What is the stated main difference between Type I and Type II construction?

What is the stated main difference between Type I and Type II construction?

• A. Type I has insulation and protection; Type II lacks insulation and protection
• B. Both types have equal insulation and protection
• C. Type II has insulation and protection; Type I lacks
• D. There is no difference between Type I and Type II construction

Answer: (A)

The main point here is how fire-resistive each construction type is. Type I is built to be fire-resistive, using protective assemblies that surround and shield structural members—often with insulation or fireproofing materials—to slow heat transfer and maintain structural integrity during a fire. Type II, while still using noncombustible materials, generally doesn’t include the same level of insulation or protective coverings around the structural elements. That’s why the stated difference is that Type I has insulation and protection, whereas Type II lacks it.

The main point here is how fire-resistive each construction type is. Type I is built to be fire-resistive, using protective assemblies that surround and shield structural members—often with insulation or fireproofing materials—to slow heat transfer and maintain structural integrity during a fire. Type II, while still using noncombustible materials, generally doesn’t include the same level of insulation or protective coverings around the structural elements. That’s why the stated difference is that Type I has insulation and protection, whereas Type II lacks it.