SPS 382.30(13)(a)1. 1. All pipe openings through floors shall be provided with sleeves bonded to the floor construction and protruding not less than one inch above the top of the finish floor with the space between sleeve and the piping sealed.
SPS 382.30(13)(a)2. 2. Plumbing fixtures, except bathtubs and showers, shall be of the wall mounted type. Bathtubs shall have waste and overflow connections made above the floor and piped to a trap below the floor.
SPS 382.30(13)(a)3. 3. Floor and shower drains installed shall be equipped with integral seepage pans.
SPS 382.30(13)(a)4. 4. Cleanouts for piping shall be extended through the floor construction above.
SPS 382.30(13)(a)5. 5. Piping subject to operation at temperatures that will form condensation on the exterior of the pipe shall be thermally insulated.
SPS 382.30(13)(b) (b) Where drain piping is located in ceilings of areas where food, ice or potable liquids are prepared, handled stored or displayed, the ceilings shall be of the removable type, or shall be provided with access panels in order to provide an access for inspection of the piping.
SPS 382.30(13)(c) (c) Exposed drain piping shall not be located over a pool, surge tank or an open filter for a pool.
SPS 382.30 History History: Cr. Register, February, 1985, No. 350, eff. 3-1-85; am. Table 82.30-1, (8) (a), (9) (c) (intro.) and 3., and (10) (b) 3. b., r. and recr. (4) (d) 2., Table 82.30-4, (10) (a) 2. b., (11) (intro.) and (f) 2., cr. (8) (a) 1. to 3. and (9) (d), r. (9) (c) 4., renum. (9) (c) 5. to be 4. and am., Register, May, 1988, No. 389, eff. 6-1-88; r. and recr. (4) (d), am. Table 82.30-3 and 82.30-7, r. (11) (intro.), renum. (11) (a) to (f) to be (b) to (g), cr. (11) (a) and (12) (f), Register, August, 1991, No. 428, eff. 9-1-91; am. Table 82.30-1, Register, April, 1992, No. 436, eff. 5-1-92; am. (7) (a) and (b), (11) (c) 1. a., (12) (e) 1. and Table 82.30-1, cr. (10) (a) 5., r. (11) (b) 1. b., renum. (11) (b) 1. c. to be (11) (b) 1. b., Register, February, 1994, No. 458, eff. 3-1-94; reprinted to restore dropped copy in (10) (b) 3. b., Register, July, 1994, No. 463; corrections in (11) (f) and (12) (g) made under s. 13.93 (2m) (b) 7., Stats., Register, April, 1998, No. 508; am. (11) (g) 2., Register, April, 2000, No. 532, eff. 7-1-00; CR 02-002: am. (4) (d) 5., (5) (b) 2. b., (c) 2., (10) (a) 2., (b) 4. b., (11) (b) 1. a., (c) 2. a. to c., 3. (intro.), (g) 2., (12) (f) (intro.) and 1., and Tables 82.30-1, 2, 3, 5 and 6, cr. (10) (b) 2. d., (c), (d), (11) (b) 3. b. and (c) 2. e., r. and recr. (11) (a) 2., (d), and (12) (f) 2., renum. (11) (b) 3., (c) 3. b. and c. to be (11) (b) 3. a., (c) 3. c. and d., Register April 2003 No. 568, eff. 5-1-03; CR 04-035: r. (3) (b) 32. a., am. Table 82.30-1 Register November 2004 No. 587, eff. 12-1-04; CR 07-069: cr. (11) (h) Register February 2008 No. 626, eff. 3-1-08; CR 08-055: am. (3), (6) (a) 2., (b) 1. to 3., (10) (a) 1., Tables 82.30-1 and 82.30-3, r. (4) (b), renum. (4) (c) to (e) and (11) (h) 1. g. to i. to be (4) (b) to (d), and (11) (h) 1. h. to j., r. and recr. (6) (b) 4., 5., (11) (e) 2., 3., (f) 2. and Table 82.30-2, cr. (11) (h) 1. g. Register February 2009 No. 638, eff. 3-1-09; correction in (6) (a) made under s. 13.92 (4) (b) 1., Stats., Register February 2009 No. 638; CR 10-064: am. (6) (a) 2., (b) (intro.), 5. a., Table 82.30-2, cr. (6) (c) Register December 2010 No. 660, eff. 1-1-11; correction in (2), (3) (a) 1., 2., (4) (a) 1., (c) 4., (5) (b) 1., 2. a., (c) 1., (6) (a) 2., (b) 5. a., b., (c), (8) (a), (9) (d), (10) (a) 3., 4., (d) 1. b., (11) (c) 2. d., 3. a., b., c., (g) 2., (h) 1. f., (12) (c), Table 328.30-1, Table 328.30-2 made under s. 13.92 (4) (b) 7., Stats., Register December 2011 No. 672.
