Chapter 11 Flashcards
________ function as the primary sheltering element for the interior of a building.
Roofs
The combustibility of _______________ was one of the first fire hazards addressed in the fire regulations adopted in colonial America.
Thatched Roofs
The roofs of building can be classified into three styles:
Flat, pitched and curved
Low slope roofs have a slope of up to:
3/12
Medium to high slope roofs have slopes of:
4/12 to 12/12
Some structures, including churches and mansions, have roofs with slopes of:
18/12 or greater
Curves roofs are most frequently supported by _______ and _________.
Arches and Bowstring trusses
A ________ is frequently provided in buildings with pitched roofs to increase the available living space in an attic.
Dormer
Fireproofing can be omitted from roof supports when the roof is located more than ______ above the floor in an assembly occupancy.
20 feet
What kind of trusses are the most common types used for pitched roofs?
Fink and Pratt trusses
The _____________ is designed to reduce the diffusion of interior moisture into the insulation layer.
Vapor barrier
Modern asphalt shingles are ___________ based.
Fiberglass
Asphalt shingles are available in several sizes, but the most common size is:
12x36 inches
Class ___ roof coverings are effective against a severe fire exposure.
A
Class ___ roof coverings are effective against a moderate fire exposure.
B
Class ___ roof coverings are effective against a light fire exposure.
C
