Storm Water Drainage:

In city streets, the disposal of rain water has to be done through a system of underground storm water drains. The water is collected at the roadside kerb and is led into a covered storm water drain. Figure shows a typical arrangement.

Notes: (a) Collection of Water at A Bell Mouth Pipe 250 mm φ.

(b)   Covered Storm water drain at location B may be hume pipe/cast in situ/precast channel.

Figure: Typical Cross-section of Urban Road Showing Storm Water Drains