Study of poured-in-place concrete wall assemblies in coastal British Columbia
Description
abstract: Rainscreen wall and window assemblies are now being used in coastal British Columbia
because they provide improved water penetration control properties and acceptable
long-term performance. A recent trend has seen builders and the design community
increasingly utilize lower cost poured-in-place concrete wall assemblies, without
rainscreen, in combination with rainscreen windows to provide acceptable long-term
envelope performance. Canada Mortgage and Housing Corporation (CMHC) and Homeowner
Protection Office (HPO) commissioned a study to analyze and document potential
performance questions associated with poured-in-place concrete wass assemblies, as well
as develop a guideline for appropriate design and construction practices. The primary
focus of the study is on the design and construction of above-grade concrete walls.
Issues relating to interfaces with horizontal concrete elements such as floor and roof
slabs, and projecting fins are also discussed.
