Which construction type is Ordinary construction with masonry or noncombustible exterior walls?

Which construction type is Ordinary construction with masonry or noncombustible exterior walls?

• A. Type 3 Construction
• B. Type 4 Construction
• C. Type 2 Construction
• D. Type 1 Construction

Answer: (A)

Understanding construction type definitions starts with how exterior walls are built. Ordinary construction is defined by exterior walls that are masonry or other noncombustible materials, while the interior framing can be wood or other materials. That combination—noncombustible exterior walls with potentially combustible interior framing—fits Type III construction, which is why it’s commonly called Ordinary Construction. Recognizing the other types helps clarify why this is the right choice: Type I is a fully fire-resistive, noncombustible construction with special rated assemblies; Type II uses noncombustible exterior and interior construction with stricter fire resistance in assemblies; Type IV involves heavy timber with large dimension timbers; Type V is all combustible, typically wood frame. So the description given aligns with Type III.

Understanding construction type definitions starts with how exterior walls are built. Ordinary construction is defined by exterior walls that are masonry or other noncombustible materials, while the interior framing can be wood or other materials. That combination—noncombustible exterior walls with potentially combustible interior framing—fits Type III construction, which is why it’s commonly called Ordinary Construction.

Recognizing the other types helps clarify why this is the right choice: Type I is a fully fire-resistive, noncombustible construction with special rated assemblies; Type II uses noncombustible exterior and interior construction with stricter fire resistance in assemblies; Type IV involves heavy timber with large dimension timbers; Type V is all combustible, typically wood frame. So the description given aligns with Type III.