Waste Water Engineering
Hydraulic mean radius is

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

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Waste Water Engineering
Stone ware pipes are

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

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