October 28th 2011

IRC - Codes Report

2

Codes Update

• Outline– Code Development Update– Project Updates

• Policy-Related Activities (Executive Committee)

• Part 9 related work – Joint Tasks with Other Committees

– Energy efficiency in Housing and Small Buildings

– Upcoming Meetings – Schedule

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Code Development Update

• Publication Dates– NECB is being published – November 18th , 2011– Publication alignment for 2015 codes under discussion

• First Public Review towards 2015 NBC, NFC, NPC– Right Now – www.nationalcodes.ca – October 24th to December 16– 1 Part 9 Interim change: Reference ASTM Nailing Standard– 1 Part 9 change: Anchorage requirement held back

• Public Review on Energy Delayed– January 9th to February 24th 2012

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Policy–Related Activities

• Currently Active Tasks– New Objective – Water-Use Efficiency (TG Scoping)– Renewal of the Farm Building Code (TG Scoping)– Sprinklers, Stairs, Guards, Fire Performance of Houses – Removal of an Objective

• Activities about to get underway …– Energy Target for the NECB (CCBFC ballot to approve task)– TG on Review of the Code Development System– TG on Harmonization (Provincial-National)– TG on Impact Analysis (Phase 2)

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Policy–Related Activities

• Sprinklers– Request: EC asks SCHSB and SCFP for assistance

to inform policy considerations

– Approach: Joint HSB/FP Task Group • TG Mandate: Review cost/benefit data & asses technical merit• TG Status: SC review and approval of Terms of Reference

• Step Dimensions (7”-11”)– Request: EC asks SCHSB and SCUE for assistance

to inform policy considerations

– Approach: Subtask group of existing Joint Task Group on Stairs• sTG Mandate: Review of benefit studies & Developing cost impact• sTG Status: SC review and approval of Terms of Reference

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Policy–Related Activities

• Climbable Guards– Direction:

• EC will communicate CCBFC concerns to Standing Committees

• EC will clarify that new code change request can be considered

• Fire Performance of Houses– Direction:

• EC will ask SCHSB for assistance (with help from FP) to inform policy considerations

• Assess impact of research findings on current code & objectives

– Approach:• HSB TG with expertise from FP

• Mid-Rise Construction (not Part 9)

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Part 9 Work

• Joint Tasks with Other Committees (ES – Part 5)– EIFS

• Progress: reviewed standards (4 meetings)

• Next meeting: January 19th 2012

• Approach: – reference S716.1, 2 and 3 standards in a separate Subsection in 9.27

– Add rainscreen-EIFS as acceptable option in 9.27.2.2

• Outstanding work: – review 9.27.3 , 9.27.4. and 9.27.5 for conflicts

– cross-references to » 9.25. – vented cavity» 9.10. – foamed plastics » 9.23.13. – lateral bracing

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Part 9 Work

• Joint Tasks with Other Committees (ES – Part 5)– Sound Transmission between Dwelling Units

• Progress: 3 meetings

• Next Meeting: January 2012

• Approach

• Flanking noise will be addressed by – Existing Sound and fire Tables

– additional information in tables

Compliance Path Part 5 Part 9

Performance Statement Assembly Testing Path

Design path

(Comprehensive)

(Simplified) Prescriptive Solutions

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Part 9 Work

• Joint Tasks with Other Committees (ES – Part 5)– Roofing, Waterproofing, Dampproofing Standards

• Progress: Developed code language to replace application standards - SCES rejected

approach

• Next meeting: January 2012

• Approach: – Replace material standards

– Find ASTM/International equivalents for application standards

• Outstanding work: – Identify and review potential standards

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Part 9 Work – Energy Efficiency

• Executive Committee – Guidance – Overall Cost-benefit Calculations:

• Whole house analysis – YES

• Simple Payback – NO

• Value Index – NO

• Incremental Construction ($) & Energy Benefit ($)

– Division C – reporting requirements • Compliance Report required

• Compliance Report can be generated by HOT2000

• “check-list” like approach

– Development of Public Consultation Document

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Part 9 Work – Energy Efficiency

• New subjects or significant revisions– Changes to Application

Building Type

Compliance Options Part 9 -

Prescriptive Part 9 -

Performance NECB

houses,houseswithsecondarysuites, buildingscontainingonlydwellingunitswithcommonspaces≤20%floorarea

X X X

- purelyresidentialbuildings- anybuilding,whereallnon-residentialportions(notF2)haveafloorarea≤300m²

X X

anybuildingwherenon-residentialoccupancieshaveafloorarea>300m²

- buildingscontainingF2occupancies(anysize) X

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Part 9 Work – Energy Efficiency

• New subjects or significant revisions– Changes to attic requirements?

– Site-built windows ?

– HVAC duct alternative !

– Simple Trade-Off Examples !

– Simple Trade Off Limits ?• Opaque-to-Opaque option

– Difficulties to characterize attic spaces (roof shapes, styles)– Limits may have to be introduced (vertical/vertical only, certain minimum

geometries)

• Transparent-to-Transparent– Limit on solar heat gain coefficient – maximum allowable increase of U-value

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Part 9 Work – Energy Efficiency

• Changes to attic requirements– Intent to avoid requiring high heel trusses– Modeling done without high heel trusses– Currently proposed

• Slope not more than 1200mm projection

• Perimeter at least at Wall R-value

– Current Practice• Slopes 5/12 to 7-12 are most common

• 30% - 40% of truss designs already comply

• Mostly affects low slopes

– New Proposal (to be discussed)• Regulate truss minimum heel height?

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Part 9 Work – Energy Efficiency

• Site-built windows– Introducing prescriptive alternative– To be discussed

Construction Max. U Req’d U

For climate zones 4 and 5: Non-metallic frames +triple glazing, 12.7 mm spacer 2.14

1.8double glazing, 1 low-e (e ≤ 0.10), argon, non-metallic spacer 2.02

For climate zones 6 and 7a: Non-metallic frames +triple glazing, 12.7 mm spacer, argon, 1 low-e (e ≤ 0.20) 1.78

1.6triple glazing, 12.7 mm spacer, 2 low-e (e ≤ 0.20) 1.74

For climate zones 7b and 8: Non-metallic frames +triple glazing, 12.7 mm spacer, 2 low-e (e ≤ 0.10) 1.61

1.4triple glazing, 12.7 mm spacer, argon, 2 low-e (e ≤ 0.20) 1.57

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Upcoming Meetings – Schedule

• Standing Committee on Housing and Small Buildings– November 16-18 – Vancouver – Part 9 Energy Efficiency – February 2012 – Ottawa – Non-energy subjects– April/May 2012 – Ottawa – Part 9 Energy Efficiency

• Standing Committee on Energy Efficiency in Buildings– November 9-10 – Ottawa – Part 9 Energy Efficiency

• sTG – Code Consolidation (EEHSB)– March 2012 – Ottawa – Review of Public Review Comments

• Commission on Building and Fire Codes– July 2012 – TBD – Approval of Part 9 Energy Efficiency