Designers and builders of all types of retaining wall structures (i.e., segmental block, reinforced slopes, soil/rock anchors, panel facing, and cast in place).
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Standards and Codes
AASHTO LRFD Bridge Design Specifications – 2008 Interims Released
The American Association of State Highway and Transportation Officials (AASHTO) just released the 2008 interims for the AASHTO LRFD Bridge Design Specifications, Customary U.S. Units, 4th Edition. These specifications govern the design of foundations for federal and state highway projects. As soon as we find out if there are any significant changes with respect to bridge foundations or retaining walls, we’ll let you know.
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Links
Arizona Geology
Blog of Lee Allison, Arizona State Geologist. Visit Arizona Geology
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Available Resources
New FHWA Mechanically Stabilized Earth Retaining Wall (MSE Wall) Manual
The much anticipated LRFD update to the MSE Wall and Reinforced Soil Slope Manual is now available for download from the FHWA’s website. The full title of the document is Design of Mechanically Stabilized Earth Walls and Reinforced Soil Slopes and it was authored by Ryan R. Berg, P.E.; Barry R. Christopher, Ph.D., P.E. and Naresh C. Samtani, Ph.D., P.E. Find the abstract and download link below. As time permits, I’ll try to post more about some of the changes in this important geotechnical publication.