railway RRB JE (CBT I + CBT II) Mock Test 2024 Environmental Engineering Water Supply Distribution of Water
The water pressure of 2 kg/cm2 is maintained in water supply distribution mains for _______.
1
residential districts up to 10 storeys
2
residential districts up to 5 storeys
3
residential districts up to 3 storeys
4
residential districts up to 7 storeys