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315.4 Perimeter Coverage
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Where a perimeter-type surface skimming system is used as the sole surface skimming system, the system shall extend around not less than 50 percent of the pool or spa perimeter.
Where perimeter surface skimming systems are used, they shall be connected to a circulation system with a system surge capacity of not less than 1 gallon for each square foot (40.7 liters per square meter) of water surface. The capacity of the perimeter overflow system and related piping is permitted to be considered as a portion of the surge capacity.
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315.4 General Compliance, Perimeter Coverage
Where a perimeter-type surface skimming system is used as the sole surface skimming system, the system shall extend around not less than 50 percent ...
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Where a perimeter-type surface skimming system is used as the sole surface skimming system, the system shall extend around not less than 50 percent ...
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