canadian code centre presentation - october 2012

Canadian Codes Centre – TRC Update – October 2012

Codes – Update

NRC Canadian Codes Centre

Nedjma BelrechidOctober 2012


Codes Update

Outline– Activities of CCBFC, PTPACC, NRC-IRC– Code Development – Public Reviews– Active/Inactive SC Tasks

• Detailed:– Step Dimensions in Dwelling Units– Climbable Guards– Residential Sprinklers– Grab Bars– Stairs, Ramps, Handrails and Guards


Activities of CCBFC, PTPACC, NRC-IRC

CCBFC– Interim Change to the ASTM Nailing standard– Proposed changes regarding EEHSB– Adaptation Guidelines for the NECB– Development of Adaptation Guidelines for the EEHSB– Report and plan of the JTG on water use efficiency,

objective and scoping


Code Development Update

Public Review 2012 (September 24th to November 16)

• 1 PCF for Part 9: Electromagnetic locking (EML) devices – EML devices can be installed on the access to exit doors

http://www.nationalcodes.nrc.gc.ca


Policy–Related Activities• Mandatory Sprinklers in Houses

– TG Mandate: Review cost/benefit data & asses technical merit– TG Status: STG on Cost met 3 times

STG on Benefit met one timeJTG met one timeNext face to face JTG Mtg. February or March 2013

• Step Dimensions in Dwelling Units– TG Mandate: Review of benefit studies & develop cost impact– TG Status: STG on Archetypes Designs met few times

STG on Incidence and Statistics met with JTG(Oct. 23)

• Climbable Guards– STG Fall Protection Mandate: Review CCR & develop proposed changes– Status: Options still under review


Part 9 Work• Active Approved Tasks

– Stairs, Handrails, Ramps, Guards– Grab Bars in Tubs and Showers – Illustrated Guide– Solar Collectors– Smoke Tightness of Closures– Use and Protection of Foamed Plastic– Airborne Sound Transmission– Roofing, Waterproofing, Dampproofing Standards– Snow Loads– Insulation Concrete Forms– Exterior Insulating Finishing System (EIFS) (ES, HSB, EEB)– Referenced Standards – CSA A82 Series: Masonry Terminology (HSB)– Energy Efficiency in Housing and Small Buildings (HSB, EEB)– Protection above Ranges (Alternative Materials – Clearances)


Part 9 Work

• Inactive Approved Tasks– Basements– Residential Care Facilities– Service Lines under Buildings– Anchorage of Smaller Buildings– Slope Stability– Combustible Penetrations– Properties and Position of Low Permeance Materials– Precipitation Protection – Exposing building face & 10 minute response time– Heat detectors in garages (TG Fire Alarm Systems) – CCR 390 and 423– Protection above Ranges – Alternatives for Asbestos (9.10.22.2.) – SC– Limit Exhaust Capacity for Exhaust-Only Systems – 9.32.3.8 – CCR 495


Part 9 Work Grab Bars in Bathtubs and Showers

• Task Group on Grab Bars in Bathtubs and Showers in Dwelling Units– TG Mandate: Recommend and justify a solution regarding

grab bars in bathtubs and showers in dwelling units– TG Status: First Teleconference October 4, 2012

Work in Progress

• Illustrated Guide Part 9 – NBC 2010– being reviewed and is being prepared for – in-house editing and translation. – publication date is summer 2013.


Part 9 Work Stairs, Ramps Handrails & Guards

• Joint Task Group on Stairs, Ramps Handrails & Guards– Subtask Groups (STGs) with Specific Assignments

• STG on Stairs’ Width and Height• STG on Loads (on handrails and guards)• STG on Fall Protection• STG on Stairs’ Dimensions and Configurations



• Meetings since May 2011– Subtask Groups (STGs)

• Width and Height (4 teleconf’s – 2 Part 9 PCFs)• Loads on Handrails &Guards (3 teleconf’s – 3 Part 9 PCFs)• Fall Protection (16 teleconf’s – 10 Part 9 PCFs)• Dimensions and Configurations (5 teleconf’s + 2 face-to-face – 13

Part 9 PCFs)

– Joint Task Group – 2010 -2012• 1 teleconference meeting and 3 face-to-face meetings



JTG Recommendation• All Ramps - Sentence 9.8.5.2.(1)

– minimum width of 1100 mm (consistent with Part 3) regardless of use, occupancy and location

• Ramps within Dwelling Units - Sentence 9.8.5.2. (2) – No change! Require width of 860mm



JTG Recommendations:

• Use the term tapered treads in curved flight• Keep the term winder to designate specific treads that

converge to a point allowed only inside dwelling units (9.8.4.5.)

• Develop a definition for run, flight and tapered tread

Part 9 uses Part 3 usesCurved Stairs in other than Exit Stairs angled tread curved or spiral stair

Curved Stairs in Exits “angled treads in required exit stairs” "curved stair" and "tapered treads"

Winders Winders designate "treads that

converge to a point allowed only inside dwelling units"

Other Terms "Curved flight" and "curved run" are both used



Dimensions and Configurations

2010Part 9

2010Part 3

Curved Stairs (Tapered Treads)

(9.8.4.3)Public and

Private(3.3.1.16)

Minimum Run

Average Run

150 mm

200 mm

150 mm

200 mm

Traditional Winders 9.8.4.5. 9.8.4.5.

