Study of Soil Water Surface and Sub Surface Highway Drainage System

Abstract

One of the major reasons of deterioration of roads is rain water. During Rainfall, Part of water flows on ground surface and part of it percolates through soil mass until it reaches the ground water below water table. Due to percolation of water in highway pavement moisture content of soil increases which reduce the bearing capacity of the soil. Thus stability of highway is reduced. Drainage of the highway is the process of removing and controlling surplus water on the surface and sub soil water in sub surface with in the right way which is detailed explain in this paper.