Preference of flexible pavement crust type for traffic 50msa and above, based on low direct construction cost.

Abstract

This paper expedite minimizing the cost of road construction, through analysis done based on the road types cited in IRC 37. There are five flexible road types cited in IRC 37-2012 for different traffic volumes and construction materials at various CBRs ranging from 2% to 15 %. This paper includes the analysis for traffic volume 50msa, 100msa and 150msa. District schedule rates and the specification and standards of the Roads (MORTH Specifications) are used to calculate material, equipment and direct construction cost. Co-relation between the cost, road types, CBRs and Traffic volumes is established, which act as baseline to select the low costing road crust type at a particular site for traffic volume from 50 to 150msa.