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Urban AcousticsUrban AcousticsUrban AcousticsUrban AcousticsPresented By:Presented By:yy

Design Professionals

Lighting Design

Technology LightingAudio Video SystemsRoom Acoustics

AcousticsLighting DesignFixture Layout

Fixture Specification

Audio Video SystemsTelepresence

Sound Masking/Paging

Room AcousticsSound IsolationMechanical Noise

ControlsDaylighting

Structured CablingSecurity

Vibration IsolationEnvironmental Noise

“The Wood Products Council” is aRegistered Provider with The AmericanInstitute of Architects ContinuingEducation Systems (AIA/CES), Provider

This course is registered with AIA CES forcontinuing professional education. Assuch, it does not include content thatmay be deemed or construed to be an

l d t b th AIA f#G516. approval or endorsement by the AIA ofany material of construction or anymethod or manner ofhandling, using, distributing, or dealingin any material or product.

Credit(s) earned on completion of thiscourse will be reported to AIA CES forAIA members. Certificates of Completionfor both AIA members and non AIA

y p___________________________________________

Questions related to specific materials, methods,and services will be addressed at the conclusion ofthis presentation.

members are available upon request.p

Urban AcousticsSteve(n) Thorburn, PE, LEED AP, CTS I, CTS D, Thorburn Associates

As with any issue of building performance the acoustics of a mixed use wood frameAs with any issue of building performance, the acoustics of a mixed use wood framestructure can be designed to meet or far exceed minimal requirements. It is theresponsibility of the design team to determine acoustical expectations for the projectand meet them within the available budget.

Through the use of case studies, this fast paced, interactive session will explore howmulti story wood systems can be used to meet acoustical privacy goals. Discussion willfocus on the detailing and construction of units, and how consideration of theconstruction process can help keep acoustical costs down.construction process can help keep acoustical costs down.

With the objective of providing implementable solutions, the session will includeconstruction details and photos showing what has and hasn’t worked in actualbuildingsbuildings.

Learning Objectivesea g Object es

At the end of this program, participants will be able to:At the end of this program, participants will be able to:

Evaluate the acoustical impact of ICC Building Code vs. ResidentialExpectationsDevelop cost effective / acoustically centric space planning ideas for woodDevelop cost effective / acoustically centric space planning ideas for woodframe designProduce practical and constructible acoustical isolation detailing for woodframe designframe designIdentify common acoustical compromises during construction

Urban AcousticsUrban AcousticsUrban AcousticsUrban Acoustics

Mixed UseMixed Use


The Building CodeThe Building CodeThe Building CodeThe Building Code

Acoustical Expectations

Luxury? Market Rate? Entry Level?

Slide 14

FHA Rules of Thumb from 1962

Entry Level HousingNOTE THIS IS NOT A CODE, IT HAS BECOME the DE FACTO STANDARD BUT NOT CODE

Entry Level HousingSTC 50 / IIC 50 (STC /IIC 48)*

Market Rate HousingMarket Rate HousingSTC 55 / IIC 55 (STC/IIC 52)*

Luxury Rate HousingLuxury Rate HousingSTC 60+ / IIC 60+ (STC/IIC 55)*

IIC 60+ very hard to achieve with wood or tile surfacesy

* Actual 1962 values – adjust when IBC set “50” as minimum

ICC G2 2010 Guideline for AcousticsSTILL NOT A CODE, IT IS FROM THE ICC –

FROMWHAT APPEARS TO BE A RESEARCH PAPER FROM THE INTERNET!

Acceptable Performance Preferred Performance“Grade B Performance”

55 / 52“Grade A Performance”

60 / 57(Laboratory / Field)Airborne STC / NNIC

(Laboratory / Field)Airborne STC / NNIC

Impact IIC / NISR Impact IIC / NISR

Land Use Compatibility For Community Noise

Exterior Day/Night Noise Levels (Ldn, dBA)Land Use Category

Single Family

55 60 65 70 75 80

Multi Family

Motel, HotelsMotel, Hotels

Outside Use

NormallyAcceptable

ConditionallyAcceptable

NormallyUnacceptable

ClearlyUnacceptable

Exterior to Interior

Mixed Use – Bar to Housing Commercial to Residential

BEFORE GET RID OF THE PROBLEM

Commercial to Residential

Not Addressed by Building Code- Implied at 45 dBA /Ldn

(Interior Noise Criterion)- Enforced as Nuisance Complaints


VocabularyVocabularyVocabularyVocabulary

Terms (They Are Changing!)

