p) A reservoir has a plan area of 100,000 m². The discharge from the reservoir passes over a long rectangular broad-crested weir similar to that shown in Figure 1 below and having the following dimensions: b = 15 m, Ps = 1.1 m, L= 2 m. i) Determine a coefficient of discharge for this weir and use it to estimate the discharge over it if the reservoir level is 1.5 m above the weir crest. ii) If there is no inflow into the reservoir, estimate the time taken for the reservoir level to fall from 1.5 m to 1.0 m above the weir crest. Assume that Ca remains constant.

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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b) A reservoir has a plan area of 100,000 m². The discharge from the reservoir passes over a
long rectangular broad-crested weir similar to that shown in Figure 1 below and having the
following dimensions:
b = 15 m, Ps =1.1 m, L = 2 m.
%3D
i) Determine a coefficient of discharge for this weir and use it to estimate the discharge
over it if the reservoir level is 1.5 m above the weir crest.
ii) If there is no inflow into the reservoir, estimate the time taken for the reservoir level to
fall from 1.5 m to 1.0 m above the weir crest. Assume that Cd remains constant.
Ps
Figure 2 - Question 2 (b)
Transcribed Image Text:b) A reservoir has a plan area of 100,000 m². The discharge from the reservoir passes over a long rectangular broad-crested weir similar to that shown in Figure 1 below and having the following dimensions: b = 15 m, Ps =1.1 m, L = 2 m. %3D i) Determine a coefficient of discharge for this weir and use it to estimate the discharge over it if the reservoir level is 1.5 m above the weir crest. ii) If there is no inflow into the reservoir, estimate the time taken for the reservoir level to fall from 1.5 m to 1.0 m above the weir crest. Assume that Cd remains constant. Ps Figure 2 - Question 2 (b)
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