Implementing a National Catalog of Subgrade Soil-Water Characteristic Curve (SWCC) Default Inputs for Use with the MEPDG
Project Data
Funds:
$59,500
Research Agency:
Arizona State University
Principal Investigator:
Claudia Zapata
Effective Date:
7/24/2008
Completion Date:
5/31/2010
The objective of NCHRP Project 9-23A was to create a national database of pedologic soil families that contains the soil properties for subgrade materials needed as input to the MEPDG. The database focuses upon the parameters describing the soil-water characteristic curves (SWCC), which are key parameters in the implementation of MEPDG Level 1 environmental analysis, but also includes measured soil index properties needed by the EICM in all three hierarchical levels of pavement design.
A summary of the project final report is available as Research Results Digest 347, "A National Database of Subgrade Soil-Water Characteristic Curves and Selected Soil Properties for Use With the MEPDG." The entire project final report including appendixes is available as NCHRP Web-Only Document 153.