SPS 382.31 SPS 382.31 Vents and venting systems.
SPS 382.31(1) (1) Scope. The provisions of this section set forth the requirements for the design and the installation of vents and venting systems.
SPS 382.31(2) (2)Materials. All vents and venting systems shall be constructed of approved materials in accordance with ch. SPS 384.
SPS 382.31(3) (3)General.
SPS 382.31(3)(a)(a) Vents. Every trap and trapped plumbing fixture shall be provided with an individual vent, except as otherwise permitted in this chapter. Vents and venting systems shall be designed and installed so that the water seal of a trap shall be subject to a maximum pneumatic pressure differential equal to one inch of water column.
SPS 382.31(3)(b) (b) Main stack. Each gravity-flow sanitary building sewer shall be served by at least one stack which extends from a building drain to a vent terminal or vent header. The stack shall be not less than 3 in diameter from the building drain to the vent terminal or vent header.
SPS 382.31(4) (4)Vent stacks and stack vents.
SPS 382.31(4)(a)(a) Where required. A vent stack and a stack vent shall be installed to serve any drain stacks of 5 or more branch intervals.
SPS 382.31(4)(b) (b) Installation.
SPS 382.31(4)(b)1.1. The connection of the vent stack to a drain stack shall be at or below the lowest branch drain connection to the drain stack. The connection to the drain stack shall be by means of a wye pattern fitting installed in a vertical portion of the stack.
SPS 382.31(4)(b)2. 2. A vent stack and a stack vent shall:
SPS 382.31(4)(b)2.a. a. Extend to a vent terminal in accordance with sub. (16);
SPS 382.31(4)(b)2.b. b. Connect to a vent stack which extends to a vent terminal; or
SPS 382.31(4)(b)2.c. c. Connect to a stack vent at least 6" above the flood level rim of the highest fixture discharging into a drain stack.
SPS 382.31(4)(b)3. 3. Vent stacks and stack vents may connect into a common vent header and then shall extend to a vent terminal.
SPS 382.31(4)(b)4. 4. The connection of a vent stack with another vent may not be less than 38 above the next higher floor level where the plumbing fixtures are vented, but in no case lower than 2" above the elevation of the highest flood level rim of any fixture served by the vent.
SPS 382.31 Note Note: See ch. SPS 382 Appendix for further explanatory material.
SPS 382.31(5) (5)Relief and yoke vents for stack offsets.
SPS 382.31(5)(a)(a) Vents serving offsets of 30 to 45° in drain stacks.
SPS 382.31(5)(a)1.1. Except as permitted in subd. 2., where a horizontal branch connects to a drain stack within 2 feet above or below an offset with a change of direction of 30 to 45° from the vertical and the offset is located below 5 or more branch intervals, the offset shall be vented in accordance with par. (b) 1. to 3.
SPS 382.31(5)(a)2. 2. Where the drain stack and offset are sized as building drain as per Table 382.30–3, the vents serving the offset of 30 to 45° in a drain stack are not required.
SPS 382.31(5)(b) (b) Vents serving offsets of more than 45o in drain stacks. Offsets of more than 45o in drain stacks shall be vented where 5 or more branch intervals are located above the offset. The offset shall be vented by venting the upper and lower section of the stack.
SPS 382.31(5)(b)1. 1. `Upper section.' The upper section of the stack shall be vented as a separate stack with a vent stack connection installed in accordance with sub. (4). The offset shall be considered the base of the stack.
SPS 382.31(5)(b)2. 2. `Vent connection above offset.' The vent stack shall connect with a wye pattern fitting above the stack offset and at or below the lowest drain branch above the offset.
SPS 382.31(5)(b)3. 3. `Lower section.' The lower section of the stack shall be vented by a yoke vent connecting below the offset above or at the next lower horizontal branch.
SPS 382.31(5)(b)3.a. a. Except as provided in subd. 3. b., the connection of the yoke vent to the drain stack shall be by means of a wye pattern fitting.
SPS 382.31(5)(b)3.b. b. The yoke vent connection may be a vertical extension of the stack.
SPS 382.31(5)(b)3.c. c. The connection of the yoke vent to another vent shall not be less than 38 inches above the next higher floor level where plumbing fixtures are installed that discharge into the drain stack.
SPS 382.31(6) (6)Relief vents for stacks of more than 10 branch intervals.
SPS 382.31(6)(a)(a) Drain stacks of more than 10 branch intervals shall be provided with a relief vent at each tenth interval installed.
SPS 382.31(6)(b) (b) The lower end of the relief vent required in par. (a) shall connect to the stack by use of a wye pattern fitting below the horizontal branch serving that floor.
SPS 382.31(6)(c) (c) The upper end of the relief vent required in par. (a) shall connect to the vent stack not less than 38 inches above the next higher floor level where plumbing fixtures are installed that discharge into the drain stack.
