example plumbing, sewage & fire calculation
DESCRIPTION
Plumbing RefTRANSCRIPT
TABLE OF CONTENTS DESCRIPTION
1. POTABLE WATER DEMAND CALCULATION 01- 06
2. SEWAGE FLOW CALCULATION0 07- 09
3. FIRE FIGHTING WATER DEMAND CALC. 10-11
1. POTABLE WATER BRANCH MAINS CALCULATION:
1A.) WATER FIXTURE UNIT VALUES (WFUV): WATER FIXTURE UNIT VALUES (WFUV) WERE BASED ON 2012 UNIFORM PLUMBING CODE (UPC); APPENDIX A, TABLE A-2, WATER FIXTURE UNIT VALUES,
DESCRIPTION
NO.
WFU VALUE
SUB-TOTAL
WC-1 (Staff/ Public use)
2
Refer attachment for Flush Valve
70
LAV-1 (Staff/ Public use)
2
1
2
LAV-2 (Staff/ Public use)
2
1
2
SK-1 (Commercial use)
1
1.5
1.5
TOTAL WFUV = 75.5
1B.) POTABLE WATER DEMAND / BRANCH MAIN SIZE: FROM DEMAND LOAD CHART, FOR SYSTEM PREDOMINANTLY FLUSH VALVE; (2009 INTERNATIONAL PLUMBING CODE (IPC), TABLE E103.3(3), TABLE FOR ESTIMATING DEMAND)
@ TOTAL WFUV = 75.5 FU WATER DEMAND = 60 Gpm
USING HAZEN WILLIAMS FORMULA (Pipe Friction Formula);
USE (pipe size) ; 50 mm VELOCITY = 5.74 fps FRICTION LOSS = 5.6 ft/100ft. = 2.43 psi/100ft.
1C.) REFERENCE ATTACHMENT:
2. SEWAGE FLOW CALCULATION:
2A.) TOTAL DRAINAGE FIXTURE UNIT VALUES (DFUV): DRAINAGE FIXTURE UNIT VALUES (DFUV) WERE BASED ON 2012 UNIFORM PLUMBING CODE (UPC); TABLE 702.1, DRAINAGE FIXTURE UNITS
DESCRIPTION
NO.
WFU VALUE
SUB-TOTAL
WC-1 (Staff/ Public use)
2
4
8
LAV-1 (Staff/ Public use)
2
1
2
LAV-2 (Staff/ Public use)
2
1
2
SK-1 (Commercial use)
1
2
2
FD-1
4
2
8
TOTAL DFUV = 22
2B.) TOTAL SEWAGE FLOW: FROM NBS NOMOGRAM;
@ TOTAL DFUV = 22 FU DRAINAGE FLOW = 37 GPM
2C.) REFERENCE ATTACHMENT:
3. FIRE FIGHTING:
3A.) TOTAL WATER DEMAND: ADDITIONAL FLOOR AREA = 2206 Ft² HAZARD CLASSIFICATION = ORDINARY HAZARD (due to additional floor only) Note : Area of Operation (AOP) = 2206 ft² Density (DD) = .15 gpm/ft² Overall Factor (OVF) = 1.1 The sprinkler water demand = AOP X DD X OVF = 2206 x .15 x 1.1 = 365 gpm From Table 11.2.3.1.1, for a ordinary hazard, the HSD (Combined) = 250 GPM. Thus, TOTAL WATER DEMAND = 365 + 250 GPM = 615 GPM TOTAL WATER DEMAND IN 60 MINUTES = 615 x 60 min = 36900 Gallons. 3B.) REFERENCE ATTACHMENT:
