Oklahoma Administrative Code
Title 748 - Oklahoma Uniform Building Code Commission
Chapter 20 - Adopted Codes
Subchapter 16 - IPC[®] 2018
Section 748:20-16-11 - IPC[®] 2018 Chapter 6 Water Supply and Distribution

Universal Citation: OK Admin Code 748:20-16-11

Current through Vol. 42, No. 1, September 16, 2024

Chapter 6 of the Oklahoma adopted IPC® 2018 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) Table 605.3 Water Service Pipe. This table has been modified to address errata published by the ICC® to correct a standard listing from "CSA B137.11" to "CSA B137.1" in the 16th line of the table. The table has been modified to read: Table 605.3 Water Service Pipe. The table contains 19 rows and 2 columns, and is described below:

(A) Row 1 contains the header row. Each column heading is listed below:
(i) Row 1, column 1, is entitled "Material."

(ii) Row 1, column 2, is entitled "Standard."

(B) Row 2 containing the material type entitled "Acrylonitrile butadiene styrene (ABS) plastic pipe" in column 1, was not modified.

(C) Row 3 containing the material type entitled "Chlorinated polyvinyl chloride (CPVC) plastic pipe" in column 1, was not modified.

(D) Row 4 containing the material type entitled "Chlorinated polyvinyl chloride/aluminum/chlorinated polyvinyl chloride (CPVC/AL/CPVC)" in column 1, was not modified.

(E) Row 5 containing the material type entitled "Copper or copper-alloy pipe" in column 1, was not modified.

(F) Row 6 containing the material type entitled "Copper or copper-alloy pipe (Type K, WK, L, WL, M or WM)" in column 1, was not modified.

(G) Row 7 containing the material type entitled "cross-linked polyethylene (PEX) plastic pipe and tubing" in column 1, was not modified.

(H) Row 8 containing the material type entitled "Cross-linked polyethylene/aluminum/cross linked polyethylene (PEX-AL-PEX) pipe" in column 1, was not modified.

(I) Row 9 containing the material type entitled "Cross-linked polyethylene/aluminum/high-density polyethylene (PEX-AL-HDPE)" in column 1, was not modified.

(J) Row 10 containing the material type entitled "Ductile iron water pipe" in column 1, was not modified.

(K) Row 11 containing the material type entitled "Galvanized steel pipe" in column 1, was not modified.

(L) Row 12 containing the material type entitled "Polyethylene (PE) plastic pipe" in column 1, was not modified.

(M) Row 13 containing the material type entitled" Polyethylene (PE) plastic tubing" in column 1, was not modified.

(N) Row 14 containing the material type entitled "Polyethylene/aluminum/polyethylene (PE-AL-PE) pipe" in column 1, was not modified.

(O) Row 15 containing the material type entitled "Polyethylene of raised temperature (PE-RT) plastic tubing" in column 1 was not modified.

(P) Row 16 has been modified to read as described below:
(i) Row 16, column 1 lists the material type: "Polypropylene (PP) plastic pipe or tubing."

(ii) Row 16, column 2 lists the standards: "ASTM F2389; CSA B137.1."

(Q) Row 17 containing the material type entitled "Polyvinyl chloride (PVC) plastic pipe in column 1 was not modified.

(R) Row 18 containing the material type entitled "Stainless steel pipe (Type 304/304L)" in column 1, was not modified.

(S) Row 19 containing the material type entitled "Stainless steel pipe (Type 316/316L)" in column 1, was not modified.

(3) Section 608.16.4 Protection by a vacuum breaker. This section has been modified to address errata published by the ICC to specify the critical level of installation height of the vacuum breaker shall be not less than 12 inches (305 mm) above the highest elevation of downstream piping and flood level rim of the fixture or device. This section has been modified to read: 608.16.4 Protection by a vacuum breaker. Openings and outlets shall be protected by atmospheric-type or pressure-type vacuum breakers. The vacuum breaker has a critical level installation height of not less than 12 inches (305 mm) above the highest elevation of downstream piping and flood level rim of the fixture of device. Fill valves shall be set in accordance with Section 415.3.1. Vacuum breakers shall not be installed under exhaust hoods or similar locations that will contain toxic fumes or vapors. Pipe applied vacuum breakers shall be installed not less than 6 inches (152 mm) above the flood level rim of the fixture, receptor, or device served.

(4) Section 608.17.5 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: 608.17.5 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.

(5) Section 608.17.7 Chemical dispenser. This section has been modified to address errata published by the ICC®. The modification deletes a reference to a section that is not applicable to this section of code. This section has been modified to read: 608.17.7 Chemical dispenser. Where chemical dispensers connect to the potable water distribution system, the water supply system shall be protected against backflow in accordance with Section 608.14.1, 608.14.2, 608.14.5, 608.14.6 or 608.14.8.

Disclaimer: These regulations may not be the most recent version. Oklahoma may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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