Sound Transit's U-Link project extends the regional light-rail system from downtown Seattle to the University District, via a 3.5 mile tunnel. The … [Read more...]
GEO monitors retaining walls, landslides, embankments, slopes, and tunnel linings to help engineers assess risk, prevent potential damage, and evaluate the effectiveness of remediation measures. Typical instrumentation includes automated total stations (AMTS), inclinometers, extensometers, piezometers, tiltmeters, and crackmeters.
When a retaining wall failed, 41,000 cubic yards of rock, soil and trees slumped onto a major urban highway. The failure closed the highway and … [Read more...]