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R4101.3 Mechanical requirements. Unless otherwise speci- fied in this code, all piping, equipment and materials used in the plumbing system of swimming pools that are built in place shall conform to the Florida Building Code, Plumbing. R4101.4 Approvals. R4101.4.1 Compliance. All materials, plpmg, valves, equipment or appliances entering into the construction of swimming pools or portions thereof shall be of a type com- plying with this code or of a type recommended and ap- proved by a nationally recognized testing agency or conforming to other recognized standards acceptable to the administrative authority. R4101.4.2 Items not covered. For any items not specifi- cally covered in these requirements, the administrative au- thority is hereby authorized to require that all equipment, materials, methods of construction and design features shall be proven to function adequately, effectively and without excessive maintenance and operational difficulties. R4101.4.3 Applicant responsibility. It shall be the respon- sibility of the applicant to provide such data, tests or other adequate proof that the device, material or product will sat- isfactorily perform the function for which it is intended, be- fore such item shall be approved or accepted for tests. R4101.5 Alternate materials and methods of construction. R4101.5.1Approval and authorization. The provisions of this code are not intended to prevent the use of any alternate material, method of construction, appliance or equipment, provided any such alternate has been first approved and its use authorized by the administrative authority. R4101.5.2 Required tests. When there is insufficient evi- dence to substantiate claims for alternates, the administra- tive authority may require tests, as proof of compliance, to be made by an approved agency at the expense of the appli- cant. R4101.6 Engineering design. R4101.6.1 Conformance standard. Design, construction and workmanship shall be in conformity with the require- ments of ANSIINSPI 3; ANSIINSPI4; ANSIINSPI 5; and ANSIINSPI 6. -I R4101.6.2 Required equipment. 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 offresh water equivalent to the volume of the pool in the specified turnover time will be allowed. R4101.6.3 Water velocity. 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 mmls) for suction piping, except that the water velocity shall not exceed 8 feet per second (2438 mmls) in copper tubing. Exception: Jet inlet fittings shall not be deemed subject to this requirement. FLORIDA BUILDING CODE - RESIDENTIAL SWIMMING POOLS R4101.6.4 Piping to heater. Water flow through the heater, any bypass plumbing installed, any back-siphoning protec- tion, and the use of heat sinks shall be done in accordance with the manufacturer's recommendations. R4101.6.5 Piping installation. All piping materials shall be installed in strict accordance with the manufacturer's in- stallation standards. Exception: Primer and glue on exposed aboveground piping not required to be colored. R4101.6.6 Entrapment protection for suction inlets. R4101.6.6.1 Location. Suction inlets shall be provided and arranged to produce circulation throughout the pool or spa. R4101.6.6.2 Testing and certification. All pool and spa suction inlets shall be provided with a cover that has been tested and accepted by a recognized testing facility and comply with ANSI/ASME A1l2.19.8M, Suction Fit- tings for Use in Swimming Pools, Spas, Hot Tubs, and Whirlpool Bathtub Appliances. Exceptions: 1. Surface skimmers. 2. Grate or grates having a minimum area of 144 square inches (.09 mm2) or greater. R4101.6.6.3 Entrapment avoidance. All pools and spas shall have a backup system which shall provide vac- uum protection should grate covers become missing or inoperative with respect to their approved use, Vacuum protection devices shall consist of one of the following: 1. Approved safety vacuum release system (SVRS). 2. Approved vent piping. 3. Other approved devices or means. R4101.6.6.4 Suction inlets per pump. A minimum of two suction inlets shall be provided for each pump in the suction inlet system, separated by a minimum of 3 feet (914 mm) or located on two different planes; i.e., one on the bottom and one on the vertical wall, or one each on two separate vertical walls. These suction inlets shall be plumbed such that water is drawn through them simulta- neously through a common line to the pump. When a skimmer is used in conjunction with a single main outlet to meet the requirements of this section, the common suction line must be in compliance with Section R4101.6.6.3 such that a vacuum cannot be drawn on any single main outlet or skimmer. R4101.6.6.5 Cleaner fittings. Where provided, the vac- uum or pressure cleaner fitting(s) shall be located in an accessible position(s) at least 6 inches (152 mm) and not greater than 12 inches (305 mm) below the minimum op- erating water level or as an attachment to the skimmer( s). All cleaner suction inlets shall be protected by an ap- proved, permanently installed, self-closing flapper as- sembly. R4101.7 Pumps. 41.3