Safety and Buildings Plumbing Information Q&A

New June 2, 2008: Comm 82.38(3) - 6/1/08
    Where can the fire test and draindown from a standpipe discharge?

    Comm 82.41(3) - 6/1/08
    What are the cross connection control requirements for an emergency eye wash located on a hose?

    Comm 84.10(2)  - 6/1/08
    How would a health care treatment device that includes a reuse system be classified for the purposes of product or plan review requirements?

    Comm 82.40(8)(e)2 - 6/1/08
    Is there anywhere in the plumbing system where a stop and waste-type control valve may be installed underground?

    Comm 82.31(13)(b) - 6/1/08
    May only one water closet be included in a horizontal wet vent where there are two lavatories and two bathtubs or showers?

Use "find" (Control + F) to locate a key word or code section.
All attachments are PDF files. Explanation of File Formats
Link to Wisconsin Uniform Plumbing Code Online.

Code or statute reference - Date of Posting

State Stats.
145.01.10 9/25/98
Is a plumbing license required to pre-fab plumbing?  Yes, with one exception. When a plumbing system has received product approval, the piping system may be pre-fabbed by assembly workers who are not licensed individuals. Otherwise, a license is required to construct a plumbing system.

145.01.10 11/24/00
Are water lines to soda dispensers considered plumbing?  Yes, if the line carries drinking water, it's considered plumbing.

145.01.10 11/24/00
Is a license required to install pipe liners?  No. Pipe liners are considered a repair at this time.

  145.02.2 6/1/06
May a city require installation of an RP valve at the water service point of entry to the building?  Only in sewage treatment facilities, marinas, wharves, or docks, as listed in Comm 82.41(3)(c).

145.02.2 12/1/00
Can a sanitary district have more stringent requirements than the code?  Yes, in some instances. There is specific statutory authority in 200.11(3) of the statutes that allows a commissioner of a sanitary district to require preliminary treatment prior to discharging into the sanitary district's system. This is not the plumbing inspector or sewage treatment plant operator. The department will require documentation that the action will provide additional treatment over the plumbing code minimums.

145.06 6/1/06
What part of a dialysis system is considered plumbing and who can install the system?  The entire dialysis system is considered to be part of the plumbing within a health care facility. A fully-licensed plumber (apprentice, JP or MP) may install the entire system. A restricted-appliance plumber may install the plumbing from an existing pipe and through the last water treatment device. A fully-licensed plumber must install the piping from the last treatment device to the dialysis stations.

  145.11 5/10/07
What advertising requires the master plumber license number?   The law says the MP number must be on items that are Printed material designed for public distribution (PMDFPD).
Of the following, what meets this definition?
Business cards - PMDFPD, yes.  One business card on the wall of the plumbing shop and not distributed, no MP number required.
Pencils/pens with advertisement - PMDFPD, yes UNLESS the pencils are not designed for public distribution, then, no. For instance, you buy one pen for use in your office.
Yellow page ad - PMDFPD, yes.
Business page listing – The single or double-line phone book entry is a point for information transfer, not advertising.  This listing does not require the MP license number.
Paint on plumbing truck  Not printed material, not publicly distributed. No.  This advertising doesn't leave the property, it stays on the truck. 
Billboard off the business property PMDFPD, Yes the MP license is required on distributed billboards.
Business signs.  No, these signs are informational for customers to find the shop.

145.11 11/15/06
What "advertising" literature needs the MP number?  Trucks and equipment do not need to carry the MP license. Phone books (when listed as "plumbing or plumber") require the MP number. An unlicensed person advertising to clean drains and perform minor repair work may advertise under the heading of plumbing contractor, but their advertisement must delineate the type of statute-compliant work they perform.  Any advertising requires the MP number. 

  145.14 5/10/07
May Restricted Service Master Plumbers install exterior grease interceptors?  May they submit the plans for those projects?  Yes, a RSMP may install an exterior grease interceptor and they may also sign the plans for projects where they will be the responsible master.

145.14 2/6/07
When is a water supply system considered to be existing, so that a restricted appliance could install a device or appliance?  An existing water supply system exists when the fully-licensed individual (or occupant of a single family residence) has installed the piping from the meter or control valve of a pressure tank to the point past where the water treatment device is to be installed.

Administrative Code
Comm 5.07 3/8/99
What to do if one doesn't have the continuing education required for renewal.  See the attached document.

Comm 5.92.3 5/15/01
Can a journeyman write a restricted master exam?  Yes, if the 1000-hour requirement is met. See the attached petition report.

Comm 5.94.3 3/18/98
Is there a time limit to get the 1000 hours work for JPRA exam?  Yes, the 1000 hours of work required to write the JPRA exam must be completed during a continuous year. The credential must be renewed after the 2 year expiration. For renewal see Comm 5.07(2). See related petition.

Comm 81.01(38) 5/26/98
The plumbing code definition of one building.  Two buildings become one when they touch or share a roofline. Individual units separated by a "division wall" and having individual sewers or water services can become separate buildings. For more information, see the description attached.

Comm 81.01(176) (11/24/04)
What is the definition of “process piping?"  The process piping is a system that conveys process water. Process water is potable water that has been altered or modified by the addition of a product, chemical or ingredient such that it has been degraded to where it would cause a nuisance, be aesthetically objectionable, or could cause minor damage. Drinking the water would not constitute a health hazard.  For example: Water is potable to the point where the first ingredient is added to the water for brewing beer. From that point on the system is process piping.

Comm 81.01(176) 6/6/00
When is a depression in the floor considered plumbing?  When a grated trench is installed in a building it is considered a plumbing fixture and must be properly drained and disposed of as in 82.10 (8). The only exception to this is when the depression or pit is a containment device for hazardous waste.

Comm 82.01(176) 3/1/05
When is the piping within a kiosk not considered to be under the authority of Comm 82?   A kiosk that is mobile (one that has wheels) would not be considered a building and the piping inside would not be required to compy with the plumbing code.

  Comm 81.01(179) 2/6/07
Is there a definition for a storm plumbing system?  No, however storm plumbing system means piping, appliances and devices that convey, hold infiltrate, or treat storm water from building runoff.  This includes all piping connected to piping conveying runoff from buildings.  The portion of the storm plumbing system under the authority of the Wisconsin Uniform Plumbing Code is that portion conveying storm water to the municipal system or discharging to grade.

  Comm 82.20 6/1/06
Must plans be submitted for plumbing review for the piping receiving the discharge from a detention basin draining one acre or more?  When on private property, the piping is considered plumbing and plan review is required.

Comm 82.20(1) 7/22/05
Does a pressurized private interceptor main sewer plan need to be submitted for plan review?  Sometimes.  If the dfu load on the piping would require a gravity flow pipe size of greater than four inches, the plan needs to be submitted to the department or an appropriate agent city.

