Hydraulics Manual Flashcards
(70 cards)
1
Q
One cubic foot contains (blank) inches
A
1728 cubic inches
2
Q
One cubic foot contains (blank) water
A
7.5 gal
3
Q
One cubic foot of water weighs
A
62.5 lbs
4
Q
One gallon contains (blank) cubic inches
A
231 cubic inches
5
Q
A column of water blank high exerts a pressure of 1 psi
A
2.304 feet
6
Q
50 feet 1.75 inch hose contains gal
A
6.24
7
Q
50 feet 1.88 hose contains gal
A
7.20
8
Q
50 feet of 2.5 inch blank gal
A
12.74
9
Q
50 feet of 3 inch
A
18.35
10
Q
100ft 4 inch
A
65.25
11
Q
100ft 5 inch gal
A
101.94 gal
12
Q
Hand Line 1/2 tip THEORETICAL
A
53
13
Q
Hand line 7/8 tip THEORETICAL
A
161
14
Q
Hand Line 15/16 tip THEORETICAL
A
185
15
Q
Hand Line 1 inch tip THEORETICAL
A
210
16
Q
Hand Line 1 1/8 tip THEORETICAL
A
266
17
Q
Hand Line 1 1/4 tip THEORETICAL
A
328
18
Q
Hand Line 1/2 tip FIREGROUND
A
50
19
Q
Hand Line 7/8 tip Fireground
A
150
20
Q
Hand Line 1 inch tip Fireground
A
200
21
Q
Hand Line 1 1/8 tip FIREGROUND
A
250
22
Q
Hand Line 1 1/4 Fireground
A
325
23
Q
Master Stream 1 1/4 THEORETICAL
A
415
24
Q
Theoretical Master Stream 1 3/8
A
502
25
Theoretical Master Stream 1 1/2
598
26
Master Stream 1 3/4
814
27
Master Stream 2 inch Theoretical
1062
28
smooth Bore GPM FORMULA
29.7d2sqrtNP
29
2.5 Akron Nozzle gpms
125-250 gpm
30
TFT Master Stream Fog nozzle flows
150-2000 gpms
31
Decon shower flow pressure
270 GPMs 75 psi
32
Piercing Nozzle gpms and pressure
125 gpms at 100 psi
33
Cellar nozzle psi and GPMs *cellar bigger than distributor*
2.5. 350 gpms at 100 psi
1.88. 160 gpms at 100 psi
34
Distributor nozzle GPMs and PSI
2.5 250 gpms at 100psi
1.88. 95 gpms at 50 psi
35
Smooth Bore breakaway nozzle psi and gpms MASTER STREAM
1 3/8 500 at 110
1.5 600 at 110
1.75. 800 at 110
2. 1000 at 120
36
TFT automatic Master stream nozzle
150 to 1250 GPMs
500 at 90
750 at 110
1000 at 120
1250 at 140
37
Akron Adjustable Flow Master Stream Nozzle flows
500-1250 GPMs
500 at 100
750 at 110
1000at 130
1250 at 140
38
True or False: Mercury monitor can be used with 4 inch
False
This is a shall not be
39
Mercury Monitor Maximum inlet pressure
150 psi
40
Combination Monitor with the smooth bore attachment flow ranges
500-1000 gpms
41
Combination Monitor with fog nozzle attachment ranges
350 -1250 at 100 psi
42
1st Principle of Friction Loss
All variables being the same, friction loss will vary directly with the length of hose or pipe.
43
2nd Principle of Friction Loss
All variables being the same, the friction loss fairies approximately with the square of the increase in the velocity of the flow.
44
3rd Principle of Friction Loss
When the flow remains constant, the friction loss and a hose will decrease when the diameter of the hose is increased. Friction loss varies inversely to the fifth power as a diameter of the hose.
45
4th Principle of Friction loss
For any given flow velocity, friction loss is independent of pressure. the velocity of water through a hose line, not pressure, causes friction loss.
46
Coefficient for :
1 inch
2 inch
3.5 inch
5 inch
150
8
0.34
0.08
47
Js-10 gpms and Psi
100 gpms at 100 psi
48
FFX county Eductor flow and psi
Include stipulations
95-125 gpms
200 psi at eductor
At least 50 ft from pump panel
And within 200 from nozzle
Elevation limit 5 feet above eductor
49
Around the Pump system
The water is around the pump proportioner allows foam solution to flow from all discharges. The intake pressure should not exceed 10 psi.
50
Husky Foam System
This system is an electronic direct injection foam system. Capable of injecting foam from 0.1 to 3% with a rate capacity of three GPM of foam concentrate at 150 PSI.
51
All Fairfax County pumpers carry minimum of blank gallons of foam
40
52
When operating from static water source with a 1500 GPM pumper, if the pump pressure is increased to 200 psi, the maximum flow decreases to blank GPM.
And if increases to 250psi the maximum flow decreases to what
1050
750
53
What Is The Friction Loss For These Supply Lines
3 + 3 inch
4 + 3 inch
4 + 4 inch
0.2
0.09
0.05
54
What is the formula for available water from fire hydrants 
(STATIC - RESIDUAL)/ Static) x 100
55
When does the driver charge sprinkler systems?
When there is smoke or fire showing or upon confirmation of a working fire 
56
If the FDC is a combination system, when do you charge the FDC? 
Combination systems should be considered as a standpipe and should be charged when arriving on scene 
57
Ariel devices should be provided with their own supply pumper if possible, therefore what are two hose configurations that the Aerial can receive water?
One LDH or 2 x 3 inch supply lines
58
Charge AERIAL lines on orders of the
Truck OIC and Truck Driver
*Command can tell you to get the Master stream in service for defense but ultimately the driver or officer says when to actually charge the PIPE
59
CAFS FOR FIRE ATTACK
2/3 water 1/3 Air
Foam application rate of 0.3%
60
CAFS FOR OVERHAUL AND EXPOSURE
2/3 AIR
1/3 WATER
FOAM APPLICATION RATE 0.5%
61
CAFS AIR COMPRESSOR RUN TIME
2 hours
62
Smooth bore 15/16 vs gated butt for CAFS
Smooth bore fire ATTACK
GATED BUTT FOR OVERHAUL
63
CAFS DISADVANTAGE OF CHARGED LINE
Must leave cracked open at all times to prevent buildup of pressure
64
CAFS MAX LENGTH OF HOSELINE
250 ft
65
Smooth Bore Nozzle Reaction
1.57d2NP
66
Fog Nozzle Raction
0.0505QsqrtNP
67
Side intake maximum flows
1750
68
Rear intake max flows
1500-1750
69
Front Intake Max flows
900
70
Any time the incoming pressure exceeds _____, the pump shall be operated in pump gear
50psi
