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ACPA AirPave is a Windows-based computer program developed by Construction Technology Laboratories, Inc. (CTL) under the sponsorship of the American Concrete Pavement Association (ACPA) for evaluation of airport concrete pavements subjected to aircraft traffic. The program can determine the critical pavement bending stress due to any configuration of wheel loads of aircraft or industrial vehicles. The user can input various configurations of wheel spacing by using coordinates and loads by adjusting the tire pressure and contact area. This allows the user to analyze any type of aircraft, industrial lift trucks, log handling equipment, straddle carriers, dump trucks, and other construction loadings, provided adjustments are made to the underlying assumptions for aircraft pavement analysis. However, the program may not be applicable for analyzing distributed loads covering vary large contact areas.

This computer program is based on the “AIRPORT” computer program originally developed by Mr. Robert G. Packard of the Portland Cement Association (PCA) for mainframe computers and later converted to microcomputers by Roger Millikan. The program is designed to be intuitive and user friendly with clearly captioned option buttons, command buttons, text boxes, and other operation tools.

The latest version of AirPave contains a comprehensive aircraft library consisting of most commercially manufactured aircraft. Although AirPave is generally an analysis tool, it can be used for airfield pavement thickness design or other industrial pavement thickness design if appropriate adjustments are made. However, the user is advised that if federal funds are used for airfield pavement, then the Federal Aviation Administration requires the use of their computer software FAARFIELD be used for design. Likewise, if the Department of Defense funds are used, then the Corps of Engineers computer software, PCASE is required for thickness design. Still, AirPave is a valid tool for engineers to use to validate the design or evaluate the conservatism of the design. It is also useful for checking the impact of a one-time loading on a pavement or an overload condition. The software user’s manual has more detail on the exact algorithms, input requirements, and computations done by the software. It also provides instructions on how to use the tool for industrial pavement designs.

Other pavement design software are available from ACPA for roads, streets, highways, and pervious concrete pavement.