BASIC CALCULATION FOR PUMP & TANK SELECTION
The following are the design considered based on NFPA 13 / 14 & 24
1) FIRE HOSE REEL SYSETM
FHR Flow rate = 50 gpm
Max No of FHR in operation at any time = 2 Nos
Duration of operation = 90 mins Ordinary Hazard- II (e.g Public ) Fire hose reel TANK STORAGE CAPACITY (for Ordinary Hazard Area)
= 50 gpm * 2 No * 90 Mins 9000 gpm Total storage volume required = 9000 gallons (Minimum)
1 galloons = 3.785 litres
Total storage volume required = 9000 gallons * 3.785 34065 litres
TOTAL STORAGE TANK VOLUME 34 m3
Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation
Residual Pressure required at FHR = 4.0 Bar
Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
Total head pressure required = 5.0 bar Minimum.
2) FIRE HYDRANT SYSETM
Hydrant Flow rate = 250 gpm
Max No of FH in operation at any time = 2 No
Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area)
= 250 gpm * 2 No * 90 Mins 45000 gpm Total storage volume required = 45000 gallons (Minimum)
1 galloons = 3.785 litres
Total storage volume required = 45000 gallons * 3.785 170325 litres
TOTAL STORAGE TANK VOLUME 170 m3
Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation
Residual Pressure required at FHR = 4.5 Bar
Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
Total head pressure required = 6.5 bar Minimum.
3) SPRINKLER SYSETM
Sprinkler spacing will be 3.6 meters
design density will be 0.15gpm/ft2(Ordinary Hazard) area will be 1500 ft2 to be assumed as fire zone
Total storage volume required = 20250 gallons * 3.785 76646 litres
TOTAL STORAGE TANK VOLUME 77 m3
4) WET RISER
Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No
Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area)
= 250 gpm * 1 No * 90 Mins 22500 gpm Total storage volume required = 22500 gallons (Minimum)
1 galloons = 3.785 litres
Total storage volume required = 22500 gallons * 3.785 85163 litres
TOTAL STORAGE TANK VOLUME 85 m3
Pump flow rate required = 1 x 250 gpm = 250 gpm Fire hose reel pump Head calculation
Residual Pressure required at FHR = 4.5 Bar
Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
Total head pressure required = 6.5 bar Minimum.
NOTE:-1) ESFR - Early Suppression Fast Response Sprinkler (or) combination of standard sprinklers for overhead and in-racks 2) If rack sprinklers are provided, then the flow rate and number of sprinklers will vary
TANK CAPACITY PUMP CAPACITY
FHR 11 m3 FHR 100 GPM
FH 28 m3 FH 250 GPM
SPRINKLER 34 m3 SPRINKLER 300 GPM
SAFETY FACTOR 7 m3 HOSE STREAM 50 GPM
TOTAL 80 m3 SAFETY FACTOR 50 GPM
TOTAL 750 GPM
1 CALCULATION FOR PUMP & TANK SELECTION
The following are the design considered based on ROP standard Part-IV
1.1 FIRE PUMP CALCULATION
a) FIRE HOSE REEL SYSETM
Accordance with ROP. Coverage will be 30meters FHR Flow rate(Minimum discharge rate) = 0. 5 L/s Max No of FHR in operation at any time = 2 Nos Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation
Residual Pressure required at FHR = 4.0 Bar
Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
Total head pressure required = 5.0 bar Minimum.
b) FIRE HYDRANT SYSETM
Accordance with NFPA 24. Each FH Flow rate = 250 gpm
Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation
Residual Pressure required at FH = 7.0 Bar
Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
c) SPRINKLER SYSETM
Accordance with NFPA 13. Maximum hazard 1500sq.feet will be occur in Ordinary hazard Sprinkler spacing will be 3.6 meters
design density will be 0.15gpm/ft2 1500 x 0.15 = 225 gpm
Total capacity will be 225gpm...
