21.3.2]


Submitter Full Name: Peter Thomas

Organization: Victaulic Company

Street Address:

City:

State:

Zip:



399 of 579 5/19/2014 1:50 PM

Table 21.3.x CMSA K 25.2 Pendent Standard Coverage Sprinkler Design Criteria for Single-, double-, and multiple-row racks without solid shelves;

and solid-piled, palletized, shelf, or bin-box storage arrangementof Class I Through Class IV and Cartoned Unexpanded Plastic Commodities

Number of Minimum

K-factor Type of Design Operating

Orientation System Sprinklers Pressure

ft m ft m min. max. min. max.

10 3.0 15 4.5 12 7 psi (0.5 bar) 8 (2.4) 12 (3.6) 80 (7.5) 100 (9.0)

solid-piled, palletized, Class I through IV 15 4.5 20 6.1 25.2 (360) Wet 12 7 psi (0.5 bar) 8 (2.4) 12 (3.6) 80 (7.5) 100 (9.0)

shelf, or bin-box encapsulated and 20 6.1 25 7.6 Pendent 12 10 psi (0.7 bar) 8 (2.4) 12 (3.6) 80 (2.4) 100 (9.0)

and nonencapsulated, 25 7.6 30 9.1 12 10 psi (0.7 bar) 8 (2.4) 12 (3.6) 80 (2.4) 100 (9.0)

Single-, double-, and and cartoned nonexpanded 30 9.1 35 10.7 12 30 psi (2.1 bar) 8 (2.4) 10 (3.0) 80 (7.5) 100 (9.0)

multiple- row racks plastics 35 10.7 40 12.2 12 30 psi (2.1 bar) 8 (2.4) 10 (3.0) 80 (7.5) 100 (9.0)


(no open top containers)

Spacing

Area

SprinklerMaximum

Ceiling/Roof

Height Spacing

Linear

Sprinkler

Arrangement

Storage

Commodity Class

Maximum

Storage

Height



400 of 579 5/19/2014 1:50 PM

21.3.1


401 of 579 5/19/2014 1:50 PM

Protection of single-, double-, and multiple-row racks without solid shelves of Class I through Class IV andcartoned unexpanded plastic commodities shall be permitted to be protected in accordance with Table21.3.1.

Table 21.3.1 Extended Coverage, CMSA [K-Factor 25.2 (360)] Sprinkler Design Criteria for Single-,Double-, and Multiple-Row Racks Without Solid Shelves of Class I Through Class IV and CartonedUnexpanded Plastic Commodities

StorageArrangement

CommodityClass


MaximumCeiling/Roof

HeightK-Factor/

OrientationType ofSystem

Numberof Design

Sprinklers


MaximumCoverage

Areaft m ft m

Single-,double-, andmultiple-rowracks withoutsolid shelves(no open-topcontainers)

Class I throughClass IV,encapsulatedandnonencapsulated,and cartonednonexpandedplastics

20 6.1 30 9.125.2 (360)Upright/

.

pendent Wet 6 30 psi (2

1 bar)12 ft × 12 ft .

(3.7 m × 3.7 m) 144 ft 2 (13.4 m 2 ) 20 6.1 30 9.1 25.2 (360) Upright/

pendent Wet 6 30 psi (2.1 bar)14 ft × 14 ft

(4.3 m × 4.3 m) 196 ft 2 (18.2 m 2 )

25 7.6 30 9.1 25.2 (360) Upright/

.

pendent Wet 6 30 psi (2

1 bar)12 ft × 12 ft .

(3.7 m × 3.7 m) 144 ft 2 (13.4 m 2 ) 25 7.6 30 9.1 25.2 (360) Upright/

pendent Wet 6 30 psi (2.1 bar)14 ft × 14 ft

(4.3 m × 4.3 m) 196 ft 2 (18.2 m 2 )

25 7.6 35 11 25.2 (360)

Upright/

.

pendent

Wet 840 psi (2.6

bar)

12 ft × 12 ft

(3.7 m × 3.7 m) 144 ft 2

(13.4 m 2 )

25 7.6 35 1125.2 (360)

UprightWet 8

40 psi (2.6bar)

14 ft × 14 ft

(4.3 m × 4.3 m) 196 ft 2

(18.2 m 2 )


402 of 579 5/19/2014 1:50 PM

30 9.1 35 11 25.2 (360)

Upright/

.

pendent

Wet 840 psi (2.6

bar)

12 ft × 12 ft

(3.7 m × 3.7 m) 144 ft 2

(13.4 m 2 )

30 9.1 35 1125.2 (360)

UprightWet 8

40 psi (2.6bar)

14 ft × 14 ft

(4.3 m × 4.3 m) 196 ft 2

(18.2 m 2 )


Duplicate entries are eliminated where the same protection criteria is provided for the same type of sprinkler (upright/pendent) at a spacing of both 12 ft x 12 ft and 14 ft x 14 ft maximum. It makes no sense to have different allowable maximum area per sprinkler for the exact same design criteria.

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Public Input No. 378-NFPA 13-2013 [Section No. 21.3]




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403 of 579 5/19/2014 1:50 PM


21.5.1 General.

The installation guidelines for obstructions to ceiling-level sprinklers shall be in accordance with therequirements of Section 21.5 for sprinkler system designs obtained from this chapter.


CC NOTE: The following CC Note No. 17 appeared in the First Draft Report.

The TC should review section 21.5 to address the following concerns:At the present time, Section 21.5.2.1 indicates that if a design from Chapter 21 is 20 sprinklers or less and is applicable to a standard-coverage type sprinkler, then the obstruction guidelines in Section 8.12.5 shall be used for the sprinkler’s installation. Section 8.12.5 is the obstruction guidelines for ESFR sprinklers.At the present time, Section 21.5.3.1 indicates that if a design from Chapter 21 is 10 sprinklers or less and is applicable to an extended-coverage type sprinkler, then the obstruction guidelines in Sections 8.8.5.1, 8.12.5.2 and 8.12.5.3 shall be used for the sprinkler’s installation. Section 8.8.5.1 is the umbrella pattern obstruction guidelines for an extended-coverage sprinkler whereas Sections 8.12.5.2 and 8.12.5.3 are obstruction guidelines for ESFR sprinklers in the presence of either isolated or continuous obstructions located below an ESFR sprinkler.The intent of these guidelines was to help ensure that potential obstructions in the protected area would not compromise the suppression-like performance of the sprinkler listed in Chapter 21. It should be noted that there are several other sections within NFPA 13 that provide guidance for ESFR sprinklers that also try to ensure that the sprinkler’s performance is not compromised; they include: 8.4.6.1.2 (no open-top containers), 8.4.6.2 (max. roof slope of 2 in 12), 8.4.6.3 (can be used under obstructed ceiling construction), 8.4.6.3.1 (needed in every channel if depth of solid structural member greater than 12 in.), 8.4.6.4.1 (draft curtain needed to separate QR from SR sprinkler areas), 8.4.6.4.2 (clear aisle of 4 ft needed under draft curtain), 12.1.1 (heat/smoke vents should not be installed), and 12.6.7 (able to protect light and ordinary hazard occupancies).

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Correlating Committee Note No. 17-NFPA 13-2013 [Section No. 21.5.1]




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404 of 579 5/19/2014 1:50 PM


Chapter 22 Special Occupancy Requirements

22.1 General.

22.1.1 Application.

22.1.1.1

In addition to the requirements of Chapter 8, Chapters 11 through 22, and Chapter 23, the followingspecial occupancy requirements shall apply.

22.1.1.1.1

All provisions of design criteria in this standard, including design area increases and reductions, shall alsoapply to these special occupancy requirements.

22.1.1.2

Where the requirements of the reference standard differ from the requirements of this standard, thereference standard shall take precedence.

22.1.2 Definitions.

For terms not defined in Chapter 3, the definitions of the reference standard shall apply.

22.2 Flammable and Combustible Liquids.

22.2.1 Design Requirements.

Sprinkler system discharge criteria for the protection of flammable and combustible liquids shall complywith NFPA 30.

22.2.2 Installation Requirements. (Reserved)

22.3 Aerosol Products.


Sprinkler system discharge criteria for the protection of aerosol products shall comply with NFPA 30B.

22.3.2 Installation Requirements.

(Reserved)

22.4 Spray Application Using Flammable or Combustible Materials.


22.4.1.1*

The automatic sprinkler system shall be a wet pipe system, a dry pipe system, a preaction system, or anopen-head deluge system, whichever is most appropriate for the portion of the spray operation beingprotected. [33:9.4.1]

22.4.1.2

The automatic sprinkler system shall be designed for Extra Hazard (Group 2) occupancies as defined inNFPA 13.

Exception No. 1: For spray application of styrene cross-link thermoset resins, Section 17.3 of NFPA 33shall apply.

Exception No. 2: Automatic sprinkler systems for powder coating operations shall be designed forOrdinary Hazard (Group 2), as defined in NFPA 13. [33:9.4.2]

22.4.1.3

The water supply shall be sufficient to supply all sprinklers likely to open in any one fire incident withoutdepleting the available water for use in hose streams. [33:9.4.3]

22.4.1.4

Where sprinklers are installed to protect spray areas and mixing rooms only, water shall be permitted to besupplied from domestic water systems, provided the domestic supply can meet the design criteria of22.4.1.2. [33:9.4.4]

22.4.1.5

The sprinkler system shall be controlled by a separate, listed indicating valve(s), operable from floor level.[33:9.4.5]


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22.4.1.6

Automated liquid electrostatic spray application equipment that is unlisted shall be protected further by thefollowing:

(1) In addition to meeting the requirements in 9.8.1 of NFPA 33, the optical flame detection system shallalso activate one of the following over each zone in which fire has been detected:

(a) An open head deluge system designed to discharge a minimum density of 24.4 mm/min (0.6

gpm/ft2)

(b) A carbon dioxide extinguishing system

(c) A dry chemical extinguishing system

(d) A gaseous agent extinguishing system

[33:9.8.2(1)]

22.4.1.7

A wet pipe sprinkler system shall also be provided throughout the spray booth. This system shall meet allthe applicable requirements of NFPA 13 for Extra Hazard (Group 2) occupancies. [33:9.8.2(3)]

22.4.2* Installation Requirements.

22.4.2.1*

Sprinkler systems protecting stacks or ducts shall meet all of the following requirements:

(1) Sprinklers shall be spaced no more than 3.7 m (12 ft) apart.

(2) If exhaust ducts are manifolded, a sprinkler shall be located in the manifold at the junction of eachexhaust duct with the manifold.

(3) Sprinklers shall provide a minimum flow of 114 L/min (30 gpm) per head at a minimum of 1 bar (15psi) pressure.

(4) Sprinklers shall be ordinary temperature rated, unless required to be higher due to operatingtemperatures measured in the ducts, in which case the operating temperature shall be at least 28°C(50°F) above the inside temperature of the duct.

[33:9.4.6]

22.4.2.1.1

Stacks and exhaust ducts shall be provided with access openings for inspection and cleaning of sprinklers.[33:9.4.6.1]

22.4.2.1.2

Sprinkler systems protecting stacks and ducts that are subject to freezing shall be of a nonfreezing type orbe a manually controlled open-head system. [33:9.4.6.2]

22.4.2.2

Sprinklers shall be protected against overspray residue, either by location or covering, so that they willoperate quickly in event of fire. [33:9.4.7]

22.4.2.2.1

Sprinklers shall be permitted to be covered only by cellophane bags having a thickness of 0.08 mm (0.003in.) or less or by thin paper bags. These coverings shall be replaced frequently so that heavy deposits ofresidue do not accumulate. [33:9.4.7.1]

22.4.2.2.2

Sprinklers that have been painted or coated by overspray or residues shall be replaced with newsprinklers. [33:9.4.7.2]

22.5 Solvent Extraction Plants. [NFPA 36]

22.5.1* Design Requirements.


22.6 Installation and Use of Stationary Combustion Engines and Gas Turbines.

22.6.1* Design Requirements.

Automatic sprinkler systems shall be designed to provide for a density of 0.3 gpm/ft2 (12.2 mm/min) over

the most remote 2500 ft2 (230 m2). [37:11.4.5.1]



406 of 579 5/19/2014 1:50 PM

22.6.2.1

Sprinklers and spray nozzles shall be spaced at a 100 ft2 (9 m2) maximum area of coverage per sprinkeror spray nozzle. [37:11.4.5.1.1]

22.6.2.2

Sprinkler and water spray system coverage shall be provided to all areas within the enclosure locatedwithin 20 ft (6 m) of the following:

(1) The engine

(2) The lubricating oil system

(3) The fuel system

[37:11.4.5.1.2]

22.6.2.3

Sprinklers and water spray nozzles shall not be directed at engine components that are susceptible tothermal shock or deformation. [37:11.4.5.2]

22.7 Nitrate Film.


22.7.1.1

Every room, except projection booths and rewinding rooms, where nitrate film is stored or handled inquantities greater than 51 lb (23 kg), or 10 standard rolls, shall be protected by an automatic sprinklersystem that is installed in accordance with the requirements for Group II extra hazard occupancies.[40:5.1.2]

22.7.1.2

Water supplies for automatic sprinklers shall be based on 20 gpm (1.26 L/sec) per sprinkler for 20 minutesfor the total number of sprinklers in one vault plus 25 percent of the sprinklers in the communicating firearea. [40:5.2.2]

22.7.1.3* Vaults Other Than Extended Term Storage Vaults.

[40:6.3] (See Figure A.22.7.1.3.) Fire protection in vaults shall be provided by a deluge system withdirectional nozzles meeting the criteria in 22.7.1.4. [40:6.3.7]

22.7.1.4

For extended term storage vaults in accordance with Section 6.5.5 of NFPA 40, fire protection shall beprovided by a deluge system with directional nozzles installed in accordance with NFPA 15 and meetingthe criteria in 22.7.1.5 through 22.7.1.11. [40:6.5.6]

22.7.1.5

Sprinkler systems in existing extended term storage vaults that were in compliance with the provisions ofthis standard at the time of installation shall be permitted to be continued in use. [40:6.5.6.1]

22.7.1.6

High-velocity open head nozzles each capable of providing a discharge rate of 1.26 L/sec (20 gpm) at agauge pressure of 345 kPa (50 psi) shall be installed. [40:6.5.6.2]

22.7.1.7

The design shall be based on a discharge density of 28 mm/min (0.68 gpm/ft2) over each face of storageracks. [40:6.5.6.3]

22.7.1.8*

The nozzles shall have a combined spray pattern capable of covering the face of the film storage racks.[40:6.5.6.4]

22.7.1.9

The nozzles shall be installed at the top of the storage shelf array, aimed at the opposite shelf array.[40:6.5.6.5]

22.7.1.10*

Nozzles shall be installed on opposite faces of the storage shelf array in a staggered pattern such that nonozzles are directly opposite one another. [40: 6.5.6.6]

22.7.1.11

The water supply duration shall be a minimum of 20 minutes. [40:6.5.6.7]


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22.7.1.12

The deluge system shall be activated by a signal from one of the following: [40:6.5.6.8]

(1) An air sampling–type smoke detection system

(2) A fixed temperature heat sensitive cable


22.7.2.1

In areas or rooms where nitrate film is handled, the area that is protected per sprinkler head shall not

exceed 64 ft2 (6 m2) with sprinklers not being more than 8 ft (2.4 m) apart. [40:5.1.4]

22.7.2.2 Cabinet Protection.

[40:6.2.5]

22.7.2.2.1

Cabinets having a capacity of more than 34 kg (75 lb), or 15 standard rolls, of film shall be provided with atleast one automatic sprinkler head. [40:6.2.5.1]

22.7.2.2.2

Where cans are stored on more than one shelf, as shown in Figure 22.7.2.2.2 and as described in 6.2.6.2or 6.2.6.3 of NFPA 40, one sprinkler shall be provided for each shelf. [40:6.2.5.2]

Figure 22.7.2.2.2 Standard Film Cabinet for Other Than Extended Term Storage Film. [40:Figure6.2.1]

22.7.2.3 Motion Picture Film Laboratories.

In all cases, sprinklers shall be arranged so that not more than two machines are protected by any onesprinkler head. [40:9.2.5.2]

22.8 Laboratories Using Chemicals.


Automatic sprinkler system protection shall be required for all new laboratories in accordance with thefollowing:

(1) Automatic sprinkler system protection for Class A and Class B laboratories shall be in accordancewith NFPA 13 for ordinary hazard (Group 2) occupancies.

(2) Automatic sprinkler system protection for Class C and Class D laboratories shall be in accordancewith NFPA 13 for ordinary hazard (Group 1) occupancies.

[45:6.2.1.1]


Fire sprinklers in laboratory units shall be the quick response (QR) sprinkler type installed in accordancewith NFPA 13. [45:6.2.1.2]

22.9 Oxygen-Fuel Gas Systems for Welding, Cutting, and Allied Processes.



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22.9.1.1

The total gas capacity of nonliquefied flammable gas (e.g., acetylene) shall be permitted to be increased to

56.6 m3 (2000 ft3) per control area under one of the following conditions:

(1) In cylinder storage areas that are protected by an automatic sprinkler system and water supplydesigned in accordance with NFPA 13, furnishing a sprinkler discharge density of at least (10

L/min)/m2 [(0.25 gal/min)/ft2] over a minimum operating area of at least 279 m2 (3000 ft2) withsprinklers located not more than 6.1 m (20 ft) above the floor where the cylinders are stored.

(2) In cylinder storage areas that are protected by an automatic water spray fixed system of equaldensity, designed in accordance with NFPA 15

22.9.1.2

Oxygen cylinders connected to one manifold shall be limited to a total gas capacity of 42.5 m3 (1500 ft3).Two such manifolds with connected cylinders shall be permitted to be located in the same room, providedthe building is protected throughout with an approved automatic sprinkler system designed in accordance

with NFPA 13, furnishing a sprinkler discharge density of at least (10 L/min)/m2 [(0.25 gal/min)/ft2] over a

minimum operating area of at least 279 m2 (3000 ft2) with sprinklers located not more than 6.1 m (20 ft)above the floor where the manifolds are located.


22.9.2.1

In buildings protected by an automatic sprinkler system and water supply designed in accordance withNFPA 13 for an ordinary hazard or more hazardous occupancy, where the occupancy other than thecylinder storage is not more hazardous than ordinary hazard as defined in NFPA 13, the distance betweendesignated storage areas shall be permitted to be reduced to 15.2 m (50 ft). If the occupancy in suchprotected buildings between the designated storage areas is free of combustible material, the distanceshall be permitted to be reduced to 7.6 m (25 ft).

22.10 Acetylene Cylinder Charging Plants.


22.10.1.1

When sprinkler protection is provided, the area in which flammable compressed gases are stored or usedshall be protected with a sprinkler system designed to be not less than that required by NFPA 13 for Extra

Hazard Group 1 with a minimum design area of 2500 ft2 (232.26 m2). [51A:11.2.1.2]


22.11 Compressed Gases and Cryogenic Fluids Code.

22.11.1 Design Criteria.

22.11.1.1

When sprinkler protection is required, the area in which compressed gases or cryogenic fluids are storedor used shall be protected with a sprinkler system designed to be not less than that required by NFPA 13for Ordinary Hazard Group 2. [55:6.10.2.1]

22.11.1.2

When sprinkler protection is required, the area in which the flammable or pyrophoric compressed gases orcryogenic fluids are stored or used shall be protected with a sprinkler system designed to be not less thanthat required by NFPA 13 for Extra Hazard Group 1. [55:6.10.2.2]


22.12 Utility LP-Gas Plants.


22.12.1.1

The design of fire water supply and distribution systems, where used, shall provide for the simultaneoussupply of those fixed fire protection systems involved in the maximum single incident expected in the plant,including monitor nozzles, at their design flow and pressure. [59:13.4.2]

22.12.1.2

An additional supply of 1000 gal/min (63 L/sec) shall be available for hand hose streams for a period of notless than 2 hours. [59:13.4.2.1]

22.12.1.3

Manually actuated monitors shall be permitted to be used to augment hand hose streams. [59:13.4.2.2]


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22.13 Production, Storage, and Handling of Liquefied Natural Gas (LNG).


The fire water supply and distribution systems, if provided, shall simultaneously supply water to fixed fireprotection systems, including monitor nozzles, at their design flow and pressure, involved in the maximumsingle incident expected in the plant plus an allowance of 1000 gpm (63 L/sec) for hand hose streams fornot less than 2 hours. [59A:12.5.2]


22.14 Protection of Information Technology Equipment.

22.14.1 Design Requirements. (Reserved)


22.14.2.1*

Information technology equipment rooms and information technology equipment areas located in asprinklered building shall be provided with an automatic sprinkler system. [75:8.1.1]

22.14.2.2

Sprinkler systems protecting information technology equipment areas shall be valved separately fromother sprinkler systems. [75:8.1.3]

22.14.2.3*

An automatic sprinkler system or a gaseous fire extinguishing system shall be provided for the protectionof the area below a raised floor in an information technology equipment room or information technologyequipment area when one or more of the following exist:

(1) There is a critical need to protect data in the process, reduce equipment damage, and facilitate returnto service.

(2) The area below the raised floor contains combustible material.

[75:8.1.1.2]

22.15 Standard on Incinerators, and Waste and Linen Handling Systems and Equipment.



22.15.2.1

Automatic sprinklers shall be provided in incinerator rooms. [82:4.2.7.3]

22.15.2.2* Waste and Linen Chutes and Transport Systems.

[82:5]

22.15.2.2.1 Gravity Waste or Linen Chutes.

[82:5.2]

22.15.2.2.1.1

Gravity chutes shall be protected internally by automatic sprinklers unless they are lined in accordancewith 5.2.2.6.1 in NFPA 82. [82:5.2.2.6.2; 82:5.2.6.1.1]

22.15.2.2.1.2

This protection requires that a sprinkler be installed at or above the top service opening of the chute.[82:5.2.6.1.2]

22.15.2.2.1.3 Chute Sprinkler Protection.

Automatic sprinklers installed in gravity chute service openings shall be recessed out of the chute areathrough which the material travels. [82:5.2.6.1.3]

22.15.2.2.1.4

In addition, a sprinkler shall be installed within the chute at alternate floor levels in buildings over twostories in height, with a mandatory sprinkler located at the lowest service level. [82:5.2.6.1.4]

22.15.2.2.1.5 Chute Room Automatic Sprinklers.

Automatic sprinklers shall be installed in chute terminal rooms. [82:5.2.6.2.1]

22.15.2.2.2 Full Pneumatic Waste and Linen Conveying Systems.

[82:5.3]

22.15.2.2.2.1

Full pneumatic-type risers shall be protected internally by automatic sprinklers. [82:5.3.4.1]


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22.15.2.2.2.2

A sprinkler shall be required at or above the top loading station and at alternate floor levels in buildingsover two stories in height, with a mandatory sprinkler located at the lowest loading station. [82:5.3.4.2]

22.15.2.2.2.3

Sprinklers shall be recessed out of the station area through which the material travels. [82:5.3.4.3]

22.15.2.2.3 Gravity Pneumatic Trash or Linen Conveying Systems.

[82:5.4]

22.15.2.2.3.1 Chute Automatic Sprinklers.

Where material is to be stored at the bottom of the chute and above the riser discharge damper (above thetransport tee), automatic sprinklers shall be installed below the last service door on the chute. [82:5.4.2.3]

22.15.2.2.3.2

Automatic sprinklers shall be installed in chute discharge rooms. [82:5.4.2.4.3]

22.15.2.3 Waste Handling Systems.

22.15.2.3.1

Automatic sprinklers shall be installed in rooms where waste handling systems and equipment are used totransport waste from interim storage areas to waste processing equipment, such as incinerators. [82:6.4.1]

22.15.2.3.2

In locations or rooms where waste handling systems and equipment are used for interim storage of wasteonly, the rooms shall be sprinklered in accordance with requirements specified in 22.15.2.4. [82:6.4.2]

22.15.2.4 Waste Compactors.

[82:7]

22.15.2.4.1

All chute-fed compactors shall have an automatic sprinkler with a minimum 13 mm (1⁄2 in.) orifice installedin the hopper of the compactor. [82:7.2.1]

22.15.2.4.2

Sprinklers shall be ordinary temperature-rated sprinklers. [82:7.2.1.1]

22.15.2.4.3

Sprinklers shall be supplied by a minimum of 1 in. (25.4 mm) ferrous piping or 3⁄4 in. (19 mm) copper tubingline from the domestic cold water supply or by the building fire sprinkler system. [82:7.2.1.2]

22.15.2.4.4

Sprinkler water pipe shall be protected from freezing in outdoor installations. [82:7.2.1.3]

22.15.2.4.5

Hand-fed compactors located within a building and not operated in conjunction with a chute shall notrequire installation of an automatic sprinkler in the hopper. [82:7.2.2]

22.15.2.5

Waste and recyclables storage rooms shall be provided with automatic sprinklers. [82:8.3]

22.15.2.6

Rooms in which waste processing equipment is located shall be installed with automatic sprinklers.[82:9.4.1]

22.16 Standard for Ovens and Furnaces.



22.16.2.1*

Where automatic sprinklers are provided, they shall be installed in accordance with NFPA 13, unlessotherwise permitted by 22.16.2.2. [86:9.2.1]

22.16.2.2

Where sprinklers that protect only ovens are installed and connection to a reliable fire protection watersupply is not feasible, a domestic water supply connection shall be permitted to supply these sprinklerssubject to the approval of the authority having jurisdiction. [86:9.2.2]


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22.16.2.3

Where sprinklers are selected for the protection of ovens, furnaces, or related equipment, the use ofclosed-head sprinkler systems shall be prohibited and only deluge sprinkler systems shall be used wherethe following conditions exist:

(1) In equipment where temperatures can exceed 625°F (329°C)

(2) Where flash fire conditions can occur

[86:9.3.3]

22.16.2.4

Furnaces shall be located so as to minimize exposure to power equipment, process equipment, andsprinkler risers. [86:5.1.3.1]

22.16.2.5

Where water from a fixed protection system could come in contact with molten materials, such as moltensalt or molten metal, shielding shall be provided to prevent water from contacting the molten material.[86:9.3.1]

22.16.2.6*

Galvanized pipe shall not be used in sprinkler or water spray systems in ovens, furnaces, or relatedequipment. [86:9.3.2]

22.17 Health Care Facilities Code, Hyperbaric Chambers.


22.17.1.1

A fixed water deluge extinguishing system shall be installed in all chamber compartments that aredesigned for manned operations. [99:14.2.5.2]

22.17.1.2

In chambers that consist of more than one chamber compartment (lock), the design of the deluge systemshall meet the requirements of 22.17.1.1 when the chamber compartments are at different depths(pressures). [99:14.2.5.2.1]

22.17.1.3

The deluge system in different compartments (locks) shall operate independently or simultaneously.[99:14.2.5.2.2]

22.17.1.4

Fixed deluge systems shall not be required in chamber compartments that are used strictly as personneltransfer compartments (locks) and for no other purposes. [99:14.2.5.2.3]

22.17.1.5*

Manual activation and deactivation deluge controls shall be located at the operator's console and in eachchamber compartment (lock) containing a deluge system. [99:14.2.5.2.4]

22.17.1.6

Controls shall be designed to prevent unintended activation. [99:14.2.5.2.4.1]

22.17.1.7

Water shall be delivered from the fixed discharge nozzles as specified in 22.17.1.9 within 3 seconds ofactivation of any affiliated deluge control. [99:14.2.5.2.5]

22.17.1.8*

Average spray density at floor level shall be not less than 2 gpm/ft2 (81.5 L/min/m2), with no floor area

larger than 10.76 ft2 (1 m2) receiving less than 1 gpm/ft2 (40.75 L/min/m2). [99:14.2.5.2.6]

22.17.1.9

Water shall be available in the deluge system to maintain the flow specified in 22.17.1.8 simultaneously ineach chamber compartment (lock) containing the deluge system for 1 minute. [99:14.2.5.2.7]

22.17.1.10

The limit on maximum extinguishment duration shall be governed by the chamber capacity (bilge capacityalso, if so equipped) or its drainage system, or both. [99:14.2.5.2.7.1]

22.17.1.11

The deluge system shall have stored pressure to operate for at least 15 seconds without electrical branchpower. [99:14.2.5.2.8]


22.18 Fixed Guideway Transit and Passenger Rail Systems.


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22.18.1.1

Other fire suppression systems, if approved, shall be permitted to be substituted for automatic sprinklersystems in the areas listed in 22.18.2.1. [130:5.7.3.4]


22.18.2.1

An automatic sprinkler protection system shall be provided in areas of stations used for concessions, instorage areas, in trash rooms, and in the steel truss area of all escalators and other similar areas withcombustible loadings, except trainways. [130:5.7.3.1]

22.18.2.2

Sprinkler protection shall be permitted to be omitted in areas of open stations remotely located from publicspaces. [130:5.7.3.1.1]

22.18.2.3

Installation of sprinkler systems shall comply with NFPA 13 or applicable local codes as required.[130:5.7.3.2]

22.18.2.4

A sprinkler system waterflow alarm and supervisory signal service shall be installed. [130:5.7.3.3]

22.19 Motion Picture and Television Production Studio Soundstages, Approved Production Facilities, andProduction Locations.

22.19.1

The requirements of NFPA 13 prohibiting obstructions to sprinkler discharge shall not be applicable ifapproved mitigation is employed. [140:4.11.1.3.1]

22.19.2

The requirements of NFPA 13 prohibiting obstructions to sprinkler discharge shall not be applicable if thebuilding sprinkler system meets the design criteria for Extra Hazard, Group 2. [140:4.11.1.3.2]

22.19.3

In any production location building protected by an existing automatic sprinkler system, where solid- orhard-ceiling sets or platforms are introduced and create an obstruction to sprinkler discharge, theprovisions of 22.19.4 or 22.19.5 shall be met. [140:5.11.3]

22.19.4*

The requirements of NFPA 13 prohibiting obstructions to sprinkler discharge shall not be applicable ifapproved mitigation is employed. [140:5.11.4]

22.19.5*

The requirements of NFPA 13 prohibiting obstructions to sprinkler discharge shall not be applicable if thebuilding sprinkler system meets the design criteria for Extra Hazard, Group 2. [140:5.11.5]

22.20 Animal Housing Facilities.


22.20.1.1 (Reserved)


22.20.2.1

Quick-response sprinklers shall be utilized in animal housing facilities. [150:9.2.3]

22.21 Water Cooling Towers.


22.21.1.1 Types of Systems.

22.21.1.1.1*

Because the counterflow tower design lends itself to either closed- or open-head systems, the followingsystems shall be permitted to be used:

(1) Wet-pipe

(2) Dry-pipe

(3) Preaction

(4) Deluge

[214:5.2.2.1]


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22.21.1.1.2*

The open-head deluge system shall be used in crossflow towers to maximize the water distribution andheat detection activation. [214:5.2.2.2]

22.21.1.2 Minimum Rate of Application.

[214:5.2.3]

22.21.1.2.1

Under the fan decks of counterflow towers, the rate of application of water shall be 0.5 gpm/ft2 (20.4mm/min), including fan opening. [214:5.2.3.1]

22.21.1.2.2

Under the fan decks of crossflow towers, the rate of application of water shall be 0.33 gpm/ft2 (13.45mm/min), including fan opening. [214:5.2.3.2]

22.21.1.2.3

Over the fill areas of crossflow towers, the rate of application of water shall be 0.5 gpm/ft2 (20.4 mm/min).[214:5.2.3.3]

22.21.1.3 Extended Fan Decks.

On towers having extended fan decks that completely enclose the distribution basin, the discharge outletsprotecting the fill area shall be located over the basin, under the extension of the fan deck. [214:5.2.4.3]

22.21.1.3.1

These discharge outlets shall be open directional spray nozzles or other approved spray devices arranged

to discharge 0.35 gpm/ft2 (14.26 mm/min) directly on the distribution basin and 0.15 gpm/ft2 (6.11mm/min) on the underside of the fan deck extension. [214:5.2.4.3.1]

22.21.1.3.2

On towers having extended fan decks that do not completely enclose the hot-water basin, outletsprotecting the fill shall be located under the distribution basin in accordance with 5.2.4.2.2 of NFPA 214.[214:5.2.4.3.2]

22.21.1.4 Combustible Fan Decks.

For deluge systems using directional spray nozzles in the pendant position, provisions shall be made to

protect the underside of a combustible fan deck at a minimum of 0.15 gpm/ft2 (6.11 mm/min), which shallbe included as part of the application rate specified in 5.2.3 of NFPA 214. [214:5.2.4.4]

22.21.1.5* Water Basin Covers.

On film-filled towers that have solid, hot-water basin covers over the complete basin, the discharge outletsprotecting the fill area shall be permitted to be located under the basin covers. [214:5.2.4.5]

22.21.1.5.1

These discharge outlets shall be open directional spray nozzles or other approved devices arranged to

discharge 0.50 gpm/ft2 (20.4 mm/min) into the distribution basin horizontally, with some of the spraysplashing up and on the underside of the water basin covers. [214:5.2.4.5.1]

22.21.1.6 Exterior Protection.

[214:5.2.10]

22.21.1.6.1

Where any combustible exterior surfaces of a tower, including the fan deck and distribution basins, areless than 100 ft (30.5 m) from significant concentrations of combustibles such as structures or piledmaterial, the combustible exposed surfaces of the tower shall be protected by an automatic water spraysystem. [214:5.2.10.1]

22.21.1.6.2

Systems for exterior protection shall be designed with the same attention and care as interior systems.[214:5.2.10.2]

22.21.1.6.2.1

Pipe sizing shall be based on hydraulic calculations. [214:5.2.10.2.1]

22.21.1.6.2.2

Water supply and discharge rate shall be based on a minimum 0.15 gpm/ft2 (6.11 mm/min) for allprotected surfaces. [214:5.2.10.2.2]

22.21.1.7 Sprinkler System Water Supply.

22.21.1.7.1 Deluge Systems.


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22.21.1.7.1.1*

Where all cells of a cooling tower are protected by a single deluge system, the water supply shall beadequate to supply all discharge outlets on that system. [214:5.6.1.1]

22.21.1.7.1.2

Where two or more deluge systems are used to protect a cooling tower and fire-resistant partitions are notprovided between the deluge systems, the water supply shall be adequate to supply all discharge outletsin the two most hydraulically demanding adjacent systems. [214:5.6.1.2]

22.21.1.7.1.3*

Where two or more deluge systems are separated by fire-resistant partitions, the water supply shall beadequate to supply all discharge outlets in the single most hydraulically demanding system. [214:5.6.1.3]

22.21.1.7.2 Wet, Dry, and Preaction Systems.

22.21.1.7.2.1*

Where each cell of the cooling tower is separated by a fire-resistant partition, the water supply shall beadequate to supply all discharge outlets in the hydraulically most demanding single cell. [214:5.6.2.1]

22.21.1.7.2.2*

Where fire-resistant partitions are not provided between each cell of a cooling tower, the water supply shallbe adequate to supply all discharge outlets in the two most hydraulically demanding adjoining cells.[214:5.6.2.2]

22.21.1.7.3 Hose Streams.

Water supplies shall be sufficient to include a minimum of 500 gpm (1892.5 L/min) for hose streams inaddition to the sprinkler requirements. [214:5.6.3]

22.21.1.7.4 Duration.

A water supply adequate for at least a 2-hour duration shall be provided for the combination of the watersupply specified in 5.6.1 or 5.6.2 of NFPA 214, plus the hose stream demand specified in 22.21.1.7.3.[214:5.6.4]


22.21.2.1* Counterflow Towers.

[214:5.2.4.1]

22.21.2.1.1

The discharge outlets shall be located under the fan deck and fan opening. [214:5.2.4.1.1]

22.21.2.1.2

Except under the fan opening, all discharge outlets shall have deflector distances installed in accordancewith Section 8.5 of NFPA 13. [214:5.2.4.1.2]

22.21.2.1.3

Closed-head discharge outlets for dry-pipe and preaction systems shall be installed in the upright positiononly. [214:5.2.4.1.3]

22.21.2.2* Crossflow Towers.

[214:5.2.4.2]

22.21.2.2.1

The discharge outlets protecting the plenum area shall be located under the fan deck and in the fanopening. [214:5.2.4.2.1]

22.21.2.2.2

Discharge outlets protecting the fill shall be located under the distribution basin on either the louver or drifteliminator side, discharging horizontally through the joist channels. [214:5.2.4.2.2]

22.21.2.2.3

Towers with an air travel dimension longer than the maximum allowable for the discharge device beingused shall have discharge devices placed on both sides of the fill area in each joist channel.[214:5.2.4.2.3.1]

22.21.2.2.4

The pressure at each discharge device shall be adequate to provide protection for half of the length of thefill measured along the air travel. [214:5.2.4.2.3.2]

22.21.2.2.5

Where joist channels are wider than 2 ft (0.6 m), more than one discharge device shall be required perjoist channel. [214:5.2.4.2.4.1]


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22.21.2.2.6

If the discharge device being used is listed for the width of the joist channel being protected, one dischargedevice per joist channel shall be permitted to be used. [214:5.2.4.2.4.2]

22.21.2.3* Extended Fan Decks.

On towers having extended fan decks that completely enclose the distribution basin, the discharge outletsprotecting the fill area shall be located over the basin, under the extension of the fan deck. [214:5.2.4.3]

22.21.2.4 Combustible Fan Decks.

For deluge systems using directional spray nozzles in the pendant position, provisions shall be made to

protect the underside of a combustible fan deck at a minimum rate of 0.15 gpm/ft2 (6.11 mm/min), whichshall be included as part of the application rate specified in 22.21.1.2. [214:5.2.4.4]

22.21.2.5* Water Basin Covers.

On film-filled towers that have solid, hot-water basin covers over the complete basin, the discharge outletsprotecting the fill area shall be permitted to be located under the basin covers. [214:5.2.4.5]

22.21.2.5.1

These discharge outlets shall be open directional spray nozzles or other approved devices arranged to

discharge 0.50 gpm/ft2 (20.4 mm/min) into the distribution basin horizontally, with some of the spraysplashing up and on the underside of the water basin covers. [214:5.2.4.5.1]

22.21.2.6 Valves.

[214:5.2.6]

22.21.2.6.1

Shutoff valves and automatically operated water control valves, if provided, shall be located as follows:

(1) Outside the fire-exposed area

(2) As close to the cooling tower as possible to minimize the amount of pipe to the discharge device

(3) Where they will be accessible during a fire emergency

[214:5.2.6.1.2]

22.21.2.6.2 Manual Release Valve.

[214:5.2.6.2]

22.21.2.6.2.1

Remote manual release valves, where required, shall be conspicuously located and accessible during afire emergency. [214:5.2.6.2.1]

22.21.2.6.2.2

Where remote manual release valves are not required, an inspector's test valve shall be provided for eachpilot-head-operated system. [214:5.2.6.2.2]

22.21.2.7 Strainers.

Strainers shall be required for systems utilizing discharge devices with waterways of less than 3⁄8 in. (9.5mm) diameter. [214:5.2.7]

22.21.2.8 Heat Detectors.

Where deluge or preaction systems are used, heat detectors shall be installed and shall be selected fromeither of the types in 5.2.8.1 or 5.2.8.2 of NFPA 214. [214:5.2.8]

22.21.2.8.1

In mechanical-draft towers, pilot line detectors shall be located under the fan deck at the circumference ofthe fan opening and under the fan opening where necessary to comply with the spacing requirements in22.21.2.8.1.1. (For extended fan decks, see 5.2.8.2.3 in NFPA 214.) [214:5.2.8.1.2.1(A)]

22.21.2.8.1.1

Pilot line detectors shall be spaced not more than 8 ft (2.4 m) apart in any direction including the fanopening. Temperature ratings shall be selected in accordance with operating conditions, but shall be noless than intermediate. [214:5.2.8.1.2.1(B)]

22.21.2.8.2

On towers having extended fan decks that completely enclose the distribution basin, electrical heatdetectors shall be located under the fan deck extension in accordance with standard, indoor-spacing rulesfor the type detectors used in accordance with NFPA 72. [214:5.2.8.2.3]


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22.21.2.8.2.1

Where the fan deck extension is 16 ft (4.9 m) or less and this dimension is the length of the joist channel,then only one row of detectors centered on and at right angles to the joist channels shall be required.Spacing between detectors shall be in accordance with NFPA 72. [214:5.2.8.2.3.1]

22.21.2.8.2.2

On towers having extended fan decks that do not completely enclose the hot-water basin, electrical heatdetectors shall not be required under the fan deck extension. [214:5.2.8.2.3.2]

22.21.2.8.3

Where electrical heat detectors are inaccessible during tower operation, an accessible test detector shallbe provided for each detection zone. [214:5.2.8.3]

22.21.2.8.4

Electrical heat detector components exposed to corrosive vapors or liquids shall be protected by materialsof construction or by protective coatings applied by the equipment manufacturer. [214:5.2.8.4]

22.21.2.9 Protection for Fan Drive Motor.

[214:5.2.9]

22.21.2.9.1

A sprinkler or spray nozzle shall be provided over each fan drive motor where the motor is located so thatit is not within the protected area of the tower. [214:5.2.9.1]

22.21.2.9.2

Where a preaction or deluge system is used, the detection system shall be extended to cover the motor.[214:5.2.9.2]

22.21.2.9.3

Provision shall be made to interlock the fan motors with the fire protection system so that the cooling towerfan motors are stopped in the cell(s) for which the system is actuated. [214:5.2.9.3]

22.21.2.9.4

Where the continued operation of the fans is vital to the process, a manual override switch shall bepermitted to be provided to reactivate the fan when it is determined that there is no fire. [214:5.2.9.4]

22.21.2.10 Corrosion Protection.

[214:5.3]

22.21.2.10.1

Piping, fittings, hangers, braces, and attachment hardware including fasteners shall be hot-dippedgalvanized steel in accordance with ASTM A 153A/153M, Standard Specification for Zinc Coating (HotDip) on Iron and Steel Hardware, or other materials having a superior corrosion resistance. [214:5.3.1]

22.21.2.10.1.1

Exposed pipe threads and bolts on fittings shall be protected against corrosion. [214:5.3.1.1]

22.21.2.10.1.2

All other components shall be corrosion resistant or protected against corrosion by a coating. [214:5.3.1.2]

22.21.2.10.2*

Wax-type coatings shall not be used on devices without fusible elements. [214:5.3.2]

22.21.2.10.3*

Special care shall be taken in the handling and installation of wax-coated or similar sprinklers to avoiddamaging the coating. [214:5.3.3]

22.21.2.10.3.1

Corrosion-resistant coatings shall not be applied to the sprinklers by anyone other than the manufacturerof the sprinklers. [214:5.3.3.1]

22.21.2.10.3.2

In all cases, any damage to the protective coating occurring at the time of installation shall be repaired atonce using only the coating of the manufacturer of the sprinkler in an approved manner, so that no part ofthe sprinkler will be exposed after the installation has been completed. [214:5.3.3.2]

22.22 Standard for the Construction and Fire Protection of Marine Terminals, Piers, and Wharves.


22.22.1.1*

Unless the requirements of 22.22.1.2 apply, automatic sprinkler systems shall be designed based uponthe design criteria for the protection of Group A plastics. [307:5.4.2.1]


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22.22.1.2

With the approval of the authority having jurisdiction, the requirements of 22.22.1.1 shall not apply tobuildings used exclusively for the handling or storage of specific cargoes and commodities that are definedas commodity classes less than Group A plastics by this standard. [307:5.4.2.2]

22.22.1.3

Buildings consistent with 22.22.1.2 shall be protected in accordance with the design criteria for theapplicable commodity as required by this standard. [307:5.4.2.3]

22.22.1.4

Buildings used for the storage of hazardous materials shall be protected in accordance with this standardand the applicable codes and standards for the type of hazardous material being stored. [307:5.4.2.4]


22.22.2.1 Piers and Wharves with Combustible Substructure.

22.22.2.1.1

Where there is danger of damage to sprinkler equipment by floating objects, physical barriers shall beprovided to exclude such objects. [307:4.3.3.1.2.2]

22.22.2.1.2

The installation requirements in 22.22.2.1.2.1, 22.22.2.1.2.1(A), and 22.22.2.1.2.1(B) are also required.

