Important Info

Featured Sponsor

Subscribe Now!

Subscribe to the Monthly Newsletter at GeoPrac.net, powered by Constant Contact.
First name:
Last name:
E-mail:
subscribe unsubscribe

About GeoPrac.net

GeoPrac.net is a community of practitioners of geotechnical engineering, geological engineering, engineering geology, geophysics, hydrogeology and related disciplines. We offer members and visitors the foremost collection of geo-related articles, news, and online resources to keep those geo-professionals in practice at the forefront of their respective fields.

Content
Catch Up Post (CUP) for August 4, 2014
GeoNews - Weekend CUP
Written by Randy Post   
Monday, 04 August 2014 22:46

Here are a few articles I didn't get a chance to blog or tweet about. Enjoy!

 
USGS Historical Topographic Map Explorer
GeoNews - Available Resources
Written by Randy Post   
Monday, 04 August 2014 15:41
Example historical USGS topo map of Highlands, TX from 1912

Esri announced earlier this summer that they were making over 175,000 historical maps from the USGS available online. The maps are available to anyone to view online using their web map viewer. Or ArcGIS online subscribers can have access to high-resolution geo-referenced raster images for use in their ArcGIS projects and web mapping projects. Very cool! [Source: View the Historical Topo Map Explorer at ArcGIS.com via Or read more about the tool and find additional information at the Esri Blogs. Image: Esri]

 
Oso landslide: differences of opinion about the landslide mechanisms
GeoNews - Geologic Hazards
Written by Randy Post   
Thursday, 31 July 2014 00:32
Two-fold failure event evident in the seismic data

Professor Petley, the author of the Landslide Blog, has an interesting discussion about a controversy in the geoengineering / geology community regarding the Oso landslide in Washington State. The Geotechnical Engineering Extreme Events Reconaissance (or GEER) report was recently issued for the OSO landslide. But USGS scientists have a different theory about the event. Both the GEER committee and the USGS agree that the Oso landslide was a two-fold failure event. But the difference in interpretation is the relative sizes of the two events and the mechanism they took. I won't try and explain the controversy here as the post at the Landslide Blog does a great job of that. [Source: The Landslide Blog. Image: Landslide Blog]

 
Crazy Rock Slide in China (Video)
GeoNews - Geologic Hazards
Written by Randy Post   
Thursday, 31 July 2014 00:16

According to the Landslide Blog, this rockfall video was taken in Maoxian County in Sichuan Province of China on or around July 17, 2014. It shows a very dangerous rockfall event with people running from their cars. In one scene you can even see someone being struck by a rock and knocked over. The person is later able to walk away with assistance. Towards the end of the video, even the windshield of the videographer is struck by a smaller rock and cracked. Very dramatic and very scary video!

Crazy Rockfall Video from China

[Source: YouTube via Landslide Blog. Image: YouTube]

 

Last Updated on Thursday, 31 July 2014 07:19
 
Liebherr Creates Foundation Drill Rig Simulator
GeoNews - Available Resources
Written by Randy Post   
Friday, 25 July 2014 04:55
Liebherr's foundation drill rig equipment simulator in action

Equipment manufacturer Liebherr has created a new simulator to allow operators to train on foundation drilling equipment virtually. The simulator is based on other simulators created by Liebherr, and includes things like a real construction site with neighboring buildings and structures, uneven ground, varying soil conditions, etc. [Source: Read more at GE Innovation News | New Civil Engineer via @GE_magazine. Image: NCE / GE Innovation News]

 
Hayward Baker Constructs Temporary Emergency Earth Retention for Landslide Repairs Near Train Tracks in Baltimore
GeoNews - Project Related
Written by Randy Post   
Tuesday, 22 July 2014 00:28
View of failed Baltimore retaining wall before soldier pile wall construction

Hayward Baker was among the contractors called in for emergency repairs to a failed retaining wall in Baltimore that destabilized a slope, causing a landslide that enveloped cars and threatened a railroad track below. The final episode of the slope failure was caught on video and showed several cars being swallowed. GeoPrac sponsor, Hayward Baker is currently on-site installing a temporary soldier pile lagging wall with tiebacks to facilitate the construction of a permanent wall. They are anticipating to have the temporary wall complete in August. [Source: Read more about the project at Haywardbaker.com. Image: Hayward Baker]

