Which type of construction requires structural components to be made of non-combustible or limited combustible materials?

Type I construction requires structural components to be made of non-combustible or limited combustible materials. This classification is designed to ensure that buildings have a high level of fire resistance, making them safer in the event of a fire. Type I construction typically includes reinforced concrete and certain types of steel, which do not ignite or contribute to fire spread, significantly extending the time it takes for a structure to fail under extreme heat.

Buildings classified as Type I are often used for high-rise structures, hotels, and other buildings where safety is a paramount concern. The use of non-combustible materials aligns with fire safety codes and regulations aimed at protecting occupants and reducing the risk of a fire spreading beyond its origin.

In contrast, other construction types such as Type II, Type III, and Type IV allow for the use of combustible materials in structural components to varying degrees, which can increase fire risks and affect the overall safety and fire resistance of the buildings. This distinction highlights the importance of material selection in building design, especially in fire-prone areas.