Comm 82.20(1) 11/18/97
Municipality can require plan review beyond code  An agent municipality can require plan review for fewer than 16 plumbing fixtures. There is no requirement for the department to see the ordinance drafted for this requirement, however an ordinance is required.

Comm 82.20(1) 3/13/98
Bed and Breakfast plumbing review requirements.  Bed and breakfasts only require plumbing plan review when new construction is involved. An existing building converted to a bed and breakfast does not require plan review if it meets the statutory definition (254.61) of bed and breakfast. A new building is considered a hotel or motel even if it's licensed as a bed and breakfast. /p>

Comm 82.20(1) 4/7/98
Replacement grease interceptor plan review  All grease interceptor installations require plan review. 

  Comm 82.20(1)  5/10/07
May a POWTS designer sign plans for an exterior grease interceptor?  No, Currently the state Department of Regulation and Licensing only permits the POWTS designer to design septic tanks for private sewage disposal systems, drain fields designed to serve such septic tanks and sewer service from the septic tank or sewer extensions from the mains to immediate inside or proposed inside foundation wall of the building.

Comm 82.20(1) (11/24/04)
Plan review requirements for multiple dwellings  See Table 82.20-2 which states "For the purposes of plan submittal, public buildings do not include zero-lot line row houses where each living unit is served by an individual water service and an individual building sewer." For clarification, these individual connections (water and sewer) are to the public sanitary sewer or public water main, or to a private interceptor main sewer and/or private water main. The building may be defined as a row house, apartment or condominium, but the individual plumbing system requirement must be met. For the interpretation of this section, the private interceptor main sewer and private water main extends to the most upstream building served. So all buildings are treated identically.
Because of their individual connections each row house would be required to have one full sized drain and vent stack.

Comm 82.20(1) 9/25/98
May pre-fab systems be assembled prior to plan approval?   Yes, if they are not installed. 82.20 (1) (a) requires that "Written approval for the plans shall be obtained prior to installation of the work."

Comm 82.20(1) 7/28/03
When is registration or plan review needed for CCC devices?
1. Plan review for testable CCC devices is required when the installation is in health care or related facilties. For all other installations, registration of testable CCC devices with the division is required.
2. When replacing an existing assembly with the exact same model number and size? NO, but on the next test report a letter from the plumber should be sent with the report stating it has been changed.
3. When replacing an existing assembly with the same ASSE # but a smaller size? NO, not when dealing with non-potable water but the letter from the plumber stating it as been changed should still be sent. When dealing with potable water, it would be up to the reviewer through a phone conversation with the submitting party.
4. When replacing an existing assembly with the same ASSE # but a larger size? NO, not when dealing with either potable or non-potable water.
5. When moving an existing assembly vertically but on the same floor? NO
6. When moving an existing assembly to a different floor? YES, always.
7. When moving an existing assembly horizontally? This is where things get a little sticky. A good rule of thumb may be to use a 10-foot diameter sphere. If the assembly is to be moved ten feet from its original location, then YES. If not, then NO. There would be some slack given even if it would be moved out of the sphere, it would be determined by a plan reviewer from a conversation with the plumber.

Comm 82.20(1) 8/10/00
Can a municipality force a homeowner to connect to public sewer & water?  Yes, by ordinance. See attached copy of statute 281.45, the enabling language.

Comm 82.20(1) 5/20/99
Plan submittal/inspection of Native American Land
See attached File

Comm 82.20(1)(b) 1/4/99
Approval for private water mains  Which water mains get approval from Commerce or DNR? This memo gives different situations describing when a water main will be approved by DNR and which ones will be approved by Commerce or a Agent Municipality. Attached.

Comm 82.20(1)(b) 10/4/05
Does the installation of a two-inch diameter pressurized private interceptor main sewer require plan review?   Sometimes.  If the pressurized private interceptor main sewer is carrying more than 250 drainage fixture units (so that a gravity flow pipe serving the same flow would be required to be greater than four inches in diameter) plan review is required.  Also, if a gravity flow private interceptor main sewer of more than four inches in diameter discharges into a sump, and then the downstream pressurized sewer must be included in the plan submittal.

Comm 82.20-1 6/1/04
Referring to Table 82.20-1, number 2., what type of buildings would be owned by a metropolitan or sanitary sewer district?  Basically this refers to treatment plants, however if the sanitary sewer districts owned other buildings those buildings would need plumbing plan submittal to Commerce (and approval) prior to construction.

Comm 82.20-2 6/1/04
Do I need to submit storm private interceptor main sewers? What is a storm private interceptor main sewer?  All piping designed to serve as a private interceptor main sewer greater than 4" in diameter (when sized for gravity) must be submitted. This includes storm. A storm private interceptor main sewer is serving the runoff or piping from two or more buildings.

Comm 82.20-2 6/1/04
Are plans required to be submitted for a building that contains a single-family dwelling and a commercial establishment?  Yes, if the fixture count of the total building includes 16 or more fixtures

  Comm 82.21(2)(a)  5/10/07
How do you know if a cross connection control device may remain in service if it is not code compliant now, but may have been code compliant when it was installed?  A cross connection control device may remain if it was code compliant at the time of installation unless the cross connection device is failing and causing a backflow incident or is being replaced.  The attached table (PDF file) has the known dates of when cross connection control devices of various types were code compliant.

Comm 82.21(3) 6/6/00
What needs replacement in existing installations?   Attached is a document that will help an inspector know what needs to be replaced if found on inspection of an existing installation.

Comm 82.30(1) 6/01/04
If showers are installed on pool decks, can the drains serving those showers be considered deck drains or must those drains be sanitary drains?   The shower drains used to wash chlorine off pool patrons should be considered as deck drains unless the showers are provided with soap and are to be used as sanitary washing facilities. If the showers are provided with soap, the drains should discharge to sanitary.

Comm 82.30(1) 6/1/04
Are floor drains sanitary fixtures?  Floor drains are sanitary fixtures, however area drain inlets are very similar to floor drains. Table 82.38-1 designates the discharge points for floor drains. Some floor drains, like those located in well pump houses may discharge to grade.

Comm 82.30(3) 2/5/02
What is the dfu value of a garage catch basin?  According to the Table 82.30-1, the drainage fixture unit value of a floor drain is 4. Since a garage catch basin is a modified floor drain, the dfu value of a garage catch basin is also 4. Regardless of the number of fixtures or trenches connected to the garage catch basin, the dfu value is 4.

Comm 82.30(3) 1/26/01
How is the dfu value calculated for a pumped discharge? Because the pumped discharge could continue for an extended length of time, the continuous flow calculation is used to calculate the dfu value for a pumped discharge. This is two gpm/dfu.

