Pool piping shall be sized to permit the rated flows for filtering and cleaning without exceeding the maximum head at which the pump will provide such flows. In general, the water velocity in the pool piping should not exceed ten feet per second. Where the velocity exceeds ten feet per second, summary calculations should be provided to show that rated flows are possible with the pump and piping provided. The recirculating piping and fittings shall meet the following requirements:
(a) The vacuum fitting(s) shall be located in an accessible position(s) below the water line.
(b) A main outlet shall be placed at a deep point in every pool for recirculating and/or emptying the pool.
(c) Pool recirculation piping, passing through the pool structure, shall be copper tubing with a minimum wall thickness of Type "L" brass, virgin plastic or an approved equal.
(d) Filtered water inlet(s) shall be provided in sufficient quantity and shall be properly spaced to provide a maximum circulation of the main body and surface of the pool water.
(e) A recirculating skimming device shall be provided to skim the surface of the pool.
(f) All materials used in a pool recirculating system shall be nontoxic.
(Ord. B-751. Passed 7-9-62.)