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The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = H + Ha)
(H1 = Total height of water above the weir, H = Height of water over the crest of the weir and Ha = Height of water due to velocity of approach)

The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = H + Ha)
(H1 = Total height of water above the weir, H = Height of water over the crest of the weir and Ha = Height of water due to velocity of approach) Correct Answer $$\frac{2}{3}{{\text{C}}_{\text{d}}} \times {\text{L}}\sqrt {2{\text{g}}} \left$$

Related Questions

A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
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Statement (I): The ogee spillway is a control weir having an S-shaped crest profile which provides a high discharge coefficient without causing cavitations. Statement (II): The crest profile of ogee spillway conforms to the lower nappe of flow over a ventilated sharp-crested weir and ensures a constant discharge coefficient for all heads.
A weir is said to be narrow-crested, if the width of the crest of the weir is Where H = height of water above weir crest
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The head of water over a rectangular weir is 38 cm. The length of the crest of the weir end contraction suppressed is 1.3 m. Find the discharge using the Francis formula.
The head of water over a rectangular weir is 28 cm. The length of the crest of the weir end contraction suppressed is 1.27 m. Find the discharge using the Francis formula.
The head of water over a rectangular weir is 26 cm. The length of the crest of the weir end contraction suppressed is 1.25 m. Find the discharge using the Francis formula.
P. A weir is a hydraulic structure where majority or the entire ponding is achieved by a raised crest and smaller part or nil part by the shutters. Q. A weir is a hydraulic structure that is made by constructing the width of the channel only. R. A barrage is a hydraulic structure that is made by creating a choking condition only. S. A barrage is a hydraulic structure where majority or the entire ponding is achieved by a shutter and smaller part or nil part by the raised crest. Identify the correct statements in the above.
The discharge passing over an ogee spillway is given by (where, L is effective length of spillway crest and H is the total head over the spillway crest including velocity head.)