Hydrolics

Question 1

What is the friction loss for deck gun

Answer 1

400 GPM 5
 500 GPM 8
600 GPM 12 
800 GPM 21 
1000 GPM 32

Question 2

What is the friction loss for ladder pipes, water towers, and standpipes

Answer 2

25 to 75 PSI

Question 3

What pressures do you pump master stream fog nozzle

Answer 3

500 GPM 92 NP
750 GPM 96 NP
1000 GPM 100 NP

Question 4

The master stream is over how many GPM

Answer 4

400 GPM

Question 5

What is theoretical lift

Answer 5

33.8 feet = (14.7 psi)(2.3 ft)

Question 6

What is practical lift

Answer 6

20 to 25 ft

Question 7

For every 1000 FT gain in altitude how much loss of lift is created

Answer 7

1ft

Question 8

What is the formula for friction loss

Answer 8

FL = CQ2L

Question 9

What is the formula for determining extra water

Answer 9

Static-residual (100)/static

Question 10

What is the formula for static unknown

Answer 10

(R1-R2)/2+ R1

Question 11

What are the steps for relay pumping

Answer 11

1. determine friction loss/100 FT
2. Dist./pumper=(available pressure)(100)/fl/100
3. # pumpers=(total dist.)/(dist./pumper)
4. Spacing=(total dist.)/(#pumpers)
5. Add attack pumper
6. Determine spacing starting at source
7. Determine PDP: (fl/100)(distance pumped)+50PSI

Question 12

What is the friction loss for a portable monitor

Answer 12

400 GPM  6
500 GPM  9
600 GPM 13
800 GPM 23
1000 GPM 36

Question 13

What is the intake pressure desired at each engine during relay pumping

Answer 13

50 PSI

Question 14

What is the max pressure for 4” hose

Answer 14

185 psi

Question 15

What is the formula for height of lift

Answer 15

1.13in hg (in hg)

Question 16

What are the coefficients for 1”-5” and duels

Answer 16

1"       500
1.5"    22
1.75"  11
2.5"    1.5
3"        .7
4"        .15
Duels   .07
5"         .06

Question 17

What is the formula for fog nozzle actual GPM

Answer 17

(.1)(sq root of P) (GPM rated)

Question 18

What is the GPM estimated for fog nozzle

Answer 18

GPM rated-(.15) (gpmr)

Question 19

What is the formula for GPM actual tip

Answer 19

29.7 X diameter squared X the square root of the nozzle pressure

Question 20

What do you pump a master stream Straight tip at?

Answer 20

80PSI

Question 21

What is the friction loss for a wye and Siamese

Answer 21

10 PSI

Question 22

How high will 1 psi raise water

Answer 22

2.3 ft

Question 23

Add how many PSI for each floor above the first

Answer 23

5 PSI

Question 24

PDP

Answer 24

TFL+-HP+NP

Question 25

What is the GPM formula for a sprinkler head

Answer 25

.5P + 15

Question 26

What is the friction loss for stand pipe

Answer 26

25PSI

Question 27

When flowing between two identical lines to a Siamese how do you figure

Answer 27

Divide the flow by two and figure from there

Question 28

When pumping up or down hill what pressure do you add/subtract

Answer 28

.5 PSI ft

Question 29

What pressure do you pump the sprinkler system

Answer 29

150 psi

Question 30

Where should the engine be when pumping a sprinkler system

Answer 30

At the hydrant to overcome friction loss and the lines between hydrant in the FDC

Question 31

What is the friction loss for a water tower

Answer 31

25 psi

Question 32

What is the formula for determining the net pump pressure

Answer 32

Discharge pressure- intake pressure

Question 33

What is the formula for determining net pump pressure at a draft

Answer 33

(Dis pres) +.5 height of lift

Question 34

What is the initial pressure from relay pumping operations

Answer 34

150 psi

Question 35

What is the shutdown procedure for relay pumping

Answer 35

Attack engine throttle down take the pump out of gear and lets the water continue to flow. The next engine follows the same procedure in addition to opening an additional discharge, this continues until the source engine is reached and shut down

Question 36

Where is the largest capacity pump replaced in a pumping operation? Smallest?

Answer 36

Largest at source | Smallest as fire attack or last

Question 37

How do you figure pressure available to overcome friction loss

Answer 37

Available pressure -20 PSI

Question 38

How do you figure percent drop

Answer 38

Static pressure minus residual pressure times 100 divided by static pressure

Question 39

``` Pumping like lines decrease in intake pressure: 0 to 10% 10.01-15% 15.01-25% 25.01+ ```

Answer 39

3 2 1 Less than 1

Question 40

What is the formula for determining the nozzle reaction on a tip

Answer 40

29.7 diameter squared times the square root of the nozzle pressure

Question 41

What is the formula for determining the nozzle reaction on the

Answer 41

.05 times the GPM times the square root of the nozzle pressure

Question 42

What is the formula for determining GPM at a hydrant

Answer 42

29.7 times diameter squared times the square root of the nozzle pressure times .09 for friction loss in the hydrant

Question 43

What is the formula for determining the available flow at 20 PSI from hydrant

Answer 43

Square root of static -20 divided by static minus residual times the observed flow times .9

Question 44

What is the formula for determining gallons in a cylindrical tank

Answer 44

diameter squared times six times length

Question 45

What is the formula for determining gallons in a rectangular tank

Answer 45

Length times with times height times 7.5 gallons per cubic foot

Question 46

How much is a gallon of water weigh

Answer 46

8.33 pounds

Question 47

What percent foam do we apply AFFF to a petroleum fire

Answer 47

3%

Question 48

What percent do we apply AFFF to a polar solvent fire

Answer 48

6%

Question 49

What is the formula for determining how much Light water will be required

Answer 49

Gallons times minutes times percent mix

Question 50

Gallons per minute for light water

Answer 50

Minutes times percent mix

Question 51

What is the normal layout for a helitack operation? What pressure is delivered to the kamlock? What is the GPM at the kamlock

Answer 51

3" to wye to 3" to kamlock and 1 3/4 protection line 15 PSI NP 340 GPM

Question 52

What is the friction loss per hundred feet of 3 inch in helitack operation

Answer 52

10 PSI per hundred feet

Question 53

How many gallons in one cubic foot of water

Answer 53

7.5 gallons

Question 54

How much does a cubic foot of water weigh

Answer 54

62.48 pounds

Question 55

How do we roundoff numbers for calculations

Answer 55

Round two places for calculations round one place for the answer