A manhole is classified as shallow if its depth is between A 0.4 to 0.5 m B 0.5 to 0.7 m C 0.7 to 0.9 m D 0.9 to 1.20 m A manhole is classified as shallow if its depth is between Correct Answer 0.7 to 0.9 m Bissoy MCQ Team Civil Engineering Waste Water Engineering