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Tuesday, 18 August 2015

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CRWV Airport Authority, Triad Answer Yeager Airport Landslide Complaint 

GeoPrac.net [2015-08-18 14:44:35]  recommend  recommend this post  (19 visits) info

 US
Plaintiffs whose homes were destroyed by the Yeager Airport Landslide in March of 2015 filed a suit naming Central Regional West Virginia Airport Authority and Triad Engineering as well as several others. The CRWVAA and Triad have filed answers to the complaint, and two other plaintiff have filed motions to dismiss themselves from the lawsuit according the the West Virginia Record. Apparently Triad was monitoring the mechanically stabilized earth retention structure as far back as 2013 when [...]

A Whole Lotta Shakin' Goin' On: Center for Geotechnical Modeling Facilitates Seismic Research 

GeoPrac.net [2015-08-18 14:15:55]  recommend  recommend this post  (19 visits) info

 AF,US,IN
How would you feel if you were subjected to 75Gs of centrifugal force? Well, at least you would know what the soil feels like in some of the cutting edge geotechnical modeling being done at the UC Davis Center for Geotechnical Modeling (CGM). This article is a fascinating overview of the history of the lab, and the types of geotechnical experiments they can run using the 9 meter radius centrifuge. It can spin a 5-ton payload at 90 revolutions per minute! No other lab in the world can boast [...]

Video of DeWind One Pass Trenching MT2000 Trencher Installing Soil Bentonite Cutoff Wall 

GeoPrac.net [2015-08-04 09:20:29]  recommend  recommend this post  (27 visits) info
Modified from the YouTube description: Video of a DeWind One-Pass Trencher installing a Soil-Bentonite Wall 55' deep. This is a mix in place technology capable of installations up to 125' feet deep. The soils are evenly homogenized with the additives from top to bottom and from start to finish. An Average of 300 LF installed per day. No messy mixing ponds, open excavations, very little spoils, One piece of equipment and only 4 men are required for this 5000 LF installation reducing safety [...]

The Earthquake That Will Devastate Seattle 

GeoPrac.net [2015-08-02 23:04:32]  recommend  recommend this post  (26 visits) info
This is a fantastic article by Kathryn Schulz for New Yorker Magazine on the seismic and tsunami hazards associated with the Cascadia Subduction Zone in the Pacific Northwest. Ms. Schulz paints a very vivid picture of what the devestation will look like based on input from many people who know what they are talking about, geologists, seismologists, FEMA officials, and State and Local disaster planning folks. This article was so effective, that NPR reported a run on survival kit supplies in [...]

The World's Longest (and Scariest) Glass Pedestrian Bridge 

GeoPrac.net [2015-07-31 10:15:27]  recommend  recommend this post  (26 visits) info

 CN,SG
Check out this proposed bridge in China's Zhangjiajie National Forest. It has a span of 1,200 feet and is over 1,300 feet off the ground. The majestic landscape was reportedly the inspiration for the Halleluja Mountains of James Cameron's movie Avatar. The bridge architect that designed it initially refused saying the landscape was too beautiful to put a bridge there. But agreed only if they could design a bridge that would 'disappear'. The 20 foot wide platform is slated to host fashion [...]

GroundProbe Releases New In Pit Radar 

GeoPrac.net [2015-07-31 10:14:40]  recommend  recommend this post  (25 visits) info

 AU
GroundProbe has released a new slope stability monitoring radar for use in pit. The SSR-FX is designed to aid in increasing safety and productivity in mines. According to GroundProbe CEO John Beevers:"The SSR-FX is the first product in our range of broad area monitoring solutions; it uses new antenna technology not yet seen in the mining industry, to scan 180 degrees every two minutes with sub millimeter precision, over long periods,"rn [Source: Mining Australia. Image: Australian

Controversy and Finger Pointing in 2014 Landslide in North Salt Lake 

GeoPrac.net [2015-07-31 09:24:41]  recommend  recommend this post  (29 visits) info

 US
The couple owning a house up-slope from a massive 2014 landslide is accused of overwatering their lawn, leading to the landslide in a lawsuit filed by the developer. The developer also blames a natural gas company, and some other nearby construction, but had denied any responsibility for the slide. In a countersuit, the two homeowners say they are being scapegoated and blame a natural gas company that owns and operates two pipelines near the slide, two geotech firms that studied the land [...]

Federal Highway Administration Launches New National Tunnel Inspection Program 

GeoPrac.net [2015-07-27 10:00:05]  recommend  recommend this post  (33 visits) info

 US
New Initiative Modeled After Longstanding Bridge Program WASHINGTON –The U.S. Department of Transportation’s Federal Highway Administration (FHWA) today published the final rule for national tunnel inspection standards that will serve as the foundation of the nation’s first standardized tunnel inspection program. It will be modeled after the FHWA’s successful bridge program established nearly a half-century ago to ensure the safety of the nation’s bridges. [...]

Geocomp to Provide Engineering Services for Fukushima Ice Wall 

GeoPrac.net [2015-07-27 10:00:02]  recommend  recommend this post  (30 visits) info

 JP,US,GB
After the 2011 Fukushima earthquake, the reactors at TEPCO's nuclear facility began leaking radioactive groundwater. The plan to contain the contamination is to use ground freezing to construct an "ice wall" to cutoff the flow. Acton, Massachusetts based Geocomp has been contracted by TEPCO to provide engineering services for the ground freezing. Geocomp has subcontracted specialty geotechnical contractor and GeoPrac sponsor Moretrench to provide their specialty ground freezing [...]

