Lunar geotechnical engineering, popular GeoPrac content for June, Dead Sea sinkholes and a toppled building in Shanghai are all featured in the 5th issue of the GeoPrac.net monthly newsletter for July of 2009. You can read it in the newsletter archives, and be sure to subscribe to future issues.
It’s that time again. Here are a collection of changes/additions to ASTM standards that are relevant to geotechnical engineers, soils labs, CQA firms and related disciplines. There are a couple of interesting new standards available. D7698 is a new procedure for estimation of in-place density and water content of soil and aggregate by correlation with complex impedance. I’m not eactly sure what that is, but it sounds cool. There is also a new standard (D7702) that provides guidance for the evaluation of direct shear results involving geosynthetics. Read on for these and other updates.