The NCHRP has released a new Subsurface Investigation Manual to update the 1988 AASHTO Manual of the same name. Imagine trying to capture every change in technology, methods, and approaches to geotechnical investigations from the past 30 years. After a very cursory review, it appears that the authors of the new manual have done just that! This is sure to be a must-have resource for every geotechnical engineer, whether they practice on the transportation side of the business or not. I’ll be looking forward to having a deeper dive into the changes to the manual. If you notice anything important, don’t be afraid to leave a comment here! You can download the NCHRP Manual on Subsurface Investigations from the Transportation Research Board (TRB).
TRB’s National Cooperative Highway Research Program (NCHRP) Report 669: Models for Predicting Reflection Cracking of Hot-Mix Asphalt Overlays explores mechanistic-based models for predicting the extent and severity of reflection cracking in hot-mix asphalt overlays. [Source: […]
The American Association of State Highway and Transportation Officials (AASHTO) just released the 2008 interims for the AASHTO LRFD Bridge Design Specifications, Customary U.S. Units, 4th Edition. These specifications govern the design of foundations for federal and state highway projects. As soon as we find out if there are any significant changes with respect to bridge foundations or retaining walls, we’ll let you know.
A new publication was released from the TRB’s NCHRP program on Geofoam Applications in Slope Stability Projects. TRB’s National Cooperative Highway Research Program (NCHRP) Research Results Digest 380: Guidelines for Geofoam Applications in Slope Stability […]