SPS 382.31(17)(b)2.
2. No more than 2 water closets may connect to the building drain or building subdrain by means of building drain branches or building subdrain branches.
SPS 382.31(17)(b)3.a.a. That portion of the building drain or building subdrain between the connection of the building drain branch or building subdrain branch and the vent or drain required in
subd. 1. shall be at least one pipe size larger than the minimum size permitted in Table 382.30–3 based on the total drainage fixture unit load, but not less than 3 inches.
SPS 382.31(17)(b)3.b.
b. The vent or drain required in
subd. 1. shall be at least one-half the diameter of that portion of the building drain or building subdrain which is vented by the vent or drain, but may not be less than 2 inches in diameter.
SPS 382.31(17)(b)3.c.
c. A vent serving a drain required in
subd. 1., shall be at least one half the diameter of that portion of the building drain or building subdrain which is vented by the system, but may not be less than 2 inches in diameter.
SPS 382.31(17)(b)4.
4. The trap of a floor drain or a floor outlet fixture, except a water closet, connected to a building drain branch or building subdrain branch shall be at least 3" in diameter.
SPS 382.31(17)(b)5.
5. A building drain branch or building subdrain branch may not connect to a building drain or building subdrain downstream from the base fitting of a drain stack 2" or larger in diameter within the distance equal to 20 pipe diameters of the building drain or building subdrain.
SPS 382.31(17)(b)6.
6. The pitch and the developed length of the building drain branch or building subdrain branch may not exceed the limits specified in Table 382.31-1.
SPS 382.31 Note
Note: See ch.
SPS 382 Appendix for further explanatory material.
SPS 382.31(17)(c)
(c) Laboratory sink venting. A horizontal drain may serve as a combination drain and vent system for island laboratory sinks in accordance with
subds. 1. to
7.
SPS 382.31(17)(c)1.
1. A vent stack or a drain stack at least 2" in diameter shall be connected upstream of any fixture drain vented by the combination drain and vent system.
SPS 382.31(17)(c)2.a.a. That portion of the horizontal drain between the connection of fixture drain and the vent stack or drain stack required in
subd. 1. shall be at least one pipe size larger than the minimum size permitted in Table 382.30-2 based on total drainage fixture unit load.
SPS 382.31(17)(c)2.b.
b. The vent stack or drain stack required in
subd. 1. shall be at least one-half the diameter of that portion of the horizontal drain which is vented by the stack, but may not be less than 2
‶ in diameter.
SPS 382.31(17)(c)2.c.
c. A stack vent serving a drain stack required in
subd. 1. shall be at least one half the diameter of that portion of the horizontal drain which is vented by the stack, but may not be less than 2" in diameter.
SPS 382.31(17)(c)3.
3. All fixture drains vented by the horizontal drain shall be at least 3" in diameter.
SPS 382.31(17)(c)4.
4. Fixture drains to be vented by the horizontal drain shall connect individually to the horizontal drain.
SPS 382.31(17)(c)5.
5. An individual vent or common vent shall be extended as high as possible under the sink enclosure and then returned vertically downward and connected to the horizontal drain. A cleanout shall be provided on the vent piping.
SPS 382.31(17)(c)6.
6. In lieu of connecting the vent to the horizontal drain which forms the combination drain and vent system, the vent may connect to a horizontal fixture drain vented by the combination drain and vent system. The pitch and developed length of the horizontal fixture drain shall not exceed the limits specified in Table 382.31-1.
SPS 382.31(17)(c)7.
7. Fixture drains to be vented by the horizontal drain shall not connect to a horizontal drain downstream from the base fitting of a drain stack 2" or larger in diameter within the distance equal to 20 pipe diameters of the horizontal drain serving the stack.
SPS 382.31 Note
Note: See ch.
SPS 382 Appendix for further explanatory material.
SPS 382.31(18)
(18) Prohibited uses. A vent or vent system shall not be used for purposes other than the venting of the plumbing system.
