The current edition of the AASHTO LRFD Bridge Design and Construction specifications do not have specifications for soil nail retaining walls. This TRB publication is meant to be an interim solution for agencies who still wish to take advantage of the advantages of soil nail retaining walls for certain situations. [Source: TRB. Image: TRB]
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New FHWA Manual on Spread Footings for Highway Structures
Hot on the heals of the revised MSE Wall Manual, the FHWA has released another manual, this one on Spread Footings. Selection of Spread Footings on Soils to Support Highway Bridge Structures was authored by Naresh C. Samtani, PE, PhD, Edward A Nowatzki, PE, PhD and Dennis R. Mertz, PE, PhD. So what is this manual all about? I think the foreword by Scott Anderson, PE, PhD of the FHWA Resource Center says it best:
New Innovation from GeoStabilization International®
GeoStabilization International® brings advanced technology to slope stabilization with its new Remote Operated Launcher System. Slope stability is critical for maintaining safe and sustainable infrastructure. This cutting-edge solution increases crew capabilities and productivity by providing flexible […]
ADSC 2008 Faculty Workshop Wrapup
Robert Thompson of Dan Brown and Associates has posted a wrapup of the 2008 ADSC Faculty Workshop. They had 20 Civil Engineering faculty attend the event. The field demonstration day was hosted by DBA at the Trial’s Training Center in Sequatchie, Tennessee. Apparently that site is Dan’s hobby. Read more about the workshop itself and also read Robert’s post about the field demonstration day including photos. In the photo at right (Robert Thompson, DBA) you can see the Statnamic test setup for a drilled shaft. A little more about the event:
Long Foundation and Hayward Baker have installed examples of several foundation and retaining structures, including drilled shafts, micropiles, and soil nails. During the field day demonstrations, the attendees will observe additional installations, load tests, and non-destructive testing.