Civil Engineering pavement design calculation software - covers calculations for traffic, road geometry, surveying, earthwork, asphalt pavement, concrete pavement, concrete floors on grade and unit conversions. Supports 32 bit,( x86) and 64 bit (x64) architecture for Windows Operating Systems. Program has built in reference manuals, and coefficient tables for a stand-alone design application. Can open multiple windows to perform multiple calculations at one time and solve complex civil engineering design problems.