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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
The Case for BIM in Geotechnical Data
Articles - Software and Spreadsheets
Written by Gary Morin   
Tuesday, 18 November 2014 06:32

Incorporating geotechnical data in BIM allows considered design optioneering and refinement at the outset of a project; minimises geotechnical risk in construction and enables cost-effective repairs and maintenance of assets throughout the project’s lifetime. Image courtesy of Mott MacDonald.

Getting the Message Across

Applying Building Information Modelling principles to geotechnical data will reinforce the message that geotechnics is an integral part of every phase of a project – not just site investigation, argues Gary Morin, Technical Director, Keynetix.

[Editor] In this contributed article, Gary describes the justification for using BIM for geotechnical data.  Among those benefits are the ability to perform detailed alternatives analysis and optioneering, reduction of risk during construction, and the ability to perform cost-effective repairs and maintenance during the lifetime of the geotechnical asset. Click through to read the full article. Keynetix is a sponsor of GeoPrac.net. [/Editor]

Last Updated on Tuesday, 18 November 2014 07:15
 
GeoPrac Newsletter 051
GeoNews - Miscellaneous
Written by Randy Post   
Friday, 07 November 2014 05:07

The 51st edition of the GeoPrac.net newsletter was published this week. Content includes:

  • Let's do better as mentors
  • Hayward Baker Atlanta Stadium
  • Chuck Ladd In Memoriam
  • Port of Oakland Soil Stabilization
  • Most Popular GeoPrac Content
  • Underwater Landslide in 2011 Tsunami
  • Lidar Applications in Landslides

Check it out if you missed it, and be sure to subscribe to future newsletters!

Last Updated on Friday, 07 November 2014 05:25
 
Hollow stem auger strikes NY Subway Train
GeoNews - Miscellaneous
Written by Randy Post   
Thursday, 06 November 2014 22:39

Hollow stem auger strikes NY MTA F Train on October 30, 2014

A 10 inch hollow stem auger grazed a packed subway car on the NY MTA's F line last week scratching the side of the train and breaking windows. Fortunately there were no injuries. I think the pictures say it all! The auger belonged to a contractor installing dewatering wells. But as one MTA source quoted in the Post put it: 'Somebody made a mistake; maybe a surveyor or a field engineer... They drilled into the street but didn’t realize they were right over the F train tunnel. They weren’t supposed to be in that spot.' Ironically, the dewatering well was associated with the East Side Access project...an MTA project. [Source: NY Post via Mashable. Image: NY Daily News]

Last Updated on Friday, 07 November 2014 05:49
 
GEI Consultants Hires Dr. Jesus E. Gomez
GeoNews - Comings and Goings
Written by Randy Post   
Sunday, 26 October 2014 23:31
Dr. Jesus E. Gomez joins GEI Consultants

Dr. Jesus E. Gomez has joined GEI Consultants as a vice president and will lead their geotechnical and geostructural practice in the Philadelphia region. Dr. Gomez has over 30 years of experience, and was previously a principal with Schnabel Engineering. He is well known in the geotechnical community for his work on various FHWA/ADSC publications on soil nails and micropiles, among others. [Source: Read the full press release from GEI Consultants. Image: GEI Consultants]

 
Shotcrete Made From Tailings Could Insulate Underground Mines
GeoNews - Available Resources
Written by Randy Post   
Sunday, 26 October 2014 23:30
Underground mine ventilation plan

Underground metal mines can have extremely high temperatures, making it hazardous for employees to work there for more than a few minutes at a time. Researchers from my alma mater, the University of Arizona, are studying the possibility of using a common mining waste product, tailings, as aggregate in shotcrete with good insulation properties that will be used to coat rock surfaces that readily conduct heat. [Source: Arizona Engineer. Image: Arizona Engineer]

 
DIGGSML.org website revamped
GeoNews - Available Resources
Written by Randy Post   
Sunday, 26 October 2014 23:16
DIGGSML Standard Data Framework Model

DIGGSML is an XML-based schema designed for transfer of geotechnical and geoenvironmental data between different organizations. In 2013, the ASCE Geo-Institute was awarded a 2-year contract by the Ohio DOT to implement DIGGS. The current version, 2.0a, is undergoing pilot testing through early 2016. [Source: Find out more about this data framework at DIGGSML.org via LinkedIn Geotechnical Data Hub. Image: DIGGSML]

