The condition often found in type iii construction buildings which is likely to negatively influence fire behavior is void spaces. There are multiple void spaces due to the construction process in type 3 buildings. The space between the floors and attic is combustible in nature where it is difficult to detect fire.
In type 3 construction buildings, the roofs, beams, interior walls and columns, and even the floor is made up wood which is a conductor of heat. This again negatively effects the fire behavior.
Type 3 buildings are mainly made of non-combustible masonry but their roofs and floors are flammable.
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