11. In the TO, where are water

16. For a length of pipe with a

distribution lines normally placed?

coefficient of friction (c) of 100,

a. cross-country

what minimum diameter pipe will you

b. adjacent to roadways

select (only 2-, 3-, 4-, and 5-inch

c. shortest route

pipe are available) for a flow rate

d. adjacent to streams

of 100 gallons per minute and a

maximum headloss of 10 feet of

12. You are installing a water

water in its 500-foot length?

distribution system whose pipe has

a. 2

c. 4

a maximum safe pressure rating of

b. 3

d. 5

120 pounds per square inch.

What

is the maximum elevation difference

17. What is the smallest pipe size

in feet that you can have between

(in inches) that can be used for a

the tank and the lowest point in

flow of 70 gallons per minute, a

the system?

coefficent of friction (c) of 150,

a. 248

c. 277

and a headloss of 5 feet of water

b. 263

d. 289

in its 1,000-foot length?

a. 3

c. 5

13. For population of 1,850 men,

b. 4

d. 6

what is the total peak water demand

in

gallons

per

minute

for

a

18. Figure

17

shows

a

water

facility containing 10 outlets and

distribution system.

The peak

21 shower heads?

demands for each of the buildings

a. 26

c. 39

are shown below.

b. 34

d. 43

14. What is the allowable headloss

in feet of water from the storage

tank to the service connection if

the tank elevation is 265 feet, the

service connection elevation is 141

feet, and 25 psi is required at the

connection?

a. 41

c. 59

b. 53

d. 66

15. What will be the flow in

What is the peak flow in gallons

gallons per minute for a section of

per minute the line from C to D

7-inch pipe if the headloss is 5

must be able to carry?

feet of water in its 1,000 foot

a. 200

c. 230

length

and

the

coefficient

of

b. 225

d. 255

friction is 100?

a. 210

c. 270

b. 240

d. 300