Abstract: A water drainage system and water collector pan for use in unit masonry block walls includes a plurality of water collection pans which may be quickly placed on the top surface of the course of masonry block units over the length of a selected block wall course for collecting the water drained through the interior cavities of the upper courses and directing the water to the exterior of the wall. The collector pans includes a substantially planar collector surface, which, when installed on the block, extends from the front to the rear edges of the block, and generally vertical ridges surrounding the front, rear and side edges of the collector portion and extending to a height slightly less than the height of the bed joint between the blocks, and a weep spout extending outward from the collector surface over the portion of the block to be covered by the bed joint to provide an exit for the collected water from the interior of the wall.

Abstract: A drainage system includes a plurality of water collection pans which may be quickly inserted in the interior cavities of masonry block units over the length of a selected block wall course for collecting the water drained through the interior cavities of the upper courses and directing water to the exterior of the wall. In one embodiment, the collection pans (utilized for units such as bond beam, lintel, or knock-out blocks) includes a collector portion for positioning in the interior cavity of the block and extending across substantially the entire length of the block, the front and rear edges of the collector portion each including a flange extending generally horizontally to contact the top surface of the block, and a drainage channel extending outward from the collector portion past the endwall of the block into the head joint between the block and an adjacent block. Another embodiment of the collection pan designed for use with conventional C.M.U.