SECTION 748:20-15-11. IPC® 2015 Chapter 6 Water Supply and Distribution

  Chapter 6 of the IPC® 2015 is adopted with the following modifications:

(1)   Section 604.5 Size of fixture supply. This section has been modified to add an exception to allow domestic dishwashers and drinking fountains to terminate more than 30 inches (762 mm) from the point of connection to the fixture. This section has been modified to read: 604.5 Size of fixture supply. The minimum size of a fixture supply pipe shall be as shown in Table 604.5. The fixture supply pipe shall terminate not more than 30 inches (762 mm) from the point of connection to the fixture. A reduced size flexible water connector installed between the supply pipe and the fixture shall be of an approved type. The supply pipe shall extend to the floor or wall adjacent to the fixture. The minimum size of individual distribution lines utilized in gridded or parallel water distribution systems shall be as shown in Table 604.5. Exception: The fixture supply pipe for domestic dishwashers and drinking fountains shall be permitted to be terminated more than 30 inches (762 mm) from the point of connection to the fixture.

(2)   Section 608.16.5 Connections to lawn irrigation systems. This section has been modified to add a spill resistant backflow preventer as an option for protection. This section has been modified to read: 608.16.5 Connections to lawn irrigation systems. The potable water supply to lawn irrigation systems shall be protected against backflow by an atmospheric-type vacuum breaker, a pressure-type vacuum breaker assembly, a spill resistant backflow preventer or a reduced pressure principle backflow preventer. A valve shall not be installed downstream from an atmospheric vacuum breaker. Where chemicals are introduced into the system, the potable water supply shall be protected against backflow by a reduced pressure principle backflow preventer assembly.

[Source: Added at 29 Ok Reg 1659, eff 11-1-12; Amended at 32 Ok Reg 2270, eff 11-1-15]