SPS 382.31(18)(a)
(a) Boiler blowoff basin vents. Vent piping from boiler blowoff basins shall not be connected to a vent or vent system serving a sanitary drain system, storm drain system or chemical waste system.
SPS 382.31(18)(b)
(b) Chemical waste vents. Vent piping for chemical waste systems shall not be connected to a vent system serving a sanitary drain system or storm drain system.
SPS 382.31(18)(c)
(c) Steam vents. Vents serving steam operated sterilizers, cleansing or degreasing equipment, pressing machines or any other apparatus which normally discharges steam into the vent shall not be connected to a vent or a vent system serving a sanitary drain system, storm drain system or chemical waste system.
SPS 382.31 History
History: Cr.
Register, February, 1985, No. 350, eff. 3-1-85; am. (11) (a), (17) (b) 3. b. and (c) 2. b., r. and recr. (11) (b), r. (13) (a) 2., cr. (17) (b) 3. c. and (c) 2. c.,
Register, May, 1988, No. 389, eff. 6-1-88; reprinted to correct (17) (c) 4.,
Register, February, 1991, No. 422; cr. (4) (b) 4. and (17) (a) l. f., r. and recr. (5) (c) l. c. and (17) (c) 4., am. (5) (c) 2. c., (10) (intro.), (b) 1., (11) (b), (17) (a) l. e. and (17) (b),
Register, August, 1991, No. 428, eff. 9-1-91;
am. (6) (c), (7) (b), (10) (intro.), (a), (b) 1., (e), (13) (a) 1. c., (c) (intro.), 1. and 4., r. (16) (h),
Register, February, 1994, No. 458, eff. 3-1-94;
CR 02-002: renum. (8) to be (8) (a) and am., cr. (8) (b), (14) (j) and (16) (h), am. (11) (a), (12) (intro.), (a), (13) (c) 1. (17) (a) 1. (intro.) to b., and Table 82.31-4, r. and recr. Table 82.31-5,
Register April 2003 No. 568, eff. 5-1-03;
CR 08-055: am. (4) (a), (10) (c), (13) (a) 1. e., (14) (g) 2., (17) (a) 1. e., (b) 1. and 3., r. and recr. (5) and (6), r. (17) (a) 1. f.
Register February 2009 No. 638, eff. 3-1-09; correction in (17) (a) 1. (intro.) made under s.
13.92 (4) (b) 7., Stats.,
Register February 2009 No. 638;
CR 10-064: am. (5) (a) 2., (6) (c), (17) (a) 2., r. (14) (g) 2., renum. (14) (g) 3. and 4. to be (14) (g) 2. and 3.
Register December 2010 No. 660, eff. 1-1-11; correction in (14) (g) (intro.) made under s.
13.92 (4) (b) 7., Stats.,
Register December 2010 No. 660; correction in (2), (5) (a) 2., (9) (a) 1., 2., (12) (d), (14) (a) (intro.), (b) 1., (c), (d), (e), (f), (g) 1., 2., 3., (i) 1. a., b., (j), (17) (a) 1. b., d., e., (b) 3. a., 6., (c) 2. a., 6. made under s.
13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672.
SPS 382.32
SPS 382.32 Traps and direct fixture connections. SPS 382.32(1)(1)
Scope. The provisions of this section set forth the requirements for the types and installation of traps and direct fixture connections.
SPS 382.32(2)
(2) Materials. All traps and fixture connections shall be of approved materials in accordance with
ch. SPS 384.
SPS 382.32(3)
(3) General. Each plumbing fixture, each compartment of a plumbing fixture and each floor drain shall be separately trapped by a water seal trap, except as provided in
par. (a) or as otherwise permitted by this chapter. A fixture shall not be double trapped.
SPS 382.32(3)(a)
(a) Trap exceptions. The plumbing fixtures listed in
subds. 1. to
3. shall not be required to be separately trapped:
SPS 382.32(3)(a)2.
