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Driver’s Test > Hydraulics Manual > Flashcards

Hydraulics Manual Flashcards

1
Q

1 cubic foot

A

1728 cubic inches

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2
Q

1 cubic ft

A

7.5 gallons

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3
Q

1 cubic ft of fresh water

A

62.5 lbs

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4
Q

1 gallon

A

231 cubic inches

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5
Q

1 gallon fresh water

A

8.33 lbs

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6
Q

Column of water 1 ft high

A

0.434 psi at it’s base

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7
Q

Column of water 2.304 ft

A

1 psi at it’s base

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8
Q

50 ft of 1.75

A

6.24 gal of water

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9
Q

50’ of 1.88

A

7.3 gal of water

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10
Q

50 ft of 2.5

A

12.74 gal

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11
Q

50’ of 3”

A

18.35 gal

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12
Q

100’ of 4”

A

65.25 gal

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13
Q

100’ of 5”

A

101.94 gal

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14
Q

Handline with smooth bore

A

50-65 psi

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15
Q

Master Stream with smooth bore

A

80-100 psi

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16
Q

Head pressure

For each ft above the pump

A

0.434 psi

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17
Q

Master steam

A

350 gal +

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18
Q

Rectangular shaped containers

A

L x W x D x 7.5

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19
Q

Cylindrical containers

A

Pi x R2 x H2(L) x 7.5 gal

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20
Q

Smooth bore nozzle discharge

A

GPM=29.7 x D2 x sqrt np

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21
Q

1” adjustable gallonage fog nozzle

A

5312-16 gpm

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22
Q

1 ½” Akron assault

A

175 gpm

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23
Q

2 ½” Akron fog

A

125-250 gpm

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24
Q

Akron quick attack mercury

A

50 gpm

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25
Q

Master stream fog

A

150-2000 gpm

26
Q

Booster reel

A

150’ long 1” line

12-60 gpm 100 psi

27
Q

1” forestry line

A

50 and 100’ sections
12-60 gpm
22 gpm red nozzle 100 psi

28
Q

Decon shower

A

270 gpm

75 psi

29
Q

Piercing nozzle

A

125 gpm

100 psi

30
Q

Distributor nozzle

A

2 ½” 250 gpm 100 psi

1 ½” 95 gpm 50 psi

31
Q

Cellar nozzle

A

2 ½ 350 gpm 100 psi

1 ½ 160 gpm 100 psi

32
Q

Smooth bore break away tips

A

1 ⅜ 1 ½ 1 ¾. 2

      1. 1000
      1. 120
33
Q

Ground monitor

A

Smooth bore 500- 1000 gpm

Fog 350 - 1350 gpm

34
Q

Total pressure loss

1st principle

A

Doubling length of hose doubles FL

35
Q

Akron quick attack mercury

A

1 ⅜” tip
Max inlet pressure 150 psi
2 ½” inlet and outlet

36
Q

Task force tip auto nozzle

A

150-1250 gpm
Gpm 500 750 1000 1250
Psi. 90 110. 120. 140

37
Q

Akron adjustable flow nozzle

A

400 - 1250 gpm
Gpm 500 750 1000 1250
Psi. 100 110 130. 140

38
Q

Total pressure loss

2nd principle

A

Flow rate doubled

FL x 4

39
Q

Total pressure loss

3rd principle

A

FL decrease, diameter increase

FL varies inversely to the 5th power as the diameter of the hose

40
Q

Total pressure loss

4th principle

A

Velocity of water through a hose line causes friction loss

41
Q

Overcome friction loss by

A

Increase pump pressure

42
Q

Column of water exerts a pressure of

A

0.434 at it’s base

43
Q

Basic pump operators formula

A

Pdp=np+tpl

44
Q

Total pressure loss

45
Q

National foam js-10

A

100 gpm

100 psi

46
Q

Portable foam educator

A 
95-125 gpm 
200 psi 
50’ to eductor
200’ to nozzle
5’ elevation
47
Q

Akron truck mount

In line educator

A

200 psi at the eductor

48
Q

Husky foam system

A

0.1-3%
3 gpm
150 psi

49
Q

CAFS for fire attack

A

⅔ water
⅓ water
Foam 0.3%

50
Q

CAFS for overhaul and exposure

A

⅔ air
⅓ water
Class A 0.5%

51
Q

Max flows from a draft

A

Side intake: 1750 gpm
Rear intake 1500-1759 gpm
Front 900 gpm

52
Q

CAFS info

A 
Class A or CAFS
5 discharges: leader line 
                        Blitz line
                        Crosslays
                        Bumper line 
2 hrs without overheating
Supply with water, class A, CAFS
53
Q

CAFS info 2

A

Hose lines are lighter
15/16” best finisher product
Bleed longer than normal

54
Q

CAFS disadvantage

A

Lines cracked at all times
Kink more easily
250’ for max effectiveness

55
Q

Max flow

A

1500 gpm at 150 psi

56
Q

Multiple supply lines

A

Two 3”=0.3
4” and 3”= 0.09
Two 4”= 0.05

57
Q

Like volumes

A

(S-R)100/S

0-10%=3x
11-15%= 2x
16-35%= 1x
>25%=<1

58
Q

Nozzle reaction

Smooth bore

A

1.57xD2xNP

59
Q

Nozzle reaction

Fog stream

A

0.0505 x Q2 x sqrt np

60
Q

Flow through the pump

A

Pump gear if pressure >50 psi

Driver’s Test (6 decks)

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