Water flows at a rate of 5 m3/s in a rectangular channel width of 10 m. The normal depth of flow in the channel is 5 m. If a sharp crested (suppressed) weir of height 5 m is installed across the channel, determine the new flow depth in the channel for the same flow rate. What would the flow depth be if the rectangular weir were contracted (on both sides) to a width if 7 m? What would the flow depth be if a 7 m wide Cippoletti weir is used?

Water flows at a rate of 5 m3/s in a rectangular channel width of 10 m. The normal depth of flow in the channel is 5 m. If a sharp crested (suppressed) weir of height 5 m is installed across the channel, determine the new flow depth in the channel for the same flow rate. What would the flow depth be if the rectangular weir were contracted (on both sides) to a width if 7 m? What would the flow depth be if a 7 m wide Cippoletti weir is used?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

3.
Water flows at a rate of 5 m3/s in a rectangular channel width of 10 m. The normal depth of
flow in the channel is 5 m. If a sharp crested (suppressed) weir of height 5 m is installed across
the channel, determine the new flow depth in the channel for the same flow rate. What would
the flow depth be if the rectangular weir were contracted (on both sides) to a width if 7 m? What
would the flow depth be if a 7 m wide Cippoletti weir is used?

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