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26 ways to prevent cracks in brickwork

According to BIA Technical Note 18A, the term “control joint” is used in reference to concrete or concrete masonry construction. Make sure all expansion joint materials extend through the full thickness of the wythe to keep mortar and other debris from clogging the joint and block water from penetra...

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Bibliographic Details
Published in:Building Design & Construction 2021-04
Main Author: Brian E Trimble, PE, James A Tann, and Charles (Chip) Clark, AIA
Format: Article
Language:English
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Summary:According to BIA Technical Note 18A, the term “control joint” is used in reference to concrete or concrete masonry construction. Make sure all expansion joint materials extend through the full thickness of the wythe to keep mortar and other debris from clogging the joint and block water from penetrating the joint as much as possible. 7. Be aware that the positioning and spacing of expansion joints in brickwork will vary from structure to structure, depending on a variety of factors: the amount of expected movement, the size of the expansion joint, the compressibility of the expansion joint materials, restraint conditions, elastic deformation due to loads, shrinkage and creep of mortar, construction tolerances, and wall orientation. The maximum area between movement joints should not exceed 144 sf (13.4 square meters) or a length-to-height or height-to-length ratio of 2½:1.
ISSN:0007-3407