Estimating and Costing
Pick up the correct statement from the following:
- A. In a gully trap, a water seal of 6 to 7.5 cm is provided
- B. The gully trap collects waste water from the kitchen, sink, wash basins, etc.
- C. The gully trap disconnects the sullage drain from the main drainage system
- D. The grating provided over gully traps is 23 cm square