Comm 82.30(3) 8/16/98
Can a 3-inch receptor have a dfu of less than 4?  Refrigerated food case only and with an approved petition. Yes, a petition has been granted to allow a 3-inch receptor to have a dfu value of less than 4. See the report #1, report #2. Petition #88-00190-P

Comm 82.30(3) 7/28/03
Is an automatic clothes washer a wall outlet fixture? Yes. Even if the trap for the fixture drain is installed below the floor, an automatic clothes washer is considered a wall outlet fixture.

  Comm 82.30(4) (11/24/04)
Does the requirement for a minimum diameter piping of 2” underground apply to pressurized piping? 
No. (b) refers to underground gravity “drain” piping. The pipe you’re referring to is designed according to Comm 82.30(10)(b)3.a. and b.

Comm 82.30(4) 7/28/03
Can a municipality can dictate the size of a Private Interceptor Main Sewer?  A municipality can dictate the size of PIMS. The requirement must be by ordinance. The department does not need to review the ordinance.

Comm 82.30(4) 2/25/04
Can a laundry tray which is being used as a lavatory serve as the 1-dfu fixture for a wet vent?
No. If a fixture is sold as a laundry tray, the fixture unit value is 2, regardless of usage.

Comm 82.30(4) 2/25/04
Is a laundry tray a service sink for dfu value?  No. A service sink is a specific fixture that is labeled as a service sink by the manufacturer. A customer may use a laundry tray as a service sink, but that doesn't affect the fixture units.

Comm 82.30(5 ) 5/24/02
Can a building drain be installed at less than 1/8" per foot?  Not according to code language, however a petition for variance has been approved to allow the installation of a building drain at a pitch of 1/16 inch per foot. The computed velocity for a 4" and 6" building drain was in excess of the 2.0 feet per second minimum. See petition.

Comm 82.30(8)
When is a tee a heel-inlet fitting?  A tee on its back can meet the radius requirement for a floor outlet water closet discharging to a horizontal line. It is not considered a "heel inlet" fitting, as the manufacturers don't list it as a heel inlet fitting in their catalogues.

Comm 82.30(11) - 5/29/06
Does a crawl space need a floor drain is a water heater is installed in the crawl space?  No.  The code only requires the drain where a plumbing fixture is located on a “floor” which is entirely below grade.  The definition of a floor is an area on which a person stands.  Since a crawl space does not meet that definition, a floor drain is not required by code when a water heater is installed in the crawl space.  Remember, a receptor is still required for the T&P relief valve.

Comm 82.30(11) (11/24/04)
Is a petition required from Commerce if DNR has issued a variance to a well setback? Are Commerce staff and agents required to enforce the well setbacks stated in NR 811 and 812?  If DNR has issued a variance, a Commerce variance is not required. Commerce staff and agents are required to enforce well setbacks as they are referenced in the code.

Comm 82.30(11) 11/18/97
A municipality can dictate the type of saddle fittings.  A municipality can dictate the type of saddle fittings. The requirement must be by ordinance. The department is not required to review the ordinance, but the saddle is required to be approved. See 84.30.

Comm 82.31 02/22/06
Are there limitations to the installation of air admittance valves?  Yes, the attached document lists the currently-approved devices and their limitations.

Comm 82.31(3) 11/17/97
The discharge of dfu fixtures into a circuit vent.  Can three one-dfu fixtures discharge upstream of a circuit vent connection? No, the connection of more than two one-dfu fixtures to the circuited vented drain line must be downstream of the circuit vent connection. The wording is "may discharge into a horizontal drain served by a circuit vent." Therefore, only two one-dfu fixtures can be connected to the circuit vent.

Comm 82.31(3) 11/19/97
Are air admittance valves approved in Wisconsin?  The approval of specific air admittance valves is included in the Product Register. The first was effective on January 1, 2001.

Comm 82.31(4)(b)4. 6/1/04
May a floor outlet fixture vent connect to the vent stack at a point 38" above the floor in which the floor outlet fixture is located?  Yes, only wall outlet fixture vents are required to extend above the next higher floor level prior to connecting to the vent stack.

Comm 82.31(11) 7/28/03
Can a dishwsher standpipe connect to a horizontal common vent?  No. A dishwasher standpipe can not connect to a drain vented by a horizontal common vent. The code language prohibits this connection by saying ""fixture drains from two traps serving a kitchen sink with or without a dishwasher" The traps must serve a kitchen sink for the installation to include the horizontal common vent.

Comm 82.31(13) 11/17/97
Horiz wet vent - tub/shower and lav must share drain  Using the horizontal wet vent, the lavatory and tub or shower must share a common horizontal drain between their connection and the water closet connection.

  Comm 82.31(13)(b) - 4/1/08
May only one water closet be included in a horizontal wet vent where there are two lavatories and two bathtubs or showers?  Yes.  The only limitation of the horizontal wet vent is that more than two water closets may not be included on the vent.

Comm 82.31(14) 07/28/03
Calculating loads for circuit vents and relief vents  What is the dfu load when a relief and circuit vent join? The dfu load returns to the total served by both vents at that point that the two join together. For example, if there are 24 dfus on a circuit vented line, the relief vent has 24 dfus and the circuit vent has 24 dfus, there are only 24 dfus when the two connect.

  Comm 82.31(16)6/1/06
What’s required for the vent terminating through an exterior wall to be "approved by the department"?
For this section, "approved by the department" means meeting the requirements listed in the code for vent terminals and terminating a through-the-wall vent no less than five feet below a building overhang.

Comm 82.31(16)(d) and (e)  0/4/05
How far must a vent that extends through a building wall terminate below a building overhang?  The department approval will permit the vent termination a minimum of five feet below a building overhang.

Comm 82.32 11/17/97
Do material changes require re-submittal of plans?  Sometimes. When the materials are changing to a more restrictive material, like from Type L copper to PEX, a revision will be necessary. If you are replacing type K with type L (and all installation requirements are met) a revision may not be necessary. If a conventional installation is replaced with a "home run" system, yes.

Comm 82.32(3)(a) 2/25/04
May a garbage disposal be installed on a breakroom sink?
Yes. There are no requirements prohibiting the installation of a garbage disposal on a breakroom sink.

Comm 82.33(7) 8/8/01
Topic What is the air gap separation distance in a drain system?
The code compliant separation distance is stated in 82.33 (7). For piping of one-inch or less in diameter, the air gap is twice the diameter of the indirect waste piping. For piping greater than one-inch in diameter the code compliant separation is 2 inches.

