Available Resources
Seismic Design of Geosynthetic-Reinforced Soil Bridge Abutments with Modular Block Facing
Text from TRB: TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 187: Seismic Design of Geosynthetic-Reinforced Soil Bridge Abutments with Modular Block Facing explores design methods and construction guidelines for using geosynthetic-reinforced soil (GRS) […]
Project Related
Washington’s I-5 Bridge over Columbia River Needs Seismic Upgrade
The timber piles of the existing I-5 bridge over the Columbia River is vulnerable to liquefaction in the event of a major earthquake. And there is no shortage of potential sources for the shaking in […]
Geophysics
Kansas Geological Survey uses Geophysics to Find Border Tunnels
The Kansas Geological Survey has some interesting seismic equipment that they have used on behalf of the U.S. Department of Homeland Security to look for drug tunnels along the US-Mexico border. I’ve never seen anything quite like this. The sensors all appear to be placed within an old fire hose and mounted onto a Bobcat Toolcat utility machine. On the front of the vehicle is a cyllinder with a 60-lb weight that gets dropped. Read on. (Photo by Richard Gwin, LJWorld.com)