NCHRP Manual on Subsurface Investigations
Available Resources

New Manual on Subsurface Investigations

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 […]

Standard Specifications for Transportation Materials and Methods of Sampling and Testing, 33rd Edition
Available Resources

AASHTO 2013 Standard Specs for Sampling and Testing

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 […]

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Press Releases

AASHTO and ASTM International Agreement Benefits U.S. and Global Road Construction and Transportation

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]


American Society of Testing Materials Logo - ASTM
Standards and Codes

ASTM Updates August 2009

American Society of Testing Materials Logo - ASTMAnother 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.