Drop manholes at the junctions of sewer lines, are provided if – McqOptions

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1.	Drop manholes at the junctions of sewer lines, are provided if
A.	invert level of a branch sewer is more than 60 cm that of the main sewer
B.	sewer line runs along a main road
C.	ordinary manhole cannot be built
D.	two sewer lines intersect.
Answer» B. sewer line runs along a main road

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