(1)
Except as permitted by Sentence (2), the rating of a material, assembly of materials, or structural member that is required to have a fire-resistance rating shall be determined on the basis of the results of tests conducted in conformance with CAN/ULC-S101, “Standard Method of Fire Endurance Tests of Building Construction and Materials.”
(2)
A material, assembly of materials, or structural member is permitted to be assigned a fire-resistance rating on the basis of MMAH Supplementary Standard SB-2, “Fire Performance Ratings.”