74:02:04:40Horizontal closed-loop
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
installation. All plastic piping used for closed-loop installation must meet or exceed ASTM D 2666-89 or ASTM Standard D 3035-91 and must be joined by thermal fusion.
Source: 12 SDR 50, effective September 29, 1985; 13 SDR 129, 13 SDR 141, effective July 1, 1987; 18 SDR 224, effective July 16, 1992.