The intended size of a mortar joint weep hole is ________.

The intended size of a mortar joint weep hole is 3/16 inch, which allows for adequate drainage and prevents water buildup behind masonry walls. Weep holes are essential for ensuring that moisture can escape from the wall assembly, thereby reducing the risk of damage caused by trapped water, such as mold growth, efflorescence, or structural deterioration. A weep hole that is too small could become clogged, failing to perform its intended function, while one that is too large could compromise the structural integrity of the mortar joint or the overall aesthetic of the masonry work. Therefore, a size of 3/16 inch is a balanced choice that effectively facilitates drainage while maintaining the integrity of the installation.