Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

AFR: Driver Training > Hydraulic Calculations > Flashcards

Hydraulic Calculations Flashcards

1
Q

Fire Stream Definition

A

A stream of water or other extinguishing agent after it leaves a fire hose and nozzle until it reaches the desire point.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Fire Stream Condition:

During the time a fire stream passes through space, it is influenced by four things:

A
  • Velocity
  • Gravity
  • Wind
  • Friction with air
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Fire Stream Condition:

The condition of the stream when it leaves the nozzle is influenced by four things:

A
  • Operating pressure
  • Nozzle design
  • Nozzle adjustment
  • Condition of the nozzle orifice
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Handline Nozzle Specs

A

-Solid, fog, or broken stream

3/4” to 3”

-Flows up to 350 GPM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Master Stream Nozzle Specs

A
  • Solid or Fog
  • Used when handlines are undesirable
  • Flows greater than 350 GPM
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

GPM formula

A

29.7 (D²) (√NP)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Akron Piercing Nozzle PSI/GPM

A

100 PSI

125 GPM

Max pressure 200 PSI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Max Operating Pressure of 1 3/4” & 2 1/2” Hose

A

275 PSI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Max Operating Pressure of 5” Hose (yellow/green)

A

Yellow: 185 PSI

Green: 275 PSI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Friction Loss 5” hose at 1,000 GPM

A

8 PSI/100’

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Friction Loss 5” hose at 2,000 GPM

A

32 PSI/100’

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Appliance Pressure (Hoseline Appliances)

A

≥ 350 GPM = 10 PSI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Appliance Pressure (Master Stream Appliances)

A

15 PSI for all

  • deck guns
  • portable monitors
  • aerial master stream
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Elevation Pressure

A

0.434 PSI per foot

5 PSI per floor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

PDP (definition/equation)

A

Pump Discharge Pressure

NP + FL + AP +(-) EL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Solid Tip Discharge (GPM) Equation

A

(29.7) (D²) (√NP)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Handline Tip Sizes NP/GPM

A

50 PSI

7/8" - 160 GPM
15/16" - 180
1" - 200
1 1/8" - 250
1 1/4" - 325
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Master Stream Tip Sizes NP/GPM

A

80 PSI

1 1/4" - 400 GPM
1 3/8" - 500
1 1/2" - 600
X 1 5/8" - 700
1 3/4" - 800
X 1 7/8" - 900
2" - 1000
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

SM20 NP/GPM

A

100 PSI

60 - 200 GPM

20
Q

SM30 NP/GPM

A

100 PSI

75 - 325 GPM

21
Q

Akromatic NP/GPM

A

100 PSI

500 - 2000 GPM

22
Q

TFT Metro NP/GPM

A

1 3/4” lines

50 PSI

150 GPM

23
Q

TFT Metro 2

A

2 1/2” Lines only

50 PSI

250 GPM

24
Q

Broken Stream Nozzles NP

A

100 - 150 PSI

25
Q

Akron Piercing Nozzle GPM/PSI/Max Operating Pressure

A

125 GPM @ 100 PSI

Max Operating Pressure: 200

26
Q

Vindicator (Handline) Tip Sizes NP/GPM 1 3/4” & 2 1/2”

A

1 3/4”
250 GPM @ 50 PSI
425 GPM @ 100 PSI

2 1/2”
325 GPM @ 50 PSI
500 GPM @ 100 PSI

27
Q

Vindicator (Masterstream) NP/GPM

A

1000 GPM @ 85 PSI

675-1000 GPM for monitors

28
Q

Nozzle Operating Pressures (for calculations)

  • Solid Tip/Vindicator
  • Solid Tip Master Streams
  • Vindicator Master Stream
  • ALL Fog Streams
  • All TFT Fog Stream Handlines

-Broken Stream

A

-Solid Tip/Vindicator:
50 PSI

-Solid Tip Master Streams:
80 PSI

  • Vindicator Master Stream:
    85 PSI

-ALL Fog Streams:
100 PSI
-All TFT Fog Stream Handlines:
50 PSI

-Broken Stream:
100-150 PSI

29
Q

Nozzle Pressure/Reaction Formulas

  • Solid Tip
  • Fog Tip
A
  • Solid Tip
    (1. 57) (D²) (NP)
  • Fog Tip
    (0. 0505) (GPM) (√NP)
30
Q

Friction Loss Equation

A

C (Q/100)² (L/100)

31
Q

Friction Loss Coefficients by Hose Size

A

1 3/4” - 15.5
2 1/2” - 2
5” - 0.08

32
Q

Friction Loss GPM/PSI per Hundred Feet 1 3/4” Hose

A 
100 GPM: 15 PSI
125 GPM: 25 PSI
150 GPM: 35 PSI
175 GPM: 45 PSI
200 GPM: 65 PSI
33
Q

Appliance Pressure

- Hoseline Appliance 
- Master Stream Appliances
A

-Hoseline Appliance:
≥ 350 GPM = 10 PSI

-Master Stream Appliances
15 PSI for all deck guns, portable monitors, aerial master streams

34
Q

Elevation Pressure

A

0.434 PSI per foot

5 PSI per floor (remember first floor doesn’t count)

35
Q

PDP/Max Pressure for Deck Gun

A

PDP = NP + AP

Max Flow = 1,250 GPM

15 PSI friction loss for appliance

36
Q

PDP Formula for Portable Monitor

A

15 PSI friction loss for appliance

Add friction loss for supply hose and nozzle pressure

Max Pressure 200 PSI

37
Q

2 1/2” Portable Monitor Max GPM/Footage for Single Line vs. Double

A

-Single Line
500 GPM max, 400’ max

-Double LIne
800 GPM max, 600’ max

38
Q

5” Portable Inlet Monitor Max GPM/Footage of hose

A

1,000 GPM max, 1,100’ max

39
Q

Akron Mercury 500 Specs

A

1 3/8” Tip, 1 1/2” Tip

80 PSI NP for 1 3/8” Tip

500 GPM Max

One 2 1/2” line laid straight, at least 10’ to monitor

40
Q

Aerial Master Stream Specs/Considerations

A
  • Usually fog nozzle (100 PSI), Solid Tip (80 PSI), Ladder 5 fog = 85 PSI
  • Do not exceed max pressure for 5” hose (185 PSI) unless high pressure green (275 PSI)
  • Add 15 PSI for aerial device, if siamese is being utilized on aerial inlet add another 10 PSI
  • Add 5 PSI for every 10’ of elevation above ground
41
Q

AFD Standpipe Operations

A
  • Establish adequate water supply w/ 5” hose
  • At minimum two 2 1/2” handlines should be connected to the FDC, driver should keep hoselines as short as possible (100’ Max)
  • Charge system to 100 PSI plus 5 PSI per floor above the first floor
  • Coordinate with officer on the fire floor to determine pressure changes, coordinate with firefighter on floor below fire to set pressure at 65 PSI
42
Q

Sprinkler Systems

A

2 1/2” hoselines in 50’ sections to reduce FL

-Maintain PDP of 150 PSI

43
Q

NFPA Percentages/Rated Standards of pumps/capacity

A

100% capacity @ 150 PSI

70% capacity @ 200 PSI

50% capacity @ 250 PSI

44
Q

Hydrant Capacity Formula

A

Static pressure - residual pressure

Divide static by 10, multiply by 1, 2, and 3

Find number that is ≥ difference between static and residual pressure

45
Q

Fire Flow Formula

A

GPM’s needed (NFF) = (area/3) (% of structure involved)

Area (length times width) divided by three, then multiply by percent of structure involved

AFR: Driver Training (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions