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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)
1 6.568 4.868 2.006362 1.7726 2.08152 
2 7.725 6.025 2.793892 2.3976 2.85783 
3 8.714 7.014 3.592716 3.16404 3.69058 
4 9.589 7.889 4.396016 4.02057 4.55732 
5 10.38 8.68 5.200214 4.93904 5.44589 
6 11.107 9.407 6.004676 5.90393 6.35052 
7 11.78 10.08 6.805163 6.90022 7.26305 
8 12.41 10.71 7.603101 7.92266 8.18271 
9 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)
1 6.568 4.868 2.006362 1.7726 2.08152 
2 7.725 6.025 2.793892 2.3976 2.85783 
3 8.714 7.014 3.592716 3.16404 3.69058 
4 9.589 7.889 4.396016 4.02057 4.55732 
5 10.38 8.68 5.200214 4.93904 5.44589 
6 11.107 9.407 6.004676 5.90393 6.35052 
7 11.78 10.08 6.805163 6.90022 7.26305 
8 12.41 10.71 7.603101 7.92266 8.18271 
9 13 11.3 8.392988 8.95894 9.10133 
10 13.57 11.87 9.195242 10.0324 10.0415 
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