In designing a sewer an engineer selects a diameter of 300 mm and a slope that yields a velocity of 0.6 m/s when flowing full. This design satisfactorily handles the flow rate at the end of the design period with self-cleansing action. However, he neglected to check the operating conditions at the beginning of the design period, when the flow rate is expected to be 10 L/s. Assuming n = 0.013, find: a) The actual velocity when q = 10 L/s b) If there is self-cleansing at q = 10 L/s. If the answer is no, Find the clone that should be used to have calf cleansing of the

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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2.
In designing a sewer an engineer selects a diameter of 300 mm and a slope that yields a
velocity of 0.6 m/s when flowing full. This design satisfactorily handles the flow rate at
the end of the design period with self-cleansing action. However, he neglected to check
the operating conditions at the beginning of the design period, when the flow rate is
expected to be 10 L/s. Assuming n = 0.013, find:
a)
The actual velocity when q = 10 L/s
b)
If there is self-cleansing at q = 10 L/s. If the answer is no,
c)
Find the slope that should be used to have self-cleansing at the beginning of the
design period.
Transcribed Image Text:2. In designing a sewer an engineer selects a diameter of 300 mm and a slope that yields a velocity of 0.6 m/s when flowing full. This design satisfactorily handles the flow rate at the end of the design period with self-cleansing action. However, he neglected to check the operating conditions at the beginning of the design period, when the flow rate is expected to be 10 L/s. Assuming n = 0.013, find: a) The actual velocity when q = 10 L/s b) If there is self-cleansing at q = 10 L/s. If the answer is no, c) Find the slope that should be used to have self-cleansing at the beginning of the design period.
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