WATER DISTRIBUTION GRADES 1-4 MATH Q PART 2/3 EXAM
ACTUAL QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED LATEST UPDATED VERSION 2026/2027
A fence needs to be 12 posts & 4 rolls
installed that is 88'ft. long.
The posts need to be 8'ft.
apart and the rolls of
fencing come in
25'ft. lengths. How many
posts and rolls of fencing
are required to complete
this job?
If a 12" In. main is flowing at 5.25 fps
a rate of 1,850 GPM, what is
the velocity in feet per
second?
Calculate the chlorine .5 ppm
residual in ppm when the
, applied chlorine dosage is
3.0 ppm and the chlorine
demand is
2.5 ppm.
There are two pumps 1 day, 20 hrs., 54 mins.
flowing into a tank that is
150' ft. in diameter. Pump #1
is flowing at 1.75 CFS and the
pump #2 is flowing at 2.25
CFS. The system has a
demand of 1,550 gallons per
minute. How long will it take
to fill the tank 5 feet from
the current elevation? Give
your answer in days hours
and minutes.
A newly-installed 24" inch 271.22 lbs.
water main needs to be
disinfected using AWWA
ACTUAL QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED LATEST UPDATED VERSION 2026/2027
A fence needs to be 12 posts & 4 rolls
installed that is 88'ft. long.
The posts need to be 8'ft.
apart and the rolls of
fencing come in
25'ft. lengths. How many
posts and rolls of fencing
are required to complete
this job?
If a 12" In. main is flowing at 5.25 fps
a rate of 1,850 GPM, what is
the velocity in feet per
second?
Calculate the chlorine .5 ppm
residual in ppm when the
, applied chlorine dosage is
3.0 ppm and the chlorine
demand is
2.5 ppm.
There are two pumps 1 day, 20 hrs., 54 mins.
flowing into a tank that is
150' ft. in diameter. Pump #1
is flowing at 1.75 CFS and the
pump #2 is flowing at 2.25
CFS. The system has a
demand of 1,550 gallons per
minute. How long will it take
to fill the tank 5 feet from
the current elevation? Give
your answer in days hours
and minutes.
A newly-installed 24" inch 271.22 lbs.
water main needs to be
disinfected using AWWA
