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9 Cards in this Set
- Front
- Back
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Type 1 Construction |
Fire Resistive Strengths: Resists direct flame inpingement Confines fire well Little collapse potential from effects of fire alone Impervious to water damage Weaknesses: Difficult to breach for access or escape Difficult to ventilate during fire Massive debris following collapse Floors, ceiling, and walls retain heat |
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Type 2 Construction |
Noncombustible Strengths: Almost as resistive to fire as Type 1 Confines fire well Almost as structurally stable as Type 1 Easier to vertically ventilate than Type 1 Weaknesses: Difficult to breach from access or escape Unprotected steel structural components can fail due to heat Roof systems less stable than Type 1 Steel components subject to weakening by fire Steel components subject to weakening by rust and corrosion Massive debris following collapse |
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Type 3 Construction |
Ordinary Strengths: Resists fire spread from the outside Relatively easy to vertically ventilate Weaknesses: Interior structural members vulnerable to fire involvement Fire spread potential through concealed spaces Susceptible to water damage |
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Type 4 Construction |
Heavy Timber Strengths: Resists collapse due to flame impingement of heavy beams Structurally stable Relatively easy to vertically or horizontally ventilate Relatively easy to breach for access or escape Manageable debris following collapse Weaknesses: Susceptible to fire spread from outside Potential for flame spread to other nearby structures Susceptible to rapid interior flame spread Susceptible to water damage |
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Type 5 Construction |
Wood Frame Strengths: Easily breached for access, ventilation or escape Resistant to collapse from earthquakes due to lightweight and flexibility Collapse debris relatively easy to manage Weaknesses: Susceptible to fire spread from outside Susceptible to rapid flame spread inside Susceptible to total collapse due to fire or explosion Susceptible to water damage |
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Balloon Frame |
A type of wood-frame construction in which the studs in exterior walls extend from the basement or foundation to the roof. Allows fire to spread often undetected. |
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Bowstring Truss |
A roof assembly with a curved top chord and a horizontal bottom chord. These assemblies are very strong unless exposed to direct flame when catastrophic failure can occur.
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Butterfly Roof |
A v-shaped roof in which the two sides slope towards a valley in the middle. An unusual type roof that is rarely seen in cold climated where snow load is a factor. |
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Cantilever |
A beam that is unsupported at one or both ends. Typically used to support balconies on apartments and some office buildings. |