Comm 82.33(8) 3/13/98
Sizing for local wastes serving T&P valves
How do you size a local waste serving T&P relief valves? The receptor size dictates the dfu value for sizing the local waste piping. Comm Table 82.30-1 is used for sizing the piping based on the dfu value.

Comm 82.33(8) 3/13/98
Denied petition for lavatory drain tailpiece
A petition was denied on 7/17/92 for a local waste piping serving as a receptor for condensate waste to discharge to a lavatory drain by means of a branch tailpiece. Petitioners statements included that no other place existed to discharge the condensate, that the air conditioner was located about 10 feet from the bathroom area and that these units are used only 2 to 3 months per year. Connecting the condensate to the trap is logical because the trap is always being used. The petition was denied because the intent of the code could not be met.

Comm 82.33(8) 7/28/03
Where is the air-gap when using a funnel receptor?
When a funnel is used in connection with a floor drain grate, the air-gap for the indirect waste is measured as the distance between the end of the direct waste pipe and the rim of the funnel.

Comm 82.33(8 ) 7/28/03
May an ice machine discharge into a branch tailpiece?
A branch tailpiece serving a sink is not an approved receptor for the discharge from an ice machine. A petition for variance was approved for the installation. See attached.

Comm 82.33(9) April 9, 2004
Is a floor drain required in an elevator pit?
The Wisconsin plumbing code does not require the installation of a drain in the elevator pit, but the ASME standard A17.1-96 does. The rule requiring the drain can be found in Rule 106.1b (3).

Comm 82.33(9) 7/28/03
Must an eye wash discharge to sanitary?
No. An emergency eye wash may discharge to the sanitary drain system or the chemical waste system. If the eye wash discharges to the chemical system, it need not be considered for sizing the dilution or neutralizing basin. See 82.33(1), dated 12/23/03, for more information.

Comm 82.33(9) 2/27/01
Does the drain receiving elevator drain discharge require a vent?
No. The elevator drain discharge is considered stormwater. Only clearwater interior drains require venting.

  Comm 82.33(9)(g) 10/4/05
Must a sink in a refrigerated food storage room discharge through an indirect waste to the drainage system?
Yes.  The code states that “Drains serving refrigerated food storage rooms, compartments or display cases shall discharge to the sanitary drain system through indirect waste piping.”

Comm 82.34(3) 7/28/03
Where should kennel wastes discharge?
Interior wastes shall discharge to sanitary and exterior wastes may discharge to surface. No special catch basin is required. Kennel wastes may discharge to surface if the drain doesn't discharge to a drainage ditch or waterway and the drain doesn't discharge to high groundwater area. The groundwater designation is dependent on soil texture, structure and depth to creviced bedrock. For more information contact DNR, 608-266-7715. See attached.

  Comm 82.34(4) (7/22/05)  When hose bibbs are installed in a garage and the wastewater is discharged to a drain, is a catch basin required?
If the garage is intended to be used as a vehicle wash, a garage catch basin or car wash interceptor would be required.

  Comm 82.32(4)(b) 6/1/06
Is a pedestal pedicure spa considered a pedestal fixture?
Yes. A pedestal pedicure spa may be installed in accordance with the pedestal fixture requirement for vertical distance from the fixture outlet to the trap.

  Comm 82.33(9)(c)1  6/1/06
May a 1.5-inch receptor for a residential clothes washer be increased in diameter above the trap inlet in order to terminate less than 32 inches above the floor?
No. The entire standpipe must be two inches in diameter in order for the receptor to terminate less than 32 inches above the floor.  A two inches diameter standpipe that terminates between 26 inches and 48 inches above the floor must have a two-inch trap and fixture drain installed downstream of the standpipe.

  Comm 82.34(3) 7/28/03
Where should kennel wastes discharge?
Shampooing or bathing of animals:
To POWTS, if designed for discharge 
To Sanitary sewer (Pretreatment - filter to remove hair)

Interior kennel area floor drains(sediment bucket or catch basin):
To POWTS, if designed for discharge (Pretreatment - filter to remove hair)
To a DNR-approved rain garden (Pretreatment - filter to remove hair)
To a Sanitary sewer (Pretreatment - filter to remove hair)

Exterior kennel area floor drains(sediment bucket or catch basin):
To Grade
To Sanitary sewer or POWTS only where permitted by local authority and kennel is covered.

For more information, contact DNR, 608-266-7715.

Comm 82.34(4) 4/2/04
May a single trench drain be installed to serve several rooms?
No, trench drains (or any other type of fixture) must be located so that the fixture is easily accessible for cleaning, meets the trap-compartment requirements and complies with the basic plumbing requirements. Since trench drains are required to connect individually to the catch basin with a return bend, unless they're designed as floor drains with individual traps, S&B considers it hazardous to run trenches through walls.

Comm 82.34(4) 11/19/97
Exterior grease interceptor approval requirements
Pre-fab exterior grease interceptors require product approval.

  Comm 82.34(5) 5/10/07
If a three-compartment sink has food waste grinders installed on two of the compartments and the third compartment is a sanitizing compartment, may the entire sink bypass the grease interceptor?
No.  The code specifically allows the discharge from a food waste grinder, the discharge from a sanitizing compartment or both the option of bypassing a grease interceptor, not two food waste grinders in one three-compartment sink.

Comm 82.34(5) 7/28/03
Are there circumstances where grease interceptors do not need to be installed?
Under conditions where grease will not be significantly generated, the department may allow a designer to install fixtures without a grease interceptor. See the attached letter for an example of the department's correspondence.

Comm 82.34(5) 4/4/01
What are plumbing requirements for bed and breakfasts?
Plan review is required for bed and breakfasts when the number of fixtures exceeds the plan review requirement for public buildings. Three or more tenants requires pressure balance shower valves. Less than 9 rooms is considered to produce insignificant grease and will not be required to discharge kitchen wastes through a grease interceptor.

Comm 82.34(5 ) 6/29/01
Is a grease interceptor required for an "auto fry"?
An auto fry is defined as an enclosed, ventless, self contained individual-serving deep fryer. A grease interceptor is not required where only one auto fry is installed.

Comm 82.34(5) 7/30/01
Where are grease interceptors required?
Day Care: Licensed for more than 9 children.
Restaurants: Only exception is when food is served on paper plates and spatula is only utensil for frying food.
Elderly housing: Main kitchen. Community room if more than one-compartment sink is installed.
Church: Two compartment sink or larger.
Fire Stations: Nine or more station employees requires grease interceptor. Break rooms: When more than 2 compartment sink is installed and more than a stove and dishwasher.
Camp: Same as church. More than two compartment requires interceptor. CBRF: 9 or more residents requires interceptor.
Town Hall: Two or more compartments requires grease interceptor.
Fast food: Pizza machine = No, hot dog machine = No, Meat slicer = Yes, Presliced meats = No, Meatball, chicken bar-b-que, soups = Yes.
Grocery store meat department: Requires interceptor.
Bakery: requires grease interceptor.
Schools: Home Economics room=No. Main kitchen = Yes.
Prison: Same as school.
Custard, ice cream stand: No grease interceptor required for only ice cream or custard.

