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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
Video: Low-Tech Pile Driving Option
GeoNews - Miscellaneous
Written by Randy Post   
Thursday, 05 June 2014 15:10

I know this video made the rounds by email and on Geoengineer a while back, but I haven't posted it here. It shows a novel way of installing piles in softer soil. Those guys have some nice rhythm! Happy Friday.

[Source: YouTube. Image: YouTube]

Last Updated on Thursday, 05 June 2014 22:24
 
NovoLAB Introduction Video
GeoNews - Software Updates
Written by Randy Post   
Thursday, 05 June 2014 15:02

NovoLAB is a geotechnical data management software designed for processing soil laboratory test data and preparation of boring logs. NovoLAB generates the boring logs and tests summary automatically. By GeoPrac sponsor Novotech Software.

[Source: YouTube. Image: YouTube]

Last Updated on Thursday, 05 June 2014 22:25
 
Keynetix to Support the Geotechnical Academy
GeoNews - Press Releases
Written by Randy Post   
Thursday, 05 June 2014 07:24

Keynetix_Geotechnical_Academy_1Keynetix are delighted to have been offered the opportunity to be a regular contributor to the Geotechnical Academy starting in June 2014.

The Geotechnical Academy is a collaboration between Equipe Group and Geotechnical Engineering Ltd, providing fundamental technical and commercial training to aspiring geo-professionals, helping them to apply their theoretical and technical understanding in the practical and commercial world.

The training experience is different from other more traditional offerings, in that it will take a group of delegates and their sponsors on a journey over a whole year, to greater knowledge and appreciation of their subject.

Roger Chandler of Keynetix will be taking part in the training sessions that will form part of this fantastic academy. Here he will be raising awareness in the industry of the importance of Geotechnical Data Management, AGS, BIM and the new BS 8574.

“The Geotechnical Academy is a great opportunity for both new and experienced engineers and it is great to be able to contribute to one of the modules.” says Roger “Good geotechnical data management is vital in today’s workplace and I find teaching this to engineers very enjoyable and rewarding. I’m looking forward to helping engineers experience some exciting light bulb moments over the coming months and then giving them practical advice on how to make better use of their time and geotechnical data.”

Roger comes from a Geotechnical background and has been an active member of the AGS Data Management Committee since 1997, a member of DIGGS Cone SIG since 2005 and was the co-author of AGSM.

Equipe TrainingLiz Withington of The Geotechnical Academy says “This is on-the-ground practical development for early stage career geo-professionals. The Geotechnical Academy is a partnership between Geotechnical Engineering Ltd & Equipe Training, providing unique, high quality vocational geotechnical CPD development for early career engineering professionals. We are delighted to have Roger Chandler from Keynetix as a regular contributor. Rogers’s innovative approach to geotechnical data management demonstrates The Geotechnical Academy’s commitment to challenging young geo-professionals in to stimulating change within the industry“

Attendees of the academy will gain knowledge, join in practical demonstrations of equipment and techniques, take part in discussion about a wide variety of technical and commercial topics relevant to their work and hopefully have a thoroughly enjoyable experience to inspire them into the future! All training days will be eligible for CPD certification.

For further information or to apply for a place on The Geotechnical Academy , please visit http://www.geotechnicalacademy.co.uk/register_interest.html

Last Updated on Thursday, 05 June 2014 22:14
 
Massive Mudslide In Western Colorado, 3 Missing
GeoNews - Geologic Hazards
Written by Randy Post   
Wednesday, 28 May 2014 00:17
Aerial view of the Mesa County Colorado Mudslide

A massive mudslide approximately 1 mile by 3 miles by 250 feet deep has occured in Western Colorado over the Memorial Day weekend. There are reports that 3 men from the nearby Collbran/Mesa area are missing. According to the Forbes article, the estimates of the size would make it three times the size of the catastrophic Oso landslide in Washington. [Source: Forbes via @CanGeotechJournal. Image: Forbes / Twitter / Denver Post - Photographer AAron Ontiveroz]

 
Baltimore landslide: Is it covered?
GeoNews - Failures
Written by Randy Post   
Wednesday, 28 May 2014 00:04
A car damaged after a retaining wall failure in Baltimore

This is a different perspective on landslides than what I usually blog about on GeoPrac. This banking and insurance website blog post discusses what should and shouldn't be covered on a car owner's insurance policy. Several cars parked along the road were damaged after a retaining wall / slope failure in Baltimore last month. [Source: Read the blog post at Bankrate, Inc.. Image: CBS Baltimore]

 
RockWorks: Geotechnical Applications (RockWorks16 Webinar)
GeoNews - Software Updates
Written by Randy Post   
Tuesday, 27 May 2014 23:56
RockWorks Geotechnical Webinar

This 17 minute webinar by Rockware introduces you to the various geotechnical-related features of RockWorks 16.

