Shrinkage and Temperature Stresses in Masonry
R. E. Copeland
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Various methods, including crack control joints, have been proposed for crack control in concrete masonry walls due to shrinkage and temperature stresses. This paper outlines a theory based on experimental studies and ex-pcricnce for determining the maximum permissible distance between control joints in blank walls containing no "stress raisers." The effect of variables such as type and degree of restraint and properties of the masonry units is dis-cussed. The theory is offered not as a rigorous mathematical treatment of the problem but as an approximate guide for the design engineer and architect.