Q. A drop manhole is provided if (Solved)
1. a sewer drops from a height
2. a branch sewer discharges into the main sewer at a higher level
3. both (a) and (b)
4. none of these
- b. a branch sewer discharges into the main sewer at a higher level
1. a sewer drops from a height
2. a branch sewer discharges into the main sewer at a higher level
3. both (a) and (b)
4. none of these