A combined sewer of circular section is to be laid to serve an area of 100 ha with a population of 90,000 supplied with water at 200 litres per day. Assuming an impermeability factor of 0.50 and time of concentration of rainfall 't as 20 minutes. Calculate the size of the sewer when it has to run full with a velocity of 0.3 m/s. Assume suitable coefficients for 'a' and 'b' in the equation for R, intensity of rainfall relating to 't', the time of concentration.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A combined sewer of circular section is to be laid to serve an area of 100 ha
with a population of 90,000 supplied with water at 200 litres per day. Assuming an impermeability factor
of 0.50 and time of concentration of rainfall 't as 20 minutes. Calculate the size of the sewer when it
has to run full with a velocity of 0.3 m/s. Assume suitable coefficients for 'a' and 'b' in the equation for
R, intensity of rainfall relating to 't', the time of concentration.
Transcribed Image Text:A combined sewer of circular section is to be laid to serve an area of 100 ha with a population of 90,000 supplied with water at 200 litres per day. Assuming an impermeability factor of 0.50 and time of concentration of rainfall 't as 20 minutes. Calculate the size of the sewer when it has to run full with a velocity of 0.3 m/s. Assume suitable coefficients for 'a' and 'b' in the equation for R, intensity of rainfall relating to 't', the time of concentration.
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