3011Civil EngineeringMedium
Pick up the correct statement from the following?
AAll the above
BManhole covers are made circular for the convenience of the cleaning staff
CThe boning rod is used for checking the levels of the sewer inverts
DA manhole is classified as shallow manhole if its depth is less than 0.9 m
Correct answer
A. All the above
Explanation
The correct answer is All the above.