Modular welded perimeter skimming gutter for swimming pools

A modular bonded perimeter skimming gutter retaining wall for swimming pools, for construction by simple bonding together of a plurality of modular units on-site, disposed about the perimeter of a swimming pool as the retaining wall of the swimming pool, defining a pool-side wall of an open gutter conduit adapted to carry water at a level below a predetermined level of water in the swimming pool, over the top of which wall water may flow from the pool into the gutter, the retaining wall comprising two generally U-shaped channels open along one side and having open interiors defined by side walls extending from a common base, the channels being arranged with the open sides facing one another and bonded together together along the end faces of the side walls to a common divider plate closing off each channel and the interior spaces thereof, thereby forming separated conduits of each channel, one of said conduits being adapted to carry clean water feed to the pool and the other of said conduits being adapted to carry gutter water away from the pool, and a port in at least one of said conduits sufficiently close to a bonded end thereof to afford visual inspection of the integrity of the bond within the conduit at said bonded end.