HomeMy WebLinkAboutReports - Utilities - 04/15/2025 WATER CALCULATIONS
LOAD VALUE TOTAL LOAD VALUE TOTAL FIXTURE
QUANTITY FIXTURE COLD HOT VALUE UNITS
13 WATER CL❑SET(FLUSH VALVE) 10 — 10 130
5 URINAL 5 — 5 25
10 LAVATORY 1. 5 1. 5 2 20
3 SINK 1. 5 1. 5 2 6
2 MOP SINK 2. 25 2. 25 3 6
3 ELECT DRINK F❑UNTAIN 0. 25 — 0. 25 0. 75
6 COFFEE/REF 0. 5 — 0. 5 3
10 HOSE BIB ALLOWANCE 2. 5 — 2. 5 25
TOTAL NUMBER OF FIXTURE UNITS = 215. 75 @ 94 GPM
PRESSURE @ METER = 70 PSI — 10 PSI (BFP) — 4 PSI (ML) = 56 PSI
USE NEW 1-1/2' COMPOUND WATER METER, 2-1/2' BACKFL❑W PREVENTER w/ 2-1/2' MAIN
BUILDING LINE.
56 — 130 + (25 x . 43)7 = 15. 25 PSI
ALLOWABLE L❑SS/100 FEET OF TOTAL DEVELOPED LENGTH OF PIPEi
100 x 15. 25 / 600 FEET = 2. 5 PSI
PLUMBING CONTRACTOR TO VERIFY AND COORDINATE EXACT STREET PRESSURE
AND N❑TIFY ENGINEER OF ANY DISCREPANCIES.
PLUMBING CONTRACTOR TO PROVIDE A PRESSURE REDUCING VALVE (PRV) ON CITY SIDE
OF WATER METER IF THE STREET PRESSURE EXCEED 80 PSI, PRV TO BE SET @ 80 PSI
PLUMBING CONTRACTOR TO PROVIDE AND INSTALL A WATTS #LF909 OR EQUAL REDUCED PRESSURE
PRINCIPLE BACKFLDW PREVENTER SAME SIZE AS LINE C❑NNECTING TO IT INSIDE OF BUILDING.
BACKFLDW PREVENTER SHALL BE READILY ACCESSIBLE FOR INSPECTION.
'BEFORE THE LOCAL JURISDICTION WILL ACCEPT AN INSTALLED BACKFL❑W DEVICE FOR
APPROVAL, THE F❑LLOWING MUST BE ACC❑MPLISHED. THE DEVICE MUST BE TESTED BY A STATE
CERTIFIED BACKFL❑W TESTER AND TEST RESULTS FORWARDED TO THE LOCAL JURISDICTI❑N
BACKFL❑W SPECIALIST. THE LOCAL JURISDICTI❑N WILL PR❑VIDE AN UP—TO—DATE LIST OF
CERTIFIED TESTERS FROM WHICH TO BE SELECTED. TESTER FEES WILL BE AT THE EXPENSE OF
THE INSTALLER. '
PIPE SIZING CHART
FIXTURE UNITS
PIPE SIZE GPM
FLUSH VALVE OTHER
1/2' 1 — 1
3/4' 4 — 4
1' 9 — 13
1 1/4' 17 5 25
1 1/2' 25 8 42
2' 56 60 150
2 1/2' 98 225 370
o PEDERSEN TOYOTA NA�GN= /c9
'o FORT COLLINS, CO Job No: 20435 c `lo
cn
TM N. 16th Stmt
e�
/G N S Suite #200 �� •. � 2�- .;;�,�
j PhoeniX AZ 85020
PH: 602.943.6608
WE: wwwMechDesigns.com FAX 602.943.6181