A
DFU is a measurement unit for potential water use for a given plumbing fixture or appliance, as provided for in the 2003 International Plumbing Code.
RESIDENTIAL
Source: Uniform Statewide Building Code as Amended by the City of Virginia Beach. The list below reflects the 2003 International Plumbing Code standards.
To determine the total number of DFUs for your property, you will need to add the two sections below. First, select the number of bathrooms for your property from the left hand column. Follow that line across to the total number of DFUs in the far right column. If you have additional items, select the number of DFUs from the second section below. Click here for a printable DFU calculator.
# of Bathrooms |
Bathroom Grouping
# of DFUs |
Kitchen
Sink/Dishwasher |
Washing Machine |
|
Total # of DFUs |
1 |
5 |
2 |
2 |
= |
9 |
1 ½ (note 1) |
9 |
2 |
2 |
= |
13 |
2 |
10 |
2 |
2 |
= |
14 |
2 ½ (note 1) |
14 |
2 |
2 |
= |
18 |
3 |
15 |
2 |
2 |
= |
19 |
3 ½ (note 1) |
19 |
2 |
2 |
= |
23 |
4 |
20 |
2 |
2 |
= |
24 |
4 ½ (note 1) |
24 |
2 |
2 |
= |
28 |
* Note 1: A half bath consists of a toilet and one sink (no bathing facility) |
= |
4 |
Additional items: |
Wet Bar |
= |
1 |
Utility Sink (Laundry Sink) |
= |
2 |
Additional Sink (i.e. Dbl Vanity) |
= |
1 |
Separate Tub (Whirlpool) or Shower in Bathroom |
= |
2 |
Options: |
Hose Bibs (each) - charge applies when not attached to structure |
= |
$44.00 |
NOTE: A final DFU determination will be made upon the final plumbing inspection. Any additional DFU charge will be paid prior to the final inspection release.
NON-RESIDENTIAL
Source: Uniform Statewide Building Code as Amended by the City of Virginia Beach
FIXTURE SOURCE |
FIXTURE UNITS |
Bathroom Groupings Consisting of: |
|
|
1 Water Closet, 1 Lavatory, And 1 Bathtub or Shower Stall, 1Bidet |
6.0(>1.6)/5.0(1.6 gpf) |
|
Bathtub |
2.0 |
|
Bidet |
1.0 |
|
Combination Sink And Tray w/Food Grinder |
2.0 |
|
Combination Sink And Tray w/1-1/2" Trap |
2.0 |
|
Dental Lavatory/Cuspidor |
1.0 |
|
Dishwasher (Commercial) 1-1/2" Trap |
2.0 |
|
Drinking Fountain |
0.5 |
|
Ice Cream Machines w/Dipper Wells |
0.5 |
|
Ice Machines/Free Standing (Residential/Commercial) |
1.0 |
|
Kitchen Sink, Domestic (1-1/2" Trap And Grinder) |
2.0 |
|
Lavatory (1-1/4" Trap) |
1.0 |
|
Showers, Domestic or Per Head |
2.0 |
|
Sinks: |
|
Wash Sink - Circular |
2.0 |
|
Bar |
1.0 |
|
Flushing Rim (w/Valve) |
6.0 |
|
Laundry (1-1/2" Trap) |
2.0 |
|
P Trap (Mop Sink, 3" Trap) |
5.0 |
|
Pot, Scullery, etc. (Large 3 or 4 Comp. Sink) |
4.0 |
|
Service (Small 3 Comp. Sink) |
3.0 |
|
Shampoo/Barber |
2.0 |
|
Slop (3" Trap) |
5.0 |
|
Surgeon's |
3.0 |
|
Urinal, Wall - Regular |
4.0 |
|
Urinal - 1 gal. or less |
2.0 |
|
Washing Machine (Commercial) 2" Trap |
3.0 |
|
Water Closet: |
|
|
Flushometer Tank (Private/Public) |
4.0 |
|
Private Use |
4.0(>1.6)/3.0(1.6 gpf) |
|
Public and/or Employee use |
6.0(>1.6)/4.0(1.6 gpf) |
|
X-ray processor w/1-1/2" trap |
2.0 |
|
Unlisted Fixture or Trap Size: |
|
|
Floor Drain w/2" waste |
2.0 |
|
1-1/4" or less |
1.0 |
|
1-1/2" |
2.0 |
|
2" |
3.0 |
|
2-1/2" |
4.0 |
|
3" |
5.0 |
|
4" |
6.0 |
|
NO CHARGE FOR HUB DRAINS OR CONDENSATE DRAINS |
|
Emergency Floor Drain (2" Trap) |
0.0 |
|
Pedicure Chairs |
2.0 |
|
Hose Bibs (each) - charge applies when not attached to structure |
$44.00 |
NOTE: A final DFU determination will be made upon the final plumbing inspection. Any additional DFU charge will be paid prior to the final inspection release.