A very nice collection of photos of geotechnical failures, geotechnical construction projects and methods. Put together by Ross W. Boulanger at UC Davis and James Michael Duncan from Virginia Tech, Blacksburg.
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Foundation Technologies, Inc
Among other things, they are the makers of various drilled shaft spacing products. They also sell helical anchors, soil screws, tieback anchors, underpinning solutions and more. Visit Foundation Technologies, Inc
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GIS.com
Sponsored by ESRI, it presents the basic principles of GIS and how it affects our everyday lives. You’ll find tools and resources for getting started with GIS. Visit GIS.com
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DBM Contractors, Inc.
Highly respected specialty geotechnical contractor with tons of expertise in earth retaining structures, slope stabilization and ground improvement. Visit DBM Contractors, Inc.