Q
Drop manholes at the junctions of sewer lines, are provided if________________?
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A
A. Invert level of a branch sewer is more than 60 cm that of the main sewer
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B
B. Sewer line runs along a main road
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C
C. Ordinary manhole cannot be built
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D
D. Two sewer lines intersect
Correct Answer:
A. A. Invert level of a branch sewer is more than 60 cm that of the main sewer