Comm 82.34(8) (11/24/04)
Can the runoff from an area under a fueling canopy be discharged to the sanitary sewer if the remainder of the site is discharged to the storm?
Yes, however an oil and flammable liquids separator is required to serve the discharge from under the canopy.

Comm 82.34(11) (11/24/04)
Is a variance required for a meat processing plant discharge to bypass an interceptor if the DNR has issued a WPDES permit to land spread the waste including the blood and other byproducts?
No. Since the code states the reason for the requirement, i.e. “to prevent the discharge of feathers, entrails, blood and other materials” and the waste is not being “discharged,” but is being collected and land spread, a variance would not be required in this instance.

  Comm 82.35(3)  (7/22/05) 
Can the opening created by removing a water closet serve as a cleanout for a branch on two floor levels?
Yes, the water closet opening can serve as a cleanout for the branch until the branch connects with another branch to create a main.

Comm 82.35(3) (7/22/05) 
Are cleanouts required to serve pump discharge or pressurized sewer piping?
No. Cleanouts are not required.  See 82.35 (1) where the scope of the subchapter is “the installation of cleanouts and manholes for all drain piping.”

Comm 82.35(3) 11/18/97
A municipality can require sampling manholes.
A municipality can require installation of sampling manholes. The requirement must be by ordinance. The department is not required to review the ordinance.

Comm 82.35(3) 6/6/00
Where are cleanouts required on drains and sewers?
Are the risers included in the measurements between cleanouts on building sewers and drainage piping inside a building? No. The measurements are taken horizontally between cleanouts.

Comm 82.35(3) 6/6/00
Where are cleanouts required on circuit vented lines?
The attached drawings show the required installation of cleanouts on circuit vented lines.

Comm 82.35(3) 6/6/00
When is a manhole a cleanout?
Terminology can be confusing as to when a manhole, catch basin, area drain inlet, etc can be used as a cleanout. The attached drawings will help the inspector or plan reviewer evaluate an installation.

Comm 82.35(3) 7/28/03
Can a roof drain serve as a cleanout?
Yes. A roof drain can serve as a cleanout for horizontal piping below the floor.

Comm 82.35(3) 6/6/00
Can you use a water closet for a cleanout?
Can a water closet be used as a cleanout at the junction of the building drain and building sewer? No. The only cleanout requirement where a removable fixture trap can replace a cleanout is the "branches" requirement.

Comm 82.35(3) 7/28/03
When are cleanouts required for sewer offsets?
The installation of an 8" or larger sanitary sewer requires additional manholes at every change in direction of 45 degrees or more. The installation of two 1/16 bend fittings with piping between is not considered to be a change in direction of 45 degrees or more. An installation of street fittings to create a fitting are to be considered one fitting. Storm sewers 12 inches or larger in diameter are required to comply with this requirement. However, storm inlets with an inside diameter of at least 36 inches can serve the purpose of a manhole. Private interceptor main sewers 6 inches or larger in diameter are required to include a manhole at every change of direction. This change of direction is not specific to any offset measurement.

Comm 82.35(3) 11/19/02
Is a manhole required for a vertical change of direction?
No. The code's intent is to have the manhole and cleanout requirements for sewers and private interceptor main sewers apply to horizontal changes in direction, not changes in elevation. This applies to the requirements in 82.35 where cleanouts, manholes or storm inlets are required for changes in direction of 45 degrees or more and also where the code requires for a manhole where there is a change of direction.

  Comm 82.35(3)(d)   2/6/07
May a cleanout for a private interceptor main sewer be located inside one of the buildings?
No, the cleanout for a private interceptor main sewer is required to be an “exterior” cleanout.

Comm 82.36(3) and Comm 60.30 8/7/07
What does the department require for the thickness of a subsurface stormwater detention system or detention basin liner?
There are three options that the department deems acceptable for a subsurfqace stormwater dentention system or detention basin liner:
    1.  Clay liner
    2.  High Density Polyethylene Liner (HDPE)
    3.  Polyethylene Pond Liner (PPL)
The specifications for the liners are here, PDF file.

Comm 82.36(8) 3/16/04
If a foundation drain and accompanying sump pit are installed, must the pump also be installed at that time?
There are two conditions that require the pump to be installed at the time the foundation drain and sump is installed: 1. Natural conditions that would create a need for the pump and, 2. A municipality that requires the installation of a pump at the time of sump installation.  See the Uniform Dwelling Code, Comm 21-25, for more information.

  Comm 82.36(13)  (7/22/05) 
What does a stormwater system operation and maintenance (O&M) plan look like?
No two O&M plans are identical, as all O&M plans are specific to the installation.  One typical statement contained in an O&M plan might be that inlets should be inspected twice a year and debris removed.  Another might say, no standing water should be permitted in the system to prevent mosquito larvae habitat.  Any defects in the pavement or grass areas that allow standing water for more than 48 hours will be repaired.

  Comm 82.38 6/1/06
Where may decorative fountain drains and fountain overflow drains discharge?
Decorative fountain drains may discharge to the storm system.  They may also discharge to grade where no nuisance is created, and where not prohibited by local government or the Department of Natural Resources.  Fountains located inside buildings may also discharge to the sanitary system if the discharge does not exceed 50 gallons per day.

Comm 82.38 11/19/97
Fixtures discharge to surface or drain subsurface.
Most fixtures and wastewater discharge points are listed in Table 82.38. Holy water uses are not listed and the department allows discharge of holy water via piping systems to grade, subsurface, sanitary systems or storm drains.

Comm 82.38 8/06/03
Where can greenhouse wastewater discharge?  Final decision for discharge to storm or sanitary will be given by DNR. Interior clearwater piping shall be trapped, vented, and installed by a licensed individual.

Comm 82.38 11/24/00
Where should a zambonie discharge?  Either storm or sanitary. If ice is to be melted and discharged through the interceptor, to storm. If the catch basin is to be used for other purposes, the discharge should be to sanitary.

Comm 82.38(3) 12/23/03
What are the allowable discharge points for a loading dock?  A loading dock is treated as a parking lot. Enclosed loading dock discharge points comply with Table 82.38-1 #6. Open loading dock discharge is considered stormwater and would be discharged as permitted in Table 82.38-1 #10.

