Type III construction is commonly described as which of the following?

Type III construction is commonly described as which of the following?

• A. Noncombustible construction
• B. Ordinary construction
• C. Heavy timber construction
• D. Masonry construction

Answer: (B)

Type III construction is commonly described as ordinary construction. The key idea is that the exterior walls are noncombustible, usually masonry or other noncombustible material, while the interior framing can be combustible, often wood. This mix gives it a middle-ground fire-resistance level—more protection than fully wooden systems, but not as fire-resistive as the fire-rated, fully noncombustible types. Heavy timber is a different category (Type IV), built with large timber members, and while exterior masonry can appear in Type III, “masonry construction” isn’t the standard label for this type.

Type III construction is commonly described as ordinary construction. The key idea is that the exterior walls are noncombustible, usually masonry or other noncombustible material, while the interior framing can be combustible, often wood. This mix gives it a middle-ground fire-resistance level—more protection than fully wooden systems, but not as fire-resistive as the fire-rated, fully noncombustible types. Heavy timber is a different category (Type IV), built with large timber members, and while exterior masonry can appear in Type III, “masonry construction” isn’t the standard label for this type.