5.8.1.3.Compliance with Required Ratings

(1) Compliance with the required STC ratings shall be demonstrated through
  (a) measurements carried out in accordance with Sentence 5.8.1.2.(1), or
  (b) the construction of separating assemblies conforming to Table 1 or 2 of MMAH Supplementary Standard SB-3,
      “Fire and Sound Resistance of Building Assemblies” as applicable.

     (2) Compliance with the required ASTC ratings shall be demonstrated through
     (a) measurements or calculations carried out in accordance with Sentence 5.8.1.2.(2), or
     (b) the construction of separating assemblies conforming to Table 1 or 2 of MMAH Supplementary Standard SB-3,
         “Fire and Sound Resistance of Building Assemblies,” as applicable, that have an STC rating not less than 50 in
         conjunction with flanking assemblies constructed in accordance with Article 9.11.1.4.

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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.