Type III, ordinary construction interiors are usually constructed from which type of materials?

Type III, ordinary construction interiors are usually constructed from which type of materials?

• A. Noncombustible plaster
• B. Steel studs
• C. Combustible wood component
• D. Concrete masonry units

Answer: (C)

In Type III ordinary construction, exterior walls are noncombustible, but the interior framing and many interior components are allowed to be combustible. This means the inside is typically built with wood framing, such as studs and joists, which are cheaper and easier to construct while still meeting fire safety requirements overall. Noncombustible plaster and concrete masonry units describe interior materials that aren’t as representative of the usual interior practice for this type, and while steel studs are possible, they’re not the most common choice emphasized for Type III interiors. The hallmark is the interior use of combustible wood components.

In Type III ordinary construction, exterior walls are noncombustible, but the interior framing and many interior components are allowed to be combustible. This means the inside is typically built with wood framing, such as studs and joists, which are cheaper and easier to construct while still meeting fire safety requirements overall. Noncombustible plaster and concrete masonry units describe interior materials that aren’t as representative of the usual interior practice for this type, and while steel studs are possible, they’re not the most common choice emphasized for Type III interiors. The hallmark is the interior use of combustible wood components.