Selected IFCEE 2015 Articles Free for Limited Time 

GeoPrac.net [2015-07-27 10:00:00]  recommend  recommend this post  (30 visits) info

 US
The 2015 International Foundation Congress and Equipment Expo was held in San Antonio back in March of this year.  The proceedings from IFCEE 2015 are now available online and for purchase at the ASCE Library.  However, they are offering a selection of papers for free for a limited time, you just need to be registered with ASCE Library. You can register for free to get access if you haven’t already. Group Effects on Piles Behavior under Lateral Loading Pooya [...]

Site Characterization Services: Step 1 Data Mining 

GeoPrac.net [2015-07-17 08:33:49]  recommend  recommend this post  (29 visits) info
A nice video from Terracon on the first step for a geotechnical engineering investigation. [Source: Terracon YouTube Channel. Image:

Winners of the First Annual Golder Foundation Awards 

GeoPrac.net [2015-07-17 08:15:02]  recommend  recommend this post  (41 visits) info
The Golder Foundation presented the first annual awards to six students in the fields of Ground Engineering and Contaminant Site Assessment and Cleanup. The cash awards, totaling $40,000 USD, are meant to encourage and recognize technical excellence in some of the areas that Golder practices in.   The Golder Foundation was created in 2013 and aims to further knowledge and learning by opening the technical archives of our founders and some senior staff; through sharing Golder's distinct [...]

New DeWind One-Pass Trencher–World’s Largest! 

GeoPrac.net [2015-07-13 15:31:01]  recommend  recommend this post  (35 visits) info
This slide courtesy of DeWind pretty much says it all!

Historic Brewery Restored With Help of Geopolymer 

GeoPrac.net [2015-07-13 15:24:52]  recommend  recommend this post  (32 visits) info

 US
Turning a 119 year old brewhouse into a four-star boutique hotel is no easy task. For the project to be a success, the structure had to literally be raised from it’s grave. Pearl Brewery operated from 1883 until 2001 in their downtown San Antonio, Texas location. It was once the largest brewery in Texas, and even kept afloat during the Prohibition era. Today the 22- acre Pearl site grounds has become a culinary gathering place where you can eat, live, learn, and play on the banks of the [...]

Hatch Mott MacDonald Wins ACEC Grand Award for Niagara Tunnel Project 

GeoPrac.net [2015-07-01 09:24:15]  recommend  recommend this post  (34 visits) info

 CA,
Hatch Mott MacDonald received the prestigious ACEC Grand Award at the 2015 Engineering Excellence Awards Gala on April 21. ACEC had this project description in their program:More than six miles long and 43 feet in diameter, the new Niagara Tunnel is the largest renewable energy project in the world. Providing much-needed power for the city of Niagara Falls, it is located deep beneath the city and is more than one and a half times wider than the English Channel Tunnel.I blogged about this [...]

Moretrench Wrapup of Rapid Excavation and Tunneling Conference 

GeoPrac.net [2015-07-01 09:09:04]  recommend  recommend this post  (17 visits) info

 US
GeoPrac sponsor Moretrench was very active at the recent Rapid Excavation and Tunneling Conference in New Orleans earlier this month. VP Paul Schmall helped teach a short course on grouting in underground construction, and Director of Ground Freezing Technology, Joe Sopko, co-chaired the Grouting and Ground Modification technical session, and there were three technical papers presented on Moretrench projects. [Source: Visit the Moretrench Blog to read more about the conference and see what [...]

2015 Seed Lecture - Peter Robertson on Liquefaction 

GeoPrac.net [2015-06-24 07:49:07]  recommend  recommend this post  (27 visits) info

 US,CA
Peter K. Robertson, Ph.D., P.Eng, Professor Emeritus, University of Alberta, Technical Advisor, Gregg Drilling & Testing Inc. is the 2015 recipient of the H. Bolton Seed Medal for outstanding contributions to teaching, research, or practice in geotechnical engineering. He presented his keynote lecture at the 2015 IFCEE Conference in San Antonio. The title of the presentation was Evaluation of Soil Liquefaction - How Far Have We Come in the Past 30 Years? [Source: Don't forget to [...]

Controversy Over Rafting Trip Through Site of Oso Landslide 

GeoPrac.net [2015-06-24 07:48:17]  recommend  recommend this post  (19 visits) info

 US
A professional river guide came under fire for a rafting trip through the site of the Oso landslide. Families of the victims issued a cease and desist order, but the trip happened anyway. Opponents of the trip likened it to taking a trip through a graveyard, that it was disrespectful to those that died in the tragedy. Others noted that places like the site of the Boston bombing and the World Trade Center did not get to become off limits after their tragedies. The guide said that it was his [...]

NovoLIQ Introduction Video 

GeoPrac.net [2015-06-15 08:06:26]  recommend  recommend this post  (23 visits) info
NovoLIQ software by GeoPrac sponsor Novotech allows geotechnical engineers to perform soil liquefaction analysis. NovoLIQ covers several liquefaction triggering analysis including post liquefaction parameters and dry sand settlement. This program covers SPT, Vs and BPT and calculates factor of safety and many other analyses results. [Source: YouTube. Image:

Transitioning from Geotechnical Consulting to Contracting | 2015-04-28 | National Driller 

GeoPrac.net [2015-06-15 01:06:02]  recommend  recommend this post  (22 visits) info
National Driller magazine had a nice article not to long ago interviewing Kord Wissman about his transition from consulting to contracting. Kord is the President of Geopier Foundation Company (owned by Tensar). He has some very interesting insights, it's worth the read. I admire Kord as well for his involvement with the Geo-Institute and the GBA, he is very generous with his time and talents, more of us should be like him! I think GBA members can listen to his 'Going to the Dark Side' [...]
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