Surface drainage

Road surface drainage is necessary for the drainage of storm water runoff from the road surface and the surfaces close to road construction.

Various components are utilized to prevent or hold this outflow and allow smooth discharge to a proper receiving place.

Due to the rainfall onto road surfaces, water is discharged to the lower point and while passing across the road surface, a layer of water with variable thickness is created.

This water becomes problematic for the vehicles. Splash and heavy spray are thrown up by movable vehicles which minimize visibility whereas the water on the pavement minimizes the friction among the tires and the road surface.

Design of the components for this overflow should sufficiently maintain the safety and convenience of road users along with pedestrians and safeguard adjoining properties & road pavement from damage.


Road Crown

A crown should contain adequate slope from the pavement centerline to the edge so that the water is discharged properly from the roadway surface.

If the slope remains very flat, water is accumulated on the surface and passed through joints and cracks into the pavement or under the surface.

It results in cracking of pavement and forming potholes. The water that is not discharged through the roadway, creates a safety risks to motorists.