The reduced levels of the string at the consecutive sight rails A and B are 203.

Question

The reduced levels of the string at the consecutive sight rails A and B are 203.575 m, 203.475 m respectively. If the difference of their R.D.s is 10 m, the gradient of the sewer line is

Options:

A . 1 in 503 upward

B . 1 in 100 upward

C . 1 in 500 upward

D . 1 in 100 downward

Answer: Option D

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