Residual Pressure required at Sprinkler = 3.5 Bar Pressure loss in pipe/fittings etc = 0.5 bar
Safety = 0.5 bar
Total head pressure required = 4.5bar Minimum.
NOTE:-1) ESFR - Early Suppression Fast Response Sprinkler (or) combination of standard sprinklers for overhead and in-racks 2) If rack sprinklers are provided, then the flow rate and number of sprinklers will vary
d) WET RISER
Accordance with NFPA 13.
Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No
Pump flow rate required = 1 x 250 gpm = 250 gpm Fire hose reel pump Head calculation
Residual Pressure required at WR = 4.5 Bar
Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
e) Table
ITEM FLOW RATE (GPM)
FHR 100 GPM FH 500 GPM SPRINKLER 225 GPM LANDING VALVE 250 GPM HOSE STREAM( 5%) 54 GPM SAFETY FACTOR(5%) 56 GPM TOTAL 1185 GPM
FIRE PUMP CAPACITY = 1185 =1250GPM @ 11 BAR(pressure required + 20% )
f) Result : 1250 US GPM ELECTRICAL PUMP AT 11 BAR PRESSURE
1250 US GPM DISEL PUMP AT 11 BAR PRESSURE 125 US GPM JOCKEY PUMP AT 11 BAR PRESSURE
1.2 HIGH PRESSURE WATER MIST PUMP CALCULATION
The system is designed as NFPA standard 750, in ordinary Hazard -II(area of operation - 144Sq.meter) Number of nozzles to protect the area of 144 sq.mtr: 12nos of Nozzle will be operate.
Nozzle Flow rate = 28.8 Lpm
Max No of Nozzle in operation at any time = 12 Nos Pump flow rate required = 12 x 28.8Lpm = 316.8 L/min Each pump can discharge 120 lpm @ 120 bar pressure Hence no. of pump required = 316.8/120 = 2.6 ~ 3 nos.
Each Motor Drive 1 pump, hence we choose main 3x120 L/min + stand by 1x120 L/min. Total pump capacity on duty of 360 lpm @ 120 bar + 120 lpm @ 120 bar stand by, utilizing 4 nos. Of 30 kW electric driven motor.
pump capacity = 3x120L/min at 120 bar pressure +standby 1x120 L.min at 120bar
1.3 FIRE TANK CALCULATION
a) FIRE HOSE REEL SYSETM
FHR Flow rate = 50 gpm
Max No of FHR in operation at any time = 2 Nos
Duration of operation = 90 mins Ordinary Hazard- II (e.g Public ) Fire hose reel TANK STORAGE CAPACITY (for Ordinary Hazard Area)
= 50 gpm * 2 No * 90 Mins 9000 gpm
b) FIRE HYDRANT SYSETM
Hydrant Flow rate = 250 gpm
Max No of FH in operation at any time = 2 No
Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area)
= 250 gpm * 2 No * 90 Mins 45000 gpm
Total storage volume required = 45000 gallons (Minimum) 1 galloons = 3.785 litres
Total storage volume required = 45000 gallons * 3.785 TOTAL STORAGE TANK VOLUME
c) SPRINKLER SYSETM
Sprinkler spacing will be 3.6 meters
design density will be 0.15gpm/ft2(Ordinary Hazard) area will be 1500 ft2 to be assumed as fire zone 1500 x 0.15 = 225 gpm
Total capacity will be 225gpm...
