Sunday, November 1, 2009
This 13th Edition of the AASHTO Provisional Standards contains a complete set of 41 provisional materials specifications and test methods. All Provisional Standards are approved for publication by the AASHTO Highway Subcommittee on Materials. Provisional Standards have been adopted by the Highway Subcommittee on Materials on a temporary basis for a maximum of eight years. A chronology of the year-to-year status of the Provisional Standards during the past eight years is included.