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8 Cards in this Set
- Front
- Back
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Roofs
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not designed as strong as floors, three primary designs pitched, curved and flat
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Pitched
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Sloped/ inclined
can be gable, hip, mansard, gambrel or lean-to supported by rafters or trusses, require roof covering |
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Curved
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Used for large buildings, supported by bowstring trussed or arches
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Flat
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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
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What is a Truss?
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triangular, creates strong rigid structure. Wood or steel.
THREE TYPES- Parellel chrord( flat) pitched chord (pitched), bowstring (curved) |
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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 |
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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 |
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NFPA 80
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Constructed to prevent spead of flame, heat and smoke Fire doors and windows
(labeled A-E) |
