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6 Cards in this Set
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What are the 5 Types of Building Construction? NFPA 220 |
Type 1: Fire Resistive Type 2: Non-Combustible Type 3: Ordinary Type 4: Heavy Timber Type 5: Wood Frame |
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What is Type 1: Fire Resistive construction? |
Walls, partitions, columns, floors and roofs are noncombustible. Designed to withstand the effects of fire for a limited time and prevent fire spread. Made of poured concrete and steel. Steel members must have a fire protective coating. example of Fire Resistive - High Rise |
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What is Type 2: Non-combustible construction? |
Walls, partitions, columns, floors and roofs are noncombustible but provide less fire resistance. Does not withstand the effects of fire or fire spread. "Noncombustible" refers to the fuel the building contributes, not its resistance to spread of fire. Typically exposed metal floor and roof system and metal or masonry walls. Least stable in terms of collapse, when exposed to fire. example of Non-combustible - Newer construction, Strip malls, modern taxpayers |
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What is Type 3: Ordinary construction? |
Walls of masonry or other noncombustible walls with a 2 hour fire rating. Floors, roofs and interior partitions are of wood. example of Ordinary - The Old Ballard Fire House |
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What is Type 4: Heavy Timber construction? |
Walls of masonry or other noncombustible walls with a 2 hour fire rating. Interior columns, beams and girders are heavy timber (minimum 8x8). Floors and roofs are heavy planks (3x6 minimum). Extremely heavy fire load yet resistant to ignition and collapse due to mass of structural members. Usually lacks hidden voids. Once ignited, it requires large volumes of water to extinguish. example of Heavy Timber / Mill - Ballard Industrial, Salty Dog |
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What is Type 5: Wood Frame construction? |
Walls, floors, and roofs that are made wholly or in part of wood. Structure contributes significantly to fire load yet is reasonably resistant to collapse. (Exception, lightweight construction) example of Wood Frame - the modern home |
