CSA A165 SERIES-14 (R2019) PDF Download

The CSA A165 Series-14 (R2019) standard is a set of standards that provide specifications and guidelines for the design and manufacture of concrete masonry units. The standard consists of three parts: CSA A165.1, which covers concrete block masonry units; CSA A165.2, which covers concrete brick masonry units; and CSA A165.3, which covers prefaced concrete masonry units.

CSA A165.1 classifies concrete block masonry units based on four physical properties: solid content, specified compressive strength, concrete type, and maximum moisture content. The standard provides identification codes to specify the performance of each unit in terms of these properties. The specified compressive strengths of the units align with the design requirements in CSA S304, Design of Masonry Structures.

CSA A165.2 covers both hollow and solid concrete brick units, which are classified based on their physical properties and the extent of coring and frogging. Solid units are suitable for loadbearing and nonloadbearing applications, while hollow units are limited to nonloadbearing applications. The standard also specifies the grades of units for different exposure conditions.

CSA A165.3 focuses on prefaced concrete masonry units, which have integral facings on one or two sides. The standard provides requirements for resistance to aging, thermal shock, and freeze-thaw cycling, in addition to referencing ASTM C744, Standard Specification for Prefaced Concrete and Calcium Silicate Masonry Units.

The latest edition of the CSA A165 Series incorporates changes such as the inclusion of Portland-limestone cements and blended hydraulic cements as acceptable materials, using normalized web area for measuring concrete masonry units, and providing clarifying notes on various aspects of the units' appearance and production.