2. Compartments of a combination plumbing fixture installed on one trap, provided:
SPS 382.32(3)(a)2.b.
b. The distance between the compartments' waste outlets farthest apart does not exceed 30"; and
SPS 382.32(3)(b)
(b) Trap seals. Each trap shall provide a liquid seal depth of not less than 2" and not more than 4", except as otherwise specified in this chapter.
SPS 382.32(3)(c)
(c) Loss of trap seal. A trap seal primer valve may be installed on a trap subject to high rates of evaporation.
SPS 382.32(3)(c)1.
1. A trap seal primer valve or other means of trap seal protection acceptable to the department shall be provided for a trap subject to seal loss due to evaporation.
SPS 382.32 Note
Note: Liquids acceptable to use for reducing trap seal evaporation include mineral oil, vegetable oil, propylene glycol and glycerin.
SPS 382.32 Note
Note: A list of referenced standards is contained in ch.
SPS 381.
SPS 382.32(3)(d)
(d) Design. Traps shall be self-scouring and shall not have interior partitions, except where such traps are integral with the fixture. Uniform diameter P-traps shall be considered self-scouring.
SPS 382.32(3)(f)
(f) Prohibited traps. The installation of the types of traps listed in
subds. 1. to
6. shall be prohibited:
SPS 382.32(3)(f)4.
4. Separate fixture traps which depend on interior partitions for the trap seal;
SPS 382.32(4)(a)(a) Setting of traps. All traps shall be rigidly supported and set true with respect to the water level and so located as to protect the water seals, and shall be protected from freezing and evaporation.
SPS 382.32(4)(b)1.1. `Vertical distance.' Except as provided in
subd. 1. a. to
c., the vertical distance between the top of the fixture drain outlet and the horizontal center line of the trap outlet shall not exceed 15".
SPS 382.32(4)(b)1.a.
a. The vertical distance between the top of the strainer of a floor drain or the opening of a standpipe receptor and the horizontal center line of the trap outlet shall not exceed 36".
SPS 382.32(4)(b)1.b.
b. The vertical distance between the top of the fixture drain outlet of a pedestal fixture or a cuspidor and the horizontal center line of the trap outlet shall not exceed 60".
SPS 382.32(4)(b)1.c.
c. The vertical distance between the water level in the bowl of a floor outlet water closet and the center line of the horizontal portion of the fixture drain shall not exceed 36".
SPS 382.32(4)(b)1.d.
d. The vertical distance from the inlet to the horizontal centerline of the fixture drain for a campsite receptor, exterior storm drain inlet, or a receptor for a sanitary dump station may exceed 3 feet so as to permit the trap to be installed below the predicted depth of frost.
SPS 382.32(4)(b)2.
2. `Horizontal distance.' Except as provided in
subd. 2. a. and
b., the horizontal distance between the vertical centerline of a fixture drain outlet and the vertical centerline of the trap inlet shall not exceed 15".
SPS 382.32(4)(b)2.a.
a. The horizontal distance for a pedestal drinking fountain shall not exceed 24".
SPS 382.32(4)(b)2.b.
b. The horizontal distance for an exterior sanitary area drain or a residential garage floor drain discharging through an interior trap shall not exceed 25 feet.
SPS 382.32(4)(b)2.c.
c. The minimum horizontal distance between the vertical centerline of the outlet from a floor-mounted water closet and a 3-inch double tee shall be 30 inches.
SPS 382.32 Note
Note: See ch.
SPS 382 Appendix for further explanatory material.
SPS 382.32(5)
(5) Direct fixture drain connection. Except as provided in
s. SPS 382.33, all plumbing fixtures and appliances discharging wastes shall connect directly to a drain system.
SPS 382.32(5)(a)1.1. Floor drains shall be so located as to be accessible for cleaning purposes.
SPS 382.32(5)(a)2.