Comm 82.38(3) 12/23/03
What's the definition of "open parking lot"?  The plumbing code is using the building code definition of "open" for parking lots. Requirements for openings are located in 406.3.3.1 of the Wisconsin Enrolled Commercial Building Code.

Comm 82.38-1 6/1/04
Row number 8 allows a municipal well pump house floor drain and sink to discharge to grade, unless prohibited by local municipality and where no nuisance is created. Would an emergency shower in this facility and a chlorine storage floor drain in this facility also be allowed to discharge to grade?  Yes. The fixtures located in this facility that are listed in this question may also discharge to grade.

  Comm 82.38(3) 4/1/08
Where can the fire test and draindown from a standpipe discharge?  Water discharged during a fire test is considered clear water unless there are chemical additives and it may discharge as row 10 in Table 82.38-1 allows.  This includes a provate oniste wastewater treatment system that’s designed to receive the discharge, municipal sanitary sewer, municipal storm sewer, ground surface (unless prohibited by local and when no nuisance is created) or subsurface dispersal (which would require plan review and approval for a commercial building).

Comm 82.40(2) 11/17/97
Can 5/8" PEX carry more than two fixtures?  Yes, as long as the wsfu fits the sizing chart for that material.

Comm 82.40(3) 02/5/02
Is tempered water required for emergency fixtures?  Tempered water to emergency fixtures is not required by the plumbing code. An OSHA consultant may require the installation of tempered water because the standard for emergency fixtures refers to tempered water.

Comm 82.40(4) 11/19/97
Requirement for building control valves.  See diagram attached. There must be one building control valve that is located within 3 feet from the point where the water service enters the interior building (either where it penetrates the floor or wall). This means one building control valve.

  Comm 82.40(5) 5/10/07
When are water heaters required to be set at 125 degrees?  Manufacturers are required, by statute, to be set water heaters at 125 degrees Fahrenheit when they are sold for individual use in a dwelling unit in Wisconsin.  See 134.81, Stats.

Landlords who rent for residential tenancy must set the thermostat of the water heater that serves that individual tenancy at 125 degrees or at the minimum setting of the water heater.  See 704.06, Stats. Water heater thermostat settings. A landlord of premises which are subject to a residential tenancy and served by a water heater serving only that premises shall set the thermostat of that water heater at no higher than 125 degrees Fahrenheit before any new tenant occupies that premises or at the minimum setting of that water heater if the minimum setting is higher than 125 degrees Fahrenheit.
There are no requirements for residential water heater temperatures in the plumbing code.

Comm 82.40(5) 5/29/06
Can a T&P relief valve discharge to a floor that doesn’t have a floor drain?  No, an approved receptor would be required if there is no floor drain.

Comm 82.40(5) 5/29/06
Does an existing water heater replacement require that the installer update the receptor for the T&P relief valve to current code compliance?  No, not unless a health hazard is created by leaving the existing installation

Comm 82.40(5) 11/17/97
Required pressure for a T&P relief valve  What pressure rating is required for a T&P relief valve? The T&P relief valve pressure rating may not be higher than the tank working pressure rating.

Comm 82.40(5) 8/06/03
T&P relief discharge in replacement projects  Can the T&P relief discharge through the floor in a replacement installation? Replacement may be the same as original installation. No changes are necessary.

Comm 82.40(5) 8/6/98
T&P valve sizing local waste  The drawings in the appendix illustrate local waste installations. Plumbing will use the receptor dfu values to size the local waste.

Comm 82.40(5) 12/11/98
How are drain pans used as T&P valve receptors installed?  Pans placed under water heaters in case of drips are not considered plumbing and should not be connected to the plumbing system. If a water heater T&P relief valve discharges into this pan, it is now considered a receptor and installed accordingly.

Comm 82.40(5) 5/2/00
Is insulation required for all recirculation systems?  No, not when the recirculation system is used to heat the home in emergency situations and is activated by a thermostat or when the recirculation is not a continuous system, but activated by demand.

Comm 82.40(7) 11/17/97
Velocity restrictions in mobile home park  Can a water supply system to a mobile home park exceed 8 feet per second? Yes, because the code doesn't restrict velocity in a supply system except in the water distribution system. (Watch manufacturer's requirements.)

Comm 82.40(7) 11/19/97
Turf sprinkler in water calculations  Is the demand for the turf sprinkler required to be included on the water calc worksheet? No.

Comm 82.40(7) 9/1/00
What needs to be added to the demand to size a multipurpose piping system?  On a single family dwelling, none. On a duplex, 5 gpm to the service. The calculations are performed per NFPA 13D and per Comm 82.40 (7). Whichever causes the larger piping system is the controlling water sizing.

Comm 82.40(7) 9/1/00
What gpm are required for emergency fixtures?  Unless further information is provided by the designer of the system, the following gpm rates may be applied to sizing calculations: Eye wash - .4 gpm, Face wash - 3 gpm; Drench hose - 3 gpm; Drench shower - 20 gpm.

Comm 82.40(7) 4/4/01
Tempered water and water supply fixture units.  What are the water supply fixture units that can be calculated when designing a water distribution system using tempering valves? The total water supply fixture units for a fixture are used in the calculations downstream and upstream of the tempering valve.

Comm 82.40(7) 1/2/03
What pressure is required for emergency fixtures?  An emergency fixture requires 30 psig. This minimum pressure is used in the water calculation worksheet if an emergency fixture is included in the water distribution system.

Comm 82.40(7) 1/2/03
What flow is required for combination emergency fixtures?  The demand for each of the units in a combination emergency fixture unit must be combined in the water sizing for a distribution system that includes combination emergency fixtures, such as combination eye wash and emergency shower. For example, the eye wash demand is .4 gpm and the shower demand is 20 gpm so the combination fixture has a demand of 20.4 gpm.

Comm 82.40(7) 2/5/02
How many emergency fixtures must be included in the water sizing?  If there are multiple emergency fixtures located in building or facility, the designer and owner must make the decision as to how many emergency fixtures could be used simultaneously. The water sizing should be completed based on that decision. The plumbing review would include at least one emergency fixture included in the gpm demand of the system.

Comm 82.40(7) 2/5/02
May fire residual pressure be used for water system sizing?  No The plumbing code requires that the minimum pressure in the street be used for water distribution sizing calculations. In most cases, a municipality will provide a static pressure and a normal residual operating pressure. The normal residual pressure is the pressure that is appropriate to use in the water distribution sizing.

Comm 82.40(8) - 11/17/97
Internal bypass valve application  Can an integral bypass serve a softener or iron filter? Most of the time. The filter or softener must be able to be removed for service and the valve remaining on the system.

