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The Evolution of Sonic Drilling, from Inventor Ray Roussy
Thanks for sharing nice information smiley
Novotech Launches Becker Penetration Test Software (NovoBPT)
As an alternative source NovoBPT is also available at
Recording Geotechnical Drill Rig Parameters
Thanks, for the insight, Howard. I think you're probably right about the "t
Recording Geotechnical Drill Rig Parameters
This type of data recording is old hat in the oil & gas drilling biz (for e
Weekend CUP for May 19, 2014 PDF Print E-mail
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 PDF Print E-mail
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 PDF Print E-mail
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]

Baltimore Retaining Wall Failure Caught on Video PDF Print E-mail
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
Joseph Welsh of Hayward Baker Receives 2014 Opal Award from ASCE PDF Print E-mail
Written by Randy Post   
Monday, 05 May 2014 23:23
Joseph Welsh of Hayward Baker accepting his 2014 Opal Award from ASCE

Former Hayward Baker Vice President Joseph Welsh received the ASCE Opal Award for his 'lifetime accomplishments of noteworthy advancements in construction, and the many contributions he provided the civil engineering industry over the past 50 years.' His bio on Hayward Baker's website is very impressive. Mr. Welsh has been involved in many high-profile geotechnical projects, including the Central Boston Artery Tunnel, and Malaysia Petronas Twin Towers.

His extensive list of achievements also includes assisting with the introduction of jet grouting, fracture grouting, fine grain cement, dynamic deep compaction, vibro displacement and replacement, the use of fabrics for concrete forming, and deep soil mixing techniques in the United States.
[Source: Read more at Hayward Baker. Image: Hayward Baker]

Keynetix Geotechnical Data Hub is 4 Years Old! PDF Print E-mail
Written by Randy Post   
Monday, 05 May 2014 23:02
Geotechnical Data Hub turns 4

The Geotechnical Data Hub group on Linkedin recently turned 4 years old. Founded by Keynetix, this group is home to over 3,000 members with discussion topics covering all range of geotechnical data management. [Source: Read more and find out how to join at Keynetix. Image: Keynetix]

Keynetix Release Standalone Data Entry Module for HoleBASE SI PDF Print E-mail
Written by Randy Post   
Tuesday, 29 April 2014 23:29

HoleBASE SI data entry module

GeoPrac sponsor Keynetix has released a stand alone data entry module for their HoleBASE SI geotechnical software program. The module is roughly 1/3 of the cost of the full HoleBASE SI license and has a customizable interface that is optimized for entering geotechnical borehole or other data as efficiently as possible. Go check out more at their website and see some video demos of the product in action. [Source: Read more about the data entry module at Keynetix. Image: Keynetix]

Last Updated on Wednesday, 30 April 2014 06:34
Settle3D 3.0 by Rockscience Adds New Features PDF Print E-mail
Written by Randy Post   
Tuesday, 29 April 2014 23:27

Rockscience Settle3D geotechnical software for analyzing settlement and consolidation

Rockscience has been busy soliciting feedback from their user base on news features for their settlement analysis software program, Settle3D. After receiving all of the feedback in the beta program, many of the user suggestions have been implemented by Rockscience in the Version 3.0 release of Settle3D. Some of these improvements include the ability to model non-horizontal soil layers, user interface improvements, new options for defining water level, enhanced graphing capabilities, and 64-bit parallel processing. [Source: Read more from Rockscience via Rockscience's Settle3D page.. Image: Rockscience]

Last Updated on Wednesday, 30 April 2014 06:33
Bertha TBM Won't Resume Drilling Until March 2015 PDF Print E-mail
Written by Randy Post   
Monday, 21 April 2014 23:52
Bertha repair plan calls for excavating a shaft in front of the TBM.

Seattle Tunnel Partners released a new schedule this week for the repair of the damaged seals on the Bertha Tunnel Boring Machine. This revised schedule shows that the TBM won't be digging again until March of 2015. The excavation of the pit to access the TBM will begin at the end of May, a delay caused by additional archaeological work. By October they hope to have the cutterhead removed to conduct the repairs, and the machine will undergo testing in February of 2015 with tunneling resuming in March of 2015. [Source: WSDOT. Image: WSDOT]

Repair of Earthquake Damaged Concrete Bridge Piers with PileMedic PDF Print E-mail
Written by Randy Post   
Monday, 21 April 2014 23:49

[Source: YouTube. Image: YouTube]

Two Geoprofessional Among 2014 Recipients of Grade of Distinguished Member of ASCE PDF Print E-mail
Written by Randy Post   
Monday, 21 April 2014 23:34
Jean-Louis Briaud

Two well-known geoprofessionals were among the eleven given ASCE's highest honor this year, the title of Distinguished Member. Jean-Louis Briaud and Thomas D. O'Rourke were both in this year's class. There is a link to their bios in the ASCE blog post. Congratulations to both gentlemen, very well deserved. [Source: ASCE Roundup. Image: Texas A&M]

Conceptual Plan for Excavation to Repair Bertha TBM PDF Print E-mail
Written by Randy Post   
Wednesday, 09 April 2014 23:28

Seattle Tunnel Partners has released a conceptual plan showing what the excavation of the pit will look like to repair the damaged Bertha Tunnel Boring Machine. See below.

STP conceptual repair plan for Bertha.

A pit 120 feet deep and 83 feet in diameter will be excavated so that the TBM can be driven into the pit and the cutterhead removed. Crews will then repair the seal system around the main bearing. [Source: WSDOT, Image Credit: Seattle Tunnel Partners and Brierly Associates by way of WSDOT]

Last Updated on Thursday, 10 April 2014 06:34
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