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2. Roof drains shall be so constructed that the drains can be cleaned and the drain inlets accessible at all time.
3. Roof drains shall be sized in accordance with s. SPS 382.36 and the drain outlet may not be less than 2 inches in diameter.
Note: See s. SPS 382.36 (10) and (11) for additional roof drain requirements.
(f) Area drain inlets. Area drain inlets shall be constructed in a watertight manner of precast concrete, reinforced monolithic concrete, brick or block, cast iron, coated 12 gauge steel, vitrified clay, fiberglass or other approved materials.
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a. Thermoplastic sewer pipe shall be installed in accordance with ASTM D2774.
b. Copper tubing, type M, may not be installed underground.
(4) Water supply systems. Water supply systems shall be of such material and workmanship as set forth in this subsection. All materials in contact with water, in a water supply system, shall be suitable for use with the water within the system. All pipes and pipe fittings for water supply systems shall be made of a material that contains a weighted average of not more than 0.25 percent lead in the wetted surface material.
(a) Water quality. A water supply system shall be resistive to corrosive action and degrading action from the water being conveyed. Potable water storage tanks shall conform to s. NR 812.33.
(b) Soil and groundwater. The installation of water supply systems shall be prohibited in soil and groundwater that is contaminated with solvents, fuels, organic compounds or other detrimental materials which will cause permeation, corrosion, degradation, or structural failure of the piping material.
1. Where detrimental conditions are suspected, a chemical analysis of the soil and groundwater conditions shall be required to ascertain the acceptability of the proposed water supply system materials for the specific installation.
2. Where a detrimental condition exists, no underground water supply system may be installed until the detrimental condition can be:
a. Eliminated and the source of the condition can be eliminated;
b. Identified and the pipe and joining method can be proven resistant to the detrimental condition; or
c. Avoided by choosing an alternate route that will not be affected by the detrimental condition.
(c) Certification of plastic pipe. Plastic pipe for a water supply system shall be certified for potable water contact by a nationally recognized listing agency acceptable to the department.
Note: For a listing of nationally recognized agencies acceptable to the department, see ch. SPS 384 Appendix A-384.11.
(d) Water services and private water mains.
1. Water service pipe and private water mains shall conform to one of the standards listed in Table 384.30-7. Pipe and tubing for water services and private water mains shall have a minimum working pressure of 150 psig at 73.4°F.
2. A local governmental unit may by ordinance restrict the types of materials for water services and private water mains which are to be located within or beneath an area subject to an easement for a highway, street or public service right-of-way. Before adopting an ordinance restricting the types of materials for water services, the local governmental unit shall submit a copy of the proposed ordinance to the department for review and approval.
3. Materials for combination water services and combination private water mains shall comply with NFPA 24 and the provisions specified in par. (d).
(e) Water distribution pipe.
1. Except as provided in subd. 2. or 3., water distribution pipe shall have a minimum working pressure of 100 psig at 180°F and shall conform to one of the standards listed in Table 384.30-8
2. Cold water distribution pipe installed underground shall have a minimum working pressure of 150 psig at 73.4°F and shall conform to one of the standards listed in Table 384.30-7 or 384.30-8.
Note: Portions of a water supply system that supply water to a water-based fire protection system are to also conform to chs. SPS 361 to 365.
Note: See ch. SPS 384 Appendix for further explanation.
3. Pipe and tubing for cold water distribution systems downstream of water treatment devices designed to serve fixtures, appliances and devices that provide <1 gpm at each outlet shall conform to one of the standards listed in Table 384.30-8 or 384.30-11, and shall have a minimum working pressure of 100 psig at 73.4°F.
4. Plastic pipe and tubing for water distribution systems downstream of water treatment devices designed to serve fixtures, appliances and devices that provide <1 gpm at each outlet shall be marked at intervals not to exceed 4 feet with the following information:
a. The manufacturer’s name.
b. The trade designation of the pipe or tubing.
c. The type of material.
d. The minimum working temperature and pressure of the pipe or tubing.
e. The mark of the certifying agency.
(f) Used piping. Piping which has been used for any other purpose than conveying potable water may not be used for water supply systems.
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a. Plastic water service systems shall be installed in accordance with ASTM D2774.
b. Copper tubing, type M, may not be installed underground.
c. Copper pipe or tubing shall not be installed if the pH of the water to be conveyed is 6.5 or less.
d. May not be threaded.
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a. Plastic pipe and tubing installed underground shall be in accordance with ASTM D2774.
b. Copper tubing, type M, may not be installed underground.
c. Use is limited to pipe 21/2 inches or less in diameter for sch 80 and 1 inch or less in diameter for sch 40.
d. Use is limited to pipe with a SDR 11 or less.
e. Copper pipe or tubing shall not be installed if the pH of the water to be conveyed is 6.5 or less.
f. Use is limited to cold water distribution only.
g. May not be threaded.