 
Alaskan megathrust fault more active under Kodiak
GeoNews - Geologic Hazards
Written by Randy Post   
Wednesday, 22 October 2014 23:27
Damage on Fourth Avenue in Anchorage Alaska after the Good Friday Earthquake of 1964

The 1964 Alaska Earthquake was 9.2 in magnitude and caused dramatic destruction and dramatic examples of surface rupture, subsidence, and liquefaction. New paleoseismic evidence points to a previously unknown earthquake that happened on the same fault segment approximately 500 years ago. This new evidence would change the recurrence interval for the earthquakes on the Alaskan megathrust fault, which would affect seismic hazard in Alaska, but could also increase the tsunami hazard in places as far away as California and Hawaii. [Source: EARTH Magazine via AEG Insider. Image: Wikipedia]

 
Panama Canal Cover Story in Pile Buck Magazine
GeoNews - Project Related
Written by Randy Post   
Monday, 13 October 2014 23:26
Panama Canal Cover Story in 2014 Volume 30 Issue 5

The latest issue of Pile Buck Magazine has a cover story on the Panama Canal Construction. Talk about a mega project! There are actually two articles, the first includes a very nice summary of the overall project. Both discuss the construction of a huge cofferdam to separate Miraflores Lake from the construction area for the new Pacific Access Channel. This channel will link the third set of locks to Culebra Cut. The cofferdam consisted of 58 circular cells comprised of 17,000 tons of straight and z-section sheet piling. [Source: Read the article for free in Pile Buck Magazine. Image: Pile Buck]

 
Catch-up Post for October 8, 2014
GeoNews - Weekend CUP
Written by Randy Post   
Wednesday, 08 October 2014 06:09
 
LiDAR Applications in Landslides
GeoNews - Available Resources
Written by Randy Post   
Tuesday, 07 October 2014 23:12
LiDAR Topography of Oso Landslide showing amount of elevation change

The cover story in the latest issue of LIDAR Magazine is titled Unearthing Landslides. It describes the work done by a company called Quantum Spatial in the immediate aftermath of the Oso Landslide. They were also involved in scanning the recent landslide in Grand Mesa, Colorado. Quantum Spatial has developed a landslide tool that identifies areas of landslide risk based on different aspects of the LiDAR based topography. [Source: Read the article from LiDAR News. Image: LIDAR Magazine]

 
Happy Karl Terzaghi's Birthday 2014!
GeoNews - Comings and Goings
Written by Randy Post   
Thursday, 02 October 2014 05:53

It's October 2 again, and today would have been Karl Terzaghi's 131st birthday. As I was reflecting on Terzaghi and some of his quotes, I was reading a passage from Professor's Goodman's biography1 that described a talk that he gave in 1924 entitled "The Way to Happiness." I thought this would be a nice change of pace from some of his more famous quotes and topics. Here are some selections from Goodman's description of the presentation.

...This stems from application of the law of selection, which "leads to the survival of the most clever, most reckless, and most hypocritical. There seems to be no fox hole left for the freedom of will... The validity of the fundamental laws provides that the fear of perishing and the desire to succeed dominate all other instincts."

"The very moment you overcome fear and desire you leave the domain governed by the law and you become free." In this spirit Terzaghi left his hearers with three rules to promote internal happiness, all of which contradict the laws pointing toward external success: 1) do not avoid suffering but welcome it as a way to augment your strength, 2) disregard market conditions and give your best effor no matter what and never produce something that is worthless even if the market says to do so, and 3) try to combine "the inflexible firmness of the man of action with the sensitivity and spontaneity of the artistic mind."

Happy KTB 2014! -Randy

1. Goodman, Richard E. (1999). Karl Terzaghi - The Engineer as Artist. ASCE Press, Reston, Virginia.

 
New Version of RockWorks16 Available
GeoNews - Software Updates
Written by Randy Post   
Tuesday, 30 September 2014 00:04
RockWorks 16 faulted cross-section

Geological software developer RockWare announced last month that their free update for RockWorks 16 contains over 75 changes since the previous update. And if anyone is counting, that's 672 changes since the initial release of RockWorks 16. They seem very receptive to user feedback, and very proactive with their new releases. I wish more geo-software companies were like that! [Source: The RockWare Blog. Image: RockWare Blog]

 
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