CodeChronicle

OBC 2006 Division B

3.1.11.5.

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 3.1.11.5. — Pro

Base · O. Reg. 350/06 · ext← current

Original — base regulation

OBC 2012 · continues as 3.1.11.5. — Pro

3.1.11.5. — Fire Stopping of Horizontal Concealed Spaces

(1) Except for a crawl space conforming to Sentence 3.1.11.6.(1), a horizontal concealed space within a floor assembly or roof assembly of combustible construction, in which sprinklers are not installed, shall be separated by construction conforming to Article 3.1.11.7. into compartments not more than,

(a) 600 m2 in area with no dimension more than 60 m if the exposed construction materials within the space have a flame-spread rating not more than 25, and

(b) 300 m2 in area with no dimension more than 20 m if the exposed construction materials within the space have a flame-spread rating more than 25.

(2) A concealed space in an exterior cornice, a mansard style roof, a balcony or a canopy in which exposed construction materials within the space have a flame-spread rating more than 25, shall be separated by construction conforming to Article 3.1.11.7.,

(a) at locations where the concealed space extends across the ends of required vertical fire separations, and

(b) so that the maximum dimension in the concealed space is not more than 20 m.

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