Plumbing Service Options Worksheet

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					                             City of Wheaton Building and Code Enforcement



                            WATER SERVICE LINE - SIZING
 TO CALCULATE SIZE OF WATER SERVICE LINE
 The water service supply line delivers potable water to your home from the city water main. The
 water service line for a residential home is typically a ¾” to 1” pipe that can be seen entering your
 building near the water meter. If you are proposing to add plumbing fixtures such as a new shower,
 new sink, new toilet or similar, it is required by the Illinois Plumbing Code that the water service
 supply line is large enough to accommodate the capacity of water that is demanded from all of your
 plumbing fixtures combined as established in TABLE N (Flush Tank) or TABLE O (Flushometer)
 of the Illinois Plumbing Code. At an existing residence several conditions can affect the capacity of
 the water service line including pipe size, length of water service line and condition of the pipe. To
 determine if the existing water service supply line is adequately sized you will need three pieces of
 information:

1.   TABLE A - Water Service Line-Sizing Worksheet – is attached and allows you to calculate
     the number of existing and proposed plumbing fixtures within your home as well as any
     possible future plumbing fixtures. For each fixture there is a corresponding Water Supply
     Fixture Unit (WSFU). The worksheet will allow you to calculate the total WSFU’s by
     multiplying in each row the number of fixtures by the WSFU’s and then adding all the WSFU’s
     in the right hand column. The total will then be compared to TABLE N or TABLE O.

2.   TABLE N or TABLE O which is also attached is from the Illinois Plumbing Code and
     identifies the minimum water service line or “pipe size” (third column) based on the total
     number of WSFU’s calculated from TABLE A. Please Note: TABLE N should be referenced if
     toilets are tank type and TABLE O should be referenced if toilets are flushometer type.

3.   PIPE SIZE of the existing water service line to your home is best determined by measuring the
     pipe where it enters the building. You may also call the Wheaton Water Division at 630-260-
     2090, who may be able to confirm the size of the existing water service line.

 If the proposed addition of plumbing fixtures to an existing residence results in more fixtures than
 supported by the water service as determined by TABLE N/O the capacity of the water service line
 is undersized and does not comply with Illinois Code. Please forward TABLE A to the Wheaton
 Building Department and staff will forward to the Water Division to confirm if the existing water
 service line is in compliance with Illinois Code.


OPTIONS IF WATER SERVICE LINE IS UNDERSIZED

Option 1 – Replacement. If the proposed addition of plumbing fixtures to an existing residence
results in more fixtures than supported by the water service line, the line shall be replaced from the
City water main to the meter. Prior to commencing the installation of any new, repair or
replacement of any existing water service line a permit is required to be issued by the Wheaton
Building Department, see handout titled Water Service Line – New, Repair, Disconnect”; or

Option 2 – Pressure Test. If the proposed addition of plumbing fixtures to an existing residence
results in more fixtures than supported by the water service line the capacity of the water service line
can be evaluated by an alternate method and that is by having your plumber perform a pressure test.
The pressure test may have been stipulated when the Building Department issued the building permit
                         CITY OF WHEATON BUILDING AND CODE ENFORCEMENT
                                          Water Service Line - Sizing


to you. Section 890.1210c of the Plumbing Code requires a minimum constant water pressure on the
discharge side of the water meter to be at least 20 p.s.i. The water distribution system must be
adequately sized to provide a minimum constant water pressure at each fixture of at least 8 p.s.i. The
pressure test is conducted after installation of the additional fixtures, and must be conducted by a
registered plumbing contractor and witnessed by the City’s registered plumbing inspector.

The pressure test shall be conducted as follows:

    1. Notify the Building Department at least one day in advance that you will be performing a
       pressure test with your Plumbing Contractor and pay $40.00 to have the City Plumbing
       Inspector witness the pressure test. Pressure tests are typically scheduled on each Tuesday
       at approximately 9:00a.m. Pressure tests shall be performed no sooner than after the
       plumbing rough inspection and can be done on the same day as the final plumbing
       inspection.

    2. On the day of the pressure test: locate all water outlets and toilets in the house.

    3. Find the sill cock or drain cock located closest to the water meter and attach the pressure
       gauge. Open the sill cock fully and record the static pressure.

    4. Turn on all plumbing fixtures, both hot and cold. Start in the basement, if applicable, and
       work up to the top floor. Do not open other sill cocks or yard hydrant.

