Waste Water Engineering
At the junction of sewers

None of these
Top of smaller sewer is kept lower
Tops of both the sewers are at the same level
Top of larger sewer is kept lower

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Waste Water Engineering
The sewers

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

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