SPS 382.31(7) (7)Relief vents for building drains. A building drain with a change in elevation of 12 feet or more and at an angle of 45° or more from the horizontal shall be provided with a relief vent.
SPS 382.31(7)(a) (a) The connection of the relief vent to the building drain shall be by means of a wye pattern fitting installed within 2 feet upstream of the top of the change in elevation.
SPS 382.31(7)(b) (b) The connection of the relief vent to another vent shall be not less than 38" above the next higher floor level where plumbing fixtures are installed that discharge through the building drain.
SPS 382.31 Note Note: See ch. SPS 382 Appendix for further explanatory material.
SPS 382.31(8) (8)Vents for sanitary sumps.
SPS 382.31(8)(a)(a) Interior sanitary sumps. Sanitary sumps shall be provided with a vent connecting either to the sump above the drain inlet or to the drain inlet within 12" of the sump.
SPS 382.31(8)(b) (b) Exterior sanitary sumps. Sanitary sumps shall be provided with a vent that terminates in accordance with sub. (16) (h).
SPS 382.31(9) (9)Fixture vents.
SPS 382.31(9)(a)(a) Developed length between vent and trap. Each fixture trap shall be protected with a vent located in accordance with the provisions of subds. 1. and 2.
SPS 382.31(9)(a)1. 1. Each fixture trap which is not an integral part of the fixture shall be protected with a vent so located that the developed length of the fixture drain piping from the trap weir to the vent connection is within the limits set forth in Table 382.31-1.
SPS 382.31(9)(a)2. 2. Each fixture trap which is an integral part of the fixture shall be protected with a vent so located that the developed length of the fixture drain piping from fixture outlet to the vent connection is within the limits set forth in Table 382.31-1. For a floor outlet water closet or similar fixture, the point where the fixture drain piping turns horizontal shall be considered as the fixture outlet.
SPS 382.31(9)(b) (b) Minimum distance. A vent shall not connect to a fixture drain within the distance equal to 2 diameters of the drain piping from the weir of a trap.
SPS 382.31 Note Note: See ch. SPS 382 Appendix for further explanatory material. - See PDF for table PDF
SPS 382.31(10) (10)Circuit venting. In lieu of providing individual vents, a horizontal drain to which at least 2 but not more than 8 wall outlet fixtures or at least 2 but not more than 8 floor outlet fixtures, other than blowout type fixtures and wall-outlet carrier type water closets, are connected to the same horizontal branch drain, may be vented by a circuit vent in accordance with pars. (a) to (e).
SPS 382.31(10)(a) (a) The circuit vent shall connect to the horizontal drain at a point between the 2 most upstream fixtures.
SPS 382.31(10)(b)1.1. A circuit vented horizontal drain into which 4 or more fixtures discharge shall be provided with a relief vent. The relief vent shall connect to the circuit vented horizontal drain downstream of the most downstream fixture drain which is vented by the circuit vent and upstream of any other drain connections.
SPS 382.31(10)(b)2. 2. Two circuit vented horizontal drains serving a total of 8 fixtures, 4 on each branch, shall be provided with at least one relief vent, unless the horizontal drains connect to a drain stack with no other drain connections located above the circuit vented horizontal drains. One relief vent may serve both horizontal drains, if installed downstream of the point where the 2 horizontal drains are joined.
SPS 382.31 Note Note: See ch. SPS 382 Appendix for further explanatory material.
SPS 382.31(10)(c) (c) A horizontal drain served by a circuit vent may not diminish in size from the most downstream fixture drain connection vented by the circuit vented drain to the circuit vent connection. Where a relief vent is installed, the horizontal drain served by the circuit vent shall not diminish in size from the relief vent connection to the circuit vent connection.
SPS 382.31(10)(d) (d) Fixture drains served by a circuit vent shall conform to the provisions of sub. (9). The connection of the fixture drain to the branch drain served by the circuit vent shall be considered as the vent connection.
SPS 382.31(10)(e) (e) Additional wall outlet fixtures with a drainage fixture unit value of one or less which are served by individual vents or common vents may discharge into a horizontal drain served by a circuit vent.
SPS 382.31(11) (11)Common vents. In lieu of providing individual vents, fixtures may be common vented in accordance with pars. (a) and (b).
SPS 382.31(11)(a) (a) Vertical drains. A common vent may serve a maximum of 2 fixtures where both fixture drains connect to a vertical drain at the same elevation. Where this connection is by means of a sanitary tee fitting with a side inlet, the centerline of the side inlet opening may not be below the centerline of the larger opening. The drain connection of a blowout type fixture or a kitchen sink served by a common vent may not be by means of a double sanitary tee fitting.
