The Ontario Building Code | Determination of Ratings

3.1.7.1. Determination of Ratings

(1) Except as permitted by Sentence (2) and Article 3.1.7.2., the rating of a material, assembly of materials or a 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, "Fire Endurance Tests of building Construction and Materials".

(2) A material, assembly of materials or a structural member is permitted to be assigned a fire-resistance ratingon the basis of MMAH Supplementary Standard SB-2, "Fire Performance Ratings".