This Part of BS 952 was prepared by Subcommittee B/52011. It has been used for many years as a valuable source of background and contractual information by architects, specifiers and other glass users.
The first edition of this British Standard was published in 1941 and it has since been revised in 1953, 1964 and 1978, principally to take account of product developments. This present revision, which has been prepared under the direction of the Sector Board for Building and Civil Engineering, supersedes the 1978 edition, which is withdrawn. It brings up to date the information on glass types, thicknesses, mass/unit area and normally available maximum sizes. New sections have been added covering coated glass, borosilicate glass and glass ceramics to reflect the increasing use of these products.
Work is currently in progress within CEN/TC 129, Glass in building, to produce European Standards for the various glass types. The first product standards, dealing with basic soda lime-silicate glasses CBS EN 572 : Parts 1 to 7), have recently been published. Further standards covering all of the major processed glass products and glass compositions will be published as European Standards over the next few years and adopted as British Standards, thus augmenting the information within this standard.
This Part of BS 952 classifies glass for use in building into three glass compositions: the commonly used soda lime-silicate glass, borosilicate glass and glass ceramics. Terms and definitions, together with details of nominal thickness, thickness tolerance, mass/unit area and the normally available maximum sizes are given.
