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San Francisco Millennium Tower Has Settled 16 Inches
Misrepresents actual foundation geometry. Photos show deep excavation to ne
New FHWA Soil Nail Manual Addresses LRFD, Hollow Bars
Good evening from Barcelona, Spain. I am witting to you because of I am le
Engineering Geologists vs Geological Engineers vs Geotechnic
Geological engineer from Spain (looking for job smiley geoengineer.martin@gmail
A Whole Lotta Shakin' Goin' On: Center for Geotechnical Mode
Randy, While the UC Davis lab is impressive I believe the USACE Centrifuge
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Balfour Beatty patents UK's first zero waste piling system PDF Print E-mail
Written by Randy Post   
Wednesday, 11 December 2013 23:23

System by Junttan and Balfour Beatty that reduces pile waste with precast concrete piles

Normally when driven piles are used as deep foundation elements, there is a large amount of pile waste when the portion of the piles left sticking up out of the ground are cut off to the desired elevation. UK piling contractor, Balfour Beatty and Finnish company Junttan have created a system that attaches to piling rigs and cuts off precast concrete piles as low as about 4 inches from the ground surface. The cut pieces are then used as starter pieces for the next pile. Balfour Beatty calculates that each precast concrete pile delivered to the site represents approximately 90 to 130 pounds of CO2 released into the atmosphere. They estimate that implementing this system on two piling rigs to date will translate into 2,000 metric tons of reduced CO2 emissions per year. [Source: Construction Enquirer via ASCE SmartBrief. Image: Construction Enquirer]

Last Updated on Thursday, 12 December 2013 06:34
 
Crux Featured in Micropile Technology for Transmission Line Foundations Photo Gallery PDF Print E-mail
Written by Randy Post   
Sunday, 08 December 2013 23:26
Crux subsurface drilling micropile casing for transmission line foundation

Crux Subsurface is a unique drilling company, getting their start with limited and difficult access geotechnical drilling, but in recent years, they have branched out into micropile foundation design and construction. They frequently work for the power sector installing transmission line foundations in locations that most other companies couldn't access. This photo gallery is on a Power industry publication website, and showcases some of Crux' work. [Source: Check out the photo gallery at TDWorld via Crux Subsurface. Image: T&D World]

 
RST Announces New Borehole Profile Sensor PDF Print E-mail
Written by Randy Post   
Wednesday, 04 December 2013 23:30
RST new borehole profile sensor

RST's new borehole profile sensor can measure the orientation of boreholes raked above horizontal, such as drain holes. Most other equipment is designed to use a wheeled probe and grooved casing. This sensor uses MEMS technology and rigid rods and is inserted into the hole. It can also be used to profile boreholes of different diameter or nominal plunge. Data is collected using RST's ultra rugged field PC which can connect via bluetooth. [Source: Read more and download a brochure at RST Instruments Ltd.. Image: RST Instruments]

 
2012 Peck Lecture by Craig Benson on Geosynthetic Clay Liners PDF Print E-mail
Written by Randy Post   
Monday, 25 November 2013 23:23

2012PeckLectureThumbnailDr. Craig Benson of the University of Wisconsin delivered the 2012 Peck Lecture at the Geo-Institute’s Geo-Congress in Oakland. The GI just released a video of the lecture on their YouTube Channel. The title of his lecture was “Bentonite Barriers for Geoenvironmental Containment: Lessons Learned from Full-Scale Applications”. You can watch the lecture on the Geo-Institute YouTube channel.

Last Updated on Wednesday, 04 December 2013 06:06
 
2013 Terzaghi Lecture by Skip Hendron on Dam Safety PDF Print E-mail
Written by Randy Post   
Monday, 25 November 2013 23:19

2013TerzaghiLectureThumbnailThe Geo-Institute has released the 2013 Terzaghi Lecture onto their YouTube channel. “Skip” Hendron, Professor Emeritus at University of Illinois at Urbana-Champaign presented his lecture on “Improving Dam Safety with Lessons Learned from Case Histories of Dam Failures and Unacceptable Dam Performance”. Go check out the video on the Geo-Institute's YouTube Channel.

Last Updated on Wednesday, 04 December 2013 06:06
 
New method for settlement-based helical pile design PDF Print E-mail
Written by Randy Post   
Tuesday, 05 November 2013 16:36
Deep Excavation Helical Pile Settlement Approach

Dimitrios at Deep Excavation posted an article last month about a new settlement method for helical piles that he is developing with Michael Perlow. The method is already showing promising results according to the article. It will ultimately be built into Deep Excavation's HelixPile software for analysis and design of helical piles, maybe it's already in there. [Source: Check out more at Deep Excavation. Image: Deep Excavation]

 
Video: Stephen Wright gives 2013 H.B. Seed Lecture on Slope Stability Calculations PDF Print E-mail
Written by Randy Post   
Monday, 21 October 2013 08:27

The 2013 H. Bolton Seed Lecture at Geo-Congress 2013 was given by Prof. Stephen Wright of UT Austin, a living geo-legend and one of the world's foremost experts on slope stability. His lecture is destined to be a classic, and was recently released on the Geo-Institute's YouTube channel. If you are a geotechnical engineer, make it a point to set aside the time to watch this lecture!

 
Geoengineer.org launches GeoSoftware Database PDF Print E-mail
Written by Randy Post   
Monday, 21 October 2013 01:25
Geoengineer.org GeoSoftware Database

Geoengineer.org has launched a new GeoSoftware directory, sure to be the go-to resource for our industry. The complete revamp of their previous directory will allow software vendors to provide news and video related to their products, and allow visitors to provide ratings and submit questions to the geotechnical software vendors. [Source: Check out the new GeoSoftware database at Geoengineer.org. Image: Geoengineer.org]

 
Guide for Conducting Forensic Investigations of Highway Pavements PDF Print E-mail
Written by Randy Post   
Sunday, 29 September 2013 23:30

TRB Guide for Conducting Forensic Investigations of Highway Pavements

TRB's National Cooperative Highway Research Program Report 747: Guide for Conducting Forensic Investigations of Highway Pavements explores a process for conducting forensic investigations of pavements that is designed to help understand the reasons behind premature failures or exceptionally good performance. The process also allows for the collection of data for use in developing or calibrating performance-prediction models.

The report includes example forms and checklists for use during the conduct of an investigation. These forms can be modified to suit the particular requirements and procedures for the agency. The example forms are included with the print version of the report in CD-ROM format. [Source: Download the Report and/or CD ISO from TRB. Image: TRB]

Last Updated on Monday, 30 September 2013 06:35
 
Video: Humes Segmental Shafts for Vertical Caisson Construction PDF Print E-mail
Written by Randy Post   
Monday, 23 September 2013 06:05

Last Updated on Monday, 23 September 2013 06:05
 
ADSC Technical Library Catalog PDF Print E-mail
Written by Randy Post   
Monday, 29 July 2013 23:35
ADSC Technical Library Catalog

The Association of Drilled Shaft Contractors or ADSC has a catalog of their technical library available through their website. ADSC has countless useful publications for drilled shaft designers, most of them very reasonably priced for members and non-members. [Source: ADSC. Image: ADSC]

 
TECCO Full-Scale Tilt Test PDF Print E-mail
Written by Randy Post   
Tuesday, 23 July 2013 06:45

This is a pretty neat video of Geobrugg AG Tecco slope stabilization mesh. They created a full-scale test setup with their TECCO mesh product restraining some knd of gravelly backfill. Then they tilted the entire setup up to 85 degrees and the system held. 

Last Updated on Tuesday, 23 July 2013 06:45
 
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