CHAPTER 8:
WATER QUALITY, TREATMENT, AND DISTRIBUTION
Civil Engineering: Problems and Solutions, 15th Edition
To be used as a stand-alone exam review tool or in combination with Civil Engineering: License review,
this guide provides an opportunity to practice solving problems that mirror the scope and difficulty of the Civil Engineering Exam.
Civil Engineering: Problems and Solutions, 15th Edition
By Donald G. Newnan (ed)
Chapter 8:
Water Quality, Treatment, and Distribution
Kenneth J. Williamson
PROBLEMS
8.1
A city uses a nearby river for a water source and pumps the water to the distribution system and to a storage tank. The required hourly flow rates for the maximum daily use are
Time of Day
Flow Rate (gpm)
12 PM
0
2 AM
4,000
4 AM
8,000
6 AM
12,000
8 AM
12,000
10 AM
12,000
12 noon
12,000
2 PM
12,000
4 PM
12,000
6 PM
12,000
8 PM
8,000
10 PM
4,000
The maximum daily flow rate required for this system is
6000 gpm
8000 gpm
9000 gpm
10,000 gpm
The storage requirements to supply the maximum daily flow, if a constant pumping rate is set at 10,000 gpm, is
more than 6 MG
from 4 to 6 MG
from 2 to 4 MG
from 1 to 2 MG
If the fire flow is determined to be 6000 gpm, then
the design flow would be 15,000 gpm
the design flow could be less than, equal to, or greater than 15,000 gpm
the required duration for the fire flow would be about 6 hours
both (a) and (c)
If a pumping rate of 8000 gpm was used on the maximum day, the storage tank would fill
from 6 AM until 8 PM
from 4 AM until 8 PM
from 8 PM until 6 AM
from 8 PM until 4 AM
If the elevation of the load center is 40 ft above the water source, the height of the water above the water...
Copyright Kaplan AEC Education 2004 under license agreement with Books24x7