Computer · Sewerage and Sewage Treatment
A manhole is classified as a shallow manhole if its depth is in the range of:
- 10.9 to 1.2 m
- 20.7 to 0.9 m✓
- 30.5 to 0.7 m
- 40.4 to 0.5 m
Correct answer
0.7 to 0.9 m
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