Civil Engineering - Hydraulics - Discussion

2. 

The thickness of a sharp crested weir is kept less than

[A]. one-third of the height of water on the sill
[B]. one-half of the height of water on the sill
[C]. one-fourth of the height of water on the sill
[D]. two-third of the height of water on the sill
[E]. none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Navid said: (Apr 22, 2014)  
In a sharp-crested weir, the thickness of weir is kept less than half of the height of water on the weir.

Sourav said: (Jan 19, 2017)  
2L < H.
L < H/2.
= length of sharp - crested weir.

Kamal Jamare said: (Jul 10, 2018)  
L=H÷2.

Length of sharp, hight of water in the weir.

Shyam Kumar said: (Jun 23, 2019)  
Please, explain it why?

Roop Sudarshan Raju said: (Mar 9, 2020)  
In a sharp-crested weir, the thickness of the weir is kept less than half of the height of water on the weir.

B<H/2.
B = thickness of the weir.
H = height of water above the crest of the weir.

The Discharge equation for a sharp-crested weir remains the same as that of rectangular weir & rectangular notch.

Q = 2/3 Cd X b Root of 2g X H2/3.

Rudy said: (Jul 28, 2020)  
The thickness of a sharp-crested weir is generally much thinner such as in using a Plate.

Kavita Choudhary said: (Aug 5, 2021)  
In a sharp-crested wear, the thickness of the wear should be less than half of the water of wear.

Q= 2/3CdL √2g h3/2.

Kavita said: (Aug 5, 2021)  
The thickness of the shaft crested wear kept less than half of the height of the water on the wear B<H/2.

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