Question: Consider the rectangular weir described in Prob. 13.50. When the head is doubled, the discharge is (a) Doubled, (b) Less than doubled (c) More than

Consider the rectangular weir described in Prob. 13.50. When the head is doubled, the discharge is

(a) Doubled,

(b) Less than doubled

Data from Prob. 13.50

A 3 m long rectangular weir is to be constructed in a 3 m wide rectangular channel, as shown (a). The maximum flow in the channel will be 4 m³/s. What should be the height P of the weir to yield a depth of water of 2 m in the channel upstream of the weir?

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