Salient Drainage Design Aspects for Roads & Highways
Dr. S. S. Seehra, Chief Consultant, Roads & Highways SNC–LAVALIN SPAN Consultants (Member of the SNC–LAVALIN Group Inc.) & Former Director–Grade Scientist & Area Advisor, Central Road Research Institute, New Delhi
Introduction
- Adequate drainage is a primary requirement for maintaining the structural soundness and functional efficiency of a road.
- Pavement structure including subgrade must be protected from any ingress of water, otherwise over a period of time, it may weaken the subgrade by saturating it and cause distress in the pavement structure.
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NBM&CW September 2008
