Waste Water Engineering
The sewers

Must be laid at least 2 to 3 m deep to collect /water from the basements
Must be of adequate size to avoid over flow
Must flow under gravity ½ to ¾ full
All listed here

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Waste Water Engineering
The sewer pipes

Should resist the wear and tear caused due to abrasion
Are designed for generating self-cleansing velocities at different discharge
All listed here
Carry sewage as gravity conduits

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