In Sanitation Man hole is apparatus for

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Detailed Solution:

Location of Manholes:-

1- change of gradient

2- Every bend

3- Every junction

4- change of sewer diameter

As per IS 1742:1960 The recommended spacing of manholes on straight reaches lines diameter upto 0.3m spacing 45m, diameter upto 0.60m spacing75m, diameter 0.9m spacing 90m, diameter 1.2m spacing 120m,

diameter 1.5m spacing 150m, greater than 1.5m dia spacing of 300m should be adopted