Waste Water Engineering
You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at

Full depth
Three fourth full
Two third full
Half full

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Waste Water Engineering
The stone ware sewers

Are used for carrying sewage and drainage from houses
Are manufactured from clays and shale
All listed here
After casting are dried and burnt at temperature 150°C, 700°C and 1200°C

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Waste Water Engineering
Which one of the following statements regarding septic tanks is wrong?

The minimum width of septic level is 90 cm
The outlet invert level is kept 5 to 7.5 cm below the inlet invert level
The depth of tank is kept equal to its width
A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided

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