Hydraulic Numbers

Question 1

One cubic foot contains……cubic inches

Answer 1

1728 cubic inches Pg 6

Question 2

One cubic foot contains……gallons

Answer 2

7.5 gallons Pg 6

Question 3

One cubic foot of fresh water weighs……

Answer 3

62.5 pounds Pg 6

Question 4

One gallon contains……cubic inches

Answer 4

231 cubic inches Pg 7

Question 5

One gallon of fresh water weighs……

Answer 5

8.33 pounds Pg 7

Question 6

A column of water 1’ high exerts a pressure of……at its base

Answer 6

0.434 psi at its base Pg 7

Question 7

A column of water 2.304’ high exerts a pressure of…..at its base

Answer 7

1 psi at its base Pg 7

Question 8

50’ length of 1.75” hose contains……gallons of water

Answer 8

6.24 gallons of water Pg 7

Question 9

50’ length of 1.88” hose contains…..gallons of water

Answer 9

7.20 gallons of water Pg 7

Question 10

50’ length of 2.5” hose contains…..gallons of water

Answer 10

12.74 gallons of water Pg 7

Question 11

50’ length of 3” hose contains……gallons of water

Answer 11

18.35 gallons of water Pg 7

Question 12

100’ length of 4” hose contains…..gallons of water

Answer 12

65.25 gallons of water Pg 7

Question 13

100’ length of 5” hose contains…..gallons of water

Answer 13

101.94 gallons of water Pg 7

Question 14

Theoretical Calculations Hand Line 50 PSI 1/2” tip size -….GPM

Answer 14

53 GPM Pg 14

Question 15

Theoretical Calculations Hand Line 50 PSI 7/8” tip size -….GPM

Answer 15

161 GPM Pg 14

Question 16

Theoretical Calculations Hand Line 50 PSI 15/16” tip size -….GPM

Answer 16

185 GPM Pg 14

Question 17

Theoretical Calculations Hand Line 50 PSI 1” tip size-….GPM

Answer 17

210 GPM Pg 14

Question 18

Theoretical Calculations Hand Line 50 PSI 1 1/8” tip size-…..GPM

Answer 18

266 GPM Pg 14

Question 19

Theoretical Calculations Hand Line 50 PSI 1 1/4” tip size-…..GPM

Answer 19

328 GPM Pg 14

Question 20

Fire Ground Calculations Hand Line 50 PSI 1/2” tip-….GPM

Answer 20

50 GPM Pg 14

Question 21

Fire Ground Calculations Hand Line 50 PSI 7/8 “ tip-….GPM

Answer 21

150 GPM Pg 14

Question 22

Fire Ground Calculations Hand Line 50 PSI 15/16 tip-….GPM

Answer 22

185 GPM Pg 14

Question 23

Fire Ground Calculations Hand Line 50 PSI 1” tip-…..GPM

Answer 23

200 GPM Pg 14

Question 24

Fire Ground Calculations Hand Line 50 PSI 1 1/8” tip-…..GPM

Answer 24

250 GPM Pg 14

Question 25

Fire Ground Calculations Hand Line 50 PSI 1 1/4” tip-…..GPM

Answer 25

325 GPM Pg 14

Question 26

Theoretical Calculations Master Stream @ 80 PSI 1 1/4” tip-…..GPM

Answer 26

415 GPM Pg 15

Question 27

Theoretical Calculations Master Stream @ 80 PSI 1 3/8” tip-……GPM

Answer 27

502 GPM Pg 15

Question 28

Theoretical Calculations Master Stream @ 80 PSI 1 1/2” tip-…..GPM

Answer 28

598 GPM Pg 15

Question 29

Theoretical Calculations Master Stream @ 80 PSI 1 3/4 tip-……GPM

Answer 29

814 GPM Pg 15

Question 30

Theoretical Calculations Master Stream @ 80 PSI 2” tip-…..GPM

Answer 30

1062 GPM Pg 15

Question 31

Fire Ground Calculations Master Stream @ 80 PSI 1 1/4” tip-…..GPM

Answer 31

400 GPM Pg 15

Question 32

Fire Ground Calculations Master Stream @ 80 PSI 1 3/8” tip-…..GPM

Answer 32

500 GPM Pg 15

Question 33

Fire Ground Calculations Master Stream @ 80 PSI 1 1/2” tip-…..GPM

Answer 33

600 GPM Pg 15

Question 34

Fire Ground Calculations Master Stream @ 80 PSI 1 3/4” tip-……GPM

Answer 34

800 GPM Pg 15

Question 35

Fire Ground Calculations Master Stream @ 80 PSI 2” tip-…..GPM

Answer 35

1000 GPM Pg 15

Question 36

Coefficients

Answer 36

1" = 150
1 3/4" = 10 per fairfax, 15.5 per IFSTA.
1.88" = 10
2" = 8
2 1/2" = 2
3" = 0.8
3 1/2" = 0.34
4" = 0.2
5" = 0.08
Pg 21

Question 37

1.85^2 is

Answer 37

3.42