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).
Site Characterization Services: Step 3 Field Exploration
Scary: Things that go bump…at the end of the bridge
[Update 2008-11-03] The Link to the Journal’s homepage requires you to purchase the article. Too bad. Try the CDOT report instead I guess. [/Update]
First off, sorry for the cheesy Halloween tie-in. The other day I read an interesting paper in the Journal of the Transportation Research Record, No. 2045, of the Transportation Research Board (TRB). The paper was titled: “Evaluation and Recommendations for Flowfill, and Mechanically Stabilized Earth Bridge Approaches.” I’ll post the full citation below. (Photo from FHWA NHI Soils and Foundation Course Slides, NHI Course No. 132012)
The authors describe the standard of practice for Colorado DOT (CDOT) projects for the last 16 years with regard to the construction of bridge approaches in an attempt to eliminate the problem with the “bump at the end of the bridge”. They discuss some of the common reasons for problems with approaches, and some possible solutions. Click through for more.
6 Free Sites for Geotechnical Webinars and Technical References
Are you itching for some geo-education? The following is a list of 6 free and awesome sites that provide free webinars, papers, and technical reference manuals for you to get some more in-depth knowledge about our awesome geotech profession:
[Editor] Click through for this contributed article from Rey Villa. [/Editor]