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Building construction for firefighters in Nigeria

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Understanding Building Construction Types What truck crews should know about the differences between the types of building construction & how to best ventilate fires in each The walls and roofs of Type 5 structures are made of combustible materials—most commonly wood. Both UL and NIST studies have found that Type 5 lightweight construction will fail within minutes of direct fire impingement. When confronted with a Type 5 structure, firefighters should sound the walls prior going to the rooftop. And whether operating on tile or asphalt rooftops, alternatives to rooftop ventilation should be considered if there is heavy attic involvement. Photo Tina Gianos Type 3 buildings can be of either new or old construction, and they have non-combustible walls and a wood roof. If operating on one of these buildings, firefighters should be suspect of conventionally framed materials that may be weathered, built-up roofs or roof-on-top-of-roof systems. If it’s determined that the roof is tenable, a ladder company should be able to effectively use chainsaws to ventilate the building and make the appropriate cuts based on the type of roof system. Photo Steven Frank

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The walls and roofs of Type 5 structures are made of combustible materials—most commonly wood. Both UL and NIST studies have found that Type 5 lightweight construction will fail within minutes of direct fire impingement. When confronted with a Type 5 structure, firefighters should sound the walls prior going to the rooftop. And whether operating on tile or asphalt rooftops, alternatives to rooftop ventilation should be considered if there is heavy attic involvement. Photo Tina Gianos Type 3 buildings can be of either new or old construction, and they have non-combustible walls and a wood roof. If operating on one of these buildings, firefighters should be suspect of conventionally framed materials that may be weathered, built-up roofs or roof-on-top-of-roof systems. If it’s determined that the roof is tenable, a ladder company should be able to effectively use chainsaws to ventilate the building and make the appropriate cuts based on the type of roof system.

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