2. A floor drain receiving the wash from garbage cans shall be at least 3" in diameter.
SPS 382.32(5)(b)
(b) Kitchen sinks. Horizontal drain piping serving a kitchen sink trap shall not connect to vertical drain piping by means of a double sanitary tee.
SPS 382.32(5)(c)
(c) Water closets. A water closet shall discharge through a drain pipe or fitting with a minimum diameter of 3".
SPS 382.32(5)(c)1.
1. A floor mounted wall outlet water closet shall connect to a 4 inch or 4
× 3 inch closet collar fitting or to a horizontal or vertical carrier type fitting.
SPS 382.32(5)(c)2.
2. A floor outlet water closet shall connect to a 4 inch or 4
× 3 inch closet collar fitting. A 4
× 3 inch closet bend fitting may be installed where a 4 inch closet collar fitting is used.
SPS 382.32(5)(c)3.
3. A wall mounted wall outlet water closet shall connect to a horizontal or vertical carrier type fitting.
SPS 382.32(5)(c)4.
4. Two water closets discharging to a vertical drain from opposite sides by means of the same fitting shall be installed in accordance with
subd. 4. a. and
b.
SPS 382.32(5)(c)4.a.
a. Where the vertical drain is 3" in diameter, the fitting for floor outlet water closets shall be a 3 inch double wye pattern fitting.
SPS 382.32(5)(c)4.b.
b. Where the water closets are wall outlet types the fitting shall be a double wye pattern fitting or a carrier-type fitting.
SPS 382.32(5)(d)
(d) Blowout-type fixtures. Blowout-type plumbing fixtures shall be installed in accordance with the approval of the department.
SPS 382.32 History
History: Cr.
Register, February, 1985, No. 350, eff. 3-1-85; am. (4) (a), cr. (5) (intro.) and (d),
Register, May, 1988, No. 389, eff. 6-1-88; am. (4) (b) 1. b.,
Register, April, 2000, No. 532, eff. 7-1-00;
CR 02-002: r. and recr. (3) (c) 1. and (4) (b) 2., am. (4) (b) 1. b., cr. (4) (b) 1. d.,
Register April 2003 No. 568, eff. 5-1-03;
CR 02-129: am. (3) (intro.)
Register January 2004 No. 577, eff. 2-1-04;
CR 04-035: am. (3) (a) 3.
Register November 2004 No. 587, eff. 12-1-04;
CR 08-055: cr. (4) (b) 2. c.
Register February 2009 No. 638, eff. 3-1-09; correction in (2), (3) (a) 3., (e), (5) (intro.) made under s.
13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672.
SPS 382.33
SPS 382.33 Indirect and local waste piping. SPS 382.33(1)(a)(a) The provisions of this section set forth the requirements for the installation of indirect waste piping and local waste piping.
SPS 382.33(1)(b)
(b) Indirect waste piping and local waste piping draining the fixtures, appliances and devices having a public health concern, including but not limited to those listed in Table 382.33-1, shall be considered as plumbing and shall comply with the provisions of this section.
SPS 382.33(2)
(2) Materials. Indirect waste piping more than 30" in length and all local waste piping shall be of approved materials in accordance with
ch. SPS 384.
SPS 382.33(3)
(3) Size. Except as provided in
pars. (a) and
(b), indirect waste piping more than 30" in length and all local waste piping shall be sized in accordance with
s. SPS 382.30.
SPS 382.33(3)(a)
(a) Indirect or local waste piping not exceeding 20 feet in length for refrigerated food display cases may not be less than one inch in diameter.
SPS 382.33(3)(b)
(b) Indirect waste piping, attached to an appliance, appurtenance or equipment through which pressurized waste is discharged, shall be sized in accordance with specifications of the manufacturer of the appliance, appurtenance or equipment.
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See PDF for table 
SPS 382.33(4)
(4) Installation. Indirect waste piping and local waste piping shall be so installed as to permit access for flushing and cleaning.
