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Calculate Flow (Q) for a Contracted Rectangular Weir (Francis Formula):
 
Calculation:
Designer/Checker:
   
Input:  
   

 
Head on the weir (H - ft or m)
Width of weir (B - ft or m)
   

     
   
   
Output:  
 
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Flow (Q) =
 
 
 
 
 


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