A sewer is laid from a manhole to a manhole , 250 m apart along a downward gradient of 1 in 250. If the reduced level of the invert at is 205.75 m and the height of the boring rod is 3 m, then, reduced level of the sight rail at , is

A sewer is laid from a manhole to a manhole , 250 m apart along a dow

1.	A sewer is laid from a manhole to a manhole , 250 m apart along a downward gradient of 1 in 250. If the reduced level of the invert at is 205.75 m and the height of the boring rod is 3 m, then, reduced level of the sight rail at , is
A.	202.75 m
B.	206.75 m
C.	208.75 m
D.	211.75 m
Answer» C. 208.75 m

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A sewer is laid from a manhole to a manhole , 250 m apart along a downward gradient of 1 in 250. If the reduced level of the invert at is 205.75 m and the height of the boring rod is 3 m, then, reduced level of the sight rail at , is

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