    5. Flush all toilets and record the residual pressure while the toilets are still filling.

If the pressure falls below 20 p.s.i., the water service must be replaced, see Option 1 above.

If the pressure test finds that the water pressure at the water service entrance is maintained at no less
than the 20 p.s.i. at peak demand the water service line size complies with State Plumbing Code and
does not need to be replaced. Money that was collected by the City for the installation of the
proposed new water service line may be eligible for a refund. These fees may include costs for a
larger water meter, inspection fees, cost for replacement of a water service line from main to B-box,
restoration bonds and others. To initiate a refund send a copy of the inspection report that indicates
the pressure at the water meter exceeds the required State Plumbing Code pressure to the Water
Division. The Water Division will review your request, identify all fees that can be refunded and
will then forward the information to the Building Department for processing of the refund.




                                                                                                 Rev. 1/18/11
                                                                                                  Page 2 of 5
           TABLE A – WATER SERVICE LINE SIZING WORKSHEET
Address:_______________________________________                                   Date:   ______________

TABLE A allows you to calculate the number of Water Service Fixture Units for any existing and proposed
plumbing fixtures within your home that is associated to any proposed addition or remodeling.
Where existing fixtures are only being replaced with no other work involved, the fixture is to be included only
as “existing”, do not add these fixtures as “proposed”. If your plans depict “future” fixtures, they are to be
included as “proposed fixtures to ensure that the water service line is properly sized.

** PLEASE NOTE: If this worksheet is to be used for Commercial projects – Commercial Load Values
must be provided.

EXISTING FIXTURES                                    Load Values        No. of fixtures       WSFU Count
 Kitchen sink                                             2
Dishwasher                                                1
Washing Machine                                           2
Laundry Tub                                               3
Toilet with flush tank (refer to Table N)                 3
Toilet with flush valve (refer to Table O)                6
Bathtub/shower                                            2
Shower stall                                              2
Lavatory (sinks)                                          1
Subtotal
PROPOSED FIXTURES                                    Load Values        No. of fixtures       WSFU Count

Kitchen sink                                              2
Dishwasher                                                1
Washing Machine                                           2
Laundry Tub                                               3
Toilet with flush tank (refer to Table N)                 3
Toilet with flush valve (refer to Table O)                6
Bathtub/shower                                            2
Shower stall                                              2
Lavatory (sinks)                                          1
Subtotal

TOTAL Water Service Fixture Unit Count for existing and proposed fixtures
                       CITY OF WHEATON BUILDING AND CODE ENFORCEMENT
                                        Water Service Line - Sizing



                                 TABLE N – Flush Tank
                                TITLE 77: PUBLIC HEALTH
                            PART 890 ILLINOIS PLUMBING CODE
SECTION 890.APPENDIX A PLUMBING MATERIALS, EQUIPMENT, USE RESTRICTIONS AND APPLICABLE
                                       STANDARDS

     Section 890.APPENDIX A Plumbing Materials, Equipment, Use Restrictions and Applicable Standards
             Section 890.TABLE N Water Service Line-Sizing for a Supply System with Flush Tank.

