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OBC 2006 › Division B

3.1.5.5.

Version 0 — in force 31 December 2006

In force
Verified · covered Verified against the 2006-12-31–2007-04-01 consolidation, whose range covers the query date. How to read this

Provenance

OBC 1997 · continues from 3.1.5.5. — Pro

Base · O. Reg. 350/06 · ext← current

Original — base regulation

O. Reg. 503/09, cl. 13 · ext v1 →

In force 2010-01-01

Next: O. Reg. 503/09, cl. 13 · ext (not in force until 2010-01-01) v1 →

OBC 2012 · continues as 3.1.5.5. — Pro

3.1.5.5. — Combustible Components for Exterior Walls

Comparing versions

Changed text stands out · unchanged is dimmed

v0 base

Earlier · viewing · 2006-12-31

(1) Except for an exposing building face required to conform to Sentence 3.2.3.7.(1) or Sentence 3.2.3.7.(4), an exterior non-loadbearing wall assembly that includes combustible components is permitted to be used in a building required to be of noncombustible construction provided,

(a) the building is,

(i) not more than 3 storeys in building height, or

(ii) not more than 6 storeys in building height if sprinklered,

(b) the interior surfaces of the wall assembly are protected by a thermal barrier conforming to Sentence 3.1.5.11.(3), and

(c) the wall assembly satisfies the criteria of Sentences (2) and (3) when subjected to testing in conformance with CAN/ULC-S134, “Fire Test of Exterior Wall Assemblies”.

(2) Flaming on or in the wall assembly shall not spread more than 5 m above the opening during the test procedure referenced in Sentence (1).

(3) The heat flux during the flame exposure on a wall assembly shall be not more than 35 kW/m2 measured 3.5 m above the opening during the test procedure referenced in Sentence (1).

(4) A wall assembly permitted by Sentence (1) that includes combustible cladding of fire-retardant treated wood shall be tested for fire exposure after the cladding has been subjected to an accelerated weathering test as specified in ASTM D2898, “Accelerated Weathering on Fire-Retardant-Treated Wood for Fire Testing”.

(5) The requirements in this Article do not apply where foamed plastic insulation is used in an exterior wall assembly of a building and the insulation is protected in conformance with Sentences 3.2.3.8.(1) and (2).

v1 O. Reg. 503/09

Later · 2010-01-01

(1) Except for an exposing building face required to conform to Sentence 3.2.3.7.(1) or Sentence 3.2.3.7.(4), an exterior non-loadbearing wall assembly that includes combustible components is permitted to be used in a building required to be of noncombustible construction provided,

(a) the building is,

(i) not more than 3 storeys in building height, or

(ii) not more than 6 storeys in building height if sprinklered,

(b) the interior surfaces of the wall assembly are protected by a thermal barrier conforming to Sentence 3.1.5.12.(3), and

(c) the wall assembly satisfies the criteria of Sentences (2) and (3) when subjected to testing in conformance with CAN/ULC-S134, “Fire Test of Exterior Wall Assemblies”.

(2) Flaming on or in the wall assembly shall not spread more than 5 m above the opening during the test procedure referenced in Sentence (1).

(3) The heat flux during the flame exposure on a wall assembly shall be not more than 35 kW/m2 measured 3.5 m above the opening during the test procedure referenced in Sentence (1).

(4) A wall assembly permitted by Sentence (1) that includes combustible cladding of fire-retardant treated wood shall be tested for fire exposure after the cladding has been subjected to an accelerated weathering test as specified in ASTM D2898, “Accelerated Weathering on Fire-Retardant-Treated Wood for Fire Testing”.

(5) The requirements in this Article do not apply where foamed plastic insulation is used in an exterior wall assembly of a building and the insulation is protected in conformance with Sentences 3.2.3.8.(1) and (2).