News – Page 64 – GeoPrac.net

Site Characterization Services: Step 3 Field Exploration

October 6, 2015 rockman Comments Off

Another in the series of excellent videos by Terracon. This video addresses the field exploration techniques they use. [Source: Terracon YouTube Channel. Image: YouTube]

Terzaghi’s Birthday 2015 and Growing Pains of a New Profession

October 2, 2015 rockman Comments Off

Today is the anniversary of Karl Terzaghi’s birthday. I have a tradition of marking the anniversary by sharing a quote or some other piece of info I’ve learned about the man we commonly refer to […]

Dewind Remediates Seepage at Dam in Tyler, Texas

September 24, 2015 rockman Comments Off

Dewind One Pass was involved in constructing a cut-off wall to address seepage issues at Tyler Dam in Tyler, Texas. The earthen dam was constructed of clay, but the foundation soil consisted of a very […]

Moretrench's Cannonsville Dam Project to remediate seepage encountered at the toe of the structure

Moretrench Remediates Dangerous Seepage Problem at Dam in Catskill Mountains

September 24, 2015 rockman Comments Off

Moretrench was contacted by NYCDEP after turbid water was noticed seeping from the toe of their Cannonsville Reservoir Dam, in the Catskill Mountains. The problem was determined to be related to an exploratory borehole conducted […]

Hydraulic fracturing (fracking) wastewater injection well

Texas Regulator Clears Oil And Gas Company Of Causing Quakes

September 18, 2015 rockman Comments Off

The Texas Railroad Commission issued preliminary findings saying that the hydraulic fracturing wastewater injection well operated by an Exxon Mobil subsidiary was not to blame for earthquakes that shook Reno, Texas in 2013 and 2014. […]

Drought resiliency grant awarded by the USBR

USBR Selects 23 Projects Totaling $5.2 Million to Build Drought Resiliency in Nine States

September 18, 2015 rockman Comments Off

From the USBR Press Release: Bureau of Reclamation Commissioner Estevan LÃ³pez has announced the selection of 23 projects to receive grants totaling $5.2 million for proactive drought planning and other efforts to build long-term drought […]

Site Characterization Services: Step 2 Methods Consulting

September 14, 2015 rockman Comments Off

The second in a series of videos by Terracon on the various steps of site characterization. If you are someone new to geotechnical engineering, these videos are a great overview of what we do! [Source: […]

Ground penetrating radar (GPR) antenna mounted on a small tractor surveying near the Stonehenge monument as part of a larger project that identified a row of 90 previously undiscovered stones less than 3 km from Stonehenge.

GPR Used to Locate Possible ‘Superhenge’ Near Stonehenge

September 14, 2015 rockman Comments Off

Archaeologists using high-resolution ground penetrating radar (GPR) have located a massive collection of stones less than 3 km from the well-known Stonehenge site. This grouping of 90 stones, up to 4.5 meters tall (14.7 feet) […]

One of the final pieces of the Bertha TBM being lowered into place

Final three pieces of tunneling machine safely in the access pit

September 14, 2015 rockman Comments Off

The repaired cutterhead has been in the pit several weeks now, and the final three pieces of shielding for the Bertha TBM have been lowered into the access pit. Seattle Tunnel Partners team members will […]

Bertha TBM cutterhead being lowered back into access shaft

Tunneling machine’s front end bolted in place

August 31, 2015 rockman Comments Off

The troubled Alaska Way Viaduct Replacement Tunnel TBM known as Bertha has reached a milestone in its repair. The front cutterhead has been repaired, and has been lowered back into the access shaft to be […]