RockWorks Geotechnical Webinar Video

[Source: YouTube. Image: YouTube]

 
Weekend CUP for May 19, 2014
GeoNews - Weekend CUP
Written by Randy Post   
Monday, 19 May 2014 05:56

It was time to clear the queue a bit and get rid of some old links I didn't get around to posting about. I hope you enjoy.

 
Magnitude 9.2: The 1964 Great Alaska Earthquake
GeoNews - Geologic Hazards
Written by Randy Post   
Sunday, 18 May 2014 23:37

It's been 50 years since the Magnitude 9.2 Great Alaskan Earthquake so dramatically altered people's perceptions of the power of earthquakes. Check out this short video from the USGS:

[Source: YouTube via AEG Insider. Image: YouTube]

Last Updated on Monday, 19 May 2014 06:40
 
WSDOT Denies $125M Change Order for Seattle Tunnel Partners
GeoNews - Project Related
Written by Randy Post   
Sunday, 18 May 2014 23:22
Section of steel well casing that STP alleges caused damage to Bertha

The WSDOT announced recently that the Seattle Tunnel Partners Joint Venture has requested a total of $188 million in change orders so far, and that the Department has denied $157 million of those, with $31 million worth still under review. Among the change orders rejected was one for $125 million plus additional contract time because STP claimed the Bertha TBM was damaged by a steel well casing. WSDOT's position is that the location of the well casing was included in the contract documents. [Source: WSDOT. Image: Seattle Times Blog]

 
Review of GeotechTools.org – Geo-Construction Information and Technology Selection Guidance
Articles - Miscellaneous
Written by Randy Post   
Tuesday, 13 May 2014 22:34

GeotechTools.orgI first heard about Geotech Tools through a TRB Strategic Highway Research Program (SHRP 2) publication titled Geotechnical Solutions for Soil Improvement, Rapid Embankment Construction, and Stabilization of the Pavement Working Platform. The final version of the report was released in February of this year. The report is one of the project deliverables for the SHRP 2 Project R02.

The primary deliverable of the project and the subject of this review is Geotechtools.org, a web-based tool for geotechnical engineers, structural engineers and pavement engineers. This website is a “toolkit of geotechnical information to address all phases of decision making from planning to design to construction.” What does that mean exactly? Great question. In this article I will give you an overview of the site and its resources and how it might help you on your next project.

Last Updated on Tuesday, 13 May 2014 06:06
 
The Curious Case of No. 57 Stone
Articles - Forensics and Failures
Written by Katherine Witt   
Monday, 12 May 2014 06:31

ASTM No. 57 StoneThe American Society for Testing and Materials, or ASTM, No. 57 stone is often used as sub base fill material below road surfaces and buildings. It is a fragmented stone with angular edges and is regularly utilized as a drainage layer when used with geotextile fabric. Although the material is touted by many as "self-compacting," excess voids left from zero compactive effort in locations with little confinement may not eliminate the possibility of future settlement. What happens when the environment above the No. 57 stone causes it to settle?

[Editor] Read on for the answer to this interesting question in the case of settlement of a structure at the University of North Carolina at Chapel Hill. The contributed article by Katherine Witt describes how URETEK Mid-Atlantic used their high-density polyurethane resin to stabilize the No. 57 stone beneath a settled foundation as well as lift the surrounding slab back into place. [/Editor]

Last Updated on Tuesday, 13 May 2014 06:04
 
Baltimore Retaining Wall Failure Caught on Video
GeoNews - Failures
Written by Randy Post   
Monday, 05 May 2014 23:36

Failed retaining wall in Baltimore, Maryland

A dramatic retaining wall failure and subsequent landslide last week damaged several cars and shut down a rail line in Baltimore, Maryland. The final failure was caught on video by a bystander. The landslide forced a number of residents to be evacuated from their homes.

Video of Baltimore Slope Failure

[Source: See more photos from Baltimore Sun. Image: Landslide Blog]

 

Last Updated on Tuesday, 06 May 2014 06:38
 
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