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8 Cards in this Set

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  • Back
Roofs
not designed as strong as floors, three primary designs pitched, curved and flat
Pitched
Sloped/ inclined
can be gable, hip, mansard, gambrel or lean-to
supported by rafters or trusses, require roof covering
Curved
Used for large buildings, supported by bowstring trussed or arches
Flat
Lightweight use wood I beams and trusses open web steel trusses. Most coverings highly combustible ventilation may be cutting through layers of roofing may have lots of appliances on top
What is a Truss?
triangular, creates strong rigid structure. Wood or steel.
THREE TYPES- Parellel chrord( flat)
pitched chord (pitched), bowstring (curved)
Walls
1.Load bearing
2.Nonbearing
3.Specialized
1. structual support. support dead and live load, damaged wall can collapse
2. support only their weight can be breached or removed without ruining strucute integrity
Specialized walls
(PFPEC)
party walls- 2 properties
fire walls- limit fire spread, extend from foundation through roof
Fire partitions- extend from floor to next floor
fire enclosures- fire rated, vertical openings
Curtain walls- nonbearing attatch to outside
NFPA 80
Constructed to prevent spead of flame, heat and smoke Fire doors and windows
(labeled A-E)