Sprinkler Water Storage Capacity (for Ordinary Hazard Area) = 225 gpm * 1 No * 90 Mins
1 galloons = 3.785 litres
Total storage volume required = 20250 gallons * 3.785 TOTAL STORAGE TANK VOLUME
d) WET RISER
Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No
Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area)
= 250 gpm * 1 No * 90 Mins 22500 gpm
Total storage volume required = 22500 gallons (Minimum) 1 galloons = 3.785 litres
Total storage volume required = 22500 gallons * 3.785 TOTAL STORAGE TANK VOLUME
e) HIGH PRESSURE WATER MIST SYSTEM
Water Tank for 316 lpm with 90 minutes operation = 360 x 90 minute = 28000 litre effective Total storage volume required = 28000
TOTAL STORAGE TANK VOLUME e) Table ITEM CAPACITY (M3) FHR 34 M3 FH 170 M3 SPRINKLER 77 M3 LANDING VALVE 85 M3
WATER MIST SYSTEM 28 M3
TOTAL 394 M3
WATER TANK CAPACITY = 394 =400M2(Only for fire) f) Result : 400M3 Water Tank Capacity only for fire
Fire tank to maintain an individual dedicated fire tank. This fire tank should be separated into two divisions, One for fire sprinkler system & fire hose reel and the other for fire hydrants
34065 litres
170325 litres 170 m3 20250 gallons 76646 litres 77 m3 85163 litres 85 m3
28000 litres
28 m3
PROJECT NO: 1091 PROJECT NAME: PUMP POWER
BHP = GPM * PUMP HEAD (Feet) * SP GRAVITY
3960 * % OF PUMP EFFICIENCY SAMPLE CALCULATION = 750 GPM * 93 * 1 3960 * 0.7 = 69750 2772 = 25.16 1 hp = 750 Watts 18872 = 19
1) FIRE PUMP FOR PASFR ADMIN BUILDING
= 400 GPM * 352 * 1 3960 * 0.7 = 140800 2772 = 50.79 1 hp = 750 Watts 38095 = 38
2) UTILITY PUMP FOR PASFR ADMIN BUILDING
For total loading unit of 8 corresponding design flow rate is =
6 Litre / Sec 360
95.11 95 GPM * 192 * 1
= 6.58 = 4935 = 5 3) SUMP PUMP 15 GPM * 200 * 1 3960 * 0.7 = 3000 2772 = 1.08 = 812 = 0.812
GPM * PUMP HEAD (Feet) * SP GRAVITY SP GRAVITY = SPECIFIC GRAVITY OF LIQUID
3960 * % OF PUMP EFFICIENCY NORMAL WATER = 1
hp Watts kW 110 meter 352 feet hp Watts kW 6 l/s
Litre / Mins 1 galloons = 3.785 litres
gallons / min
hp Watts kW 200 feet hp Watts kW
SPECIFIC GRAVITY OF LIQUID NORMAL WATER = 1
Each pump can discharge 120 lpm @ 120 bar pressure Hence no. of pump required = 316.8/120 = 2.6 ~ 3 nos.
Each Motor Drive 1 pump, hence we choose main 3x120 L/min + stand by 1x120 L/min. Total pump capacity on duty of 360 lpm @ 120 bar + 120 lpm @ 120 bar stand by, utilizing 4 nos. Of 30 kW electric driven motor.
Water Tank for 360 lpm with 30 minutes operation = 360 x 30 minute = 10800 litre effective water capacity, therefore water tank capacity with 20% allowance which is of 12960 litre shall be the minimum water capacity.