Comm 82.40(8) - 4/20/98
When does a replacement wall hydrant need to meet code?  When replacing a hose bibb, it's only necessary to bring the replacement to the requirements in Comm 82.40(8)(a), when you're cutting the pipe or disconnecting the hydrant inside the building. Cross connection control is required to be applied to the hose connection.

  Comm 82.40(8)(e)2 - 4/1/08
Is there anywhere in the plumbing system where a stop and waste-type control valve may be installed underground?  There is no definition for a control valve in the code or statute, so the interpretation of where a stop and waste-type control valve may be installed is based on the probability of incidence and the historical precedence of the plumbing trade.  One installation of below-ground bleed type devices has been for fire hydrants which are emergency fixtures and have less of a probability of groundwater impact or serving as a drinking water source for the public.  Similarly, a large diameter hydrant (2" or greater outlet) that serves a wastewater treatment plant on the protected non-potable distribution piping has the same low probability for serving as a public drinking water source or increasing the risk of contamination near the wastewater treatment plant.

  Comm 82.41 - 5/10/07
Backflow protection for pressure washers (without break tanks including air gaps)  Pressure washers may be hard piped or connected with a garden hose to the water supply system.  ALL pressure washers installed permanently must be connected to the water distribution system with approved water distribution materials (see chapter 84.30).  Following is an explanation of the minimum acceptable backflow protection.  Portable Pressure Washer - Hose connection vacuum breaker or backflow preventer (ASSE 1011 or 1052) connected to hose bibb serving washer. (Non-continuous use, not permanently connected to the water supply).  Permanently installed  pressure washer - RP (ASSE 1013) installed in water supply.

  Comm 82.41 May 10, 2007
Booster Pumps and backflow protection  Booster pumps are generally hard piped to the water supply and then use a hose at the outlet end of the pump.  ALL booster pumps installed permanently must be connected to the water distribution system with approved water distribution materials (see chapter 84.30).  Booster pumps must be provided with an automatic low pressure cut-off switch to protect the booster pump in the case of loss of supply pressure when the booster pump is serving plumbing fixtures, appliances or pieces of equipment.  All booster pump installations must take into account the pump’s affect on the plumbing water distribution system.  Following are acceptable backflow protection options for booster pump installations:  Inlet side of booster pump (continuous use) -
RP (ASSE 1013) installed in water supply.  Outlet side of  booster pump - > 150 to 350 psig.  RP (ASSE 1013) installed in the water distribution system downstream of the pump.  In this case the pump materials in contact with the water must be water distribution approved materials. - > 350 psig  There are no backflow preventers manufactured to withstand these pressures at this time.

Comm 82.41 9/26/03
Are there requirements for installing the "Strahman" steam/water mixing valves?   Yes, see this memo for more information, PDF file, Word 97 file.

  Comm 82.41(3) 4/1/08
What are the cross connection control requirements for an emergency eye wash located on a hose?  If the emergency eye wash can be submerged in a sink, a low hazard cross connection control device would be required to serve the eye wash.  This determination is based on the probability of incidence.
If the emergency eye wash is located where it is not likely to be submerged in wastewater (stand alone system) then no cross connection control device is required.

Comm 82.41(3) (11/24/04)
When does cross connection control need to be modified to be code compliant when remodeling or repairing a plumbing system?  If the piping system is being cut to remove or repair the backflow prevention device or assembly the cross connection control must be made code compliant to the code in effect at the time of the repair. If a union is installed that would allow removal of the device or assembly without cutting the piping system, the existing device or assembly may be returned to service.

Comm 82.41(3) 3/2/99
How is CCC installed on a carbonator?  See the attached illustration for one type. See part two for another situation.

Comm 82.41(3) 5/2/00
Can a chiller water supply also serve fire protection?  Yes. However, backflow protection must be installed to serve the degree of hazard that is caused by the installation, as always.

Comm 82.41(3) 8/1/00
Can a whirlpool and a pool be served by a single rp valve?  No. Each pool, wading pool or whirlpool must be served by separate reduced pressure backflow prevention valves or air gaps. A pool may be filled by a hydrant that has a hose connection backflow preventer attached.

Comm 82.41(3) 8/06/03
What backflow protection is required on a dental mold grinder?  The dental mold grinder requires either an internal air gap in the device or a device that provides protection in accordance with Comm Tables 82.41-1 and 82.41.2.

Comm 82.41(3) 5/15/01
Do all fixtures in a mortuary need separate cross connection control?  Yes. The Department of Regulation and Licensing requires that all fixtures be installed in mortuaries with individual cross connection control. Examples could be embalming machines and aspirators.

Comm 82.41(3) 10/19/0
Can a city require additional cross connection control? Is it in compliance with Chapter 145, stats., if a city adopts an ordinance that requires containment in buildings other than those described in Comm 82.41(3) (c), Wis. Adm. Code (sewerage treatment facilities or marinas, wharves and docks)?
No. At this time there are no provisions in the code or statutes that would permit local ordinances that supercede the uniform plumbing code requirements for containment. Section 145.02 (2) states that "The department shall have general supervision of all such plumbing and shall after public hearing prescribe, publish and enforce reasonable standards therefore which shall be uniform and of statewide concern so far as practicable." The definition of "practicable" is "capable of being effected, done or executed; feasible." In several cases the plumbing code has specific allowances for cities to adopt ordinances or enforce requirements in excess of the plumbing code. Comm 82.41(3) has no such permission.

Comm 82.41(3) 5/2/00
Variance permitted monitoring water supply in lieu of CCC.
Petition for variance attached. Conditions noted on sample letter.

Comm 82.41(3) 8/8/01
Can a fire truck fill be located in a fire protection system?  Yes. A fire truck fill in a fire department may be located in a fire protection system. This decision was made by the fire protection program. The backflow protection assigned to the sprinkler system will be considered adequate for the fire truck fill.

Comm 82.41(3) 1/2/03
Is a non-reservoir type hydrant permitted?  Yes, for existing installations. Hydrants will not be required to be removed if the water supply to the hydrant is protected with a cross connection control device such as an ASSE 1012 and a hose connection vacuum breaker. New installations require the installation of a reservoir type hydrant.

Comm 82.41(3 ) 1/2/03
Does a pipe that travels through a fountain require a CCC device?  A water supply that travels through a contaminated area is not automatically required to have a cross connection control device installed to serve that distribution line, if the termination of the water supply is above the flood level rim of the fountain and if the water distribution material is resistant to corrosion. See Comm 84.30(4).

Comm 82.41(3)(c) 2/25/04
Is it code-compliant for one cross connection control device or assembly to serve multiple humidifiers?  No. However, an air gap within a humidifier may provide adequate backflow protection.

