# Chapter 11 - Static Water Supply Sources Flashcards Preview

## IFSTA Pumping and Aerial Apparatus Driver/Operator Handbook - 3rd Edition > Chapter 11 - Static Water Supply Sources > Flashcards

Flashcards in Chapter 11 - Static Water Supply Sources Deck (18)
1
Q

____ is the difference in elevation between the surface of the static water supply and the center of the pump intake.

A

Lift

2
Q

The maximum height of the lift is affected by the ______ of the intake hose, by the amount of ______________ (vacuum) that the priming device can provide, and the existing ___________________.

A

Angle
Negative pressure
Atmospheric pressure

3
Q

For every _____ feet of altitude, the atmospheric pressure decreases by approximately ___ psi.

A

1,000 feet

0.5 psi

4
Q

Pumpers can not be expected to draft water that is located _____ feet below the level of the pump.

A

33.9 feet

5
Q

Variables affecting maximum lift include the _________ pressure, the condition of the ____________, and the _______, _______, and all ______.

A

Atmospheric
Fire pump and primer
Intake hose, gaskets and all valves

6
Q

In most circumstances, maximum lift is approximately ___ feet.

A

25 feet

7
Q

Equation for determining maximum lift:

A

L = 1.13 Hg

Hg - Gauge reading in inches Hg

8
Q

Every fire pump that is operating properly should have a dependable lift of at least ____ feet.

A

14.7 feet

9
Q

All fire department pumping apparatus are rated when drafting with a minimum lift of __ feet from the center of a pump intake to the surface of water through ___ feet of hard intake hose.

A

3 feet

20 feet

10
Q

The pump may only deliver about ___ percent of its capacity if the lift is increased by ___ feet to a 15-foot lift, and ___ percent at 20-foot lift.

A

70%
5 ft
60%

11
Q

Formula for Pressure Correction

A

PC = (Lift + Total Intake Hose Friction Loss) / 2.3

```Lift = Required lift in feet
TIHFL = Number from table 11.2```
12
Q

Formula for Net Pump Discharge Pressure at Draft

A

NPDP = PDP + PC

```PDP = Pump Discharge Pressure
PC = Pressure Correction```
13
Q

Floating pumps placed in adequate water source can develop and maintain a flow of up to ___ gpm.

A

500 gpm

14
Q

Common artificial static water supply sources include:

5

A
```> Cisterns
> Private water storage tanks
> Ground reservoir
> Swimming Pools
> Agricultural irrigation systems```
15
Q

Cisterns typically range from ______ to _______ gallons

A

10,000 to 100,000 gallons

16
Q

Formula for square/rectangular Pool Capacity:

A

C = 7.5 x L x W x D

7.5 = # of gallon per cubic foot

17
Q

Formula for round Pool Capacity

A

C = 7.5 x π x r² x D

7.5 = # gallons per cubic foot

18
Q

Agricultural irrigation systems in some jurisdictions may flow in excess of _____ gpm and may function as a potential water source for fire protection.

A

1,000 gpm.