22.22.2.1.2.1* Upward Projecting Sprinklers.

Where narrow horizontal channels or spaces are caused by caps, stringers, ties, and other structuralmembers and where the standard upright sprinkler does not project sufficient water upward to extinguishor control fires on the underside of the pier or wharf deck, a sprinkler that projects water upward to wet theoverhead shall be used. [307:4.3.3.1.3.1]

(A)

Location, spacing, and deflector position shall be governed by the discharge pattern of the sprinkler andthe structure being protected. [307:4.3.3.1.3.1(A)]

(B)

The following design and installation guides shall apply where pendent sprinklers in the upright position orold-style sprinklers are to be utilized:

(1) The maximum coverage per sprinkler head shall be limited to 80 ft2 (7.5 m2).

(2) Where spacing or arrangement of stringers constitutes typical open-joist construction directlysupporting the deck, sprinkler branch lines shall be installed between the bents at right angles to thestringers and shall meet the following requirements:

(a) Spacing between branch lines shall not exceed 10 ft (3 m).

(b) Sprinklers on branch lines shall be staggered and spaced not to exceed 8 ft (2.5 m) on center.

(3)

(4) The deflectors of sprinklers on lines under stringers shall be located not less than 4 in. (100 mm) normore than 10 in. (250 mm) below the bottom plane of the stringer, and not more than 18 in. (450 mm)below the underside of the pier or wharf deck.

(5)

(6) The temperature rating of the sprinkler shall not exceed 165°F (74°C).

(7) The maximum area to be protected by any one system shall be limited to 25,000 ft2 (2325 m2).

[307:4.3.3.1.3.1(B)]

22.23 Semiconductor Fabrication Facilities.

* Where crisscross construction is involved, closer spacing of sprinklers shall be permitted asnecessary to provide wetting of the entire structure.

* The sprinkler system shall be hydraulically designed in accordance with the requirements of thisstandard and shall meet the following requirements:

(a) Sprinkler orifice shall be 1⁄2 in. (12.7 mm) and shall discharge at a minimum pressure of 12.5 psi(85 kPa).

(b) Design area shall be based upon the largest area between firestops plus an additional areaembracing at least two branch lines on opposite sides of the firestop.

(c) Minimum design area shall be not less than 5000 ft2 (465 m2).


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22.23.1.1*

Automatic sprinklers for cleanrooms or clean zones shall be installed in accordance with NFPA 13 and

shall be hydraulically designed for a density of 0.20 gpm/ft2 (8.15 L/min·m2) over a design area of 3000 ft2

(278.8 m2). [318:4.1.2.1]

22.23.1.2

Automatic sprinkler protection shall be designed and installed in the plenum and interstitial space above

cleanrooms in accordance with NFPA 13, for a density of 0.20 gpm/ft2 (8.15 L/min·m2) over a design area

of 3000 ft2 (278.8 m2). [318:4.1.2.5]

22.23.1.2.1*

Automatic sprinklers shall be permitted to be omitted if the construction and occupancy of these spacesare noncombustible. [318:4.1.2.5.1]

22.23.1.3*

Sprinklers installed in duct systems shall be hydraulically designed to provide 0.5 gpm (1.9 L/min) over anarea derived by multiplying the distance between the sprinklers in a horizontal duct by the width of theduct. [318:4.1.2.6.2]

22.23.1.3.1*

Minimum discharge shall be 20 gpm (76 L/min) per sprinkler from the five hydraulically most remotesprinklers. [318:4.1.2.6.2.1]


22.23.2.1*

Wet pipe automatic sprinkler protection shall be provided throughout facilities containing cleanrooms andclean zones. [318:4.1.1]

22.23.2.2*

Approved quick-response sprinklers shall be utilized for sprinkler installations within down-flow airstreamsin cleanrooms and clean zones. [318:4.1.2.2]

22.23.2.3*

Sprinklers shall be spaced a maximum of 20 ft (6.1 m) apart horizontally and 12 ft (3.7 m) apart vertically.[318:4.1.2.6.2.2]

22.23.2.4

A separate indicating control valve shall be provided for sprinklers installed in ductwork. [318:4.1.2.6.3]

22.23.2.5

The sprinklers shall be accessible for periodic inspection and maintenance. [318:4.1.2.6.6]

22.24 Aircraft Hangars.


Sprinkler systems installed in aircraft hangars shall comply with NFPA 409.


Sprinkler systems installed in aircraft hangars shall comply with NFPA 409.

22.25 Airport Terminal Buildings, Fueling Ramp Drainage, and Loading Walkways.


22.25.1.1

Passenger-handling areas shall be classified as Ordinary Hazard Group 1 Occupancy for the purpose ofsprinkler system design. [415:4.5.1.3]

22.25.1.2*

Baggage, package, and mail-handling areas shall be classified as Ordinary Hazard Group 2 Occupancyfor the purpose of sprinkler system design. [415:4.5.1.4]

22.25.1.3*

Other areas of the airport terminal building shall be classified based on the occupancy of the area.[415:4.5.1.5]


22.26 Aircraft Engine Test Facilities.



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22.26.1.1*

In engine test cells, the minimum design discharge density shall be 0.50 gpm/ft2 (0.34 L/sec/m2) ofprotected area. [423:7.6.3]

22.26.1.2

In engine test cells, water supplies shall be capable of meeting the largest demand at the design rate plushose stream demand for a period of 30 minutes. [423:7.6.4]

22.26.1.2.1

Hose stream demand shall be a minimum of 250 gpm (16 L/sec). [423:7.6.4.1]

22.26.1.2.2

The hydraulic calculation and the water supply shall be based on the assumption that all sprinklers in thetest cell are operating simultaneously. [423:7.6.4.2]


22.27 Advanced Light Water Reactor Electric Generating Plants.


22.27.1.1* Sprinkler System Water Supply.

The fire water supply shall be calculated on the basis of the largest expected flow rate for a period of 2hours but shall not be less than 300,000 gal (1,135,500 L), and the following criteria also shall apply:

(1) The flow rate shall be based on 500 gpm (1892.5 L/min) for manual hose streams plus the largestdesign demand of any sprinkler or fixed water spray system as determined in accordance with thisstandard, with NFPA 15, or with NFPA 804.

(2) The fire water supply shall be capable of delivering the design demand specified in 22.27.1.1(1) withthe hydraulically least demanding portion of fire main loop out of service.

[804:9.2.1]

22.27.1.2 Yard Mains.

The underground yard fire main loop shall be installed to furnish anticipated water requirements, and thefollowing criteria also shall be met:

(1) The type of pipe and water treatment shall be design considerations, with tuberculation as one of theparameters.

(2) Means for inspecting and flushing the systems shall be provided.

[804:9.4.1]

22.27.1.3 Cable Tunnels.

[804:10.4.2]

22.27.1.3.1

Automatic sprinkler systems shall be designed for a density of 0.30 gpm/ft2 (12.2 L/min·m2) for the most

remote 100 linear ft (30.5 m) of cable tunnel up to the most remote 2500 ft2 (232.2 m2). [804:10.4.2.2.2]

22.27.1.3.2

Deluge sprinkler systems or deluge spray systems shall meet the following criteria:

(1) They shall be zoned to limit the area of protection to that which the drainage system can handle withany two adjacent systems actuated.

(2) They shall be hydraulically designed with each zone calculated with the largest adjacent zoneflowing.

[804:10.4.2.2.4]


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22.27.1.4 Cable Spreading Room.

The cable spreading room shall have an automatic fixed water-based suppression system, and thefollowing criteria also shall be met:

(1) The location of sprinklers or spray nozzles shall protect cable tray arrangements to ensure watercoverage for areas that could present exposure fire hazards to the cable raceways.

(2) Automatic sprinkler systems shall be designed for a density of 0.30 gpm/ft2 (12.2 L/min·m2) over the

most remote 2500 ft2 (232.2 m2).

[804:10.4.1.1]

22.27.1.5* Beneath Turbine Generator Operating Floor.

All areas beneath the turbine generator operating floor shall be protected by an automatic sprinkler orfoam-water sprinkler system meeting the following criteria:

(1) The sprinkler system beneath the turbine generator shall be designed around obstructions fromstructural members and piping.

(2) The sprinkler system shall be designed to a minimum density of 0.30 gpm/ft2 (12.2 L/min·m2) over a

minimum application of 5000 ft2 (464.5 m2).

[804:10.8.2.1]

22.27.1.6* Turbine Generator Bearings.

[804:10.8.3]

22.27.1.6.1

Lubricating oil lines above the turbine operating floor shall be protected with an automatic sprinkler system

to a minimum density of 0.30 gpm/ft2 (12.2 L/min·m2) that covers those areas subject to oil accumulation,including the area within the turbine lagging (skirt). [804:10.8.4]

22.27.1.6.2

Where shaft-driven ventilation systems are used, an automatic preaction sprinkler system providing a

density of 0.30 gpm/ft2 (12.2 L/min·m2) over the entire area shall be provided. [804:10.8.7(2)]

22.27.1.7 Standby Emergency Diesel Generators and Combustion Turbines.

The sprinkler and water spray protection systems shall be designed for a 0.25 gpm/ft2 (10.19 L/min·m2)density over the entire area. [804:10.9.3(2)]

22.27.1.8 Fire Pump Room/House.

If sprinkler and water spray systems are provided for fire pump houses, they shall be designed for a

minimum density of 0.25 gpm/ft2 (10.19 L/min·m2) over the entire fire area. [804:10.22.2]

22.27.1.9 Auxiliary Boilers.

Sprinkler and water spray systems shall be designed for a minimum density of 0.25 gpm/ft2 (10.19

L/min·m2) over the entire area. [804:10.24.3]


22.27.2.1 Yard Mains, Hydrants, and Building Standpipes.

[804:9.4]

22.27.2.1.1

Approved visually indicating sectional control valves such as postindicator valves shall be provided toisolate portions of the main for maintenance or repair without simultaneously shutting off the supply to bothprimary and backup fire suppression systems. [804:9.4.2]

22.27.2.1.2*

Sectional control valves shall allow maintaining independence of the individual loop around each unit, andthe following also shall apply:

(1) For such installations, common water supplies shall also be permitted to be utilized.

(2) For multiple-reactor sites with widely separated plants [approaching 1 mi (1.6 km) or more], separateyard fire main loops shall be used.

[804:9.4.4]


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22.27.2.1.3

Sprinkler systems and manual hose station standpipes shall have connections to the plant undergroundwater main so that a single active failure or a crack in a moderate-energy line can be isolated so as not toimpair both the primary and the backup fire suppression systems unless otherwise permitted by thefollowing:

(1) Alternatively, headers fed from each end shall be permitted inside buildings to supply both sprinklerand standpipe systems, provided steel piping and fittings meeting the requirements of ASME B31.1,Code for Power Piping, are used for the headers (up to and including the first valve) supplying thesprinkler systems where such headers are part of the seismically analyzed hose standpipe system.

(2) Where provided, such headers shall be considered an extension of the yard main system.

(3) Each sprinkler and standpipe system shall be equipped with an outside screw and yoke (OS&Y) gatevalve or other approved shutoff valve.

[804:9.4.7]

22.27.2.2 Cable Concentrations.

The location of sprinklers or spray nozzles shall protect cable tray arrangements and possible transientcombustibles to ensure water coverage for areas that could present exposure fire hazards to the cableraceways. [804:10.4.2.2.3]

22.27.2.3 Turbine Building.

Deluge sprinkler systems or deluge spray systems shall meet the following criteria:

(1) They shall be zoned to limit the area of protection to that which the drainage system can handle withany two adjacent systems actuated.

(2) They shall be hydraulically designed with each zone calculated with the largest adjacent zoneflowing.

[804:10.4.2.2.4]

22.28 Light Water Nuclear Power Plants.


A fire protection water supply of reliability, quantity, and duration shall be provided by one of the twofollowing methods:

(1) A fire protection water supply of not less than two separate 300,000 gal (1,135,500 L) supplies shallbe provided.

(2) The 2-hour fire flow rate for 2 hours shall be calculated, and the following criteria shall be met:

(a) The flow rate shall be based on 500 gpm (1892.5 L/min) for manual hose streams plus thelargest design demand of any sprinkler or fixed water spray system(s) in the power block asdetermined in accordance with NFPA 13 or NFPA 15.

(b) The fire water supply shall be capable of delivering this design demand with the hydraulicallyleast demanding portion of fire main loop out of service.

[805:5.5.1]



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22.28.2.1

Each sprinkler and standpipe system shall be equipped with an outside screw and yoke (OS&Y) gatevalve or other approved shutoff valve. [805:5.5.17]

22.28.2.2

Sprinkler systems and manual hose station standpipes shall be connected to the plant fire protectionwater main so that a single active failure or a crack to the water supply piping to these systems can beisolated so as not to impair both the primary and backup fire suppression systems. [805:5.5.12]

22.29 Hydroelectric Generating Plants. [NFPA 851]


22.29.1.1 Hydraulic Control Systems.

Fixed fire protection for this equipment, where provided, should be as follows:

(1) Automatic wet pipe sprinkler systems utilizing a design density of 0.25 gpm/ft2 (10.2 mm/min) for theentire hazard area.

(2) Automatic foam-water sprinkler systems providing a density of 0.16 gpm/ft2 (6.5 mm/min).

[851:7.2.4]

22.29.1.2 Cable Concentrations.

Sprinkler or water spray systems should be designed for a density of 0.30 gpm/ft2 (12.2 mm/min) over

2500 ft2 (232 m2). This coverage is for area protection. Individual cable tray tier coverage could berequired based on the fire risk evaluation. [851:7.5.3]

22.29.1.3 Cable Tunnels.

Where protection is required by the fire risk evaluation, cable tunnels should be protected by automaticwater spray, automatic wet pipe sprinkler, or foam-water spray systems. Automatic sprinkler systems

should be designed for a density of 0.30 gpm/ft2 (12.2 mm/min) over 2500 ft2 (232 m2) or the most

remote 100 linear ft (30.5 m) of cable tunnel up to 2500 ft2 (232 m2). [851:7.6.1]

22.29.1.4 Emergency Generators.

Emergency generators located within main plant structures should be protected by automatic sprinkler,water spray, foam-water sprinkler, compressed air foam, or gaseous-type extinguishing systems. Sprinkler

and water spray protection systems should be designed for a 0.25 gpm/ft2 (10.2 mm/ min) density overthe fire area. [851:7.11.2]

22.29.1.5 Air Compressors.

Automatic sprinkler protection designed for a density of 0.25 gpm/ft2 (10.2 mm/min) over the postulated oilspill or compressed air foam should be considered for air compressors containing a large quantity of oil.[851:7.12]

22.29.1.6 Hydraulic Systems for Gate and Valve Operators.

Hydraulic control systems should use a listed fire-resistant fluid. Automatic sprinkler protection designed

for a density of 0.25 gpm/ ft2 (10.2 mm/min) over the fire area or compressed air foam systems should beconsidered for hydraulic systems not using a listed fire-resistant fluid. [851:7.13]

22.29.1.7 Fire Pumps.

Rooms housing diesel-driven fire pumps should be protected by automatic sprinkler, water spray,foamwater sprinkler, or compressed air foam systems. If sprinkler and water spray protection systems are

provided, they should be designed for a density of 0.25 gpm/ft2 (10.2 mm/min) over the fire area. For

automatic foam-water sprinkler systems, a density of 0.16 gpm/ft2 (6.5 mm/min) should be provided.[851:7.14]


22.29.2.1 Hydraulic Control Systems.

Fire extinguishing systems, where installed for lube oil systems employing combustible-type oil, shouldinclude protection for the reservoirs, pumps, and all oil lines, especially where unions exist on piping andbeneath any shielded area where flowing oil can collect. Facilities not provided with curbs or drains shouldextend coverage for a distance of 20 ft (6 m) from the oil lines, when measured from the outermost oil line.[851:7.2.7]


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22.30 Code for the Protection of Cultural Resource Properties — Museums, Libraries, and Places ofWorship. [NFPA 909]


22.30.1.1*

Standard-response sprinklers shall be permitted for use in light-hazard areas. [909:12.4.4.2]

22.30.1.2*

Preaction and dry pipe systems shall be designed to minimize the risk of corrosion in accordance with therequirements of 9.12.12.3.1 through 9.12.12.3.5 of NFPA 909. [909:9.12.12.3]

22.30.1.3 System Design for Museums, Libraries, and Their Collections in Compact Storage.

22.30.1.3.1*

The design shall recognize the nature of the potential threat of a fire that originates in a compact mobilestorage unit, where fuel loads are invariably large and fire growth is significantly different from that in otherkinds of storage. [909:9.12.23.4.1.3]

22.30.1.3.2*

The automatic fire suppression system, the compact storage system, and the storagecompartmentalization features shall be designed to limit fire damage in accordance with the facility’s firesafety objectives. [909:9.12.23.4.1.4(A)]

22.30.1.3.3

Design calculations shall include the number and size of the storage modules, the separation providedbetween the modules end-to-end and back-to-back, and the type of material being stored.[909:9.12.23.4.1.4(B)]

22.30.1.3.4

Where the automatic fire suppression is provided by automatic fire sprinkler systems, the systems shall bewet pipe, single interlock pre-action, or single non-interlock pre-action systems. [909:9.12.23.4.1.4(C)]

22.30.1.3.5

Dry pipe or double-interlock pre-action systems shall not be installed in compact storage areas.[909:9.12.23.4.1.4(D)]

22.30.1.3.6

Where compact storage is installed in an existing storage area, the existing automatic fire detection andfire suppression systems shall be modified as required to accommodate the increased fire loading.[909:9.12.23.4.1.4(E)]


22.30.2.1*

Branch lines shall be pitched at least 1⁄2 in. per 10 ft (4 mm/m), and mains shall be pitched at least 1⁄4 in.per 10 ft (2 mm/m). [909:9.12.12.3.1]

22.30.2.2*

Auxiliary drains shall be provided at all low points in accordance with NFPA 13 requirements for dry pipesystems and preaction systems subject to freezing. [909:9.12.12.3.2.1]

22.30.2.3*

Where steel pipe is used in dry pipe and preaction systems, the provisions of NFPA 13 shall be appliedassuming water supplies and environmental conditions that contribute to unusual corrosive properties,and a plan shall be developed to treat the system using one of the following methods:

(1) Install a water pipe that is corrosion resistant

(2) Treat all water that enters the system using an approved corrosion inhibitor

(3) Implement an approved plan for monitoring the interior conditions of the pipe at established intervalsand locations.

[909:9.12.12.3.3]

22.31 National Electrical Code.




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22.31.2.1 Dedicated Electrical Space.

The space equal to the width and depth of the equipment and extending from the floor to a height of 6 ft(1.8 m) above the equipment or to the structural ceiling, whichever is lower, shall be dedicated to theelectrical installation. No piping, ducts, leak protection apparatus, or other equipment foreign to theelectrical installation shall be located in this zone.

Exception: Suspended ceilings with removable panels shall be permitted within the 1.8-m (6-ft) zone.[70:110.26(E)(1)(a)]

22.31.2.2

The area above the dedicated space required by 22.31.2.1 shall be permitted to contain foreign systems,provided protection is installed to avoid damage to the electrical equipment from condensation, leaks, orbreaks in such foreign systems. [70:110.26(E)(1)(b)]

22.31.2.3*

Sprinkler protection shall be permitted for the dedicated space where the piping complies with this section.[70:110.26(E)(1)(c)]

22.32 Fire Protection of Telecommunication Facilities.



22.32.2.1

All piping for dry pipe and pre-action sprinkler systems shall be installed with a pitch in accordance withNFPA 13 whether or not the piping is subjected to freezing conditions. [76:8.6.2.2.2]

22.33 Exhaust Systems for Air Conveying of Vapors, Gases, Mists, and Noncombustible ParticulateSolids.


22.33.1.1

When a sprinkler system is installed, means shall be provided to prevent water accumulation in the duct orflow of water back to a process subject that could be damaged by water. [91:9.2]


22.34 Hypobaric Facilities.


22.34.1.1

A fire suppression system consisting of independently supplied and operating handline and fixeddeluge-type water spray systems shall be installed. [99B:4.5.1.5]

22.34.1.2

Design of the fire suppression system shall be such that failure of components in either the handline ordeluge system will not render the other system inoperative. [99B:4.5.1.6]

22.34.1.3

System design shall be such that activation of either the handline or the deluge system shall automaticallycause the following:

(1) Visual and audio alarm indicators shall be activated at the chamber operator's console.

(2) All ungrounded electrical leads for power and lighting circuits contained inside the chamber shall bedisconnected.

(3) Emergency lighting and communication, where used, shall be activated.

