Chapter 11 Static Water Supply Sources Flashcards

1
Q

The maximum height of lift when drafting is affected by….

A

The angle of the intake hose

The amount of negative pressure the priming device can produce

The existing atmospheric pressure

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2
Q

For every 1000 feet of altitude, atmospheric pressure reduces by…

A

.5 psi

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3
Q

What is the formula for determining maximum lift

A

L= 1.13 Hg

L is height of lift in feet

1.13 is a constant

Hg is inches of mercury

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4
Q

How many feet (at least) of dependable lift should a typical pumper have if it’s working properly?

A

14.7 feet

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5
Q

Name the pressure correction formula

A

PC= lift + total intake hose friction loss/2.3

Pc is pressure correction in psi

Lift is lift required in feet

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6
Q

Floating strainers may be used for drafting water as shallow as?

A

1 foot

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7
Q

What could you used to damn up water from a small stream?

A

A ladder and salvage cover

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8
Q

How many gallons can a cistern hold up to?

A

It’s connected to storm drains and can hold between 10,000-100,000 gallons

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9
Q

Name the formula for determining the capacity of a SQUARE swimming pool

A

C=7.5LW*D

C is capacity in gallons

7.5 is # of gallons per cubic foot

Length

Width

Average depth

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10
Q

Round pool capacity formula

A

C= 7.5 * pie * r^2 * D

r is the radius in feet

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