CodeChronicle

OBC 2006 Division B

3.1.14.2.

Version 1 — in force 1 January 2010

In force · amended
Verified · covered Verified against the 2010-01-01–2010-03-31 consolidation, whose range covers the query date. How to read this

Provenance

OBC 1997 · continues from 3.1.14.2. — Pro

Base · O. Reg. 350/06 · ext v0 →

O. Reg. 503/09, cl. 24 · ext ← current

In force 2010-01-01

OBC 2012 · continues as 3.1.14.2. — Pro

3.1.14.2. — Metal Roof Deck Assemblies

Comparing versions

Changed text stands out · unchanged is dimmed

v0 base

Earlier · 2006-12-31

(1) Except as permitted by Sentence (2), a metal roof deck assembly shall meet the conditions of acceptance of CAN/ULC-S126-M, “Test for Fire Spread Under Roof-Deck Assemblies”, if,

(a) it supports a combustible material above the deck that could propagate a fire beneath the roof deck assembly, and

(b) the deck is used to comply with the requirements of Sentences 3.2.2.25.(2), 3.2.2.32.(2), 3.2.2.53.(2), 3.2.2.59.(2), 3.2.2.69.(2), and 3.2.2.76.(2) for noncombustible construction.

(2) The requirements of Sentence (1) are waived provided,

(a) the combustible material above the roof deck is protected by not less than 12.7 mm thick gypsum board, mechanically fastened to a supporting assembly if located beneath the roof deck, or by a thermal barrier conforming to one of Clauses 3.1.5.12.(2)(c) to (e) that is located,

(i) on the underside of the combustible material, or

(ii) beneath the roof deck,

(b) the building is sprinklered, or

(c) the roof assembly has a fire-resistance rating not less than 45 min.

v1 O. Reg. 503/09

Later · viewing · 2010-01-01

(1) Except as permitted by Sentence (2), a metal roof deck assembly shall meet the conditions of acceptance of CAN/ULC-S126-M, “Test for Fire Spread Under Roof-Deck Assemblies”, if,

(a) it supports a combustible material above the deck that could propagate a fire beneath the roof deck assembly, and

(b) the deck is used to comply with the requirements of Sentences 3.2.2.25.(2), 3.2.2.32.(2), 3.2.2.53.(2), 3.2.2.59.(2), 3.2.2.70.(2) and 3.2.2.76.(2) for noncombustible construction.

(2) The requirements of Sentence (1) are waived provided,

(a) the combustible material above the roof deck is protected by not less than 12.7 mm thick gypsum board, mechanically fastened to a supporting assembly if located beneath the roof deck, or by a thermal barrier conforming to one of Clauses 3.1.5.12.(2)(c) to (e) that is located,

(i) on the underside of the combustible material, or

(ii) beneath the roof deck,

(b) the building is sprinklered, or

(c) the roof assembly has a fire-resistance rating not less than 45 min.