DEPARTMENT OF THE PWD IS RESPONSIBLE TO PREPARE THE DESIGN CALCULATIONS OF THE ROAD PAVEMENTS

CLASSIFICATION OF ROADS AND THE DESIGN OF PAVEMENTS :-- The design of the pavement is governed by the traffic density ie the number of vehicles using the road during the peak hours and the maximum wheel load .The daily traffic volume is about 8to 10 times the maximum hourly volume . Character of the traffic and the speed of the vehicles are also major considerations .Rate of traffic increase per annum is also to be considered and which may vary from 10 to 20 percent in a developing country like India.Density of traffic is defined as the volume of traffic per unit width of carriageway and the intensity of traffic is expressed as so many tonnes of traffic per unit width of carriageway per day.It is necessary to protect the design parameters for design of the pavement governed by the traffic density for which the Department of the Public Works may classify the status and standard of the existing standard of roads with in the monitoring and evaluation of intensity of traffic and the density of traffic per unit width of the carriage way