Practices for Local Calibration of LRFD Geotechnical Resistance Factors
More than 15 years have passed since the U.S. transportation industry started its transition from allowable
stress design (ASD) to load and resistance factor design (LRFD). For geotechnical design, the
AASHTO LRFD Bridge
Design Specifications includes provisions that allow state departments of transportation (DOTs)
to develop their own design methods and resistance factors.
The TRB National Cooperative Highway Research Program's
NCHRP Synthesis 601: Practices for Local Calibration of LRFD Geotechnical Resistance Factors
documents the extent to which state DOTs have developed agency-specific geotechnical design
methods and resistance factors and also details the challenges of the development and benefits
resulting from implementation of the methods.
This Summary Last Modified On: 11/3/2023