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The author's company has been manufacturing glazed brick for more than 50 years. From a review of quality control and independent testing laboratory records, it is evident that this product has consistently met ASTM Specification for Facing Brick (Solid Masonry Units Made from Clay or Shale) (C 216) standards for durability. In early 1981 the author initiated a research study to determine some of the characteristics used by architects and structural engineers in designing the exterior walls of a variety of successful buildings utilizing these glazed brick.
The data gathered demonstrate that glazed brick with durability characteristics such as those reported have been used (1) in exterior building walls having a variety of design criteria, (2) in buildings of differing sizes and end uses, and (3) in severe weather climates. The author goes on to discuss that some wall failures have occurred in buildings other than those reviewed in this study; to comment regarding his observations of some such failures; and to suggest ongoing research aimed at more clearly defining in-service conditions that contribute to wall failures.
clays, masonry, brick, building information
President, Hanley Brick Inc., Summerville, PA