Waste Water Engineering
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

1 in 503 upward
1 in 500 upward
1 in 100 upward
1 in 100 downward

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Waste Water Engineering
Stone ware pipes are

Especially suited to pressure pipes
Highly resistant to sulphide corrosion
Highly impervious
Hydraulically efficient because of their smooth interior surface

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