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Drop manholes at the junctions of sewer lines, are provided if________________?
Civil Engineeringmedium
Invert level of a branch sewer is more than 60 cm that of the main sewer
BSewer line runs along a main road
COrdinary manhole cannot be built
DTwo sewer lines intersect
Correct Answer: A. Invert level of a branch sewer is more than 60 cm that of the main sewer
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