What type of construction has less stringent fire-resistive requirements?

Type II construction is characterized by non-combustible materials, but it does not have the same stringent fire-resistive requirements as Type I construction. Type I construction usually involves reinforced concrete and other materials with high fire-resistance ratings, designed for high-rise buildings or critical structures. In contrast, Type II construction may utilize steel, which, although non-combustible, can lose its structural integrity when exposed to high temperatures for extended periods.

Type III construction involves both combustible and non-combustible materials, typically seen in residential buildings and lower-rise structures, and has requirements that can vary significantly based on the local building codes and occupancy types. Type IV construction, also known as heavy timber construction, relies on massive wood components that are designed to be fire-resistant but still count as combustible materials.

In this context, Type II construction serves as a middle ground, where it is inherently safer than combustibles used in Type III and IV but does not adhere to the rigorous standards of fire resistance found in Type I structures.