CSA - A165 SERIES-94
Standards on Concrete Masonry Units
|Publication Date:||1 December 1994|
This is the third edition of the A165 Series, entitled CSA Standards on Concrete Masonry Units. This edition supersedes previous editions published in 1985 and 1977. It is written in SI (metric) units.
This Series consists of three Standards.
CSA Standard A165.1 classifies units by their physical properties denoted by facets. Each physical property requires a choice to complete the specification. The physical properties are based on performance rather than specific material combinations or manufacturing procedures. Compressive strengths of units, based on net area, parallel those specified in CSA Standard CAN3-S304-M84, Masonry Design for Buildings. The nonmandatory Appendices provide explanations and details of the properties of concrete masonry units. CSA Standard Al 65.2 covers two types of concrete bricks and their physical properties including unit performance, compressive strength, water absorption, moisture content, and dimensional requirements.
CSA Standard A165.3 specifies the properties of masonry units prefaced during manufacturing. Since various raw materials may be used for the facings, the requirements are based on the performance of the finished unit. Essential properties su,ch as dimensions, appearance, chemical, and physical are specified. The base unit for the applied facing is governed by the preceding Standards.
This Series of Standards was prepared by the Technical Committee on Concrete Masonry Units under the jurisdiction of the Standards Steering Committee on Masonry and was formally approved by these Committees.
(1) Use of the singular does not exclude the plural (and vice versa) when the sense allows.
(2) Although the intended primary application of this Series is stated in its Scope, it is important to note that it remains the responsibility of the users of the Series to judge its suitability for their particular purpose.
(3) This publication was developed by consensus, which is defined by the CSA Regulations Governing Standardization as "substantial agreement reached by concerned interests. Consensus includes an attempt to remove all objections and implies much more than the concept of a simple majority, but not necessarily unanimity. " It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of the publication.
(4) CSA Standards are subject to periodic review, and suggestions for their improvement will be referred to the appropriate committee.
(5) All enquiries regarding this Series, including requests for interpretation, should be addressed to Canadian Standards Association, Standards Development, 178 Rexdale Boulevard, Rexdale, Ontario M9W 1R3.
Requests for interpretation should
(a) define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;
(b) provide an explanation of circumstances surrounding the actual field condition; and
(c) be phrased where possible to permit a specific "yes" or "no" answer. Interpretations are published in CSA's periodical Info Update. For subscription details, write to CSA Sales Promotion, Info Update, at the address given above.