 
ASFE Changes Its Name to Geoprofessional Business Association
GeoNews - Comings and Goings
Written by Randy Post   
Tuesday, 22 July 2014 00:21

ASFE has been a fixture in the geoprofession since its inception in 1969. They are officially changing their name to the Geoprofessional Business Association to more accurately reflect what their role and mission is. [Source: Read more about the name change on the Geoprofessional Business Association site]

 
Crux Subsurface Wins Two 2014 DFI Awards
GeoNews - Miscellaneous
Written by Randy Post   
Friday, 11 July 2014 00:38
Micropile foundations with Crux' patented steel micropile cap design for the Sunrise Powerlink Project

Congratulations to Crux Subsurface, Inc. on winning the Deep Foundation Institute's (DFI) 2014 Outstanding Project Award (OPA) and the 2014 C. William Bermingham Innovation Award for their Sunrise Powerlink Project in California. The project involved the installation of over 3,700 micropiles for the foundations of new steel lattice towers for a 117 mile transmission line running from Imperial Valley to San Diego. All of the micopiles were installed using rigs and equipment mobilized by helicopter in the difficult terrain. The project was the first to use Crux' patented steel micropile cap, which is what they were awarded the Bermingham Innovation Award for. Crux credits the steel cap design for reducing the on-site construction time by 64%. [Source: Read more about the awards from the Deep Foundations Institute (DFI). Image: Crux Subsurface, Inc.]

 
Time Lapse Video of Foundation Drilling for Dubai Residential High-Rise
GeoNews - Available Resources
Written by Randy Post   
Friday, 11 July 2014 00:33

[Source: YouTube. Image: YouTube]

 
Geotechnical work underway on new section of Historic Highway
GeoNews - Project Related
Written by Randy Post   
Friday, 11 July 2014 00:22

Access Road Construction for Geotechnical Investigation

Geotechnical work has commenced for a project involving reconstructing the Historic Columbia River Highway in Hood River County as a segment of Oregon's Historic Highway State Trail. The geotechnical scope consists of 48 test pits, 58 boreholes, and constructing 4,000 linear feet of temporary access roads. [Source: Hood River News. Image: Hood River News]

Last Updated on Monday, 04 August 2014 22:52
 
World Cup 2014: a landslide affects the city of Natal in Brazil
GeoNews - Geologic Hazards
Written by Randy Post   
Tuesday, 01 July 2014 00:27
Brazil soccer/football fan surveys the landslide damage in Natal

Torrential rain in the World Cup city of Natal caused a landslide right around the time that the USA defeated Ghana. According to the Landslide Blog, the landslide destroyed 50 homes but there were no lives lost. A You-Tube Video showing the landslide as seen from a small UAV shows the devestation, and interestingly shows a storm drain that could have played a role in the failure, perhaps becoming overwhelmed after the 50 hours of rain that fell on Natal. [Source: The Landslide Blog. Image: NBC News]

 
2014 Terzaghi Lecture - Carlos Santamarina
GeoNews - Available Resources
Written by Randy Post   
Tuesday, 01 July 2014 00:14

Dr. Carlos Santamarina of Georgia Tech. presented the 2014 Terzaghi Lecture at Geo-Congress 2014 entititled 'Energy Geotechnology: Enabling New Insights Into Soil Behavior'. From the You-Tube summary:

Energy is critical to life, and the coming decades will see worldwide population growth and associated economic development that will result in a pronounced increase in energy demand. Historically, geotechnical engineering has been crucial to projects that have sustained societal transformations. Once again, geotechnical engineering has a central role to play in the evolving energy challenge, from resource recovery and infrastructure development, to energy storage and waste management. Examples during this lecture and details in the accompanying manuscript show that the emerging field of energy geotechnology drives us to reconsider the basic tenets of geotechnical engineering (such as soil formation, index properties, and classification), to extend our understanding of geomaterials (at high pressure and temperature, long time scales, and large number of repetitions), to recognize new phenomena (most often couplings between hydraulic, thermal, chemical, biological and mechanical processes, and various forms of localization), and to advance technological innovations for characterization (in situ, sampling, and laboratory) and monitoring.

[Source: Watch the 2014 Terzaghi Lecture on YouTube!. Image: YouTube]

 

Last Updated on Tuesday, 01 July 2014 07:17
 
<< Start < Prev 1 2 3 4 5 Next > End >>

Page 2 of 5