Hydraulic Calculator

Question 1

Ladder Pipe 1 1/2” tip

Answer 1

(600 GPM) 150 PSI + 7 psi FL per 100’ of 4”

Question 2

Ladder Pipe 1 3/4” tip

Answer 2

(800 GPM) 170 PSI + 12 psi FL per 100’ of 4”

Question 3

Ladder Pipe 2” tip

Answer 3

(1000 GPM) 190 + 19 psi of FL per 100’ of 4”

Question 4

Ladder Pipe Hydrofoam Nozzle

Answer 4

(660 GPM) 175 PSI + 9 psi of FL per 100’ of 4”

Question 5

Ladder Pipe Spray Tip 350 GPM

Answer 5

140 PSI + 3 psi of FL per 100 of 4”

Question 6

Ladder Pipe Spray Tip 500 GPM

Answer 6

160 PSI + 5 psi of FL per 100 of 4”

Question 7

Ladder Pipe Spray Tip 750 GPM

Answer 7

180 PSI + 11 psi of FL per 100 of 4”

Question 8

Ladder Pipe Spray Tip 1000 GPM

Answer 8

220 PSI + 19 psi of FL per 100 of 4”

Question 9

Portable monitor 350 GPM

Answer 9

105 PSI + 3 psi of FL per 100’ of 4”

Question 10

Portable monitor 500 GPM

Answer 10

110 PSI + 5 psi of FL per 100’ of 4”

Question 11

Portable monitor 750 GPM

Answer 11

115 PSI + 11 psi of FL per 100’ of 4”

Question 12

Portable monitor 1000 GPM

Answer 12

125 PSI + 19 psi of FL per 100’ of 4”

Question 13

Portable monitor Hydro Foam nozzle 660 GPM

Answer 13

115 PSI + 9 psi of FL per 100’ of 4”

Question 14

Jet Ratio Controller

Answer 14

50 constant + 40 psi for ladder pipe + 35 psi of FL per 100 of 1 1/2. Max of 1000’

Question 15

1 1/2 inline foam eductor

Answer 15

200 PSI, always use 1 1/2 nozzle. if 1 1/2” hose used 150’ away from eductor
if 1 3/4” hose used 250’ away from eductor

Question 16

Barricade Nozzle

Answer 16

60 appliance + 75 NP + 10 psi of FL for 100 of 1”, 20 GPM

Question 17

Sprinklers

Answer 17

no fire = 100 PSI / fire = 150 PSI

Question 18

Metro Rail

Answer 18

125 PSI

Question 19

Standpipes

Answer 19

25 PSI for appliance + 5 PSI per floor + hose lay

Question 20

High Rise System Pressure estimation

Answer 20

150 (125 psi for highest outlet + 25 psi for standpipe) + 5 psi per floor.

Question 21

High Rise Fire pumps running

Answer 21

100 below system pressure

Question 22

High Rise Fire pumps fail

Answer 22

pump system pressure and notify IC

Question 23

Helicopter fillin

Answer 23

95 PSI + 5 psi of FL for 100’ of 4”

Question 24

Progressive Hose Lay

Answer 24

165 PSI for 1st pack + 15 psi for each additional

Question 25

Foam tender

Answer 25

100 PSI

Question 26

2 1/2” with 1 1/4 smooth bore tip

Answer 26

300 GPM, 40 PSI NP + 20 psi of FL per 100’ of 2 1/2”

Question 27

2 1/2” with 1 1/2 smooth bore tip + stream straighten

Answer 27

530 GPM, 60 PSI NP + 60 psi of FL per 100’ of 2 1/2”

Question 28

5/8th tip GPM?

Answer 28

105 GPM, 80 PSI NP

Question 29

3/4th tip GPM?

Answer 29

150 GPM, 80 PSI NP

Question 30

1 1/2” 125 GPM nozzle pressures

Answer 30

110, 145, 180, 215

Question 31

1 3/4” 200 GPM nozzle pressures

Answer 31

125, 175, 225, 275