[99B:4.5.1.7]

22.34.1.4

Intrinsically safe circuits, including sound-powered communications, shall be permitted to remainconnected when either the handline or deluge system is activated. [99B:4.5.1.8]

22.34.1.5

Control circuitry and other electrical equipment involved in the fire detection and suppression system shallbe powered from the critical branch of the emergency electrical system and connected to theuninterruptible power supply (UPS). [99B:4.5.1.11]

22.34.1.6

In chambers that consist of more than one compartment, the deluge system shall operate independentlyor simultaneously even if the compartments are at different pressures (altitudes). [99B:4.5.2.2]


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22.34.1.7

Fixed deluge systems shall not be required in chamber compartments that are used strictly as personneltransfer compartments and for no other purpose. [99B:4.5.2.3]

22.34.1.8

Manual activation and deactivation deluge controls shall be located at the operator's console and in eachchamber compartment containing a deluge system. [99B:4.5.2.4]

22.34.1.9

Controls shall be designed to prevent unintended activation. [99B:4.5.2.4.1]

22.34.1.10

Water shall be delivered from the fixed discharge nozzles of the deluge system within 3 seconds ofactivation of any affiliated deluge control. [99B:4.5.2.5]

22.34.1.11*

Total water demand shall be determined by multiplying the total chamber floor area by 7.5 gpm/ft2 (305.6

L/min/m2). [99B:4.5.2.5.1]

22.34.1.12

The minimum operating pressure at the nozzle shall be 30 psi (206 kPa). [99B:4.5.2.5.2]

22.34.1.13

The water supply shall be constantly and fully charged. [99B:4.5.2.6]

22.34.1.14

The water supply pressure shall be constantly monitored and an interlock shall prevent chamber operationif water supply pressure has fallen 10 percent below normal operating charge pressure. [99B:4.5.2.7]

22.34.1.15

There shall be water in the deluge system to maintain the flow specified in 22.34.1.11 simultaneously ineach chamber containing the deluge system for 1 minute. [99B:4.5.2.8]

22.34.1.16

The limit on maximum extinguishment duration shall be governed by the chamber capacity (bilge capacityalso, if so equipped) and/or its drainage system. [99B:4.5.2.9]

22.34.1.17

The deluge system shall have stored pressure to operate for at least 15 seconds without electrical branchpower. [99B:4.5.2.10]


22.35 Coal Mines.


22.35.1.1 Underground Mining Operations.

22.35.1.1.1*

Fire sprinkler systems for underground mining operations shall be designed and installed in accordancewith NFPA 120.

22.35.1.2 Coal Preparation Plants and Crusher Buildings.

22.35.1.2.1

When automatic sprinkler systems are to be supplied through the standpipe system, hydraulic calculationsshall be used to ensure that the piping and the water supply meet the hose and automatic sprinklerdemands simultaneously. [120:6.3.2.3.2]

22.35.1.3 Underground Conveyors.

22.35.1.3.1

The application rate shall not be less than 10.2 L/min/m2 (0.25 gpm/ft2) of the top surface of the top belt.[120:9.4.6.4]

22.35.1.3.2

The water supply shall be free of excessive sediment and corrosives and provide the required flow for notless than 10 minutes. A strainer with a flush-out connection and manual shutoff valve shall be provided.[120:9.4.6.6]

22.35.1.3.3

The system shall be interlocked to shut down the conveyor and provide an audible and a visual alarm.[120:9.4.6.8]


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22.35.1.3.4

Fire suppression systems shall also comply with 22.35.1.1.1. [120:9.4.6.10]

22.35.1.3.5

Sprinkler systems shall meet the following requirements:

(1) The sprinklers shall be installed in accordance with NFPA 13 as far as practical, and shall havecomponents that have been listed.

(2) The water supply shall be capable of supplying a constant flow of water with all heads functioning fora period of 10 minutes.

(3) The sprinkler head activation temperature shall not be less than 65.6°C (150°F) or greater than148.9°C (300°F).

[120:9.4.6.13]


22.35.2.1 Underground Conveyors.

22.35.2.1.1

Deluge water spray systems, foam systems, closed-head sprinkler systems, or dry-chemical systemsautomatically actuated by rise in temperature shall be installed at main and secondary belt conveyordrives. [120:9.4.6.1]

22.35.2.1.2

Fire suppression systems shall extend to the drive areas of belt conveyors, including drive motor(s),reducer, head pulley, and belt storage unit (takeup), including any hydraulic power unit; its electricalcontrols; and the top and bottom of the first 15.2 m (50 ft) of belt from the drive on the downwind side.[120:9.4.6.2]

22.35.2.1.3

Piping for the deluge, foam, or closed-head sprinkler system shall be metal and listed for sprinklerapplications. [120:9.4.6.3]

22.35.2.1.4

The discharge shall be directed at both the upper and the bottom surface of the top belt and the uppersurface of the bottom belt. [120:9.4.6.5]

22.35.2.1.5

Maximum distance between nozzles on a branch line shall not exceed 2.4 m (8 ft). [120:9.4.6.7]

22.35.2.1.6

The components of the system shall be located so as to minimize the possibility of damage by roof fall orby the moving belt and its load. [120:9.4.6.9]

22.35.2.1.7

Deluge water spray systems shall meet the requirements of 22.35.2.1.7.1 through 22.35.2.1.7.5.[120:9.4.6.11]

22.35.2.1.7.1

The system shall be activated by heat detectors. [120:9.4.6.11.1]

22.35.2.1.7.2

Heat detectors shall be located at the belt drive, hydraulic takeup unit (unless fire-resistive fluid is used),discharge roller, and the roof above the conveyor. [120:9.4.6.11.1.1]

22.35.2.1.7.3

Heat detectors at the roof line should be spaced 2.4 m to 3.0 m (8 ft to 10 ft) apart along the entire lengthof the protected area of the belt. [120:9.4.6.11.1.2]

22.35.2.1.7.4

The nozzles shall be full cone, corrosion resistant, and provided with blow-off dust covers. [120:9.4.6.11.2]

22.35.2.1.7.5

A closed sprinkler head shall be used over the electrical controls. [120:9.4.6.11.3]

22.35.2.2 Mine Surface Buildings.

22.35.2.2.1

If sprinklers are installed, waterflow, valve tamper, and low building temperature alarms shall be provided.[120:8.6.1.2]

22.36 Metal/Nonmetal Mining and Metal Mineral Processing Facilities.



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22.36.1.1 Water Supplies.

22.36.1.1.1

When automatic sprinkler systems are supplied through the hand hose line standpipe system, hydrauliccalculations shall be used to ensure that the piping and water supply will supply the hose and automaticsprinkler demands simultaneously. [122:6.2.3]

22.36.1.1.2

Where a fire water supply [for a surface mineral processing plant] is required by the risk assessment,capacity and availability shall provide the water demand for fire-fighting purposes, including hose andsprinkler systems, for a minimum duration of 2 hours. [122:13.7.2]

22.36.1.2*

Where provided, automatic sprinkler systems installed for the protection of flammable liquid or diesel fuelstorage areas shall be of the foam-water type. [122:11.3.1]

22.36.1.3 New Solvent Extraction (SX) Facilities.

22.36.1.3.1

Fixed fire suppression shall be provided for the following SX facility areas and equipment:

(1) Buildings housing SX processes

(2) Interior of all mixer-settler vessels/cells

(3) Crud tanks that include treatment filters and centrifuges

(4) Coalescers

(5) Along launders and weirs outside of mixer-settler vessels

(6) Inside pipe trenches carrying solvents

(7) Inside organic solvent and diluent tanks

(8) Inside dikes enclosing organic solvent storage tanks

(9) Over organic solvent pumps

(10) Over elevated pipe racks carrying organic solvents in plastic pipes

(11) Other areas handling, processing, or exposed to flammable or combustible liquids

[122:13.19.1]

22.36.1.3.2*

Fire suppression for applications in 22.36.1.3.1 shall be water, foam, dry chemical, or water mist.[122:13.19.1.1]

22.36.1.3.3*

Design of fire suppression systems in 22.36.1.3.1 shall be based on criteria set forth in NFPA 11; NFPA15; NFPA 16; and NFPA 17. [122:13.19.1.2]

22.36.1.3.4*

Actuation of fire suppression systems in 22.36.1.3.1 shall be automatic. [122:13.19.1.3]

22.36.1.3.5

As exposure protection, automatic water-only deluge (open-head) sprinkler systems shall be providedbetween mixer-settler trains if spaced closer than 15.24 m (50 ft) from each other. [122:13.19.2]

22.36.1.3.6

As exposure protection, automatic water-only deluge sprinkler systems shall be provided around theexterior perimeter of organic solvent tanks if spaced closer than 15.24 m (50 ft) from each other.[122:13.19.3]

22.36.1.3.7

As exposure protection, automatic fire suppression shall be provided over other critical equipment (i.e.,transformers) or outside along important building walls [i.e., motor control center (MCC) rooms] that arewithin 15.24 m (50 ft) of a solvent fire area. [122:13.19.4]

22.36.1.3.8

Hydraulic design of automatic fire suppression systems in 22.36.1.3.1 shall include the simultaneousoperation of all fire protection systems associated with a single (multi-cell) train. [122:13.19.5]


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22.36.1.3.9

The total flow rate of foam application and water associated with the discharge of automatic fireextinguishing systems, fixed monitors, and hydrants shall determine the total volume of fire waterrequired. [122:13.19.6]


22.37 Hazardous Materials Code.


Sprinkler system discharge criteria for the protection of hazardous materials shall comply with NFPA 400.

22.37.1.1 Requirements for Occupancies Storing Quantities of Hazardous Materials Exceeding theMaximum Allowable Quantities per Control Area for High Hazard Contents.

The design of the sprinkler system shall be not less than ordinary hazard Group 2 in accordance withNFPA 13, except as follows:

(1) Where different requirements are specified in Chapters 11 through 21 of NFPA 400

(2) Where the materials or storage arrangement requires a higher level of sprinkler system protection inaccordance with nationally recognized standards

(3) Where approved alternative automatic fire extinguishing systems are permitted

[400:6.2.1.1.1]

22.37.1.2 General Requirements for Storage of Ammonium Nitrate Solids and Liquids.

Sprinkler systems shall be of the approved type and designed and installed in accordance with NFPA 13,and the following:

(1) Ammonium nitrate in noncombustible or combustible containers (paper bags or noncombustiblecontainers with removable combustible liners) shall be designated as a Class I commodity.

(2) Where contained in plastic containers, ammonium nitrate shall be designated as a Class IIcommodity.

(3) Where contained in fiber packs or noncombustible containers in combustible packaging, ammoniumnitrate shall be designated as a Class III commodity.

[400:11.2.6.1.3 ]

22.37.1.3 General Requirements for Storage of Organic Peroxide Formulations.

22.37.1.3.1

Where required by other provisions of this code, automatic sprinklers and water spray systems shall bedesigned and installed according to the requirements of NFPA 13 and NFPA 15 and shall provide thefollowing discharge densities:

(1) Class I — 0.50 gpm/ft2 (20.4 L/min/m2)

(2) Class II — 0.40 gpm/ft2 (16.3 L/min/m2)

(3) Class III — 0.30 gpm/ft2 (12.2 L/min/m2)

(4) Class IV — 0.25 gpm/ft2 (10.2 L/min/m2)

[400:14.2.6.1]

22.37.1.3.2

The system shall be designed as follows:

(1) It shall provide the required density over a 3000 ft2 (280 m2) area for areas protected by a wet pipe

sprinkler system or 3900 ft2 (360 m2) for areas protected by a dry pipe sprinkler system.

(2) The entire area of any building of less than 3000 ft2 (280 m2) shall be used as the area ofapplication.

[400:14.2.6.2]


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22.37.1.3.3

Where required for detached storage buildings containing Class I organic peroxide formulations inquantities exceeding 2000 lb (907 kg), automatic sprinkler protection shall be open-head deluge-type,designed and installed in accordance with NFPA 13. [400:14.2.6.3]

22.37.1.4 Indoor Storage of Oxidizer Solids and Liquids.

22.37.1.4.1

Sprinkler protection for Class 2 oxidizers shall be designed in accordance with Table 22.37.1.4.1.[400:15.3.2.3.4.1 ]

Table 22.37.1.4.1 Ceiling Sprinkler Protection for Class 2 Oxidizers in Palletized or Bulk and RackStorage Areas

Type ofStorage

Ceiling Sprinklers

In-Rack Sprinklers

StorageHeight Density

Area ofApplication

ft m gpm/ft2 L/min/m2 ft2 m2

Palletized orbulk

8 2.4 0.20 8 3750 348 —

Palletized orbulk

12 3.7 0.35 14 3750 348 —

Rack 12 3.7 0.20 8 3750 348One line above each level ofstorage, except the top level

Rack 16 4.9 0.30 12 2000 186One line above each level ofstorage, except the top level

[400: Table 15.3.2.3.2.10(B)]

22.37.1.4.2

Ceiling sprinklers shall be high-temperature sprinklers. [400:15.3.2.3.4.2]

22.37.1.4.3 Storage Protection for Class 2 Oxidizers with In-Rack Sprinklers.

(A)

In-rack sprinklers shall be quick-response sprinklers with an ordinary-temperature rating and have aK-factor of not less than K = 8.0. [400:15.3.2.3.4.3(A)]

(B)

In-rack sprinklers shall be designed to provide 25 psi (172 kPa) for the six most hydraulically remotesprinklers on each level. [400:15.3.2.3.4.3(B)]

(C)

The in-rack sprinklers shall be 8 ft to 10 ft (2.4 m to 3.0 m) spacings in the longitudinal flue space at theintersection of the transverse flue spaces. [400:15.3.2.3.4.3(C)]

22.37.1.4.4 Sprinkler Criteria for Class 3 Oxidizers.

22.37.1.4.4.1 Class 3 Oxidizers Less than 2300 lb (1043 kg).

(A)

Sprinkler design criteria for buildings that require sprinkler protection and contain total quantities of Class3 oxidizers less than 2300 lb (1043 kg) shall be in accordance with the requirements of 22.37.1.4.4.1(B).[400:15.3.2.4.13.1(A)]


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(B)

Facilities that require sprinkler protection and contain total quantities of Class 3 oxidizers greater than 200lb (91 kg), but less than 2300 lb (1043 kg), shall follow the sprinkler design criteria in Table22.37.1.4.4.1(B). [400:15.3.2.4.13.1(B)]

Table 22.37.1.4.4.1(B) Sprinkler Protection of Class 3 Oxidizers Stored in Total Quantities Greater than200 lb (91 kg) but Less than 2300 lb (1043 kg)

StorageParameters Shelf Bulk or Pile Bulk or Pile Rack

Maximumstorage height

6 ft (1.8 m) 5 ft (1.5 m) 10 ft (3 m) 10 ft (3 m)

Maximum ceilingheight

25 ft (7.6 m) 25 ft (7.6 m) 25 ft (7.6 m) NA

Aisles — pileseparation

4 ft (1.2 m) min.clear aisles

4 ft (1.2 m) min. clearaisles

8 ft (2.4 m) min.clear aisles

8 ft (2.4 m) min. clearaisles

Ceiling designcriteria

0.45 gpm/ft2/2000

ft20.35 gpm/ft2/or 5000

ft2 or 0.6 gpm/2000 ft20.65 gpm/ft2/5000

ft20.35 gpm/ft2/or 5000 ft2

or 0.6 gpm/ft2/2000 ft2

In-rack sprinklers NP NP NA See 15.3.2.4.12.2.

Hose streamdemand

500 gpm 500 gpm 500 gpm 500 gpm

Duration 120 minutes 120 minutes 120 minutes 120 minutes

For SI units, 1 gal = 3.79 L. NA: Not applicable. NP: Not permitted.

[400: Table 15.3.2.4.12.1(B)]

22.37.1.4.4.2 Storage Protection for Class 3 Oxidizers In-Rack Sprinkler Criteria.

(A)

Where required by Table 22.37.1.4.4.1(B) , in-rack sprinkler protection shall be as follows:

(1) In-rack sprinklers shall be installed above every level of oxidizer storage.

(2) In-rack sprinklers shall be spaced at maximum 4 ft (1.2 m) intervals to provide one sprinkler in eachflue space.

(3) In-rack sprinklers shall be quick-response sprinklers with an ordinary-temperature rating and have aK-factor of not less than K = 8.0.

(4) In-rack sprinklers shall be designed to provide 25 psi (172 kPa) for the six most hydraulically remotesprinklers on each level.

[400:15.3.2.4.13.3(A)]


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22.37.1.4.4.3 Class 3 Oxidizers Greater than or Equal to 2300 lb (1043 kg).

The sprinkler protection shall be in accordance with Table 22.37.1.4.4.3. [400:15.3.2.4.13.4(B)]

Table 22.37.1.4.4.3 Sprinkler Protection of Class 3 Oxidizers Stored in Total Quantities of Greater than orEqual to 2300 lb (1043 kg)

StorageParameters Bulk or Pile Rack

Maximum storageheight

5 ft (1.5 m) 10 ft (3 m)

Maximum ceilingheight

25 ft (7.6 m) NP

Aisles — pileseparation

8 ft (2.4 m) min. clear aisles 8 ft (2.4 m) min. clear aisles

Ceiling designcriteria

0.35 gpm/ft2/5000 ft2 (1.32

L/min/m2/464.5 m2)

Predominant for other commodities but not lessthan ordinary hazard Group II

In-rack sprinklers NP See 15.3.2.4.12.4

Hose streamdemand

500 gpm (1893 L/min) 500 gpm (1893 L/min)

Duration 120 minutes 120 minutes

NP: Not permitted.

[400: Table 15.3.2.4.12.3(B)]

22.37.1.4.4.4 Special In-Rack Sprinkler Protection for Class 3 Oxidizers.


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(A)

Where required by Table 22.37.1.4.4.3, special in-rack sprinkler protection shall be as shown in Figure22.37.1.4.4.4(A). [400:15.3.2.4.13.5(A)]

Figure 22.37.1.4.4.4(A) Arrangement of Barriers and In-Rack Sprinklers for Special FireProtection Provisions. [400: Figure 15.3.2.4.13.5(A)]

(B)

In-rack automatic sprinklers shall be provided under each horizontal barrier and arranged in accordancewith 22.37.1.4.4.4(C) through 22.37.1.4.4.4(I) . [400:15.3.2.4.13.5(K)]

(C)

For double-row racks, two lines of in-rack sprinklers shall be provided between the face of the rack andthe longitudinal vertical barrier located in the center of the rack. [400:15.3.2.4.13.5(L)]

(D)

For single-row racks, two lines of in-rack sprinklers shall be provided between each rack face.[400:15.3.2.4.13.5(M)]

(E)

Three in-rack sprinklers shall be provided on each in-rack sprinkler line as follows:

(1) Two sprinklers on each line shall be spaced approximately 11⁄2 in. (38.1 mm) from each transversevertical barrier.

(2) One in-rack sprinkler on each in-rack sprinkler line shall be located approximately equidistantbetween the transverse vertical barriers.

[400:15.3.2.4.13.5(N)]

(F)

In-rack sprinklers shall be of the upright or pendent type, with the fusible element located no more than 6in. (152.4 mm) from the horizontal barrier. [400:15.3.2.4.13.5(O)]

(G)

In-rack sprinklers shall be K = 8.0, quick-response, ordinary-temperature-rated sprinklers.[400:15.3.2.4.13.5(Q)]


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(H)

The in-rack sprinkler system shall be designed to supply 6 sprinklers on each line, with a total of 12sprinklers operating at gauge pressure of 25 psi (172 kPa). [400:15.3.2.4.13.5(R)]

(I)

The design of the in-rack sprinkler system shall be independent of, and shall not be required to bebalanced with, ceiling sprinkler systems. [400:15.3.2.4.13.5(S)]

22.37.1.4.4.5 Sprinkler Criteria for Class 4 Oxidizers.

(A)

Sprinkler protection for Class 4 oxidizers shall be installed on a deluge sprinkler system to provide water

density of 0.35 gpm/ft2 (14.4 L/min/m2) over the entire storage area. [400:15.3.2.5.4.6(A)]

(B)

Sprinkler protection shall be installed in accordance with NFPA 13. [400:15.3.2.5.4.6(B)]


(Reserved)


CC NOTE: The following CC Note No. 16 appeared in the First Draft Report as Public Input No. 58 and Committee Input No. 263.

The extract task group and SSD TC should look at the the extracted information and determine if the requirements should be applied irrespective of the extracted information is applicable in that jurisdiction. This may include a review of the language under the "application" section of NFPA 22.Each section should be reviewed for the individual application of the language within the framework of NFPA 13.

Related Item

Public Input No. 58-NFPA 13-2013 [Chapter 22]

Committee Input No. 263-NFPA 13-2013 [Chapter 22]




Street Address:

City:

State:

Zip:



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23.3.5 Computer-Generated Hydraulic Reports.

23.3.5.1 * General.

23.3.5.1.1

Hydraulic calculations shall be prepared on form sheets that include a summary sheet, a graph sheet, awater supply analysis, a node analysis, and detailed worksheets.


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23.3.5.1.2


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The data shall be presented in the order shown in Figure 23.3.5.1.2(a) through Figure 23.3.5.1.2(d) .

Figure 23.3.5.1.2(a) Summary Sheet.

Figure 23.3.5.1.2(b) Graph Sheet.

Figure 23.3.5.1.2(c) Supply and Node Analysis Sheet.


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Figure 23.3.5.1.2(d) Detailed Worksheet.


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23.3.5.2 Summary Sheet.

The summary sheet as shown in Figure 23.3.5.1.2(a) shall contain the following information, whereapplicable:

(1) Project name and date

(2) Location (including street address)

(3) Owner or expected occupant of space being designed

(4) Name, address, and phone number of installing contractor

(5) Name and phone number of designer

(6) Authority having jurisdiction

(7) Standard or document system is being designed to, including the edition of the document

(8) Design area number and location

(9) Drawing or sheet number where design area is located

(10) Occupancy or commodity classification and information

(11) For storage applications (including miscellaneous), additional information including storage height,ceiling height, storage configuration, aisle width, orientation of upright or pendent, sprinkler K-factorand sprinkler temperature, and the table and or curve utilized in the design

(12) System type, including the system volume with type of protection system indicated in the notes

(13) Sprinkler type, including coverage and response type.

