Which code reference is mentioned in connection with fire rating for roofing materials?

Which code reference is mentioned in connection with fire rating for roofing materials?

• A. IBC 1505.2
• B. IRC R902.1
• C. IBC 2512.1.2
• D. IRC R703.7.2.1

Answer: (B)

In the residential code, the fire rating of roof assemblies is specified in the International Residential Code. The exact reference that addresses the fire resistance rating for roof assemblies and how it applies to the roofing system is R902.1. This section lays out when a roof assembly needs a fire rating and how that rating is determined and applied to roofing materials and installation. The other references come from different code sections or scopes that address other topics, so they don’t establish the specific fire-rating requirement for residential roofing assemblies in this context.

In the residential code, the fire rating of roof assemblies is specified in the International Residential Code. The exact reference that addresses the fire resistance rating for roof assemblies and how it applies to the roofing system is R902.1. This section lays out when a roof assembly needs a fire rating and how that rating is determined and applied to roofing materials and installation. The other references come from different code sections or scopes that address other topics, so they don’t establish the specific fire-rating requirement for residential roofing assemblies in this context.