SoundSTC

ImpactGeneralNR STC

FSTCIICFIIC

NRdBA

NICASTC

FIICAIICLdn

CNEL ASTCNNIC

NISRCNELOITC

NC NRC

Urban AcousticsUrban Acoustics VocabularyVocabulary


AcousticalAcousticalAcousticalAcousticalWall SystemsWall SystemsWall SystemsWall Systems

Acoustical Detailing – The Givens

• Walls are Full Height(Deck to Deck)

• Insulated (Unfaced Batt)In all Stud or Joist Cavities

• Sealed Air TightSealed Air Tight• Floor Sheeting

Is Glued and ScrewedIs Glued and Screwed

Wall Progression – Sound Isolation

STC 34 STC 38 STC 45

Wall Progression – Sound Isolation

STC 50 STC 63 STC 49

Metal Channels

Hat ChannelsAre Not

Acoustical Channels

Resilient ChannelsAre

Acoustical ChannelsAcoustical Channels

Slide 30

Puck Resilient Isolator Lot Line Wall – Sound Isolation

Urban AcousticsUrban AcousticsUrban AcousticsUrban AcousticsAcousticalAcoustical

Floor / Ceiling SystemsFloor / Ceiling SystemsSound and ImpactSound and Impact

Floor Systems

STC 37

Floor Systems

STC 43

Floor Systems

STC 49

Floor Systems – Topping Slab

Gypcreteoror

Light Weigh Concrete

Floor Systems

STC 56

Floor Systems

STC 62

Floor Systems

Batt insulation not show for clarity

Floor Systems


Floor Systems


Floor Systems


Impact Noise

Impact Isolation

• Impact noise changes as it travels in the building.• Impact noise is best controlled at the source.

Effects of Floor Coveringon Impact Isolationon Impact Isolation

IIC 73 IIC 64 IIC 56 IIC 43 IIC 32


IIC 73 IIC 64 IIC 56 IIC 43

STC 56

Cross Laminated Timber

70+70+

Cross Laminated TimberACOUSTICALLY STILL REALLY NEW

We Need More Test DataWe Need More Test Data

70+In absence of test data we compareto known acoustical systems70+to known acoustical systems


"Volume generallyassumed for the densityof hardened concrete is150 lb./ft3. (2400 kg/m3)“

McGraw Hill Encyclopediaf S i dof Science andTechnology.


6 inch thick 20 lb./ft3. CLTSame Mass as

1.6 inch thick Concrete

Based on AcousticsMass Law STC Rating

b 38 STCabout 38 STC

Cross Laminated Timber Cross Laminated Timber

70+ IIC 3570+ IIC 35


LeaksLeaks Doors and WindowsDoors and WindowsLeaksLeaks Doors and WindowsDoors and WindowsLeaks:Leaks: Where air can flow...

Slide 54...so will sound.

Air Tight Seal Insulation


Other Issues to ConsiderOther Issues to ConsiderOther Issues to ConsiderOther Issues to Consider

Acoustical Fiction!

• Fiber Board

Acoustical Fiction!

• Trapped Channel

Plumbing Isolation

Slide 62

OMG!

THIS IS VERYBAD! DO NOTBELIEVE THEINTERNET!

OMG!

THIS IS VERYBAD! DO NOTBELIEVE THEINTERNET!

OMG!When it comes to AcousticsWhen it comes to AcousticsOnly Believe Real LaboratoryOnly Believe Real LaboratoryTest Data or Someone you PayTest Data or Someone you Pay

and can Sue!and can Sue!

Urban AcousticsUrban Acoustics

This concludes The AmericanInstit te of Architects Contin ingInstitute of Architects ContinuingEducation Systems Course Steve(n) Thorburn, PE, LEED AP

Thorburn Associates Inc.

This presentation was developedby a 3rd party and is not funded byWoodWorks or the Softwood

SJT@TA Inc.com

WoodWorks or the SoftwoodLumber Check Off Program

Credits• California Noise Control Office – Green Book (out

of print)• PAC International, Inc. (Risc 1 Isolator)

http://www.pac intl.com/• USG – Acoustics Collection of STC test reports (out

of print)• FHA Multifamily housing (out of print)• EPA Levels document (out of print)

• Gyp Crete http://www.maxxon.com/• Ceramic Tile Institute of America

http://www.ctioa.org/• The National Council of Acoustical ConsultantsEPA Levels document (out of print)

• USG Handbook for Gypsum Board Installation• ICC G2 2010 Guideline for Acoustics• Clark Dietrich Metal Framing

The National Council of Acoustical Consultantshttp://www.ncac.com/

• Thorburn Associates – http://www.TA Inc.com/• Mullins Acoustics http://mullinsacoustics.com/

www.clarkdietrich.com/• Homasote http://www.homasote.com/• National Gypsum Company

http://www nationalgypsum com/

• Lilly Acoustics http://www.jglacoustics.com/• WoodWorks.org• Cross Laminated Timber Handbook

http://www.nationalgypsum.com/

Urban AcousticsUrban AcousticsUrban AcousticsUrban AcousticsTh k Y !!!Th k Y !!!Thank You!!!Thank You!!!

St ( ) Th b PE LEED APSt ( ) Th b PE LEED APSteve(n) Thorburn, PE, LEED APSteve(n) Thorburn, PE, LEED APsjt@TAsjt@TA Inc comInc comsjt@TAsjt@TA Inc.comInc.com

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