(14) Slope of roof or ceiling within the design area

(15) System design requirements, as follows:

(a) Design area of application, ft2 (m2)

(b) Minimum rate of water application (density), gpm/ft2 (mm/min)

(c) Area per sprinkler, ft2 (m2)

(d) Number of sprinklers calculated

(16) Total water requirements as calculated, including allowance for inside hose, outside hydrants, watercurtain, and exposure sprinklers, and allowance for in-rack sprinklers, gpm (L/min)

(17) Ceiling height if used for quick response sprinkler reduction

(18) Elevation of highest calculated sprinkler

(19) Water supply information, including the following:

(a) Date and time of test

(b) Location of the test and flow hydrant(s)

(c) Source of the water for the flow test

(d) Elevation of the test hydrant relative to the finished floor

(e) Size of fire pump, gpm @ psi

(f) Size of on-site water tank

(20) Notes that include peaking information for calculations performed by a computer program, type ofpreaction system, limitations (dimension, flow, and pressure) on extended-coverage or other listedspecial sprinklers, system type, including the system volume


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23.3.5.3 Graph Sheet.

A graphic representation of the complete hydraulic calculation shall be plotted on semiexponential graph

paper (Q 1.85) as shown in Figure 23.3.5.1.2(b) and shall include the following:

(1) Water supply curve

(2) Sprinkler system demand

(3) Hose demand (where applicable)

(4) In-rack sprinkler demand (where applicable)

(5) Additional pressures supplied by a fire pump or other source (when applicable)

23.3.5.4 Supply Analysis.

Information summarized from the graph sheet as shown in Figure 23.3.5.1.2(c) shall include the following:

(1) Node tag at the source

(2) Static pressure [psi (bar)] available at the source

(3) Residual pressure [psi (bar)] available at the source

(4) Total flow [gpm (L/min)] available at the source

(5) Available pressure [psi (bar)] at the source when the total calculated demand is flowing

(6) Total calculated demand [gpm (L/min)] at the source

(7) Required pressure [psi (bar)] when flowing total calculated demand

23.3.5.5 Node Analysis.

Organized information as shown in Figure 23.3.5.1.2(c) regarding the node tags given to each hydraulicreference point on the system as indicated on the shop drawings shall include the following information:

(1) Node tag for each specific point on the system used in the hydraulic calculations

(2) Elevation in ft (m) of each node tag

(3) K-factor of flowing nodes (such as sprinklers)

(4) Hose allowance in gpm (L/min) requirements for the node tag

(5) Pressure in psi (bar) at the node

(6) Discharge in gpm (L/min) calculated at the node

(7) Notes that indicate any special requirements for the node


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23.3.5.6 Detailed Worksheets.

Detailed worksheets as shown in Figure 23.3.5.1.2(d) or computer printout sheets shall contain thefollowing information:

(1) Sheet number

(2) Hydraulic reference points used in each step

(3) Elevation in ft (m) at each hydraulic reference point

(4) Sprinkler description and discharge constant (K) for the flowing reference point

(5) Flow in gpm (L/min) for the flowing reference point (when applicable)

(6) Total flow in gpm (L/min) through each step

(7) Nominal pipe size in in. (mm)

(8) Actual internal diameter of pipe in in. (mm)

(9) Quantity and length in ft (m) of each type of fitting and device

(10) Pipe lengths in ft (m), center-to-center of fittings

(11) Equivalent pipe lengths in ft (m) of fittings and devices for the step

(12) Total equivalent length in ft (m) of pipes and fitting for the step

(13) C-factor used in each step

(14) Friction loss in psi/ft (bar/m) of pipe

(15) Sum of the pressures from the previous step (starting pressure at beginning)

(16) Elevation head in psi (bar) between reference points

(17) Total friction loss in psi (bar) between reference points

(18) Required pressure in psi (bar) at each reference point

(19) Notes and other information shall include the following:

(a) Velocity pressure and normal pressure if included in calculations

(b) In-rack sprinkler demand balanced to ceiling demand

(c) Notes to indicate starting points or reference to other sheets or to clarify data shown

(d) Diagram to accompany gridded system calculations to indicate flow quantities and directions forlines with sprinklers operating in the remote area

(e) Combined K-factor calculations for sprinklers on drops, armovers, or sprigs where calculationsdo not begin at the sprinkler

(f) The pressure [psi/(bar)] loss assigned the backflow device when included on a system

(g) Friction factor and Reynold's number when the Darcy–Weisbach equation is used


The standard forms for manual calculations and computer generated forms should be combined. There is no need to have separate reports for hand calculations versus computer generated calculations.

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First Revision No. 308-NFPA 13-2013 [Section No. 23.3.5.1.2]





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23.4.1.2

Pipe sizes shall be no less than 1 in. (25 mm) nominal for ferrous black or galvanized steel piping and 3⁄4in. (20 mm) nominal for copper tubing or brass, stainless steel piping or nonmetallic piping listed for firesprinkler service unless permitted by 8.15.20.4 and 8.15.20.5.





As per Section 6.3, brass and stainless steel piping is now recognized in the standard. Therefore, this section should be further modified to indicate the minimum allowable pipe sizes for those materials as well.

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23.4.1.4 Velocity Limitations.

Unless

Unless required by other NFPA standards, the velocity of water flow shall not be limited when hydrauliccalculations are performed using the Hazen Williams

and/

or Darcy Weisbach formulas.


Editorial deleting the "and/or". Also, a title should not be provided for this paragraph unless it titles are provided for the other paragraphs at this same level in the numbering system.

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23.4.4.8.1

Pipe friction loss shall be calculated in accordance with the Hazen–Williams formula with C values fromTable 23.4.4.8.1, as follows:

(1) Pipe, fittings, and devices such as valves, meters, flow switches in pipes 2 in. or less in size, andstrainers shall be included, and elevation changes that affect the sprinkler discharge shall becalculated.

(2) Tie-in drain piping shall not be included in the hydraulic calculations.

(3) The loss for a tee or a cross shall be calculated where flow direction change occurs based on theequivalent pipe length of the piping segment in which the fitting is included.

(4) The tee at the top of a riser nipple shall be included in the branch line, the tee at the base of a risernipple shall be included in the riser nipple, and the tee or cross at a cross main–feed main junctionshall be included in the cross main.

(5) Fitting loss for straight-through flow in a tee or cross shall not be included.

(6) The loss of reducing elbows based on the equivalent feet value of the smallest outlet shall becalculated.

(7) The equivalent feet value for the standard elbow on any abrupt 90-degree turn, such as thescrew-type pattern shall be used.

(8) The equivalent feet value for the long-turn elbow on any sweeping 90-degree turn, such as a flanged,welded, or mechanical joint-elbow typeshall be used. (See Table 23.4.3.1.1.)

(9) Friction loss shall be excluded for the fitting directly connected to a sprinkler.

(10) Losses through a pressure-reducing valve shall be included based on the normal inlet pressurecondition. Pressure loss data from the manufacturer's literature shall be used.

Table 23.4.4.8.1 Hazen–Williams C Values

Pipe or Tube C Value*

Unlined cast or ductile iron 100

Black steel (dry systems including preaction) 100

Black steel (wet systems including deluge) 120

Galvanized steel (

dry

all systems including

preaction) 100 Galvanized steel (wet systems including

deluge) 120

Plastic (listed) all 150

Cement-lined cast- or ductile iron 140

Copper tube, Brass or stainless steel 150

Asbestos cement 140

Concrete 140

*The authority having jurisdiction is permitted to allow other C values.


The reason for rejection was that no supporting data was submitted. The same data was submitted on this public input as submitted with the proposal to the 2013 edition. As stated in the PI, it is inappropriate to attempt to


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discourage the use of galvanized by changing the C-factor. I agree with the concerns about integrity issues caused by LOCALIZED corrosion in galvanized pipe. That’s why I submitted pubic input that would not allow its use in dry-pipe and preaction systems (PI’s 111 and 112). They were rejected. Since the Installation TC continues to allow the use of galvanized pipe and there is no data showing that galvanized pipe does not provide a hydraulic benefit, the C-factor should be restored to 120.

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23.7.2.6 *

Where the total number of sprinklers above and below a ceiling exceeds the number specified in Table

23.7.2.4 for 2 . 1 for 2 1 ⁄2 in. (64 mm) pipe, the pipe supplying such sprinklers shall be increased to 3 in.(76 mm) and sized thereafter according to the schedule shown in Table 23 Table 23 .7.2.2.1 for the numberof sprinklers above or below a ceiling, whichever is larger.





As noted in the Committee Statement, the existing code section incorrectly references Table 23.5.2.2.1 instead of Table 23.5.2.4. However, the agreed to change to the text was not implemented into the First Draft Report. Since Section 23.5 was moved to 23.7, the text should now be revised to reference Table 23.7.2.4.

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23.7.3.9 *

Where the total number of sprinklers above and below a ceiling exceeds the number specified in Table23.7.3.7 for 3 in. (76 mm) pipe, the pipe supplying such sprinklers shall be increased to 3 1⁄2 in. (89 mm)and sized thereafter according to the schedule shown in Table 23 Table 23 .7.3 2 .5 2.1 or Table 23.7.3.4for the number of sprinklers above or below a ceiling, whichever is larger.





The intention of this revision was to correct a supposedly incorrect reference to Table 23.5.2.2.1 but the reference is actually correct in the first place. As pointed out by the submitter of TCR proposal 13-42 and TCD comment 13-41, leading to the 1987 edition of NFPA 13, the reference to the light hazard pipe size table is the correct one, because the spaces above the ceiling are considered to be light hazard. The Technical Committee of that time agreed, and the reference to the light hazard table has been in this clause ever since and should remain so now.

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24.1.3.3

For new systems to be supplied by When a single main less than 4 in. (100 mm) in diameter , which willserve serves both domestic and fire systems, the domestic demand shall be added to the hydrauliccalculations for the fire system at the point of connection unless provisions have been made to isolate thedomestic demand.





This revision is not necessary. Since NFPA 13 is an installation standard, all installations that are done in accordance with the latest edition should be considered to be new. As per the Retroactivity Clause of 1.4.1, the provisions of this standard do not apply to existing facilities.

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24.1.3.3

For new systems to be supplied by a single main less than 4 in. (100 mm) in diameter, which will serveboth domestic both non-fire and fire systems, the domestic the non-fire demand shall be added to thehydraulic calculations for the fire system at the point of connection unless provisions have been made toisolate the domestic the non-fire demand.


This language simplifies the distinction between fire system water demand and all other water demands served by a single main.

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24.1.3.3

For new systems to be supplied by a single combined main less than 4 in. (100 mm) in diameter, which willserve both domestic and fire systems and other uses , the domestic demand for other uses shall be addedto the hydraulic calculations for the fire system at the point of connection unless provisions have beenmade to isolate the domestic other demand.


In addressing combined mains, NFPA 13 only references domestic demands. One could readily interpret this to mean that combined mains can only be used for supplying fire protection and domestic demands. The question remains can a combined main be used for supplying other demands such as for manufacturing. The suggested change comes from NFPA 24: 1.1.2 where it states - This standard shall apply to combined service mains used to carry water for fire service and other uses.

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24.1.6.1.3 Where plastic underground piping is provided above grade or inside a building, pipingshall be protected, as per manufacturer requirements, such as from direct rays of sunlight,incompatible materials, or the weight of the sprinkler riser on the piping.

24.1.6.1.3.1 One suitable protection method for this plastic piping is sleeving.


It is my understanding that the TC intends to allow PVC underground piping to enter a building to supply the sprinkler system inside a building. My concerns include: 1. Weight of the spinkler riser on the PVC pipe - is it tested for vertical loading in this regard? 2. Incompatibility with various chemicals, including floor coatings - the Arrangement section in NFPA 13 no longer seems to adequately address that potential concern. 3. Potential to exposure from sunlight. I have not yet seen manufacturer information indicating that PVC piping is being tested for vertical loading, especially to hold a sprinkler riser plus backflow preventer. I have been told by UL that such arrangement would not violate the listing of the subject piping. I have made contact with manufacturers attempting to verify if the piping is tested for such installation, and if the warranty would not be voided. My intent with this proposal is simply to ensure that such plastic piping is sutiably protected from conditions that could damage or degrade the piping supplying water to the fire protection system(s).



Public Comment No. 219-NFPA 13-2014 [New Section after 10.1.4.1] same proposal - different section

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Submitter Full Name: Bob Morgan

Organization: Fort Worth Fire Department

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24.2.2.2.1* Where a waterflow test was conducted, the volume and pressure available for use for a fireprotection system shall be determined from the following formula:

P = (P1 - P2)(Q/Q1)1.85 P2

24.2.2.1.1 The pressure P shall be what is considered available from the water supply to use for a fireprotection system that will be calculated for a given flow demand of Q.

24.2.2.1.2 The flow Q shall be demand flow of the fire protection system that will be used to calculate theavailable pressure from the water supply (P).

24.2.2.1.3* The variable P1 shall be the residual pressure measured during the waterflow test while the flow

Q1 was discharging from the water supply reduced by the specifying engineer or the water utility for daily

and seasonal fluctuations. The reduction shall not be based on 100 year droughts or other extremeconditions.

24.2.2.1.4* The variable P2 shall be the static pressure measured during the waterflow test reduced by the

specifying engineer or the water utility for daily and seasonal fluctuations. The reduction shall not be basedon 100 year droughts or other extreme conditions.

24.2.2.1.5 The variable Q1 shall be the flow associated with P1.

24.2.2.1.6* Where the specifying engineer or the water utility does not provide the value for P1 and P2, see

24.2.2.2.2.

24.2.2.2.2* Where a waterflow test has been conducted and the specifying engineer or the water authoritydoes not provide a value for P1 and P2, the value of for P1 and P2 shall be calculated by taking the static

pressure and residual pressure results from the flow test and reducing them by 5%.



Water_Supply_Adjustment_Proposal-E_S-13.pdf Whole file with equations and figures


This is one of a series of proposals to make the adjustment to the data from a waterflow test required instead of recommended. If the adjustment is not required, contractors that do the right thing and adjust the data from tests are at a disadvantage from contractors that don't make any adjustment. It is fundamentally wrong to not make an adjustment to the data due to daily and seasonal fluctuations. This proposal makes a simple and easy to understand adjustment that is standardized so that there is no argument over what is supposed to happen. It is the intent to have this be the only adjustment. If the water utility has already performed the adjustment, or if the AHJ has already mandated a safety margin or safety factor to the waterflow data obtained from the test, this adjustment would not apply.

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Submitter Full Name: Kenneth Isman


Affilliation: NFSA E&S Committee

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NFSA Comment to NFPA 13 on Waterflow Test Adjustments

1) Delete A.24.2.2.2 A.24.2.2.2 An adjustment to the waterflow test data to account for daily and seasonal fluctuations, possible interruption by flood or ice conditions, large simultaneous industrial use, future demand on the water supply system, or any other condition that could affect the water supply should be made as appropriate.

2) Insert a new 24.2.2.2.1, 24.2.2.2.2 and annex notes as follows: 24.2.2.2.1* Where a waterflow test was conducted, the volume and pressure available for use for a fire protection system shall be determined from the following formula:

( ) 2

85.1

121 P

QQPPP +

−=

24.2.2.1.1 The pressure P shall be what is considered available from the water supply to use for a fire protection system that will be calculated for a given flow demand of Q. 24.2.2.1.2 The flow Q shall be demand flow of the fire protection system that will be used to calculate the available pressure from the water supply (P). 24.2.2.1.3* The variable P1 shall be the residual pressure measured during the waterflow test while the flow Q1 was discharging from the water supply reduced by the specifying engineer or the water utility for daily and seasonal fluctuations. The reduction shall not be based on 100 year droughts or other extreme conditions. 24.2.2.1.4* The variable P2 shall be the static pressure measured during the waterflow test reduced by the specifying engineer or the water utility for daily and seasonal fluctuations. The reduction shall not be based on 100 year droughts or other extreme conditions. 24.2.2.1.5 The variable Q1 shall be the flow associated with P1. 24.2.2.1.6* Where the specifying engineer or the water utility does not provide the value for P1

and P2, see 24.2.2.2.2. 24.2.2.2.2* Where a waterflow test has been conducted and the specifying engineer or the water authority does not provide a value for P1 and P2, the value of for P1 and P2 shall be calculated by taking the static pressure and residual pressure results from the flow test and reducing them by 5%. A.24.2.2.2.1 Consider the following example. A waterflow test is conducted at a location where a city water main is going to be tapped for a new sprinkler system. During the test, the static pressure is measured at 70 psi, the residual pressure is measured at 50 psi while 1300 gpm was

discharging from a nearby hydrant. The water utility is contacted and they indicate that a reasonable low static pressure accounting for typical daily and seasonal fluctuations in this area is 55 psi and that a reasonable low residual pressure accounting for typical daily and seasonal fluctuations in this area at a flow of 1300 gpm is 35 psi. The equation that describes the water supply available for a fire sprinkler system would be:

( ) 551300

553585.1

+

−=

QP

There are two ways to use this formula. One would be to assume two different values for Q, calculate P and then draw a graph on log 1.85 paper. Any fire sprinkler system demand falling on or below the line on this graph would be acceptable in accordance with NFPA 13 to work with this water supply. In this case, the two easiest flows to pick for Q would be 0 and 1300 gpm. When Q = 0, P is simply 55 psi. When Q = 1300 gpm, P = 35 psi. These two points can be plotted on log 1.85 paper as shown in Figure A.24.2.2.2.1. The second way to use this formula would be to calculate the fire protection system and determine the flow necessary to make the system work. Plug this flow into the formula above and see what the available pressure from the water supply will be at that flow. For example, if a sprinkler system connected to this water supply had a demand of 580 gpm, the available pressure from the water supply would be:

( ) 551300

5805535

85.1

+

−=P

P = (-20)(0.225) + 55

P = 50.5 psi

So, as long as the sprinkler system has a pressure demand less than or equal to 50.5 psi, it will work with this water supply.

Figure A.24.2.2.2.1 Available Water Supply Curve for Example in Section A.24.2.2.2.1

A.24.2.2.1.3 The purpose of the adjustment required by this section is to take into account reasonable fluctuations that occur on a daily and seasonal basis, but not to burden the building owner with extreme conditions. During an extreme condition such as a water main break or a severe drought, the impaired system provisions of NFPA 25 can be employed to mitigate the circumstances of the extreme condition. The intent of this section is to apply the adjustment to the raw data obtained by the flow test and not to apply adjustments to values that have already been adjusted by water utilities. If a water utility has already provided flow and pressure data for use in the design of fire protection systems that already includes adjustments for daily and seasonal water usage, there is no need to make any additional adjustments to this data. A.24.2.2.1.4 See annex note A.24.2.2.1.3. A.24.2.2.1.6 Water utilities are the entities that know their own supplies the best and know what appropriate adjustments need to be made to flow test data to provide reasonable fire protection. In the potential situation where the water utility will not make a definitive statement with regard to an adjustment, the fire protection engineer is the person that would need to make a statement with respect to adjustments to the raw data from a flow test. Due to the judgment involved in making such a decision, the licensing laws in most states within the United States would require the fire protection engineer to make this determination rather than the fire protection system contractor. It is expected that the engineer would make these statements in the specifications provided to the fire protection system contractor. In the absence of any information from any authority on the subject, section 24.2.2.2.2 provides a standardized method of making a decision. A.24.2.2.2.2 Section 24.2.2.2.2 provides a standardized method of making a decision regarding the reduction of the results from a waterflow test to determine what pressure and flow are available from a water supply when the specifying engineer and the water utility have not provided adjustment information. An example of how to use this standardized method follows.

If a waterflow test is conducted at a location where a city water main is going to be tapped for a new sprinkler system and the static pressure is measured at 70 psi, with the residual pressure measured at 50 psi while 1300 gpm was discharging from a nearby hydrant. If there is no information from the specifying engineer or water utility regarding appropriate adjustments, the value of the static pressure and residual pressure need to be reduced by 5%. The static pressure would be adjusted from 70 psi to 66.5 psi (70 x 0.95 = 66.5). The residual pressure at 1300 gpm would be reduced from 50 psi to 47.5 psi (70 x 0.95 = 47.5). The results would be plotted on log 1.85 graph paper as shown in the lower curve on Figure A.24.2.2.2.2 and that curve would represent what the fire protection system contractor could use for a fire protection system.



24.2.2.2 *

The volume and pressure of a public water supply shall be determined from waterflow test data or otherapproved method. Daily and seasonal flow and pressure fluctuation data shall be provided by the waterpurveyor, and the fireprotection design must account for both high and low variations. Where this data is not available, designshall be based on the available water flow data.


Some version of the requirement to identify and adjust for pressure fluctuations has been in the body of the NFPA 13 standard for many years. Below is the text from the 1996 edition: "7-2 Types.7-2.1" Connections to Water Works Systems. A connection to a reliable water works system shall be an acceptable water supply source. The volume and pressure of a public water supply shall be determined from waterflow test data.(See NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances.) The authority having jurisdiction shall be permitted to require an adjustment to the waterflow test data to account for daily and seasonal fluctuations,possible interruption by flood or iceconditions, large simultaneous industrial use, future demand on the water supply system, or any other condition that could affect the water supply."

Moving the requirement to account for pressure fluctuations into the Appendix in the 2010 edition of the standard removes a great deal of the authority of local enforcers to require that fire hydrant flow test data be adjusted to account for such pressure fluctuation. As an enforcer, I have already encountered this argument. After the first revisions meeting, my proposal to the 2015 edition of the International Fire Code was heard and aproved. Such will now that water flow tests be adjusted to account for such fluctuations in the 2015 IFC. Further, my similar proposal to NFPA 14 was debated significantly, but we finally agreed on the revised text that I have submitted with this proposal as a first revision. Most public water supply systems fluctuate significantly throughout the day as well as seasonally. The result can be a very inadequate fire sprinkler design, or potentially a system that fluctuates over the 100 psi mark necessitating surge clips and hanger changes, or if provided with afire pump, a system that fluctuates over 175 psi. This is a critical issue that was located in the body of the standard for many years, and in my opinion, adequate substantiation was not provided to move it to the Appendix, which again, in most jurisdictions, is not enforceable. This is not an advisory statement or commentary and is not always an engineering decision, and even if it is, it still must be a requirement for adequate fire protection design. The reason statements that I have been told in the various committees for not doing this is that the information can be difficult to acquire from the jurisdiction. That is not acceptable in my opinion. I do not know how one can ethically design a water-based fire protection system without at least attempting to acquire this fluctuation information.I will further note that the FPRF has begun a project to investigate more specifically water models utilized by water authorities and how to accommodate fluctuation issues, in general - that is not a very good description I am sure, but I believe such was in response to an NFPA 13 committee request regarding these proposals.

