Technical Booklet E Fire Safety·Page 108·Diagram 4.2 (a)
Junction of compartment wall and roof - General requirement
Compartment walls must meet roof compartmentation requirements using AA, AB or AC roof covering with fire-stopping material of limited combustibility extending 1.5 m on each side of the junction.
AA, AB or AC roof covering
1.5 m 1.5 m
fire substrate/deck
stopping a material of limited combustibility
(a) Any building
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