Waste Water Engineering
Hydraulic mean radius is

Cross-sectional area/wetted perimeter
Mean radius of sewer
Mean of radii in a pipe line of varying cross -sections
Difference in heads between two points in circular pipes

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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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