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Submitter Full Name: Bob Morgan

Organization: Fort Worth Fire Department

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Public Comment No. 103-NFPA 13-2014 [ New Section after A.3.9.3.7 ]

A.3.9.3.7.5 When a narrow rack with a depth up to 6 ft is located within 24 inches of a wall, it is consider to havea longitudinal flue and is treated as a double-row rack.


The committee statement is that in-rack sprinklers are clear in the associated figures. That answer does not address the issue. This text supports the change submitted on chapter 17 (PI-119) which incorrectly calls a narrow rack against the wall a single row rack which conflicts with ch 16 identifying them as a double row rack. The committee statement on PI-119 states that the narrow rack against the wall is a single row rack AND that the space between the rack and the wall is a longitudinal flue. The definition of a single row rack (3.9.3.7.5) explicitly states that it is a rack of up to 6 ft with no longitudinal flue space. This issue is obviously not well understood and some clarifying text is warranted.




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Public Input No. 86-NFPA 13-2013 [New Section after A.3.9.4.4]




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Public Comment No. 253-NFPA 13-2014 [ Section No. A.3.9.3.8 ]

A.3.9.3.8 Solid Shelving.

The placement of loads affects the calculated area of the shelf. It is the intent to apply this definition toloads on the rack where 6 in. (150 mm) nominal flues are not provided on all four sides, regardless ofwhether shelving materials are present. See 16.1.6.3 and 17.1.5.3 for additional allowances for double-rowracks up 25 ft and multi-row of any height without a longitudinal flue space.


Sections 16.1.6.3 and 17.1.5.3 provide allowances for double-row racks up to 25 ft without a longitudinal flue and multi-row racks of any height without longitudinal flues to not be considered as solid shelving provided transverse flues are provided every 5 ft maximum. This shoud be recoginize when trying to apply the definition of solid shelf in Chapter 3.

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Public Input No. 313-NFPA 13-2013 [New Section after A.3.9.3.7]




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Public Comment No. 181-NFPA 13-2014 [ Section No. A.5.3.1 ]

A.5.3.1

Ordinary hazard (Group 1) occupancies include occupancies having uses and conditions similar to thefollowing:

(1) Automobile parking and showrooms

(2) Bakeries

(3) Beverage manufacturing

(4) Canneries

(5) Dairy products manufacturing and processing

(6) Electronic plants

(7) Glass and glass products manufacturing

(8) Laundries

(9) Restaurant service areas

(10) Porte cocheres

(11) Mechanical rooms with stockpiles up to 8 ft (2.4 m)



LGK_NFPA_13-2013_Comment_A-5-3-1.pdf PC Form


As proposed, new Sentence (11) says "Mechanical rooms with stockpiles up to 8 ft (2.4 m)", but as per the NFPA 1 Fire Code, Section 10.19.5.1, "Combustible material shall not be stored in boiler rooms, mechanical rooms, or electrical rooms". Therefore, the reference to 8 ft stockpiles must be deleted. NFPA 13 should not be implying that it may be alright to put storage into any such service rooms.

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First Revision No. 262-NFPA 13-2013 [Section No. A.5.3.1]




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A.5.3.1


(1) Automobile parking and showrooms

(2) Bakeries

(3) Beverage manufacturing

(4) Canneries

(5) Dairy products manufacturing and processing

(6) Electronic plants

(7) Glass and glass products manufacturing

(8) Laundries

(9) Restaurant service areas

(10) Porte cocheres

(11)

(12) Mechanical rooms with stockpiles up to 8 ft (2.4 m)


Not all porte cocheres need to be treated as Ordinary Hazard Group 1. In fact, not all porte cocheres are required to be protected with a sprinkler system. Many porte cocheres are typically used for protecting someone while they are getting in or out of a vehicle. If vehicles are not left under the porte cochere is OH 1 necessary?

The submitted of the Public Input upon which the First Revision was based provided no technical substantiation for requiring all porte cocheres to be protected as OH 1 other than guidance is necessary.

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A.5.3.2


(1) Agricultural facilities

(2) Barns and stables

(3) Cereal mills

(4) Chemical plants — ordinary

(5) Confectionery products

(6) Distilleries

(7) Dry cleaners

(8) Exterior loading docks (Note that exterior loading docks only used for loading and unloading ofordinary combustibles should be classified as OH2. For the handling of flammable and combustibleliquids, hazardous materials, or where utilized for storage, exterior loading docks and all interiorloading docks should be protected based upon the actual occupancy and the materials handled on thedock, as if the materials were actually stored in that configuration.)

(9) Feed mills

(10) Horse stables

(11) Leather goods manufacturing

(12) Libraries — large stack room areas

(13) Machine shops

(14) Metal working

(15) Mercantile

(16) Paper and pulp mills

(17) Paper process plants

(18) Piers and wharves

(19) Plastics fabrication, including blow molding, extruding, and machining; excluding operations usingcombustible hydraulic fluids

(20) Post offices

(21) Printing and publishing

(22) Racetrack stable/kennel areas, including those stable/kennel areas, barns, and associated buildings atstate, county, and local fairgrounds

(23) Repair garages

(24) Resin application area

(25) Stages

(26) Textile manufacturing

(27) Tire manufacturing

(28) Tobacco products manufacturing

(29) Wood machining

(30) Wood product assembly

(31) Car Stackers/ Car Lift Systems with 2 cars stacked vertically


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Per the committee response to PI 367, two cars stacked vertically may have Ordinary Hazard classification. It is very important to HAJs to have code indication (even in the annex) for such common design issue.

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Public Input No. 367-NFPA 13-2013 [Section No. A.5.4.1]


Submitter Full Name: Sagiv Weiss-Ishai

Organization: San Francisco Fire Department

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A.5.3.2


(1) Agricultural facilities

(2) Agro-Industrial facilities

(3) Barns and stables

(4) Cereal mills

(5) Chemical plants — ordinary

(6) Confectionery products

(7) Distilleries

(8) Dry cleaners

(9) Exterior loading docks (Note that exterior loading docks only used for loading and unloading ofordinary combustibles should be classified as OH2. For the handling of flammable and combustibleliquids, hazardous materials, or where utilized for storage, exterior loading docks and all interiorloading docks should be protected based upon the actual occupancy and the materials handled on thedock, as if the materials were actually stored in that configuration.)

(10) Feed mills

(11) Horse stables

(12) Leather goods manufacturing

(13) Libraries — large stack room areas

(14) Machine shops

(15) Metal working

(16) Mercantile

(17) Paper and pulp mills

(18) Paper process plants

(19) Piers and wharves

(20) Plastics fabrication, including blow molding, extruding, and machining; excluding operations usingcombustible hydraulic fluids

(21) Post offices

(22) Printing and publishing

(23) Racetrack stable/kennel areas, including those stable/kennel areas, barns, and associated buildings atstate, county, and local fairgrounds

(24) Repair garages

(25) Resin application area

(26) Stages

(27) Textile manufacturing

(28) Tire manufacturing

(29) Tobacco products manufacturing

(30) Wood machining

(31) Wood product assembly


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The addition of the term, "Agro-Industrial facility, clarifies the level of protection provided to agro-industrial facilities processing “crop-residue”--as solid, biomass feedstock--into solid biofuel (densified plant or animal-based material of biological origin, often pelletized into cubiform, polyhedral, polyhedric or cylindrical units).

Accordingly, the BIPCS recommends a Commodity Hazard Classification of III and an Occupancy Classification of Ordinary hazard (Group 2). The Biomass Industry Panel on Codes and Standards (BPICS), led by Oak Ridge National Laboratory (ORNL), is an initiative of the Department of Energy Biomass Technologies Office (BTO). As part of the BTO integrated biorefinery efforts, the BFICOCS was assembled to conduct analysis of existing fire and building codes and to prepare proposed code changes designed to facilitate the development of the commercial-scale biomass industry while maintaining a focus on safety. The committee is made up of managers, engineers and code officials from industry, government laboratories, consulting firms, and the American Society of Agricultural and Biological Engineers (ASABE).

Fire codes related to storage, handling, and pre-processing of biomass are based on industries that operate in a significantly different manner than the growing biomass-based energy industry. Applying current research on biomass properties and knowledge of conventional and emerging storage, handling, and pre-processing technologies, the BFICOCS has submitted changes to both the NFPA and ICC development processes intent on benefiting both industry and the public.

Related Item



Submitter Full Name: Darren Meyers

Organization: IECC LLC

Affilliation: Co-Chair, DOE Biomass Industry Panel on Codes & Standards

Street Address:

City:

State:

Zip:



475 of 579 5/19/2014 1:50 PM


A.5.4.1

Extra hazard (Group 1) occupancies include occupancies having uses and conditions similar to thefollowing:

(1) Aircraft hangars (except as governed by NFPA 409)

(2) Combustible hydraulic fluid use areas

(3) Die casting

(4) Metal extruding

(5) Plywood and particleboard manufacturing

(6) Printing [using inks having flash points below 100°F (38°C)]

(7) Rubber reclaiming, compounding, drying, milling, vulcanizing

(8) Saw mills

(9) Textile picking, opening, blending, garnetting, or carding, combining of cotton, synthetics, wool shoddy,or burlap

(10) Upholstering with plastic foams

(11) Car Stackers/ Car Lift Systems with more the 2 cars stacked vertically


Per the comittee's response (Resolution) to PI No.367, It seems that 2 cars stacked vertically are less hazardous that 3 or more cars stacked vertically; and therefore, this public comment addresses and clarifies the requirment for Extra Hazard Group 1 protection for 3 or more cars stacked vertically.It is very important for AHJs to have a clear code reference/design criteria for car stackars protection.

Please contact FPE Fred Stumpp and/or FPE Sagiv Weiss-Ishai from SFFD, for more specific clarifications.at 415-558-6173 or 415-558-6421 and email address: [email protected] or [email protected]



Related Item



This PC has not been submitted yet


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A.5.4.2

Extra hazard (Group 2) occupancies include occupancies having uses and conditions similar to thefollowing:

(1) Asphalt saturating

(2) Flammable liquids spraying

(3) Flow coating

(4) Manufactured home or modular building assemblies (where finished enclosure is present and hascombustible interiors)

(5) Open oil quenching

(6) Plastics manufacturing

(7) Solvent cleaning

(8) Varnish and paint dipping

(9) Double layer car storage


The parking garage can be reasonably protected with sprinklers only at the ceiling if the hazard classification is increased to Extra Hazard Group 2. The definition of Extra Hazard Group 2 includes, “occupancies where shielding of combustibles is extensive” (Section 5.4.2 of the 2013 edition of NFPA 13). The basic concept in this section is that hazards that would normally be classified as Ordinary Hazard can be protected with sprinklers only at the ceiling by increasing the density and area of coverage, and by decreasing the sprinkler spacing, in accordance with the Extra Hazard rules. Examples of such situations include factories where manufactured homes are built. During the process of building a manufactured home, sprinkler protection is not extended down inside the manufactured home, but sprinklers at the roof of the factory are expected to control any fire, including one starting inside a home being manufactured. By upgrading the design basis of the sprinkler system to Extra Hazard Group 2 (increasing the density by 167% and increasing the area of operation by 67%) the sprinkler system is expected to handle the additional challenge of a shielded fire (see A.5.4.2 of the 2013 edition), and should be sufficient to handle the fuel load of two cars (one above another), preventing the fire from spreading to the adjacent cars while maintaining acceptable conditions for the structural members within the structure.

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First Revision No. 239-NFPA 13-2013 [New Section after A.3.9.3.6]





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Public Comment No. 198-NFPA 13-2014 [ Section No. A.5.6 ]

A.5.6

Specification of the type, amount, and arrangement of combustibles for any commodity classification isessentially an attempt to define the potential fire severity, based on its burning characteristics, so the firecan be successfully controlled by the prescribed sprinkler protection for the commodity class. In actualstorage situations, however, many storage arrays do not fit precisely into one of the fundamentalclassifications; therefore, the user needs to make judgments after comparing each classification to theexisting storage conditions. Storage arrays consist of thousands of products, which makes it impossible tospecify all the acceptable variations for any class. As an alternative, a variety of common products areclassified in this annex based on judgment, loss experience, and fire test results.

Table A.5.6 provides examples of commodities not addressed by the classifications in Section 5.6. Thecommodities listed in Table A.5.6 are outside of the scope of NFPA 13 protection.

Table A.5.6.3 is an alphabetized list of commodities with corresponding classifications.

Table A.5.6.3.1 through Table A.5.6.3.4 and Table A.5.6.4.1 provide examples of commodities within aspecific class.

Table A.5.6 Examples of Commodities Not Addressed by Classifications in Section 5.6

Ammunition components - Bulk Primers and powder

Boat Storage

- Stored on racks

Boxes, Crates

- Empty, wood slatted*

Carpet Rolls

Combustible Metals

Compressed or liquified flammable gases other than Level 1 aerosols

Explosives

Fireworks

Flammable and combustible liquids under the scope of NFPA 30

Hanging garments, bulk storage

Lighters (butane)

- Loose in large containers (Level 3 aerosol)

Storage Container

- Large container storage of household goods

*Should be treated as idle pallets.


CC NOTE: The following CC Note No. 7 appeared in the First Draft Report as First Revision No. 290.

The TC must look into annex language to describe the different conditions where PET is considered a group A plastic (pure PET) and a class IV commodity (packaged bottles) . This should include an explanation of each of these conditions.

Related Item

First Revision No. 290-NFPA 13-2013 [Section No. A.5.6]




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A.5.6.1.1

Commodity classification is governed by the types and amounts of materials (e.g., metal, paper, wood,plastics) that are a part of a product and its primary packaging. Consideration of all characteristics of theindividual storage units, not just the product, is critical to identify the appropriate commodity classification.Refer to Table A.5.6.1.1 for general guidance for classifying commodities. For situations where it isdifficult to determine the appropriate classification, testing should be considered to appropriatelycharacterize the commodity.

Table A.5.6.1.1 General Guide to Identifying the Commodity Class

Characteristics of Unit Load Commodity Class 1 Material Used to Construct Product PackagingMaterial Pallet Material Noncombustible Product Entirely noncombustible None or single layercorrugated cartons None, metal or wood Class I Entirely noncombustible Multiple-layered corrugatedcartons, wooden crates or wood boxes None, metal or wood Class II Noncombustible with Group A plasticcomponents None or single layer corrugated cartons None, metal or wood See Figure 5.6.3.4.1 Entirelynoncombustible or noncombustible with plastic components Corrugated cartons, wooden crates or woodboxes, with plastic packaging None, metal or wood See Figure

Delete Table A. 5.6.

3.4.

1

Entirely noncombustible or noncombustible with plastic components Any type Plastic See 5

.

6.2 and Figure 5.6.3.4.

1

Wood, Paper, Natural Fibers or Group C Plastics Entirely wood, paper, natural fibers or Group Cplastics None, corrugated cartons, wooden crates or wood boxes None, metal or wood Class III Entirelywood, paper, natural fibers or Group C plastics Corrugated cartons, wooden crates or wood boxes, withplastic packaging None, metal or wood See Figure 5.6.3.4.1 Wood, paper, natural fibers or Group Cplastics, with Group A plastic components None, corrugated cartons, wooden crates or wood boxes with orwithout plastic packaging None, metal or wood See Figure 5.6.3.4.1 Wood, paper, natural fibers or GroupC plastics, with or without Group A plastic components Any type Plastic See 5.6.2 and Figure 5.6.3.4.1Group B Plastics Entirely Group B plastics or free flowing plastic materials None, corrugated cartons,wooden crates or wood boxes None, metal or wood Class IV Entirely Group B plastics or free flowingplastic materials Corrugated cartons, wooden crates or wood boxes, with plastic packaging None, metal orwood See Figure 5.6.3.4.1 Group B plastics with Group A plastic components None, corrugated cartons,wooden crates or wood boxes, with or without plastic packaging None, metal or wood See Figure5.6.3.4.1 Entirely Group B plastics or free flowing plastic materials, or Group B plastics and Group Aplastic components Any type Plastic See 5.6.2 and Figure 5.6.3.4.1 Group A Plastics Entirelyunexpanded Group A plastic Corrugated cartons, wooden crates or wood boxes, without expanded GroupA plastic packaging None, metal, wood or plastic Cartoned unexpanded Group A Plastic Entirelyunexpanded Group A plastic None None, metal, wood or plastic Exposed unexpanded Group APlastic Entirely unexpanded Group A plastic Corrugated cartons, wooden crates or wood boxes, withexpanded Group A plastic packaging None, metal, wood or plastic See Figure 5.6.3.4.1 UnexpandedGroup A plastic with expanded Group A plastic components Corrugated cartons, wooden crates or woodboxes, with or without expanded Group A plastic packaging None, metal, wood or plastic See Figure5.6.3.4.1 Expanded Group A plastic Corrugated cartons, wooden crates or wood boxes, with or withoutexpanded Group A plastic packaging None, metal, wood or plastic Cartoned expanded Group APlastic Expanded Group A plastic None None, metal, wood or plastic Exposed expanded Group A Plastic

Note: This table provides guidance for the general characteristics to be considered in classifying acommodity. The additional commodity classification information included in this standard as well as anyrelevant test data that is available should be considered in identifying the appropriate classification.



LGK_NFPA_13-2013_Comment_A-5-6-1-1.pdf PC Form


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The proposed Table A.5.6.1.1 should not be accepted, because it makes numerous references to the proposed new Figure 5.6.3.4.1 and that proposed Figure 5.6.3.4.1 should not be accepted. The reason to adopt Figure 5.6.3.4.1 is not supported by any valid substantiation. The existing provision is that a product can have up to 25% by volume or 15% by weight of Group A plastics and still be considered to be a Class IV commodity. As per the proposed Figure 5.6.3.4.1 however, if a product had just 20% by volume and 10% by weight, it would be classified as a Group A plastic. This extreme change is unjustified and should not be accepted.

Related Item

First Revision No. 291-NFPA 13-2013 [Section No. A.5.6.1.1]




Street Address:

City:

State:

Zip:



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A.5.6.3.3


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See Table A.5.6.3.3.

Table A.5.6.3.3 Examples of Class III Commodities

Aerosols

Cartoned or exposed

- Level 1

Baked Goods

Cookies, cakes, pies

- Packaged, in cartons

Beans

Dried

- Packaged, cartoned

Biomass briquettes and pellets - Neat- and loose-piles

Bread

Wrapped, cartoned

Butter

Whipped spread

Candy

Packaged, cartoned

Cartons

Corrugated

- Unassembled (neat piles)

Cereals

Packaged, cartoned

Charcoal

Bagged

- Standard

Cheese


- Wheels, cartoned

Chewing Gum

Packaged, cartoned

Chocolate

Packaged, cartoned

Cloth

Cartoned and not cartoned

- Natural fiber, viscose

Cocoa Products

Packaged, cartoned

Coffee

Packaged, cartoned

Coffee Beans

Bagged

Cotton

Packaged, cartoned

Diapers


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Cotton, linen

Dried Foods

Packaged, cartoned

Fish or Fish Products

Frozen

- Plastic trays, cartoned

Frozen Foods

Plastic trays

Furniture

Wood

- No plastic coverings or foam plastic cushioning

Grains — Packaged in Cartons

- Barley

- Rice

- Oats

Margarine

Up to 50 percent oil (in paper or plastic containers)

Mattresses

Standard (box spring)

Nuts


- Bagged

Paper Products

Books, magazines, stationery, plastic-coated paper food containers, newspapers, cardboard games,cartoned tissue products

Paper, Rolled

In racks or on side

- Medium- or heavyweight

Photographic Film

- 35 mm in metal film cartridges in polyethylene cans in cardboard boxes

- Paper, in sheets, bagged in polyethylene, in cardboard boxes

PVC (polyvinyl chloride)

- Flexible (e.g., cable jackets, plasticized sheets)

- Rigid (e.g., pipe, pipe fittings)

- Bagged resins

Rags

Baled

- Natural fibers

Shingles

Asphalt-coated fiberglass

Shock Absorbers

Plastic dust cover

Skis

Wood

Textiles

Natural fiber clothing or textile products

Synthetics (except rayon and nylon) —


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50/50 blend or less

- Thread, yarn on wood or paper spools

- Fabrics

Tobacco Products

In paperboard cartons

Wood Products

- Spools (empty)

- Toothpicks, clothespins, hangers in cartons

- Doors, windows, wood cabinets, and furniture


Department of Energy projected feedstock costs—including grower payment, grinding, and feeding into the throat of the conversion process—are in the range of $85/dry ton by 2017. Packaging and storage of peletized and ground corn stover in supersacks adds $53 per dry-metric-ton (dmt) to the cost for packaging alone; there are additional equipment and labor costs for the bagging and debagging operations. The sheer logistics of moving containerized biomass and the additional cost for the packaging essentially eliminate the viability of the approach.

Upon recognizing this commercialization limitation, the BPICS has reconsidered its approach, thereby proposing only "static" and "loose-pile" configurations (minus the “bagged-supersak” and standard "collapsible shipping tote" categories.

Once again, The solid biomass materials submitted to NFPA13 are intended to clarify the level of protection provided to certain “crop-residue” is to be identified as a Class III commodity.

The supplementary material in the form of file, "HHV_INL_draft_002.xlsx" was prepared by Idaho National Laboratory to provide the NFPA13 Committee with 1) Results for heat of combustion performed at INL using the standard test methods of ASTM D5865-10a, Standard Test Method for Gross Calorific Value of Coal and Coke Using Either an Isoperibol or Adiabatic Bomb Calorimeter, 2) Results that the Laboratory has drawn from the literature, and 3) A simple spreadsheet from the publicly available "Engineering Toolbox" website showing values for a range of cellulosic biomass.

