29-10-2014, 02:31 PM
Abstracts: Drainage is one of the most important factors to be kept in mind in road design and maintenance projects. It is accepted generally that road structures work well and last longer in dry conditions. Researchers have shown that poor drainage is often the main cause of road damages and problems with long term road serviceability. These projects have reported that poor drainage is the one of the biggest problems for state roads, and parts of the main road network. Drainage improvement and maintaining the drainage in a good condition has therefore a major effect in reducing the rate of deterioration of roads.