In Type III construction, exterior walls and interior structural members may include which combination?

In Type III construction, exterior walls and interior structural members may include which combination?

• A. Noncombustible exterior and interior wood elements
• B. All wood construction
• C. Steel and glass only
• D. Concrete-only systems

Answer: (A)

Type III construction uses noncombustible exterior walls to form the building envelope, while interior structural members may be wood or other materials. This setup balances exterior fire resistance with potentially combustible interior construction, which is typical of ordinary construction. The exterior is protected by noncombustible walls, but interior wood elements are allowed, unlike all-wood construction (Type V) or configurations that rely on steel/glass only or concrete-only systems.

Type III construction uses noncombustible exterior walls to form the building envelope, while interior structural members may be wood or other materials. This setup balances exterior fire resistance with potentially combustible interior construction, which is typical of ordinary construction. The exterior is protected by noncombustible walls, but interior wood elements are allowed, unlike all-wood construction (Type V) or configurations that rely on steel/glass only or concrete-only systems.