Table 4

Discharges predicted for different crest heads (graphical approach – original CBC weir)

Sr. No.y2 (cm)Head above weir crest (y2-y), h (cm)Qth (lps) for corresponding step sizeQexpt (lps)QCFD (lps)
6.568 4.868 2.006362 1.7726 2.08152 
7.725 6.025 2.793892 2.3976 2.85783 
8.714 7.014 3.592716 3.16404 3.69058 
9.589 7.889 4.396016 4.02057 4.55732 
10.38 8.68 5.200214 4.93904 5.44589 
11.107 9.407 6.004676 5.90393 6.35052 
11.78 10.08 6.805163 6.90022 7.26305 
12.41 10.71 7.603101 7.92266 8.18271 
13 11.3 8.392988 8.95894 9.10133 
10 13.57 11.87 9.195242 10.0324 10.0415 
Sr. No.y2 (cm)Head above weir crest (y2-y), h (cm)Qth (lps) for corresponding step sizeQexpt (lps)QCFD (lps)
6.568 4.868 2.006362 1.7726 2.08152 
7.725 6.025 2.793892 2.3976 2.85783 
8.714 7.014 3.592716 3.16404 3.69058 
9.589 7.889 4.396016 4.02057 4.55732 
10.38 8.68 5.200214 4.93904 5.44589 
11.107 9.407 6.004676 5.90393 6.35052 
11.78 10.08 6.805163 6.90022 7.26305 
12.41 10.71 7.603101 7.92266 8.18271 
13 11.3 8.392988 8.95894 9.10133 
10 13.57 11.87 9.195242 10.0324 10.0415 
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