News – Page 129 – GeoPrac.net

Recycled Rubber in Various Engineering Applications

May 11, 2011 rockman Comments Off

Recycled rubber from tires has been used in various civil engineering projects. The California Department of Resources Recycling and Recovery (CalRecycle) promotes these uses which included RAC or rubberized asphaltic concrete as a friction enhancing […]

Robert Thompson awarded the Diplomate, Geotechnical Engineering (D.GE) certification

May 5, 2011 rockman 1

A little late, but congratulations to my colleague and fellow blogger, Robert Thompson on receiving the D.GE certification. Wish I could have been there! [Source: Dan Brown and Associates, PC. Image: DBA]

Aero-Train tunnel portals at the Dulles Airport

Going Underground at Dulles Airport in Washington, D.C.

May 5, 2011 rockman Comments Off

The cover story for Tunnel Boring Magazine’s April 2011 issue is about the Aero-train tunnel at Dulles Airport that has recently celebrated it’s first year of operation. There are 3 miles of tunnels that guide […]

Video: Geotechnical investigation of the March 11, 2011 Tohoku Earthquake, Japan

April 29, 2011 rockman Comments Off

5619603229_55577ce7ca The NSF funded Geotechnical Extreme Events Reconnaissance (GEER) team has provided a preliminary report and some amazing photos and video of the damage to various regions of Japan affected by the moment magnitude 9.0 earthquake that struck on March 11, 2011. Read on to see some amazing photos and video of the liquefaction damage related to the Tohoku Earthquake in Japan. (Photos from Oregon State Flickr)

[…]

DBM Contractors working on the Capital Hill Sound Transit Station in Seattle

Local contracting firm working on Capitol Hill transit station

April 29, 2011 rockman Comments Off

An article about DBM Contractors of Federal Way, Washington. They are a specialty geotechnical contractor and are working on the Capital Hill Station for the Sound Transit light rail system in the Seattle Metro area. […]

Engineers at Marl Technologies with their undersea drill

MARL Designs Geotechnical Drill Rig that Will Drill in 3,000-m Deep Water

April 29, 2011 rockman Comments Off

That’s right, it can operate in 3,000 meters of water, and it can drill and sample up to 150-meters below the ocean floor while being operated remotely from a ship above the drill site. [Source: […]

Cross-section of dam repaired with geotextile

Using geotextiles to repair earth dams

April 26, 2011 rockman Comments Off

This paper presents how geotextiles were used to repair three dams in Texas, Arizona, and Colorado. The geotextile performs different functions in each of these three dams, all of which are dry structures. By Benjamin […]

Video: UC Davis team studies liquefaction in Japan

April 21, 2011 rockman Comments Off

"I’m a member of an organization, the Geotechnical Extreme Events Reconnaissance Organization," said U.C. Davis Professor Ross Boulanger, Ph.D. Boulanger recently led a team of researchers in Japan, looking at how the dramatic earthquake […]

Nicholson's anchored secant pile wall to facilitate removal of contaminated soilin Bellaire Michigan

Nicholson Constructs Secant Pile Wall at Contaminated Site

April 21, 2011 rockman Comments Off

I missed this press release initially and then got busy. So I’ll just point you to it on Nicholson’s website. [Source: Nicholson Construction. Image: Nicholson]

Geosynthetic reinforced soil walls as integral bridge abutments

April 21, 2011 rockman Comments Off

Republished from the ER-2010 conference, this paper by Michael R. Simac and David J. Elton describes the performance of two of the first geosynthetic reinforced soil walls for integral bridge abutment construction in North America […]