About Asphalt pavement thickness design software SW-1:
Welcome to SW-1, Thickness Design Software for Asphalt Pavements from the Asphalt Institute! SW-1 is a powerful tool for use in design and analysis of asphalt pavement structures for a wide variety of applications.
SW-1 provides a computerized methodology for thickness design of asphalt pavements for a wide variety of pavement uses. With this single program, a user can design pavements for the following vehicle types and uses:
• Commercial Airports
• General Aviation Airports
• Highways
• Roads
• Streets
• Parking Lots
• Port and Marine Facilities
• Industrial and Heavy Wheel Load Applications
SW-1 also provides the advanced user the capability to conduct straightforward, yet powerful structural analysis of special pavement structures using DAMA.
SW-1 is based on the respected design procedures of the Asphalt Institute as detailed in several Asphalt Institute manual series (MS), information series (IS), and research report (RR) documents. These methods are based on mechanistic-empirical principles and have been developed and refined over a period of 30 years by the Asphalt Institute.
While SW-1 is a stand-alone computer program, the user is encouraged to become familiar with the individual design procedures that are used in the program. The Asphalt Institute methods differ in some ways to other common pavement design methods and it is best that the user is fully aware of the background, assumptions, and conditions that apply to each thickness design procedure. Table 1 lists the pertinent Asphalt Institute documents that form the basis of the methods included in the SW-1 thickness design software.

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