A National Database of Subgrade Soil-Water Characteristic Curves and Selected Soil Properties for Use with the MEPDG

TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 153: A National Database of Subgrade Soil-Water Characteristic Curves and Selected Soil Properties for Use with the MEPDG is the contractor’s final report and Appendices A through D related to NCHRP Research Results Digest 347 with the same title. 

NCHRP RRD 347 explores the creation of a national database of pedologic soil families that contains the soil properties for subgrade materials needed as input to the Mechanistic-Empirical Pavement Design Guide (MEPDG).

Warning! This is a very large file that will take several minutes to download. Warning! 

The file is in a ZIP format. When prompted, select "Save," choose the location where you would like to save the file, and select "OK".  Don't forget where you save it! You can unzip the file after it is completely downloaded.