Ind. Admin. Code tit. 675, r. 20-2-20.1
Authority: IC 22-13-2-2
Affected: IC 22-12; IC 22-13; IC 22-15; IC 36-7
Sec. 20.1. (a) Pool outlets for circulated water shall be located to:
(b) Outlet drain covers and grates shall be installed in such a way that they cannot be removed without the use of tools.
(c) All pools shall be provided with a main outlet in the lowest point of the pool floor. All main drains smaller than a twelve (12) inch by twelve (12) inch grate shall be dual main outlets with a separation distance of three (3) feet between outlets in any dimension. All main outlets larger than a twelve (12) inch by twelve (12) inch grate shall be dual main outlets with a separation distance three (3) feet or more. The spacing of the main outlets for pool pump suction shall not be greater than thirty (30) feet on centers nor more than fifteen (15) feet from each side wall. See Table 20.1-1.
| Table 20.1-1 | |
| Flow rating for covers/grates | |
| Number of covers/grates per system | Minimum flow rating of each cover/grate % maximum system flow rate |
| 2 | 100% |
| 3 | 66.7% |
| 4 | 50% |
| 5 | 40% |
| 6 | 33.3% |
(d) The main outlet sumps shall be covered with suitable protective covers or grates. The total velocity through grate openings shall not exceed one and five-tenths (1.5) feet/second for flow through for suction grates. The grate opening shall not exceed one-quarter (1/4) inch.
(e) Main outlet piping shall be sized for removal of the water through it at a rate of at least one hundred percent (100%) of the design circulation flow rate at velocities specified in 675 IAC 20-2-18(e). It shall function as part of the circulation system. The piping system shall be valved to permit adjustment of flow through it.
(f) Main outlets shall conform to the requirements for [sic] of ASME A112.19.8 – 2007 (Revision of ASME/ANSI A112.19.8M-1987(R1996)) Suction Fittings for Use in Swimming Pools, Wading Pools, Spas, and Hot Tubs, as published by the American Society of Mechanical Engineers, Three Park Avenue, New York, New York 10016.
(Fire Prevention and Building Safety Commission; 675 IAC 20-2-20.1; filed Mar 25, 2011, 10:19 a.m.: 20110420-IR-675090789FRA; readopted filed Aug 7, 2013, 8:51 a.m.: 20130904-IR-675130181RFA; readopted filed Jul 2, 2019, 2:21 p.m.: 20190731-IR-675190264RFA; readopted filed Nov 18, 2025, 10:36 a.m.: 20251210-IR-675240566RFA)