HomeMy WebLinkAbout12-Plex Water Service Fixture Count
Residential (2018 IRC)
City of Bozeman Water Service Calculation Worksheet
Project Address: ___________________________________ Property Owner: ________________________________
General Contractor: _______________________________________________________________________________
Permit Number: _______________ Proposed Water Meter Size: ______________
UPC Table 610.3 Standard Design Water Supply Fixture Units
Appliances and Fixtures Fixture Units # of Fixtures Total
Bathtub or combo tub/shower (1/2” fill valve) 4.0 X ________ = ________
Bath Tub (3/4” fill valve) 10.0 X ________ = ________
Shower (per head) 2.0 X ________ = ________
Clothes washer 4.0 X ________ = ________
Dishwasher 1.5 X ________ = ________
Hose Bibb 2.5 X ________ = ________
Additional Hose Bibb (each) 1.0 X _______ = ________
Lavatory Sink 1.0 X ________ = ________
Kitchen Sink 1.5 X ________ = ________
Laundry Sink 1.5 X ________ = ________
Water closet [toilet] (1.6 GPF) 2.5 X ________ = ________
Bidet 1.0 X ________ = ________
Urinal (flushometer valve) Table Values* ________ = ________
Total Number of Fixture Units ________
Fixture Unit Tables for Determining Water Pipe & Meter Size Pressure Range – 46-60 PSI
Circle the length in feet to the farthest fixture & applicable service, meter & branch sizes below based on the total number of fixture
units detailed above.
Maximum Allowable Length in feet
Meter & Supply & 60’ 80’ 100’ 150’ 200’
Service Branches
¾” ¾” 20 19 17 14 11
¾” 1” 39 36 33 28 23
1” 1” 39 39 36 30 25
¾” 1¼” 39 39 39 39 39
1” 1¼” 78 76 67 52 44
1½” 1¼” 78 78 78 66 52
1” 1½”/2” 85 85 85 85 85
1½” 1½” 151 151 151 128 105
2” 1½” 151 151 151 150 117
1½” 2” 370 340 318 272 240
2” 2” 370 370 370 368 318
If count is over 370 fixtures, water demand does not meet table 610.4 and must be engineered by a registered Montana
mechanical engineers design, signed and stamped. 04.29.20