CAN/CSA-A82.31-M91

1.1 This Standard is intended to describe the minimum requirements for (a) the application and finishing of gypsum board used in wall and ceiling construction (except gypsum board to receive plaster); and (b) the installation of framing to receive the above gypsum board. 1.2 Where a fire resistance rating is required, the installation, including type and spacings of fasteners, shall be in accordance with the applicable fire test report and/or building code regulation or as provided for in Chapter 2 of Fire-Performance Ratings of the Supplement to The National Building Code of Canada. 1.3 Where the requirements in this Standard are more stringent (size or thickness of framing, size and spacing of fasteners, etc) than the fire-rated construction, these requirements shall govern; otherwise, the construction described in the fire test report shall govern.