R4501.6 Engineering Design
Every swimming pool shall be equipped complete with approved mechanical equipment consisting of filter, pump, piping valves and component parts.
Exception: Pools with a supply of fresh water equivalent to the volume of the pool in the specified turnover time will be allowed.
Pool piping shall be designed so the water velocity will not exceed 10 feet per second (3048 mm/s) for pressure piping and 8 feet per second (2438 mm/s) for suction piping, except that the water velocity shall not exceed 8 feet per second (2438 mm/s) in copper tubing. Main suction outlet velocity must comply with ANSI/APSP/ICC 7.
Exception: Jet inlet fittings shall not be deemed subject to this requirement.
All piping materials shall be installed in strict accordance with the manufacturer's installation standards.
Exception: Primer and glue on exposed aboveground piping not required to be colored.