WET RISER
Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No
Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area)
= 250 gpm * 1 No * 90 Mins 22500 gpm
Total storage volume required = 22500 gallons (Minimum) 1 galloons = 3.785 litres
Total storage volume required = 22500 gallons * 3.785 TOTAL STORAGE TANK VOLUME
b) FIRE HYDRANT SYSETM
Hydrant Flow rate = 250 gpm
Max No of FH in operation at any time = 2 No
Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area)
= 250 gpm * 2 No * 90 Mins 45000 gpm
Total storage volume required = 45000 gallons (Minimum) 1 galloons = 3.785 litres
Total storage volume required = 45000 gallons * 3.785 TOTAL STORAGE TANK VOLUME
TOTAL WATER FOR FIRE REQUIREMENT
PUMP POWER
BHP = GPM * PUMP HEAD (Feet) * SP GRAVITY
2772
= 25.16 hp
1 hp = 750 Watts 18872 Watts
67500 85163 litres 85 m3 170325 litres 170 m3 255 m3
BASIC CALCULATION FOR PUMP & TANK SELECTION
The following are the design considered based on NFPA 13 / 14 & 24
1) FIRE HOSE REEL SYSETM
FHR Flow rate = 50 gpm
Max No of FHR in operation at any time = 2 Nos
Duration of operation = 90 mins Ordinary Hazard- II (e.g Public ) Fire hose reel TANK STORAGE CAPACITY (for Ordinary Hazard Area)
= 50 gpm * 2 No * 90 Mins 9000 gpm Total storage volume required = 9000 gallons (Minimum)
1 galloons = 3.785 litres
Total storage volume required = 9000 gallons * 3.785 34065 litres
TOTAL STORAGE TANK VOLUME 34 m3
Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation
Residual Pressure required at FHR = 4.0 Bar
Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
Total head pressure required = 5.0 bar Minimum.
2) FIRE HYDRANT SYSETM
Hydrant Flow rate = 250 gpm
Max No of FH in operation at any time = 2 No
Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area)
= 250 gpm * 2 No * 90 Mins 45000 gpm Total storage volume required = 45000 gallons (Minimum)
1 galloons = 3.785 litres
Total storage volume required = 45000 gallons * 3.785 170325 litres
TOTAL STORAGE TANK VOLUME 170 m3
Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation
Residual Pressure required at FHR = 4.5 Bar
Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
Total head pressure required = 6.5 bar Minimum.
4) WET RISER
1 galloons = 3.785 litres
Total storage volume required = 22500 gallons * 3.785 85163 litres
TOTAL STORAGE TANK VOLUME 85 m3
Pump flow rate required = 1 x 250 gpm = 250 gpm Fire hose reel pump Head calculation
Residual Pressure required at FHR = 4.5 Bar
Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
Total head pressure required = 6.5 bar Minimum.
NOTE:-1) ESFR - Early Suppression Fast Response Sprinkler (or) combination of standard sprinklers for overhead and in-racks 2) If rack sprinklers are provided, then the flow rate and number of sprinklers will vary
TANK CAPACITY PUMP CAPACITY
FHR 11 m3 FHR 100 GPM
FH 28 m3 FH 250 GPM
SAFETY FACTOR 7 m3 HOSE STREAM 50 GPM
TOTAL 80 m3 SAFETY FACTOR 50 GPM
TOTAL 750 GPM
1 CALCULATION FOR PUMP & TANK SELECTION
The following are the design considered based on ROP standard Part-IV
1.1 FIRE PUMP CALCULATION
a) FIRE HOSE REEL SYSETM
Accordance with ROP. Coverage will be 30meters FHR Flow rate(Minimum discharge rate) = 0. 5 L/s Max No of FHR in operation at any time = 2 Nos Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation
Residual Pressure required at FHR = 4.0 Bar
Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
Total head pressure required = 5.0 bar Minimum.
b) FIRE HYDRANT SYSETM
Accordance with NFPA 24. Each FH Flow rate = 250 gpm
Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation
Residual Pressure required at FH = 7.0 Bar
Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar
Total head pressure required = 9.0 bar Minimum.
e) Table
ITEM FLOW RATE (GPM)
FHR 100 GPM
FH 500 GPM
HOSE STREAM( 5%) 30 GPM
SAFETY FACTOR(5%) 32 GPM
TOTAL 662 GPM
FIRE PUMP CAPACITY =650GPM @ 11 BAR(pressure required + 20% )
Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure)
Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure)
SAMPLE CAL = 750 GPM * 93 * 1 3960 * 0.7 = 60450 2772 = 25.16 hp 1 hp = 750 Watts 18872 Watts = 19 kW
