A 450 mm diameter culvert has been designed to convey a discharge of Q = 0.55 m3/s of storm-water under a residential road. The culvert is 37.5 m long and has a slope of 1.3%. The downstream flow depth was obtained as 0.35 m from a hydraulic analysis. You are required to determine:1.1 the head required to convey the discharge through the culvert at full flow conditions;(a) If concrete pipe is used with a Manning’s roughness coefficient of n = 0.0155 with an inlet headwall of socket type. (b) If corrugated steel pipe is used with a Manning’s roughness coefficient n=0.024 with an inlet headwall of square edge design. 1.2 What is the corresponding headwater depth in 1.1 (a) and (b) above?
A 450 mm diameter culvert has been designed to convey a discharge of Q = 0.55 m3/s of storm-water under a residential road. The culvert is 37.5 m long and has a slope of 1.3%. The downstream flow depth was obtained as 0.35 m from a hydraulic analysis. You are required to determine:1.1 the head required to convey the discharge through the culvert at full flow conditions;(a) If concrete pipe is used with a Manning’s roughness coefficient of n = 0.0155 with an inlet headwall of socket type. (b) If corrugated steel pipe is used with a Manning’s roughness coefficient n=0.024 with an inlet headwall of square edge design. 1.2 What is the corresponding headwater depth in 1.1 (a) and (b) above?
Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter7: Seepage
Section: Chapter Questions
Problem 7.7CTP
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Question
A 450 mm diameter culvert has been designed to convey a discharge of Q = 0.55 m3
/s of
storm-water under a residential road. The culvert is 37.5 m long and has a slope of 1.3%. The
downstream flow depth was obtained as 0.35 m from a hydraulic analysis. You are required
to determine:
1.1 the head required to convey the discharge through the culvert at full flow conditions;
(a) If concrete pipe is used with a Manning’s roughness coefficient of n = 0.0155 with an
inlet headwall of socket type.
(b) If corrugated steel pipe is used with a Manning’s roughness coefficient n=0.024 with
an inlet headwall of square edge design.
1.2 What is the corresponding headwater depth in 1.1 (a) and (b) above?
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