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Flashcards in 5. Principle Of Water Deck (12)
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1

Water freezing point and boiling point

32°F

212°F

2

$$$

Water weight:

8.3 lb/gal

62.4 lb/ft3

3

$$$

At ___°F, water converted to steam occupies approximately ___ times its original volume, helping to dissipate heat in the well vented room

212 Fahrenheit

1700 times

4

Atmospheric pressure at sea level is ___ psi

14.7 psi

5

Head pressure

For every 1 foot increase in elevation .434 psi is gained

6

$$$

__ pressure Is the portion of total available pressure not used to overcome friction loss or gravity while forcing water though pipes, fittings, hoses, or adapters.

Residual pressure

7

$$$

Above sea level atmospheric pressure decreases approximately __psi for every 1000 feet

0.5 psi

8

$$$

The friction lost in older hoes may be as much as __% greater than that of new hose.

50%

9

$$$

The rougher the inner surface of the pipe the greater the friction loss will be

Coefficient of friction

10

Agitation causes a degree of turbulence known as __

Critical velocity

11

A fire hydrant that receives water from only One direction is known as a ___ hydrant

Dead end

12

When a fire hydrant receives water from two or more directions it is said to have

Circulating feed or a looped feed