In Type II construction, structural members are described as which of the following?

In Type II construction, structural members are described as which of the following?

• A. Wood
• B. Unprotected noncombustible or limited combustible materials
• C. Steel
• D. Fire-resistive

Answer: (B)

In Type II construction the structural framework is built from noncombustible materials. The description “unprotected noncombustible or limited combustible materials” captures the idea that the main structural members are noncombustible (such as steel, concrete, or masonry) and may include some limited use of combustibles only within code allowances. This type is focused on reducing the fuel load and keeping the steel or concrete frame stable during a fire. Wood is not used for the structural frame in Type II because it is combustible. Fire-resistive describes assemblies and protections more typical of other construction types that rely on rated fire resistance, not the basic noncombustible framing of Type II. While steel is a noncombustible material, the best description for Type II emphasizes noncombustible or limited combustible structural members, rather than singling out steel or fire-resistive concepts.

In Type II construction the structural framework is built from noncombustible materials. The description “unprotected noncombustible or limited combustible materials” captures the idea that the main structural members are noncombustible (such as steel, concrete, or masonry) and may include some limited use of combustibles only within code allowances. This type is focused on reducing the fuel load and keeping the steel or concrete frame stable during a fire.

Wood is not used for the structural frame in Type II because it is combustible. Fire-resistive describes assemblies and protections more typical of other construction types that rely on rated fire resistance, not the basic noncombustible framing of Type II. While steel is a noncombustible material, the best description for Type II emphasizes noncombustible or limited combustible structural members, rather than singling out steel or fire-resistive concepts.