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 […]
Maybe I missed this when it first happened, but I recently saw that AASHTO’s Standard Specifications for Transportation Materials and Methods of Sampling and Testing is no longer being offered as a printed book but […]
AASHTO’s Standard Specifications for Transportation Materials and Methods of Sampling and Testing, 33rd Edition and AASHTO Provisional Standards, 2013 Edition are now available for pre-order, delivery will start later this month. The 33rd Edition of […]
The Louisiana Transportation Research Center has released a report that presents the reliability-based analyses for the calibration of the resistance factor for load and resistance factor design of axially loaded drilled shafts. Here is the […]
Every year, the American Association of Highway and Transportation Officials (AASHTO) has a photo contest called Faces of Transportation. This year’s top winners had a strong geo-engineering theme. A photo of the Caldecott Fourth Bore […]
November 6, 2012, WASHINGTON – Today’s signing of an Agreement on Standards between the American Association of State Highway and Transportation Officials (AASHTO) and ASTM International solidifies coordination between two organizations working in the common interest of highway construction, safety, maintenance, and sustainability in the United States and around the world.
AASHTO Executive Director John Horsley and ASTM President James A. Thomas today signed an agreement which serves as the basis for continued mutual cooperation on the development and publication of highway construction standards.
[Editor] Click through for the rest of this press release from AASHTO and ASTM. [/Editor]
A report titled ‘Falling Weight Deflectometer Calibration Center and Operational Improvements: Redevelopment of The Calibration Protocol and Equipment’ has been published by the FHWA. This report is the result of a pooled fund study that […]
‘TRB’s National Cooperative Highway Research Program (NCHRP) Report 651: LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures explores recommended changes to Section 10 of the American Association of State Highway and Transportation […]
Tony Allen of Washington State DOT may be one of the most influential people in the country in the field of geosynthetics standards, testing and specifications. His involvement in the field of geosynthetics over the […]
Another busy month for ASTM with 66 new, revised or otherwise updated standards related to geotechnical and geological engineering (although not as busy as last month). A couple that caught my eye include brand new standards for geospatial data requirements related to abandoned mines, a new standard for sampling of EPS or geofoam, updated standards for mortar and cement, flexural strength of concrete, LA Abrasion test for aggregates, acceptance testing of geosynthetic clay liners, electrical methods for leak detection of geomembranes with earth cover and classification of soils and soil-aggregate mixtures for highway construction purpose (AASHTO classification).
Those involved in the materials testing side of the business should take a close look at the full list as there are also a number of updated standards relating to various asphalt and and aggregate tests, capping of concrete cyllinders and other related testing standards.
For my practice, perhaps the most significant standard that was updated was D 2488 – Standard Practice for Description and Identification of Soils (Visual-Manual Procedure) which we rely on for our field USCS classifications. I’ll be curious to see what those changes entail. Click through for the full list.