  Comm 82.41(4)(a) 6/1/06
May a small diameter tube from a chemical dispenser be inserted into a flush valve tube so as that the end of the small tube would be the highest point of injection or aspiration?  No. The point of penetration into the flush valve tube is considered the point of aspiration.

Comm 82.41(4) (7/22/05) 
At what level must a pipe applied atmospheric vacuum breaker be installed when an aspiration device is located downstream of the vacuum breaker?  The pipe applied atmospheric vacuum breaker must be installed so that the critical level indicator is at least 6 inches above the connection of the aspiration or injection device.

Comm 82.41(4) 10/23/98
Atmospheric vacuum breakers above urinals.  The atmospheric vacuum breaker is required to be installed on water distribution serving urinals. The minimum height of the atmospheric vacuum breaker is 6 inches above the flood level rim of the urinal bowl (for wall mount) and the floor level (for stall type).

Comm 82.41(5)(h) 2/25/04
What kind of "wild head" is permitted downstream of an atmospheric vacuum breaker serving a turf sprinkler system?  The wild head must be sold as a turf sprinkler or a hole may be drilled in a pipe to serve as a wild head when the orifice is as large as a turf sprinkler orifice. The sprinkler may not include an automatic shut off.

  Comm 82.50(2) 7/10/2006
May psychiatric units have faucets installed that are equipped with spouts and actions other than those listed in the code section or Table 82.50-1?  Yes, there are other options for environmental suicide prevention approved via the attached alternate approval.

Comm 82.50(3) 11/14/03
Article in WCCR concerning hot water distribution systems in health care.

Comm 82.50(12) 11/19/02
Is a 5-inch spout height required for public lavatories?  No. The public restroom may have standard lavatory faucets. Only those faucets listed in Table 82.50-1 that require the gooseneck spouts must have the 5-inch clearance.

Comm 82.60(2) 4/26/02
What are the requirements for no-hub hangers?  No-hub pipe needs to be supported within 24 inches on each side of a joint unless there's an alignment retaining shield. An alignment retaining shield includes a no-hub coupling. Otherwise, cast iron pipe needs to be supported every length of pipe, horizontally, and every 15 feet vertically. As of 3/4/02, the Tyler Pipe company requires that their pipe be installed with supports as required in the CISPI standard. See attached letter.

Comm 82.70(3) 2/25/04
Does a laundry reuse plumbing treatment system need to comply with Table 82.70?  Yes, the recycled water serving the laundry must comply with Table 82.70. This does not apply to residential suds savers, as a suds saver is not a plumbing treatment system.

  Comm 84.10(1) 10/4/05
May air admittance valves be installed to serve chemical waste systems?   No.  If chemical resistant piping is installed to serve a fixture, an air admittance valve is not permitted as a vent termination.

  Comm 84.10(2) 4/1/08
How would a health care treatment device that includes a reuse system be classified for the purposes of product or plan review requirements?  Devices or systems that incorporate hydrotherapy for health care and a water reuse system are classified as health care plumbing appliances.  All health care plumbing appliances are required to be submitted for product approval as listed in Table 84.10.

  Comm 84.11 7/2/07   
Do all chemical dispensing systems require to be listed by an acceptable listing agency as meeting ASSE Standard 1055 or receive a written product approval from Dept. of Commerce?  No.  There are currently three ways to determine if a specific chemical dispensing system can be installed in Wisconsin.
1) It meets ASSE Standard 1055(1)
2) It has received written alternate product approval from the department, or
3) It has received written alternate system approval from the department.
Note (1)  ASSE Standard 1055 only applies to those devices classified as chemical dispensing systems having self-contained means of backflow protection.

Since there are many chemical dispensing systems that do not have a self-contained means of backflow protection, the department decided to require that type of chemical dispensing system to receive an alternate plumbing product approval in accordance with Comm. 84.11 and Comm. Table 82.41-2.

The Department has issued an Alternate Plumbing System Approval regarding chemical dispensing systems that are not covered by ASSE Standard 1055.

The alternate approval includes the following stipulations that must be followed.

Stipulation #1 – Chemical dispensing systems that are not in compliant with ASSE Standard 1055, may be installed when the installation includes an acceptable cross connection method or assembly in accordance with Comm. 82.41 (3) Table 82.41-1 of the Wisconsin Administrative Code.

Stipulation #2 - The installation of the cross connection method or assembly must comply with s. Comm. 82.41 (5) of the Wisconsin Administrative Code.

Comm 84.30(4) 11/18/97
A municipality can dictate materials upstream of the lot line.  The requirement must be by ordinance. The department must review the ordinance.

Comm 84.30(4) 6/6/00
Is piping in a marina water distribution or service?  The materials downstream of an reduced pressure backflow prevention valve are water service materials. The velocity would not be required to be maintained at 8 fps. Where the installation is downstream of a building control valve, the code requires the water distribution

Comm 84.30(4) 8/8/00
Do pipe repair kits need product approval?  No. See attached letter on the requirements they must meet.

  Comm 84.30(4)(e)310/4/05
May a lavatory be served by a distribution system of materials listed in Table 84.30-11?  No, not unless the materials are listed in 84.30-8 or have received an alternate approval.  <>84.20 (3) (a) 2 allows lavatory faucets to discharge up to three g.p.m., and materials listed in Table 84.30-11 are restricted to fixture outlets of one g.p.m. or less.

Comm 84.30(5) 6/9/99
When can you use pipe saddles?  See attached document.

  Comm 84.30(5)(d) 5/10/05
How does one get approval for using pipe saddles for other uses then those specified in Comm 84.30(5)(d)?  When an installation is proposed for using pipe saddles for above ground drain or vent pipe and tubing, the following conditions must be met: Pipe saddles shall be installed in accordance with the instructions of the saddle manufacturer. A saddle for drain piping shall have a radius in accordance with Comm 82.30(8)(a). The material of the saddle shall be compatible with the materials of the pipes that are to be connected to the saddle. The hole in the pipe, which is to receive the saddle, shall be drilled or cored to match the saddle outlet. The manufacturer of the saddle shall provide straps or clamps, which wrap around the pipe and saddle. Proper hangers or bedding shall be provided to maintain alignment between the opening in the pipe and the saddle. A saddle used in a pressurized piping system shall meet the applicable code requirements for temperature and pressure ratings. This determination is considered department approval. 

Links -- County Web sites || City/Town/Village Web sites || State Portal || Licensing and Permitting || Build Your Business

Email this page's manager, Todd Taylor, ttaylor@commerce.state.wi.us or 608-267-3606

The Department of Commerce Safety and Buildings Division is an equal opportunity service provider and employer. If you need assistance to access services or need material in an alternate format, please contact us, 608-266-3151, TTY 608-264-8777, or ttaylor@commerce.state.wi.us