HomeMy WebLinkAbout011-water service worksheetResidential (2012 IRC)
City of Bozeman Water Service Calculation Worksheet
Project Address: ___________________________________ Property Owner: ______________________________
General Contractor: _______________________________________________________________________________
Permit Number: _______________ Proposed Water Meter Size: _______________
Standard Design Water Supply Fixture Units
Appliances and Fixtures Fixture Units # of Fixtures Total
Bathtub/Combination Tub/Shower 4.0 X ________ = ________
Soaker Tub 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 (1.6 GPF) 2.5 X ________ = ________
Urinal (flushometer valve) Table Values* ________ = ________
Total Number of Fixture Units ________
Fixture Unit Tables for Determining Water Pipe & Meter Size Pressure Range – Over 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 20 19 17 14
¾” 1” 39 39 36 33 28
1” 1” 39 39 39 36 30
¾” 1¼” 39 39 39 39 39
1” 1¼” 78 78 76 67 52
1½” 1¼” 78 78 78 78 66
1” 1½”/2” 85 85 85 85 85
1½” 1½” 151 151 151 151 128
2” 1½” 151 151 151 151 150
1½” 2” 370 370 340 318 272
2” 2” 370 370 370 370 368
If count is over 370 fixtures, water demand does not meet table 6.10.4 and has to be engineered by a
registered Montana mechanical engineers design, signed and stamped.
12.20.17