Math/Formulas

Question 0

Friction Loss

Answer 0

CQ2L
C=coefficient
Q=GPM/100 squared
L= Length of Lay/100

Question 1

FL COEFFICIENTS

Answer 1

1"-500, 
1 1/2"-22, 
1 3/4"- 11, 
2 1/2"- 1.5, 
3"-0.7, 
4"- .15
3"+4"-.07

Question 2

Theoretical Lift

Answer 2

33.8 ft (14.7 x2.3)

Question 3

Loss of lift per 1000’ gained

Answer 3

1ft

Question 4

Atmospheric pressure loss per 1000’

Answer 4

.5 psi

Question 5

Practical lift

Answer 5

20-25 ft

Question 6

Height of lift

Answer 6

(1.13ft/ in Hg)(in Hg)

Question 7

Net Pump Pressure

Answer 7

Discharge-intake

Question 8

Friction loss for portable monitor

Answer 8

400-6
500- 9
600- 13
750- 20
800- 23
1000- 36

Question 9

Friction loss for deck gun

Answer 9

400- 5
500- 8
600- 12
750- 18
800- 21
1000- 32

Question 10

Net Pump Pressure from Draft

Answer 10

Discharge press+(.5 psi)(height of draft)

Question 11

Like Volumes

Answer 11

0-10%- 3 times equal volume

10. 01- 15%- 2 volumes
11. 01- 25%- 1 volume
12. 01+ - less than 1 volume

Question 12

Fog Nozzle GPM Actual

Answer 12

(.1)(√Oper. Pres)(GPM rated)

Question 13

Straight Tip GPM Actual

Answer 13

29.7d2√pres

Question 14

Head Pressure

Answer 14

± .5 psi

5 psi per floor above the first

Question 15

Standpipe FL

Answer 15

25 psi + 5 psi per floor above first

Question 16

1 psi in lift

Answer 16

2.3 ft

Question 17

PSI to lift 1 ft

Answer 17

.434 psi

Question 18

Sprinkler head GPM per head

Answer 18

.5P+15 Times the number of heads

Question 19

Quantity of flow from hydrant

Answer 19

29.7d2√P(.9)

Question 20

Capacity of a cylinder

Answer 20

D²6L

Question 21

Capacity of a square or rectangle container

Answer 21

LWH(7.5gal/ft³)

For weight of the water multiply answer by 8.33

Question 22

Light water application

Answer 22

(GPM)(minutes)= gallons of mixture

(% required)(total gallons of mixture)=Total gallons of light water