SPS 382.31(11)(b) (b) Horizontal branches. The fixture drains from 2 wall-outlet fixtures, each with a drainage fixture unit value of one or less, or the fixture drains from 2 traps serving a kitchen sink with or without a dishwasher may connect to a horizontal branch without individual vents provided a common vent connects to the branch drain downstream of both fixture drains. Both fixture drains shall be of the same diameter. The developed length of the drain from the vent to the farthest trap shall conform to sub. (9).
SPS 382.31 Note Note: See ch. SPS 382 Appendix for further explanatory material.
SPS 382.31(12) (12)Return vents. Plumbing fixtures may be vented in accordance with pars. (a) to (d).
SPS 382.31(12)(a) (a) Wall outlet fixtures may be vented by extending an individual vent, vertical wet vent or a common vent as high as possible under the fixture enclosure and returning the vent vertically downward and connecting the vent to the fixture drain or branch drain by means of a wye pattern fitting.
SPS 382.31(12)(b) (b) Horizontal vent piping shall connect to the vertical section of the fixture vent and extend to a point where it can extend vertically to a vent terminal in accordance with sub. (16) or connect to another vent in accordance with sub. (15).
SPS 382.31(12)(c) (c) Drainage fittings shall be used on all sections of the vent pipe below the floor level and a minimum slope of 14" per foot to the drainage point shall be provided.
SPS 382.31(12)(d) (d) Cleanouts shall be provided on the vent piping in accordance with s. SPS 382.35.
SPS 382.31 Note Note: See ch. SPS 382 Appendix for further explanatory material.
SPS 382.31(13) (13)Wet venting. In lieu of providing individual vents, fixtures may be wet vented in accordance with pars. (a) to (c).
SPS 382.31(13)(a) (a) Vertical wet vents.
SPS 382.31(13)(a)1.1. Where 2 wall outlet fixtures are located on the same floor level with their fixture drains connecting to the same vertical drain pipe at different elevations, the lower fixture drain may be wet vented in accordance with subd. 1. a. to e.
SPS 382.31(13)(a)1.a. a. No other fixtures may discharge into the vertical drain pipe above or between the 2 wall outlet fixtures. Additional fixtures may discharge into the vertical drain pipe below the 2 wall outlet fixtures.
SPS 382.31(13)(a)1.b. b. A branch vent shall connect to the vertical drain pipe immediately above the higher fixture drain connection.
SPS 382.31(13)(a)1.c. c. The drain between the 2 fixtures shall be at least one pipe size larger than the upper fixture drain, but not smaller than 2" in diameter.
SPS 382.31(13)(a)1.d. d. Both fixture drains shall conform to sub. (9). The connection of the lower fixture drain to the vertical drain shall be considered as the vent connection.
SPS 382.31(13)(a)1.e. e. The higher fixture drain may not serve a water closet.
SPS 382.31 Note Note: See ch. SPS 382 Appendix for further explanatory material.
SPS 382.31(13)(b) (b) Horizontal wet vents. A drain from a lavatory or lavatories which are either provided with individual vents or a common vent may serve as the wet vent for not more than 2 bathtubs or showers and not more than 2 water closets in accordance with subds. 1. to 7. No other fixtures may discharge into or be served by the wet vent.
SPS 382.31(13)(b)1. 1. All of the fixtures shall be located in nonpublic bathroom groups.
SPS 382.31(13)(b)2. 2. The lavatories and bathtubs or showers shall have a common horizontal drain with the drain for the lavatories serving as a wet vent for the bathtubs or showers.
SPS 382.31(13)(b)3. 3. Where 2 bathtubs or showers are served by the same wet vent, their fixture drains shall connect independently to the common horizontal drain downstream of the vertical drain serving the lavatory or lavatories.
SPS 382.31(13)(b)4. 4. Where 2 bathtubs or showers and 2 water closets are served by the same wet vent a relief vent shall be provided, unless the wet vented horizontal drain connects to a drain stack with no other drain connections located above the wet-vented horizontal drain. The relief vent shall connect to the horizontal drain at a point downstream of the fixture drains for the water closets and upstream of any other fixture drain connections.
SPS 382.31(13)(b)5. 5. One or 2 water closets may connect to the common horizontal drain with the drain from the lavatories and bathtubs or showers also serving as a wet vent for the water closets. Where 2 water closets are served by the same wet vent, their fixture drains shall connect independently to the common horizontal drain at the same point.
SPS 382.31(13)(b)6. 6. The wet vent shall be at least 2" in diameter. No more than 4 drainage fixture units may discharge into a 2" diameter wet vent.
SPS 382.31(13)(b)7. 7. A branch vent shall connect immediately above the highest fixture drain connection and shall be sized in accordance with sub. (14).
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Published under authority of s. 35.93, Stats. Updated on the first day of each month. Entire code is alwaycurrent. The date shown on each chapter is the date the chapter was last published.