(5) Pipe fittings and valves.
(a) Fittings. Pipe fittings shall conform to the pipe material standards listed in this chapter or one of the standards listed in Table 384.30-11. Threaded drain pipe fittings shall be of the recessed drainage type.
(b) Water supply valves.
1. Control valves for water services and private water mains shall be designed and constructed to withstand a minimum pressure of 125 psig at 73.4°F.
2. Control valves for water distribution systems shall be designed and constructed to withstand a minimum pressure of 100 psig at 180°F.
3. Except for a valve integral to a device, a control valve which serves 2 or more plumbing fixtures shall have, with the valve in a fully open position, a flow through passageway of not less than one nominal pipe size smaller than the nominal size of the piping connecting to the valve.
4. A control valve which serves 2 or more plumbing fixtures may not be a globe type valve.
(c) Special fittings and valves.
1. Water hammer arrestors shall conform to ASME A112.26.1 or ASSE 1010.
2. Relief valves and automatic gas shutoff devices for hot water supply systems shall conform to ANSI Z21.22.
3. Backwater valves shall conform to ASME A112.14.1, CAN/CSA B181.1 or CAN/CSA B181.2.
4. Atmospheric type vacuum breakers shall conform to ASSE 1001 and CAN/CSA B64.1.1.
5. Water pressure reducing valves and strainers for water pressure reducing valves for domestic water supply systems shall conform to ASSE 1003.
6. Hose connection vacuum breakers shall conform to ASSE 1011 or CAN/CSA B64.2.
7. Backflow preventers with an intermediate atmospheric vent shall conform to ASSE 1012 and dual check type atmospheric port backflow preventers shall conform to CAN/CSA B64.3.
8. Reduced pressure backflow preventers and reduced pressure fire protection principle backflow preventers, or backflow preventers, reduced pressure principle type (RP) shall conform with ASSE 1013 or CAN/CSA B64.4.
Note: Reduced pressure backflow preventers and reduced pressure detector fire protection backflow preventers are not permitted for cross connection control.
9. Double check backflow prevention assemblies shall conform to ASSE 1015 or CAN/CSA B64.5.
Note: Double check fire protection backflow preventer assemblies are not permitted for cross connection control.
10. Individual thermostatic, pressure balancing, and combination pressure balancing and thermostatic control valves serving individual showers shall conform to ASSE 1016 or CAN/CSA B125.
11. Trap seal primer valves, water fed shall conform to ASSE 1018.
12. Vacuum breaker wall hydrants, freeze resistant automatic draining type shall conform to ASSE 1019, types A, or B, or C.
13. Pressure vacuum breaker assemblies shall conform to ASSE 1020 or CAN/CSA B64.1.2.
14. Laboratory faucet backflow preventers shall conform to ASSE 1035 and laboratory faucet type vacuum breakers shall conform to CAN/CSA B64.7.
15. Reduced pressure detector fire protection, backflow prevention assemblies shall conform to ASSE 1047.
16. Double check detector assembly backflow preventers shall conform to ASSE 1048.
17. Back siphonage backflow vacuum breakers shall conform to ASSE 1056.
18. Hose connection backflow preventers shall conform to ASSE 1052.
19. Backflow preventers for carbonated beverage machines shall conform to ASSE 1022.
20. Dual check backflow preventers in freeze resistant types of wall hydrants shall conform to ASSE 1053.
21. Trap seal primer valves, drainage and electric types, shall conform to ASSE 1044.
(d) Pipe saddles in drainage systems. Pipe saddles shall be installed in accordance with the instructions of the saddle manufacturer and conform to all of the following limitations:
1. Pipe saddles may be installed on private interceptor main sewers, building sewers, underground drain and vent pipe and tubing, and where otherwise approved by the department.
2. A saddle for drain piping shall have a radius in accordance with s. SPS 382.30 (8) (a).
3. The material of the saddle shall be compatible with the materials of the pipes which are to be connected to the saddle.
4. The hole in the pipe which is to receive the saddle shall be drilled or cored to match the saddle outlet.
5. Straps or clamps which wrap around the pipe and saddle shall be provided by the manufacturer of the saddle.
6. Saddles shall be installed with straps or clamps which wrap around the pipe and saddle.
7. Proper hangers or bedding shall be provided to maintain alignment between the opening in the pipe and the saddle.
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a These materials are approved for cold water use only.
b Copper tubing, Type M, shall not be installed underground.
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.