A sewer is laid from a manhole A to a manhole B, 250 m away along a gradient of 1 in 125. If the reduced level of the invert at A is 205.75 m and the height of the boning rod is 3 m, the reduced level of the sight rail at B, is« Back to Previous Page
A. 208.75 m
B. 202.75 m
C. 206.75 m
D. 211.75 m
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C. 206.75 m |
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