Firefighting Building Construction Roof Types

Types of building construction based on the combustibility and the fire resistance rating of a building s structural elements.

Firefighting building construction roof types.

Fire walls nonbearing exterior walls nonbearing interior partitions fire barrier walls shaft enclosures and openings in walls partitions floors and roofs are not related to the types of building construction and are regulated by other standards and codes. All buildings shall be classified in one of the five construction types which are defined in sections 602 2 through 602 5. Floor ceiling roof type v b unprotected wood frame examples of type v n construction are single family homes and garages. With fire resistive construction we see several factors that have the ability to assist firefighters.

Now coming into view in regard to building construction is green construction using renewable materials within and on the structure. They often have exposed wood so there is no fire resistance note exceptions in the building code for fire resistance ratings of exterior walls and opening protection. To classify for a specific construction type the building elements must have a fire resistance rating not less than that specified in table 601 and table 602. There are five different building construction types each with fire resistance ratings the duration for which a passive fire protection system can withstand a standard fire resistance test that apply to the structural frame bearing and nonbearing walls floor and roof.

To identify if a building is of an older style firefighters should look for clues such as collar ties king s rows and arched lintels. A series of building photos representing typical roof construction types along with some key construction components will challenge your firefighters to name the type and to discuss the hazards. The most common types of roof systems in a commercial setting of type 3 construction include parallel cord truss and panelized roof systems. All can be faced by those in the trenches at some time or another.

Buildings feature different types of external and internal construction and it is often the internal structure of a building that most determines how a conflagration should be contained. Type i fire resistive. Photo 7 shows a rubber membrane roof being installed on a noncombustible type ii building.