circulation components and related equipment

shall be capable of fulfilling the design, installation, and intended use requirements in this standard.

4.2 The selection of all materials and manufacturing processes for components and accessories to be used for aboveground/onground residential pools shall be such that all parts with external surfaces and edges that may come in contact with the user are assembled, arranged, and/or finished (deburred, polished, etc.) so that they will not constitute a cutting, pinning, puncturing, or abrasion hazard.

4.3 All paints and finishes shall comply with the U.S. Code of Federal Regulations, Title 16 CFR Part 1303.1 et. seq (Ban of lead-containing paint and certain consumer products bearing lead-containing paint). 5 Dimensional Design 5.1 Perimeter shape. No limits are specified for the shape of pools, except that consideration shall be given to shape from the standpoint of the safety of the occupants and of the circulation of the swimming pool water to ensure sanitation. 5.1.1 There shall be manufacturing tolerances allowed on dimensional designs. Unless otherwise specified, the overall length, width, and depth shall be limited to a tolerance of ±2 in. (±51 mm). 5.2 Floor slopes. Floor slopes shall be uniform and comply with 5.2.1 through 5.2.4. 5.2.1 The slope of the floor from the shallow wall towards the deep area shall not exceed 1 ft in 7 ft (1:7, 305 mm: 2134 mm) to the point of the first slope change. 5.2.2 The slope of the floor from the point of the first slope change towards the deepest point shall not exceed 1 ft in 3 ft (1:3), (305 mm: 914 mm). 5.2.3 The slope adjacent to the shallow area shall have a maximum slope of 1 ft in 3 ft (1:3, 305 mm: 914 mm) and the slope adjacent to the side walls shall have a maximum slope of 1 ft in 1 ft (1:1, 305 mm: 305 mm). 5.2.4 The point of the first slope change shall be defined as the point at which the shallow area slope exceeds 1 ft in 7 ft (1:7, 305 mm: 2134 mm) and be at least 6 ft (1829 mm) from the shallow end wall of the pool. 5.3 Pools designated Type-O with a manufactured dimensionallyspecified contoured deep area and a water depth that exceeds 60 in. (1524 mm) shall be for swimming and wading only. 6 Pool and Component Design 6.1 The pool manufacturer shall be responsible for the following: 6.1.1 The structural design and materials used shall be in accordance with accepted structural engineering practices.

6.1.2 All primary structural members shall have a minimum factor of safety of 1.70 (yield strength) and, when used, aluminum structures shall have a minimum factor of safety of 1.85 (yield strength). The factor of safety shall be confirmed by the manufacturer, the ILAC approved lab, or professional engineer (PE). 6.1.3 In climates subject to freezing temperatures, the pool shell shall be designed and constructed to facilitate protection from damage due to freezing. 6.1.4 The pool shall be capable of being disassembled or stored and reassembled to its original integrity. 6.1.5 Where wall sections or wall ends are joined together, their joints shall be capable of withstanding the maximum stress applied to the wall. The means of closure shall be described in easy-tounderstand diagrams and/or language in the assembly instructions. 6.2 Component manufacturers shall be responsible for the following: 6.2.1 Component manufacturers shall ensure that, in climates subject to freezing temperatures, water containment devices and appurtenances, piping, hoses, filter system, pump and motor, and other components shall be designed and constructed to facilitate protection from damage due to freezing. 6.3 The aboveground/onground residential pool vinyl liner manufacturer shall be responsible for ensuring that the vinyl liner shall conform to 6.3.1 through 6.3.5. 6.3.1 Liners shall be sealed to produce a membrane to contain the water in a watertight envelope. 6.3.2 The manufacturer’s name and the liner identification number shall be affixed to the liner. 6.3.3 Materials used to fabricate standard-grade vinyl liners shall not physically crack when tested at 0 °F ±2° (–18 °C ±1°) per the most recent edition of ASTM D1790, Test method for brittleness temperature of plastic film by impact. 6.3.4 Materials used to fabricate winterized vinyl liners shall not physically crack when tested at –20 °F ±2° (–29 °C ±1°) per the most recent edition of ASTM D-1790, Test method for brittleness temperature of plastic film by impact. 6.3.5 The liner thickness shall measure ±5 percent of the stated thickness. Liner material shall be measured in accordance with the most recent edition of ASTM Test D-1593, Non-rigid vinyl chloride plastic sheeting. 7 Instructions and Responsibilities 7.1 Responsibilities of pool/component manufacturers. In the written instructions and instruction manuals, the pool manufacturer and/or component manufacturer shall be responsible for the following Copyright © 2022 by the Pool and Hot Tub Alliance. All rights reserved. information covered in 7.1.1–7.1.6.

7.1.1 Signal words. Safety-related information shall have the signal words “DANGER,” “WARNING,” and “CAUTION” in bold type, twice the size of normal type, and shall be contained in a bordered area. (See Appendix B.)