This comparative and peer-reviewed literature review demonstrates that the heating values for a select set of biomass feedstock are less than those for the two grades of Coal (Bituminous and Sub Bituminous), Charcoal, and Wood [Douglas fir wood and Douglas fir bark (i.e., Furniture)] identified in Table A.5.6.3.3 for Class III Commodities.

A comparative table (below) shows heating values for a select set of biomass feedstock relative to two grades of coal. http://www.engineeringtoolbox.com/biomass-fuels-hhv-d_1818.html

Material HHV (GJ Mg-1) HHV (Btu/lb) Bituminous Coal 31.7 13,629 Sub Bituminous Coal 32.9 14,144 Charcoal 31.0 13,328 Douglas fir 21.0 9,028 Douglas fir bark 22.0 9,458 Eucalyptus grandis 19.4 8,340 Beech 20.3 8,727 Sugar cane bagasse 17.3 7,438 Wheat straw 17.5 7,524 Poplar 20.7 8,899 Rice hulls 15.3 6,578 Rice straw 15.8 6,793

The Biomass Industry Panel on Codes and Standards (BPICS), led by Oak Ridge National Laboratory (ORNL), is an initiative of the Department of Energy Biomass Technologies Office (BTO). As part of the BTO integrated biorefinery efforts, the BIPCS was assembled to conduct analysis of existing fire and building codes and to prepare proposed code changes designed to facilitate the development of the commercial-scale biomass industry


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while maintaining a focus on safety. The committee is made up of managers, engineers and code officials from industry, government laboratories, consulting firms, and the American Society of Agricultural and Biological Engineers (ASABE).

Fire codes related to storage, handling, and pre-processing of biomass are based on industries that operate in a significantly different manner than the growing biomass-based energy industry. Applying current research on biomass properties and knowledge of conventional and emerging storage, handling, and pre-processing technologies, the BIPCS has submitted changes to both the NFPA and ICC development processes intent on benefiting both industry and the public.

Related Item

Public Input No. 464-NFPA 13-2013 [Section No. A.5.6.3.3]




Affilliation: Co-Chair, DOE Biomass Industry Panel on Codes & Standards

Street Address:

City:

State:

Zip:



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A.5.6.3.3


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Aerosols

Cartoned or exposed

- Level 1

Baked Goods



Beans

Dried


Bread

Wrapped, cartoned

Butter

Whipped spread

Candy

Packaged, cartoned

Cartons

Corrugated


Cereals

Packaged, cartoned

Charcoal

Bagged

- Standard

Cheese


- Wheels, cartoned

Chewing Gum

Packaged, cartoned

Chocolate

Packaged, cartoned

Cloth



Cocoa Products

Packaged, cartoned

Coffee

Packaged, cartoned

Coffee Beans

Bagged

Corn cobs - Neat- and loose-piles

Cotton

Packaged, cartoned

Diapers


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Cotton, linen

Dried Foods

Packaged, cartoned


Frozen


Frozen Foods

Plastic trays

Furniture

Wood



- Barley

- Rice

- Oats

Margarine


Mattresses


Nuts


- Bagged

Paper Products


Paper, Rolled

In racks or on side


Photographic Film






- Bagged resins

Rags

Baled

- Natural fibers

Shingles


Shock Absorbers

Plastic dust cover

Skis

Wood

Textiles




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50/50 blend or less


- Fabrics

Tobacco Products


Wood Products

- Spools (empty)













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Related Item





Affilliation: Co-Chair, Biomass Industry Panel on Codes & Standards

Street Address:

City:

State:

Zip:



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A.5.6.3.3


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Aerosols

Cartoned or exposed

- Level 1

Baked Goods



Beans

Dried


Bread

Wrapped, cartoned

Butter

Whipped spread

Candy

Packaged, cartoned

Cartons

Corrugated


Cereals

Packaged, cartoned

Charcoal

Bagged

- Standard

Cheese


- Wheels, cartoned

Chewing Gum

Packaged, cartoned

Chocolate

Packaged, cartoned

Cloth



Cocoa Products

Packaged, cartoned

Coffee

Packaged, cartoned

Coffee Beans

Bagged

Corn stover - Baled and chopped (Neat- or static-piles)

Cotton

Packaged, cartoned

Diapers


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Cotton, linen

Dried Foods

Packaged, cartoned


Frozen


Frozen Foods

Plastic trays

Furniture

Wood



- Barley

- Rice

- Oats

Margarine


Mattresses


Nuts


- Bagged

Paper Products


Paper, Rolled

In racks or on side


Photographic Film






- Bagged resins

Rags

Baled

- Natural fibers

Shingles


Shock Absorbers

Plastic dust cover

Skis

Wood

Textiles




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50/50 blend or less


- Fabrics

Tobacco Products


Wood Products

- Spools (empty)






Once again, The solid biomass materials submitted to NFPA13 are intended to clarify the level of protection provided to certain “crop-residue” is to be identified as a Class III commodity. The supplementary material in the form of file, "HHV_INL_draft_002.xlsx" was prepared by Idaho National Laboratory to provide the NFPA13 Committee with 1) Results for heat of combustion performed at INL using the standard test methods of ASTM D5865-10a, Standard Test Method for Gross Calorific Value of Coal and Coke Using Either an Isoperibol or Adiabatic Bomb Calorimeter, 2) Results that the Laboratory has drawn from the literature, and 3) A simple spreadsheet from the publicly available "Engineering Toolbox" website showing values for a range of cellulosic biomass.






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Related Item






Street Address:

City:

State:

Zip:



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501 of 579 5/19/2014 1:50 PM

A.5.6.3.3


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Aerosols

Cartoned or exposed

- Level 1

Baked Goods



Beans

Dried


Bread

Wrapped, cartoned

Butter

Whipped spread

Candy

Packaged, cartoned

Cartons

Corrugated


Cereals

Packaged, cartoned

Charcoal

Bagged

- Standard

Cheese


- Wheels, cartoned

Chewing Gum

Packaged, cartoned

Chocolate

Packaged, cartoned

Cloth



Cocoa Products

Packaged, cartoned

Coffee

Packaged, cartoned

Coffee Beans

Bagged

Cotton

Packaged, cartoned

Diapers

Cotton, linen

Dried Foods


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Packaged, cartoned


Frozen


Forest residue, round wood, or chips - Branches, bark, cross-cut ends, edgings and treetops

Frozen Foods

Plastic trays

Furniture

Wood



- Barley

- Rice

- Oats

Margarine


Mattresses


Nuts


- Bagged

Paper Products


Paper, Rolled

In racks or on side


Photographic Film






- Bagged resins

Rags

Baled

- Natural fibers

Shingles


Shock Absorbers

Plastic dust cover

Skis

Wood

Textiles




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50/50 blend or less


- Fabrics

Tobacco Products


Wood Products

- Spools (empty)













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Related Item






Street Address:

City:

State:

Zip:



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A.5.6.3.3


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Aerosols

Cartoned or exposed

- Level 1

Baked Goods



Beans

Dried


Bread

Wrapped, cartoned

Butter

Whipped spread

Candy

Packaged, cartoned

Cartons

Corrugated


Cereals

Packaged, cartoned

Charcoal

Bagged

- Standard

Cheese


- Wheels, cartoned

Chewing Gum

Packaged, cartoned

Chocolate

Packaged, cartoned

Cloth



Cocoa Products

Packaged, cartoned

Coffee

Packaged, cartoned

Coffee Beans

Bagged

Cotton

Packaged, cartoned

Diapers

Cotton, linen

Dried Foods


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Packaged, cartoned


Frozen


Frozen Foods

Plastic trays

Furniture

Wood



- Barley

- Rice

- Oats

Margarine


Mattresses


Nuts


- Bagged

Paper Products


Paper, Rolled

In racks or on side


Peanut hulls - Neat- and loose-piles

Photographic Film






- Bagged resins

Rags

Baled

- Natural fibers

Shingles


Shock Absorbers

Plastic dust cover

Skis

Wood

Textiles




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50/50 blend or less


- Fabrics

Tobacco Products


Wood Products

- Spools (empty)




Department of Energy projected feedstock costs—including grower payment, grinding, and feeding into the throat of the conversion process—are in the range of $85/dry ton by 2017. Packaging and storage of peletized and ground corn stover in supersacks adds $53 per dry-metric-ton (dmt) to the cost for packaging alone; there are additional equipment and labor costs for the bagging and debagging operations. The sheer logistics of moving containerized biomass and the additional cost for the packaging essentially eliminate the viability of the approach. Upon recognizing this commercialization limitation, the BPICS has reconsidered its approach, thereby proposing only "static" and "loose-pile" configurations (minus the “bagged-supersak” and standard "collapsible shipping tote" categories.Once again, The solid biomass materials submitted to NFPA13 are intended to clarify the level of protection provided to certain “crop-residue” is to be identified as a Class III commodity. The supplementary material in the form of file, "HHV_INL_draft_002.xlsx" was prepared by Idaho National Laboratory to provide the NFPA13 Committee with 1) Results for heat of combustion performed at INL using the standard test methods of ASTM D5865-10a, Standard Test Method for Gross Calorific Value of Coal and Coke Using Either an Isoperibol or Adiabatic Bomb Calorimeter, 2) Results that the Laboratory has drawn from the literature, and 3) A simple spreadsheet from the publicly available "Engineering Toolbox" website showing values for a range of cellulosic biomass. This comparative and peer-reviewed literature review demonstrates that the heating values for a select set of biomass feedstock are less than those for the two grades of Coal (Bituminous and Sub Bituminous), Charcoal, and Wood [Douglas fir wood and Douglas fir bark (i.e., Furniture)] identified in Table A.5.6.3.3 for Class III Commodities. A comparative table (below) shows heating values for a select set of biomass feedstock relative to two grades of coal. http://www.engineeringtoolbox.com/biomass-fuels-hhv-d_1818.html


The Biomass Industry Panel on Codes and Standards (BPICS), led by Oak Ridge National Laboratory (ORNL), is an initiative of the Department of Energy Biomass Technologies Office (BTO). As part of the BTO integrated biorefinery efforts, the BIPCS was assembled to conduct analysis of existing fire and building codes and to prepare proposed code changes designed to facilitate the development of the commercial-scale biomass industry while maintaining a focus on safety. The committee is made up of managers, engineers and code officials from industry, government laboratories, consulting firms, and the American Society of Agricultural and Biological Engineers (ASABE). Fire codes related to storage, handling, and pre-processing of biomass are based on industries that operate in a significantly different manner than the growing biomass-based energy industry. Applying current research on


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biomass properties and knowledge of conventional and emerging storage, handling, and pre-processing technologies, the BIPCS has submitted changes to both the NFPA and ICC development processes intent on benefiting both industry and the public.

Related Item






Street Address:

City:

State:

Zip:



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A.5.6.3.3


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Aerosols

Cartoned or exposed

- Level 1

Baked Goods



Beans

Dried


Bread

Wrapped, cartoned

Butter

Whipped spread

Candy

Packaged, cartoned

Cartons

Corrugated


Cereals

Packaged, cartoned

Charcoal

Bagged

- Standard

Cheese


- Wheels, cartoned

Chewing Gum

Packaged, cartoned

Chocolate

Packaged, cartoned

Cloth



Cocoa Products

Packaged, cartoned

Coffee

Packaged, cartoned

Coffee Beans

Bagged

Cotton

Packaged, cartoned

Diapers

Cotton, linen

Dried Foods


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Packaged, cartoned


Frozen


Frozen Foods

Plastic trays

Furniture

Wood



- Barley

- Rice

- Oats

Margarine


Mattresses


Nuts


- Bagged

Paper Products


Paper, Rolled

In racks or on side


Photographic Film






- Bagged resins

Recovered construction wood - No plastic coverings or foam plastic cushioning

Rags

Baled

- Natural fibers

Shingles


Shock Absorbers

Plastic dust cover

Skis

Wood

Textiles




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50/50 blend or less


- Fabrics

Tobacco Products


Wood Products

- Spools (empty)








517 of 579 5/19/2014 1:50 PM


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Affilliation: Co-Chair, Biomass Industry Panel on Codes and Standards

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518 of 579 5/19/2014 1:50 PM



519 of 579 5/19/2014 1:50 PM

A.5.6.3.3


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Aerosols

Cartoned or exposed

- Level 1

Baked Goods



Beans

Dried


Bread

Wrapped, cartoned

Butter

Whipped spread

Candy

Packaged, cartoned

Cartons

Corrugated


Cereals

Packaged, cartoned

Charcoal

Bagged

- Standard

Cheese


- Wheels, cartoned

Chewing Gum

Packaged, cartoned

Chocolate

Packaged, cartoned

Cloth



Cocoa Products

Packaged, cartoned

Coffee

Packaged, cartoned

Coffee Beans

Bagged

Cotton

Packaged, cartoned

Diapers

Cotton, linen

Dried Foods


521 of 579 5/19/2014 1:50 PM

Packaged, cartoned


Frozen


Frozen Foods

Plastic trays

Furniture

Wood



- Barley

- Rice

- Oats

Margarine


Mattresses


Nuts


- Bagged

Paper Products


Paper, Rolled

In racks or on side


Photographic Film






- Bagged resins

Rags

Baled

- Natural fibers

Shingles


Shock Absorbers

Plastic dust cover

Straw - Baled and chopped

Skis

Wood

Textiles




522 of 579 5/19/2014 1:50 PM

50/50 blend or less


- Fabrics

Tobacco Products


Wood Products

- Spools (empty)








523 of 579 5/19/2014 1:50 PM


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Affilliation: Co-Chair, Biomass Industry Panel on Codes and Standards

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524 of 579 5/19/2014 1:50 PM



525 of 579 5/19/2014 1:50 PM

A.5.6.3.3


526 of 579 5/19/2014 1:50 PM



Aerosols

Cartoned or exposed

- Level 1

Baked Goods



Beans

Dried


Bread

Wrapped, cartoned

Butter

Whipped spread

Candy

Packaged, cartoned

Cartons

Corrugated


Cereals

Packaged, cartoned

Charcoal

Bagged

- Standard

Cheese


- Wheels, cartoned

Chewing Gum

Packaged, cartoned

Chocolate

Packaged, cartoned

Cloth



Cocoa Products

Packaged, cartoned

Coffee

Packaged, cartoned

Coffee Beans

Bagged

Cotton

Packaged, cartoned

Diapers

Cotton, linen

Dried Foods


527 of 579 5/19/2014 1:50 PM

Packaged, cartoned


Frozen


Frozen Foods

Plastic trays

Furniture

Wood



- Barley

- Rice

- Oats

Margarine


Mattresses


Nuts


- Bagged

Paper Products


Paper, Rolled

In racks or on side


Photographic Film






- Bagged resins

Rags

Baled

- Natural fibers

Shingles


Shock Absorbers

Plastic dust cover

Skis

Wood

Textiles



50/50 blend or less



528 of 579 5/19/2014 1:50 PM

- Fabrics

Tobacco Products


Wood chips - Neat- and loose-piles

Wood pellets - Neat- and loose piles

Wood Products

- Spools (empty)








529 of 579 5/19/2014 1:50 PM


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530 of 579 5/19/2014 1:50 PM



531 of 579 5/19/2014 1:50 PM

A.5.6.3.3


532 of 579 5/19/2014 1:50 PM



Aerosols

Cartoned or exposed

- Level 1

Baked Goods



Beans

Dried


Bread

Wrapped, cartoned

Butter

Whipped spread

Candy

Packaged, cartoned

Cartons

Corrugated


Cereals

Packaged, cartoned

Charcoal

Bagged

- Standard

Cheese


- Wheels, cartoned

Chewing Gum

Packaged, cartoned

Chocolate

Packaged, cartoned

Cloth



Cocoa Products

Packaged, cartoned

Coffee

Packaged, cartoned

Coffee Beans

Bagged

Cotton

Packaged, cartoned

Diapers

Cotton, linen

Dried Foods


533 of 579 5/19/2014 1:50 PM

Packaged, cartoned


Frozen


Frozen Foods

Plastic trays

Furniture

Wood



- Barley

- Rice

- Oats

Margarine


Mattresses


Nuts


- Bagged

Paper Products


Paper, Rolled

In racks or on side


Photographic Film






- Bagged resins

Rags

Baled

- Natural fibers

Shingles


Shock Absorbers

Plastic dust cover

Skis

Wood

Textiles



50/50 blend or less



534 of 579 5/19/2014 1:50 PM

- Fabrics

Tobacco Products


Wood Products

- Spools (empty)



Woody biomass, round wood or chipped - Vase-shaped bushes, bamboo, willows, branches, bark andstem-wood






535 of 579 5/19/2014 1:50 PM


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536 of 579 5/19/2014 1:50 PM



537 of 579 5/19/2014 1:50 PM

A.5.6.3.4


538 of 579 5/19/2014 1:50 PM


Table A.5.6.3.4 Examples of Class IV Commodities

Ammunition

Small arms, shotgun


Bottles, Jars

Empty, cartoned

- Plastic PET (polyethylene terephthalate)

Filled noncombustible powders

- Plastic, cartoned [less than 1 gal (3.8 L)]

Cartons

Corrugated

- Partially assembled

Cloth


- Synthetic a

Diapers

Disposable with plastics and nonwoven fabric (in cartons)

Fiberglass Insulation

- Paper-backed rolls, bagged or unbagged

Furniture

Wood

- With plastic coverings

Liquor

100 proof or less, 1 gal (3.8 L) or less, cartoned

- Glass (palletized) b

- Plastic bottles

Matches

Packaged, cartoned

- Paper

Nail Polish

1 oz to 2 oz (29.6 mL to 59.1 mL) glass, cartoned

Paints

Friction-top cans, cartoned

- Oil based

Paper, Rolled

In racks

- Lightweight

Paper, Waxed

Packaged in cartons

Pharmaceuticals

Pills, powders

- Plastic bottles, cartoned


539 of 579 5/19/2014 1:50 PM

Photographic Film

- Rolls in polycarbonate plastic cassettes, bulk wrapped in cardboard boxes

PVA (polyvinyl alcohol) Resins

Bagged

Rags

Baled

- Synthetic fibers

Rubber

Natural, blocks in cartons

Shingles

Asphalt-impregnated felt

Skis

Foam core

Textiles


50/50 blend or less

- Thread, yarn on plastic spools

Synthetics (except rayon and nylon) — greater than 50/50 blend


- Fabrics

Rayon and nylon

- Baled fiber


- Fabrics

Vinyl Floor Coverings

Tiles in cartons

Wax-Coated Paper

Cups, plates

- Boxed or packaged inside cartons (emphasis is on packaging)

Wire

- Bare wire on plastic spools in cardboard boxes on wood skids

- Single- or multiple-layer PVC-covered wire on plastic spools in cardboard boxes on wood skids

- Single, multiple, or power cables (PVC) on large plastic spools

Wood Products

Patterns

a Tests clearly indicate that a synthetic or synthetic blend is considered greater than Class III.

b Where liquor is stored in glass containers in racks, it should be considered a Class III commodity; where itis palletized, it should be considered a Class IV commodity.


Listing PET as a Class IV commodity in A.5.6.3.4 and excluding it in A.5.6.4.1 conflicts with PET being defined as a Group A plastic in 5.6.4.1(9).

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540 of 579 5/19/2014 1:50 PM




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541 of 579 5/19/2014 1:50 PM



542 of 579 5/19/2014 1:50 PM

A.5.6.4.1


543 of 579 5/19/2014 1:50 PM


Table A.5.6.4.1 Examples of Group A Plastic Commodities

Batteries

Truck or larger

- Empty or filled a

Bottles, Jars

Empty, cartoned

- Plastic

(other than PET)

, any size

Filled noncombustible liquids

- Plastic, open or solid plastic crates b

Filled noncombustible powders

- Plastic, cartoned or exposed [greater than 1 gal (3.8 L)]

- Plastic, solid plastic crates

- Plastic, open plastic crates

Candles

Packaged, cartoned

- Treat as expanded plastic

Carpet Tiles

Cartoned

Cartons

Wax coated, single walled

Diapers

Disposable with plastics and nonwoven fabric (exposed), plastic wrapped

Furniture

Wood

- With foam plastic cushioning

Lighters

Butane

- Blister-packed, cartoned

Margarine

Between 50 percent and 80 percent oil (in any packaging)

Matches

Packaged, cartoned

- Wood

Mattresses

Foam (in finished form)

Milk

Containers in plastic crates

Nail Polish

1 oz to 2 oz (29.6 mL to 59.1 mL) plastic bottles, cartoned

Paper Products

Tissue products, exposed and plastic wrapped

Plastic Containers


544 of 579 5/19/2014 1:50 PM

- Combustible or noncombustible solids in plastic containers and empty plastic containers

- Noncombustible liquids or semiliquids (such as ketchup) in plastic containers with nominal wall

thickness greater than 1 ⁄ 4 in. (6.4 mm) and larger than 5 gal (18.9 L) capacity

Polyurethane

Cartoned or exposed expanded

Rubber

Synthetic

Stuffed Toys

Foam or synthetic

Textiles


50/50 blend or less

- Baled fiber

Synthetics (except rayon and nylon) — greater than 50/50 blend

- Baled fiber


Rayon and nylon


Vinyl-Coated Fabric

Cartoned

Vinyl Floor Coverings

Rolled

Wax-Coated Paper

Cups, plates

- Loose inside large cartons

Wax

Paraffin/petroleum wax, blocks, cartoned

Wire

Bulk storage of empty plastic spools

a Most batteries have a polypropylene case and, if stored empty, should be treated as a Group A plastic.Truck batteries, even where filled, should be considered a Group A plastic because of their thicker walls.

b As the openings in plastic crates become larger, the product behaves more like Class III. Conversely, asthe openings become smaller, the product makeup behaves more like a plastic.


