Results of Fire Resistance Tests on Small-Scale Insulated and Non-Insulated Gypsum Board Protected Wall Assemblies

Abstract

When the CSA standards for &dquo;Gypsum Board Building Materials and Products,&dquo; CAN/CSA-A82.27 was revised in 1991, the mass per unit area requirement for gypsum board products was removed. About the same time, changes to the 1990 edition of the National Building Code of Canada increased the sound transmission ratings between dwellings. Concerns regarding the impact of these changes on the fire resistance of insulated and non-insulated gypsum board protected wall assemblies prompted this joint research project between the Institute for Research in Construction at the National Research Council. Canada Mortgage and Housing Corporation and seven industry partners.