Which construction type is similar to Type 1 but with lower fire resistance?

• A. Type 2
• B. Type 3
• C. Type 4
• D. Type 5

Answer: (A)

Understanding how construction types relate to fire resistance helps here. Type I is the most fire-resistant, using highly protective assemblies and often protected structural members. If a construction type is described as similar in approach to Type I but with lower fire resistance, the match is Type II. Type II buildings use noncombustible materials throughout, but the fire-resistance ratings for walls, floors, and structural elements are generally lower than those required for Type I. This makes Type II the closest fit to Type I in material intent while offering reduced fire resistance. Other types shift characteristics: Type III has noncombustible exterior with combustible interior framing; Type IV features heavy timber with different fire dynamics; Type V uses wood framing throughout and is less fire-resistant overall.