Listing PET as a Class IV commodity in A.5.6.3.4 and excluding it in A.5.6.4.1 conflicts with PET being defined as a Group A plastic in 5.6.4.1(9).



Public Comment No. 308-NFPA 13-2014 [Section No. A.5.6.3.4]

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545 of 579 5/19/2014 1:50 PM




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546 of 579 5/19/2014 1:50 PM

Public Comment No. 204-NFPA 13-2014 [ Sections A.11.2.3.1.4(3), A.11.2.3.1.4(4)(d),

A.11.2.3.1.4(... ]

Sections A.11.2.3.1.4(3), A.11.2.3.1.4(4)(d), A.11.2.3.1.4(4)(j)

A.11.2 1 .3 8 .1.4(3)

This section is included to compensate for possible delay in operation of sprinklers from fires in combustibleconcealed spaces found in wood frame, brick veneer, and ordinary construction.

In order for the minimum 3000 ft2 (279 m2) requirement for the size of the remote area to not be extendedto the adjacent area, the qualifying concealed space must be separated by the entire fire-rated assembly.Such assemblies often have combustible structural members separating the exterior membranes that cancreate a concealed combustible space that can qualify for omitting sprinkler protection. If the fire-ratedassembly is the qualifying concealed space, an interior fire would greatly reduce the assigned fire-ratedduration.

A.11.2 1 .3 8 .1.4 2 (4 9 )(d)

Composite wood joists are not considered solid wood joists for the purposes of this section. Their webmembers are too thin and easily penetrated to adequately compartment a fire in an unsprinklered space.Application of this item is not affected by the depth of the joist channel except in determining the volume.The concealed space above the insulation can be an attic, roof space, or floor space within a floorassembly.

A.11.2 1 .3 8 .1.4 2 (4 10 )(j)

The gypsum board (or equivalent material) used as the firestopping will compartment the concealed space

and restrict the ability for fire to spread beyond 160 ft3 (4.5 m3) zones covering multiple joist channels.



Moved location of annex text to correlate with relocation of text to section 11.1. The format is hard to read but the new locations are: A.11.1.8.1 / A.11.1.8.2(9) / A/11.1.8.2(10)

The text between A.11.2.3.1.4(3) / A.11.2.3.1.4(4)(d) / A.11.2.3.1.4(4)(j) and A.12.9.1 / A.12.9.2(4) / A.12.9.2(10) are identical except that chap 12 is missing the first paragraph of ch 11 explaining why a larger area is needed.





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559 of 579 5/19/2014 1:50 PM

Public Comment No. 332-NFPA 13-2014 [ New Section after A.12.1.3 ]

A.12.1.3.1.4

In the example shown in Figure A.12.1.3.1.4, the maximum ceiling height shown is 30 feet. Sprinklerprotection under the highest part of the ceiling must be designed for that height to a point at least 15 feetbeyond where the ceiling height drops to 25 feet. Sprinkler protection beyond that point may be designedfor a 25 foot ceiling.



SlopedRoofHeight.jpg Figure A.12.1.3.1.4


This proposal clarifies the proper design height requirements for sprinklers under a roof with a pitch of 2:12 or less.



Public Comment No. 326-NFPA 13-2014 [New Section after 12.1.3.1.3.2]

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560 of 579 5/19/2014 1:50 PM


A.12.1.4

A series of 10 full-scale fire tests and limited-scale testing were conducted to determine the impact ofHVLS fan operation on the performance of sprinkler systems. The project, sponsored by the PropertyInsurance Research Group (PIRG) and other industry groups, was coordinated by the Fire ProtectionResearch Foundation (FPRF). The complete test report, High Volume/Low Speed Fan and SprinklerOperation — Ph. 2 Final Report (2011) , is available from the FPRF. Both control mode density area andearly suppression fast response sprinklers were tested. Successful results were obtained when the HVLSfan was shut down upon the activation of the first sprinkler followed by a 90-second delay. Other methodsof fan shutdown were also tested including shutdown by activation of air sampling–type detection andionization-type smoke detectors. Earlier fan shutdown resulted in less commodity damage.


Correlates with deleting 12.1.4

Redundancy task group initiated this PC



Public Comment No. 107-NFPA 13-2014 [Section No. 12.1.4]

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561 of 579 5/19/2014 1:50 PM


A.12.3

The situation frequently arises where a small area of a higher hazard is surrounded by a lesser hazard. For

example, consider a 600 ft2 (55.7 m2) area consisting of 10 ft (3.05 m) high on-floor storage of cartonedunexpanded plastic commodities surrounded by a plastic extruding operation in a 15 ft (4.57 m) highbuilding. In accordance with Chapter 12, the density required for the plastic storage must meet therequirements for extra hazard (Group 1) occupancies. The plastic extruding operation should be consideredan ordinary hazard (Group 2) occupancy. In accordance with Chapter 11, the corresponding discharge

densities should be 0.3 gpm/ft2 (12.2 mm/min) over 2500 ft2 (232 m2) for the storage and 0.2 gpm/ft2 (8.1

mm/min) over 1500 ft2 (139 m2) for the remainder of the area. (Also see Chapter 11 for the requiredminimum areas of operation.)

If the storage area is not separated from the surrounding area by a wall or partition (see 11.1.2), the size ofthe operating area is determined by the higher hazard storage.

For example, the operating area is 2500 ft2 (232 m2). The system must be able to provide the 0.3 gpm/ft2

(12.2 mm/min) density over the storage area and 15 ft (4.57 m) beyond. If part of the remote area is outside

the 600 ft2 (55.7 m2) plus the 15 ft (4.57 m) overlap, only 0.2 gpm/ft2 (8.1 mm/min) is needed for thatportion.

If the storage is separated from the surrounding area by a floor-to-ceiling/roof partition that is capable ofdelaying heat from a fire on one side from fusing sprinklers on the other side, the size of the operating area

is determined by the occupancy of the surrounding area. In this example, the design area is 1500 ft2 (139

m2). A 0.3 gpm/ft2 (12.2 mm/min) density is needed within the separated area with 0.2 gpm/ft2 (8.1mm/min) in the remainder of the remote area.

Where high temperature–rated sprinklers are installed at the ceiling, high temperature–rated sprinklers alsoshould extend beyond storage in accordance with Table A.12.3.

When the small higher hazard area is larger than the required minimum area dictated by the surroundingoccupancy, even when separated by draft curtains, barriers, or partitions capable of delaying heat, the sizeof the operating area is determined by the higher hazard storage.

Table A.12.3 Extension of Installation of High-Temperature Sprinklers over Storage

Design Area for High Temperature–RatedSprinklers

Distance Beyond Perimeter of High Hazard

Occupancy for High Temperature–RatedSprinklers

ft 2 m 2 ft m

2000 185.8 30 9.14

3000 278.7 40 12.2

4000 371.6 45 13.72

5000 464.5 50 15.24

6000 557.4 55 16.76



LGK_NFPA_13-2013_Comment_A-12-3.pdf PC Form


The addition of text referencing draft curtains was not requested in PI 349 and the Technical Committee has not


562 of 579 5/19/2014 1:50 PM

provided any substantiation for the addition. Further since a draft curtain does not go from floor-to-ceiling, the reference to it is in conflict with the ideas expressed in the 4th paragraph of A.12.3. Also, as per A.12.1.1.3, draft curtains have been shown to have a negative impact on sprinkler effectiveness and extreme care needs to be taken to minimize any potential impacts, so it is inappropriate to imply that they may be beneficial in the Section A.12.3 discussion about the size of design areas.

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Public Input No. 349-NFPA 13-2013 [Section No. A.12.3]




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563 of 579 5/19/2014 1:50 PM


A.12.3

The situation frequently arises where a small area of a higher hazard is surrounded by a lesser hazard. For

example, consider a 600 ft 2 (55.7 m 2 ) area consisting of 10 ft (3.05 m) high on-floor storage of cartonedunexpanded plastic commodities surrounded by a plastic extruding operation in a 15 ft (4.57 m) highbuilding. In accordance with Chapter 12, the density required for the plastic storage must meet therequirements for extra hazard (Group 1) occupancies. The plastic extruding operation should be consideredan ordinary hazard (Group 2) occupancy. In accordance with Chapter

11

, the corresponding discharge densities should be 0

.

3 gpm/ft 2 (12.2 mm/min) over 2500 ft 2 (232 m 2 ) for the storage and 0.2 gpm/ft 2 (8.

1

mm/min) over 1500 ft 2 (139 m 2 ) for the remainder of the area

.

(Also see Chapter 11 for the required minimum areas of operation.)

If the storage area is not separated from the surrounding area by a wall or partition (see 11.1.2 ), the sizeof the operating area is determined by the higher hazard storage.

For example, the operating area is 2500 ft 2 (232 m 2 ). The system must be able to provide the 0.3

gpm/ft 2 (12.2 mm/min) density over the storage area and 15 ft (4.57 m) beyond. If part of the remote area

is outside the 600 ft 2 (55.7 m 2 ) plus the 15 ft (4.57 m) overlap, only 0.2 gpm/ft 2 (8.1 mm/min) is neededfor that portion.

If the storage is separated from the surrounding area by a floor-to-ceiling/roof partition that is capable ofdelaying heat from a fire on one side from fusing sprinklers on the other side, the size of the operating area

is determined by the occupancy of the surrounding area. In this example, the design area is 1500 ft 2 (139

m 2 ). A 0.3 gpm/ft 2 (12.2 mm/min) density is needed within the separated area with 0.2 gpm/ft 2 (8.1mm/min) in the remainder of the remote area.

2

Where high temperature–rated sprinklers are installed at the ceiling, high temperature–rated sprinklers alsoshould extend beyond storage in accordance with Table A.12.3.

When the small higher hazard area is larger than the required minimum area dictated by the surroundingoccupancy, even when separated by draft curtains, barriers, or partitions capable of delaying heat, the sizeof the operating area is determined by the higher hazard storage.

Table A.12.3 Extension 11.1.2 Extension of Installation of High-Temperature Sprinklers over Storage

Design Area for High Temperature–RatedSprinklers

Distance Beyond Perimeter of High Hazard

Occupancy or Storage for High Temperature–RatedSprinklers

ft2 m2 ft m

2000 185.8 30 9.14

3000 278.7 40 12.2

4000 371.6 45 13.72

5000 464.5 50 15.24

6000 557.4 55 16.76


564 of 579 5/19/2014 1:50 PM


Redundancy task group initiated this PC

Text identical to A.11.1.2 except last paragraph and Table. Note that the Table refer to an occupancy verses storage.




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565 of 579 5/19/2014 1:50 PM

Public Comment No. 200-NFPA 13-2014 [ Sections A.12.7.2, A.12.7.2(3) ]

Sections A.12.7.2, A.12.7.2(3)

A.12.7.2

When a light hazard occupancy, such as a school, contains separate ordinary hazard storage rooms no

more than 400 ft 2 (37.2 m 2 ), the hose stream demand would be that required for a light hazardoccupancy.

A.12.7.2(3)

When a light hazard occupancy, such as a school, contains separate ordinary hazard rooms no more than

400 ft 2 (37.2 m 2 ), the hose stream allowance and water supply duration would be that required for a lighthazard occupancy.


This PC was initiated by the redundancy task group

These sections were deleted to correlate with deleting 12.7.2 Additionally A.12.7.2 is a repeat of A.12.7.2(3) plus it is an example using light hazard occupancy.



Public Comment No. 108-NFPA 13-2014 [Section No. 12.7.2]

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566 of 579 5/19/2014 1:50 PM

Public Comment No. 203-NFPA 13-2014 [ Sections A.12.8.1, A.12.8.2 ]

Sections A.12.8.1, A.12.8.2

A.12.8.1

Where tanks serve sprinklers only, they can be sized to provide the duration required for the sprinklersystem, ignoring any hose stream demands. Where tanks serve some combination of sprinklers, insidehose stations, outside hose stations, or domestic/process use, the tank needs to be capable of providingthe duration for the equipment that is fed from the tank, but the demands of equipment not connected tothe tank can be ignored. Where a tank is used for both domestic/process water and fire protection, theentire duration demand of the domestic/process water does not need to be included in the tank ifprovisions are made to segregate the tank so that adequate fire protection water is always present or ifprovisions are made to automatically cut off the simultaneous use in the event of fire.

A.12.8.2

Where pumps serve sprinklers only, they can be sized to provide the flow required for the sprinkler system,ignoring any hose stream demands. Where pumps serve some combination of sprinklers, inside hosestations, or outside hose stations, the pump needs to be capable of providing the flow for the equipmentthat is fed from the pump, but the demands of equipment not connected to the pump can be ignored.


This PC was initiated by the redundancy task group

Deletion of annex correlates with deleting 12.8.1 and 12.8.2. This text is identical to A.11.1.5.2 and A.11.1.5.3 except A.12.8.2 is missing a portion of the last sentence in A.11.1.5.3: ....except for evaluating their impact on the available water supply to the pump."



Public Comment No. 110-NFPA 13-2014 [Sections 12.8.1, 12.8.2, 12.8.3, 12.8.4, 12.8.5]

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567 of 579 5/19/2014 1:50 PM


A.12.9.1

In order for the minimum 3000 ft 2 (279 m 2 ) requirement for the size of the remote area to not beextended to the adjacent area, the qualifying concealed space must be separated by the entire fire-ratedassembly. Such assemblies often have combustible structural members separating the exteriormembranes that can create a concealed combustible space that can qualify for omitting sprinklerprotection. If the fire-rated assembly is the qualifying concealed space, an interior fire would greatly reducethe assigned fire-rated duration.


The redundancy task group initiated this PC.

Correlates with moving 12.9.1 to section 11.1





Public Comment No. 204-NFPA 13-2014 [Sections A.11.2.3.1.4(3), A.11.2.3.1.4(4)(d),A.11.2.3.1.4(...]

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568 of 579 5/19/2014 1:50 PM


A.16.1.6.7 The adjustments in 16.2.1.3.4 apply to solid shelves when exceeding the minimum requiredlevel of in-rack sprinklers from an open rack option.


This clarifies that although additional sprinklers are required due to the solid shelving, the reduction to ceiling density allowed in 16.2.1.3.4 for additional in-rack sprinklers still applies.




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569 of 579 5/19/2014 1:50 PM

Public Comment No. 305-NFPA 13-2014 [ Section No. A.16.2.1.3.4.6 ]

A.16.2.1.3.4.6

It is not the intent that an in-rack sprinkler be installed above the top-tier of storage when utilizing “in-racksprinklers in every tier.”


The annex note makes clear that the intent of the committee to require in rack sprinklers in every tier does not include an in-rack sprinkler above the top tier of storage, which is protected by the ceiling sprinklers. As an annex note cannot override the body of the standard, this wording should be in the body of the standard

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First Revision No. 206-NFPA 13-2013 [New Section after A.16.2.1.3.2.1]





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571 of 579 5/19/2014 1:50 PM

Delete the note that was added following Figure A.23.3.2 (d) and revise Figure A.23.3.2 (c) as originallyproposed.

A.23.3.2


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See Figure A.23.3.2(a) through Figure A.23.3.2(d).

Figure A.23.3.2(a) Summary Sheet.

Figure A.23.3.2(b) Hydraulic Calculation Example (Plan View and Elevation View).

Figure A.23.3.2(c) Hydraulic Calculations.


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Figure A.23.3.2(d) Hydraulic Graph.

Node 4 includes tee at top and bottom of riser nipple included with branch line due to consistent pipe sizefrom the pervious node.



LGK_NFPA_13-2013_Comment_A-23-3-2.pdf PC Form


As per the Committee Statement a new line was to be added to the Hydraulic Calculation illustrated in Figure A.23.3.2(c). Instead, a Note was inserted into the First Draft Report following Figure A.23.3.2 (d). This Note makes references to "Node 4" whereas Figure A.23.3.2 (c) lists "Steps". Therefore, the message is both obscure and improperly located. The Note should be deleted and Figure A.23.3.2 (c) should be revised as originally proposed.

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574 of 579 5/19/2014 1:50 PM

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575 of 579 5/19/2014 1:50 PM

Public Comment No. 341-NFPA 13-2014 [ New Section after A.23.4.1 ]

A.23.4.1.4

NFPA 13 does not provide a specific velocity limitation for the use of the Hazen-Williams formula. This is, inpart, due to an expectation that excessive friction loss values will result in increasing pipe sizes, therebyserving as an inherent limit on velocity. However, the fact that NFPA 13 does not provice a specific limitshould not be taken as an endorsement that the formula may be used for any velocity of water flow. Theformula was empirically determined using "normal" conditions. When the velocity in the pipe exceeds thatwhich was used to determine the formula, the formula may no longer be valid. There has been someresearch performed (Huggins: 1996) in which results using the Hazen Williams formula and Darcy-Weisbach formula were compared and the conclusion was that a specific velocity limit applied to all pipesizes is not appropriate.

Huggins, Roland, "Water Velocity: Its Impact on the Accuracy of Hydraulic Calculations", September, 1996


The current text could be read to say that there is no reason to limit the velocity when using the Hazen-Williams formula.

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A.24.2.2.2.1 Consider the following example. A waterflow test is conducted at a location where a city watermain is going to be tapped for a new sprinkler system. During the test, the static pressure is measured at70 psi, the residual pressure is measured at 50 psi while 1300 gpm was discharging from a nearbyhydrant. The water utility is contacted and they indicate that a reasonable low static pressure accountingfor typical daily and seasonal fluctuations in this area is 55 psi and that a reasonable low residual pressureaccounting for typical daily and seasonal fluctuations in this area at a flow of 1300 gpm is 35 psi. Theequation that describes the water supply available for a fire sprinkler system would be:

There are two ways to use this formula. One would be to assume two different values for Q, calculate Pand then draw a graph on log 1.85 paper. Any fire sprinkler system demand falling on or below the line onthis graph would be acceptable in accordance with NFPA 13 to work with this water supply. In this case,the two easiest flows to pick for Q would be 0 and 1300 gpm. When Q = 0, P is simply 55 psi. When Q =1300 gpm, P = 35 psi. These two points can be plotted on log 1.85 paper as shown in Figure A.24.2.2.2.1.

The second way to use this formula would be to calculate the fire protection system and determine the flownecessary to make the system work. Plug this flow into the formula above and see what the availablepressure from the water supply will be at that flow. For example, if a sprinkler system connected to thiswater supply had a demand of 580 gpm, the available pressure from the water supply would be:

P = (-20)(0.225) 55

P = 50.5 psi

So, as long as the sprinkler system has a pressure demand less than or equal to 50.5 psi, it will work withthis water supply.


A.24.2.2.1.3 The purpose of the adjustment required by this section is to take into account reasonablefluctuations that occur on a daily and seasonal basis, but not to burden the building owner with extremeconditions. During an extreme condition such as a water main break or a severe drought, the impairedsystem provisions of NFPA 25 can be employed to mitigate the circumstances of the extreme condition.

The intent of this section is to apply the adjustment to the raw data obtained by the flow test and not toapply adjustments to values that have already been adjusted by water utilities. If a water utility has alreadyprovided flow and pressure data for use in the design of fire protection systems that already includesadjustments for daily and seasonal water usage, there is no need to make any additional adjustments tothis data.

A.24.2.2.1.4 See annex note A.24.2.2.1.3.

A.24.2.2.1.6 Water utilities are the entities that know their own supplies the best and know what appropriateadjustments need to be made to flow test data to provide reasonable fire protection. In the potentialsituation where the water utility will not make a definitive statement with regard to an adjustment, the fireprotection engineer is the person that would need to make a statement with respect to adjustments to theraw data from a flow test. Due to the judgment involved in making such a decision, the licensing laws inmost states within the United States would require the fire protection engineer to make this determinationrather than the fire protection system contractor. It is expected that the engineer would make thesestatements in the specifications provided to the fire protection system contractor. In the absence of anyinformation from any authority on the subject, section 24.2.2.2.2 provides a standardized method of makinga decision.

A.24.2.2.2.2 Section 24.2.2.2.2 provides a standardized method of making a decision regarding thereduction of the results from a waterflow test to determine what pressure and flow are available from awater supply when the specifying engineer and the water utility have not provided adjustment information. An example of how to use this standardized method follows.


577 of 579 5/19/2014 1:50 PM

If a waterflow test is conducted at a location where a city water main is going to be tapped for a newsprinkler system and the static pressure is measured at 70 psi, with the residual pressure measured at 50psi while 1300 gpm was discharging from a nearby hydrant. If there is no information from the specifyingengineer or water utility regarding appropriate adjustments, the value of the static pressure and residualpressure need to be reduced by 5%.

The static pressure would be adjusted from 70 psi to 66.5 psi (70 x 0.95 = 66.5).

The residual pressure at 1300 gpm would be reduced from 50 psi to 47.5 psi (70 x 0.95 = 47.5).

The results would be plotted on log 1.85 graph paper as shown in the lower curve on Figure A.24.2.2.2.2and that curve would represent what the fire protection system contractor could use for a fire protectionsystem.




Water_Supply_Adjustment_Proposal-E_S-13.pdf The whole comment with figures and equations



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578 of 579 5/19/2014 1:50 PM




( ) 2

85.1

121 P

QQPPP +

−=




( ) 551300

553585.1

+

−=

QP


( ) 551300

5805535

85.1

+

−=P

P = (-20)(0.225) + 55

P = 50.5 psi



A.24.2.2.2

An adjustment to the waterflow test data to account for daily and seasonal fluctuations, possibleinterruption by flood or ice conditions, large simultaneous industrial use, future demand on the water supplysystem, or any other condition that could affect the water supply should be made as appropriate.



Water_Supply_Adjustment_Proposal-E_S-13.pdf

This is the whole proposal with figures and equations



Related Item






Street Address:

City:

State:

Zip:



579 of 579 5/19/2014 1:50 PM




( ) 2

85.1

121 P

QQPPP +

−=




( ) 551300

553585.1

+

−=

QP


( ) 551300

5805535

85.1

+

−=P

P = (-20)(0.225) + 55

P = 50.5 psi
