Chapter 11 Static Water Supply Sources

Question 1

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

Answer 1

The angle of the intake hose

The amount of negative pressure the priming device can produce

The existing atmospheric pressure

Question 2

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

Answer 2

.5 psi

Question 3

What is the formula for determining maximum lift

Answer 3

L= 1.13 Hg

L is height of lift in feet

1.13 is a constant

Hg is inches of mercury

Question 4

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

Answer 4

14.7 feet

Question 5

Name the pressure correction formula

Answer 5

PC= lift + total intake hose friction loss/2.3

Pc is pressure correction in psi

Lift is lift required in feet

Question 6

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

Answer 6

1 foot

Question 7

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

Answer 7

A ladder and salvage cover

Question 8

How many gallons can a cistern hold up to?

Answer 8

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

Question 9

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

Answer 9

C=7.5LW*D

C is capacity in gallons

7.5 is # of gallons per cubic foot

Length

Width

Average depth

Question 10

Round pool capacity formula

Answer 10

C= 7.5 * pie * r^2 * D

r is the radius in feet