                                                         Pressure Loss
                                       Pipe Size                              Velocity         Meter Size
  W.S.F.U.       Demand (GPM)                              (PSI/100'
                                       (Inches)                              (Ft./Sec.)         (Inches)
                                                            of Pipe)
     2                  2                ½"                   4.2               2.7              ⅝"
     4                  3                ½"                   8.7               4.2              ⅝"
     6                  5                ½"                  22.5               7.0              ⅝"
     8                 6.5               ¾"                   6.3               4.3              ⅝"
    10                  8                ¾"                   9.0               5.4              ¾"
    12                 9.2               ¾"                  11.5               6.1              ¾"
    14                10.4               ¾"                  15.0               6.9              ¾"
    16                11.6               ¾"                  18.0               7.7              ¾"
    20                 14                 1"                  7.2               5.6              ¾"
    25                 17                 1"                 10.0               6.6              ¾"
    30                 20                 1"                 13.6               8.0               1"
    35                22.5               1¼"                  5.8               5.7               1"
    40                 25                1¼"                  7.0               6.3               1"
    45                 27                1¼"                  8.2               6.9               1"
    50                 29                1¼"                  9.5               7.4               1"
    60                 32                1½"                  5.0               5.8              1½"
    70                 35                1½"                  6.2               6.4              1½"
    80                 38                1½"                  7.0               7.2              1½"
    90                 41                1½"                  8.0               7.5              1½"
    100               43.5               1½"                  8.7               7.8               2"
    120                48                 2"                  2.7               5.0               2"
    140               52.5                2"                  3.1               5.4               2"
    160                57                 2"                  3.6               5.8               2"
    180                61                 2"                  3.9               6.1               2"
    200                65                 2"                  4.5               6.6               2"
    225                70                 2"                  5.2               7.1               2"
    250                75                 2"                  6.0               7.7               3"
    275                80                2½"                  2.6               5.5               3"
    300                85                2½"                  2.9               5.8               3"
    350                95                2½"                  3.5               6.5               3"
    400               105                2½"                  4.2               7.1               3"
    450               115                2½"                  5.0               8.0               3"
    500               125                 3"                  2.3               5.9               3"
    600               145                 3"                  3.1               6.8               4"
    750               170                 3"                  4.0               8.0               4"
   1000               208                 4"                  1.5               5.7               4"
   1250               240                 4"                  1.9               6.4               4"
   1500               267                 4"                  2.3               7.0               4"
   1750               294                 4"                  2.8               7.8               4"
   2000               320                 6"                 0.36               3.7               6"




                                                                                                   Rev. 1/18/11
                                                                                                    Page 4 of 5
                         CITY OF WHEATON BUILDING AND CODE ENFORCEMENT
                                           Water Service Line - Sizing




                                 TABLE O - Flushometer
                               TITLE 77: PUBLIC HEALTH
                           PART 890 ILLINOIS PLUMBING CODE
    SECTION 890.APPENDIX A PLUMBING MATERIALS, EQUIPMENT, USE RESTRICTIONS AND
                               APPLICABLE STANDARDS

    Section 890.APPENDIX A Plumbing Materials, Equipment, Use Restrictions and Applicable Standards
    Section 890.TABLE O Water Supply Fixture Units (W.S.F.U.) for a Supply System with Flushometers.

                                                     Pressure Loss
             Demand            Pipe Size                                 Velocity (Ft.    Meter Size
W.S.F.U.                                               (PSI/100'
             (GPM)             (Inches)                 of Pipe)            /Sec.)         (Inches)
   10           27               1¼"                       8.3               6.8             ¾"
   12          28.6              1¼"                       9.2               7.2             ¾"
   14          30.2              1¼"                       10                7.9             ¾"
   16          31.8              1¼"                       11                8.0             ¾"
   20           35               1½"                       6.0               6.4             ¾"
   25           38               1½"                       7.0               6.9              1"
   30           41               1½"                       8.0               7.4              1"
   35          43.8              1½"                       8.8               8.0              1"
   40          46.5               2"                       2.5               4.7              1"
   45           49                2"                       2.7               5.1              1"
   50          51.5               2"                       2.9               5.4             1½"
   60           55                2"                       3.4               5.8             1½"
   70          58.5               2"                       3.7               6.0             1½"
   80           62                2"                       4.0               6.2             1½"
   90          64.8               2"                       4.6               6.5             1½"
  100          67.5               2"                       5.0               6.8             1½"
  120          72.5               2"                       5.6               7.2              2"
  140          77.5               2"                       6.3               8.0              2"
  160          82.5              2½"                       2.7               5.7              2"
  180           87               2½"                       3.0               6.1              2"
  200          91.5              2½"                       3.4               6.4              2"
  225           97               2½"                       3.7               6.8              2"
  250          101               2½"                       4.0               7.1              3"
  275          106               2½"                       4.2               7.3              3"
  300          110               2½"                       4.6               7.6              3"
  350          119                3"                       2.1               5.5              3"
  400          126                3"                       2.3               5.9              3"
  450          138                3"                       2.7               6.3              3"
  500          145                3"                       3.0               6.8              3"
  600          160                3"                       3.6               7.4              4"
  750          178                4"                       1.1               4.7              4"
 1000          208                4"                       1.5               5.6              4"
 1250          240                4"                       1.9               6.4              4"
 1500          267                4"                       2.3               7.0              4"
 1750          294                4"                       2.8               7.8              4"
 2000          321                6"                      0.4                3.7              6"



                                                                                              Rev. 1/18/11
                                                                                               Page 5 of 5

				
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