Describe the five categories of building constructions as classified by the IBC based on the types of materials used and their degree of combustibility.

Question

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Answer 1

The IBC classifies building construction according to five categories based on the types of materials used and their degree of combustibility. Type I and II construction are inherently non-combustible and utilize materials such as concrete and steel. Type III construction utilizes exterior building materials that are non-combustible with structural (load bearing) materials that may be of varying degrees of combustibility. Type IV construction defines exterior walls that are of noncombustible materials with interior building elements of solid or laminated wood without concealed spaces. This type is often used to designate heavy timber buildings. Type V is that type of construction in which the structural elements, exterior walls and interior walls, are of any material. Most wood frame buildings are designated as Type V construction.