• come to a point• within DU only• one set of winder treads between 2 stair levels • turning less than 90 with a maximum of three treads

Tapered Treads Winders


Part 9 Work Stairs, Ramps Handrails & GuardsDimensions and Configurations

2010Part 9

2010Part 3

JTG Recommendationfor 2015

CCR 602 (1019)Curved Stairs (Angled Treads) 9.8.4.3 3.3.1.16 9.8.4.3. and 3.3.1.16

Minimum Run

Average Run Minimum Run at 300 mm from the narrow end of the tread

150 mm

200 mm

150 mm

200 mm

150 mm

280 mm (Public Stairs)

Comply with Table 9.8.4.2.(Dwelling Units)

Traditional Winders 9.8.4.5. 9.8.4.5. 9.8.4.5• come to a point• within DU only• one set of winder treads between 2 stair levels • turning less than 90 with a maximum of three treads

No Change(HSB Recommendation)



• Stairs Configurations– Public Stairs (Part 9)

• straight flights OR curved flight -Status quo• spiral stairs (under certain conditions)

– Stairs within Dwelling Units• straight- flights,• curved flights, • straight runs with winders• flight with mixed treads • spiral stairs (under certain conditions)


Part 9 Work Stairs, Ramps Handrails & Guards Flight with Mixed Treads within Dwelling Units (New) TG Recommendations• Tapered treads and rectangular treads shall have :

– a consistent run measured 300 mm from the handrail (so that one does not transit from a larger to a smaller tread run)

– a handrail on the inner side of the stair

Except– Where tapered treads are located at the bottom of the flight,

the run of the tapered tread may exceed the run of the rectangular tread.

– as permitted in 9.8.4.5.(Winders)


Part 9 Work Stairs, Ramps Handrails & Guards Flight with Mixed Treads within Dwelling Units (New)

Rules• Transition from rectangular treads to tapered treads allowed• Transition from tapered treads to rectangular treads allowed• Where tapered treads at the bottom of flight, consistent run

not required• Transition larger to smaller treads not allowed


Part 9 Work Stairs, Ramps Handrails & Guards Flight with Mixed Treads within Dwelling Units (New) • Would be allowed Would be allowed

Top

Down

Top

DownMixed Run Flight:- 1 set of rectangular treads- 1 set of tapered treads- 1 change in direction

Consistent run at 300 mm required

300 mm

Consistent run not required


Part 9 Work Stairs, Ramps Handrails & GuardsFlight with Mixed Treads within Dwelling Units (New) • The attached configurations would be allowed

Consistent run not requiredConsistent run not

required

Top

Top



Top

Top

Mixed Run Flight:- 1 set of rectangular treads- 1 set of tapered treads- 1 change in direction

Down

Down

Flight with Mixed Treads within Dwelling Units (New) • Would be allowed

Consistent run at 300 mm requiredConsistent run not

required



Mixed Run Flight:- 1 set of rectangular treads- 2 set of tapered treads

Flight with Mixed Treads within Dwelling Units (New) • Would be allowed

Consistent run at 300 mm requiredConsistent run at

300 mm required

Mixed Run Flight:- 2 set of rectangular treads- 1 set of tapered treads



Fig.3:Floor Space 3.057 m2

Flight with Mixed Treads within Dwelling Units (New) • Would not be allowed

Mixed Run Flight:- 2 set of rectangular treads- 1 set of tapered treads- Non consistent run at 300 mm from handrail


Part 9 Work Stairs, Ramps Handrails & GuardsArticle 9.8.4.5. (Traditional Winders)• Would still be allowed


Part 9 Work Stairs, Ramps Handrails & GuardsSpiral Stairs• Allowed as a means of egress where

they serve not more than 3 persons– 1 bedroom apartment– Small office (27.7 m2)– Mercantile use (11.1 m2)

• Construction parameters to NFPA 101


Part 9 Work Stairs, Ramps Handrails & GuardsFall Protection Issues9.8.8.5.Protection of Open Stringers• Limit to 150 mm the size of open stringers. This is a relaxation from

current interpretation (100 mm)and has no impact on stairs were the guards are installed close to the nosing.

9.8.7.1. Handrails on the narrow side of Winders and tapered treads

• Clarification and this is often the current practice

9.8.7.4. Height of Handrails• NBC 2012 allows an expanded range of installation from 865 to 965 mm • Proposal: 865 to 1070 mm


Part 9 Work Stairs, Ramps Handrails & GuardsFall Protection Issues9.8.7.5.(1) Clearances of Handrails to Rough or Abrasive Surfaces• Require 60 mm instead of 50 mm where handrails are installed on rough

surfaces

9.8.8.1. Required Guards and Exceptions• Harmonize the guard requirement to a single criterion (600 mm) no

impact, simplify regulation

No Change• Protection at Windows• Openings in Guards• Slip Resistance and Contrasting Identification


Part 9 Work Stairs, Ramps Handrails & GuardsIssues Still Under Discussion• Graspability of handrails• Protection of open risers in dwelling units• Continuity of handrails• Height of guards within dwelling units• Design to prevent climbing


Standing Committee Meetings

November 13-14, 2012• Standing Committee on Environmental Separation, MontrealNovember 14-16, 2012• Standing Committee on Housing and small Buildings, TorontoNovember 19-20, 2012• Standing Committee on Energy Efficiency in Buildings, MontrealNovember 21-22, 2012• Standing Committee on Fire Protection, Quebec City


Questions?

www.nationalcodes.nrc.gc.ca

Thank you

canadian code centre presentation - october 2012

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