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Thursday, 18 August 2016

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Terracon acquires Mayes Testing Engineers 

GeoPrac.net [2016-08-18 06:23:41]  recommend  recommend this post  (39 visits) info
Terracon has acquired Mayes Testing Engineers based in Lynnwood (Seattle) Washington. Mayes is a 115 person firm specializing in welding, concrete, soils, masonry, asphalt, and non-destructive testing in the Pacific Northwest. From the Terracon Press Release:Terracon's expansion brings together the acquired resources of Mayes, RGA Environmental, and Argus Pacific all in the Pacific Northwest. Terracon companies now combine to include six Seattle/Tacoma and two Portland, Ore., locations. The [...]

Video: Changing cutting tools on Bertha TBM 

GeoPrac.net [2016-08-18 06:19:36]  recommend  recommend this post  (39 visits) info
This is an interesting video of crews changing cutterhead teeth on the Bertha TBM beneath downtown Seattle. [Source: WSDOT YouTube Channel. Image:

Hayward Baker Expands its Regional Presence with New Office in New Orleans 

GeoPrac.net [2016-08-16 21:46:47]  recommend  recommend this post  (8 visits) info
New Orleans, LA – Hayward Baker Inc., North America’s leader in geotechnical construction, announces the opening of a new office location in New Orleans, Louisiana. The new office will support customers and projects along the Gulf Coast. As an extension of the Houston office, the New Orleans office is spearheaded by recent hire Christopher Rogers, P.E., Project Manager with oversight from Tyson Deklavs, Area Manager. Christopher Rogers, P.E. is a graduate of Mississippi State University [...]

Kleinfelder Names George J. Pierson CEO 

GeoPrac.net [2016-08-16 21:24:08]  recommend  recommend this post  (9 visits) info
SAN DIEGO, California – The Kleinfelder Group announced today that George J. Pierson has been named President and Chief Executive Officer of the firm, effective September 6, 2016. "We are excited to have George join the Kleinfelder team," said Rodger Johnson, Chair of Kleinfelder’s Board of Directors. "George brings experience gained from years of leading a multi-billion-dollar, global infrastructure firm and we will benefit immensely from his leadership as we begin the next stage in our [...]

San Francisco Millennium Tower Has Settled 16 Inches 

GeoPrac.net [2016-08-04 15:06:22]  recommend  recommend this post  (2 visits) info
The residential high-rise Millennium Tower in San Francisco has settled a total of 16 inches since opening, 2 inches deferentially.  A spokesman for the tower owner blames the settlement on the excavation next door for the Transbay Transit Center, a  $2.4 billion dollar project being constructed 60 feet underground. However, the Transbay Joint Powers Authority (Transbay) hired geotechnical firm Arup in 2010.  Their initial report indicated that the tower had already settled 10 inches by [...]

Good Intro Video on Drilled Shaft Construction 

GeoPrac.net [2016-08-04 08:04:59]  recommend  recommend this post  (2 visits) info
This is a really nice video for folks new to the industry who want to learn about drilled shafts. It has some great photos and hits the high points of what the advantages of drilled shafts are, a bit about how they are designed, construction methods and considerations, etc. [Source: Pier Research YouTube Channel via PileBuck Magazine. Image:

GeoNews Collection for July 21, 2016 

GeoPrac.net [2016-07-21 15:09:48]  recommend  recommend this post  (1 visit) info
Here's a catch-up-post with a list of articles I didn't get a chance to blog about. Enjoy! PortMiami Tunnel Project Wins Grand Prize in America’s Transportation Awards Competition - Source: Tunnel Business Magazine Kleinfelder Wins Merit Award for the California Department of Water Resources Levee Evaluations Program - Source: Kleinfelder Geotechnical and Structural Engineering Congress 2016: Selected Papers (ASCE) - Source: ASCE Library Boone Dam Project - Source: TVA [...]

Grain Bin Settlement Problems Common to Concrete Foundations Solved with NCFI’s Geotechnical Polyurethane Foam Technology 

GeoPrac.net [2016-07-21 14:59:53]  recommend  recommend this post  (1 visit) info
New Solution Saves Money and Time Preventing Loss of Grain and Equipment Damage MOUNT AIRY, NC—Soil consolidation and settlement happens. It’s a fact of farm life. Secondary consolidation slowly forces water out of the spaces between soil particles. As this happens, soil particles move close together and settling occurs. Floors drop and become uneven. Newer grain silos and bins are using concrete floors instead of metal, and as secondary consolidation occurs beneath them, depressed or [...]

Video: DeWind One-Pass MGP Remediation Project 

GeoPrac.net [2016-07-21 08:38:22]  recommend  recommend this post  (1 visit) info
This is a cool time-lapse video of a DeWind one-pass trencher installing 350 linear feet of 25' foot deep Groundwater Collection (HDPE slotted 4" pipe backfilled to grade with pea stone) in a single pass under the water table in a single pass. Their method and technology did not require any dewatering, shoring, or open excavations. [Source: YouTube via Read more about this interesting technology and company at DeWind's website. Image:

DFI Announces the 2016 Outstanding Project Award Winner 

GeoPrac.net [2016-07-13 14:52:15]  recommend  recommend this post  (86 visits) info
Hawthorne, NJ (July 7, 2016): The Deep Foundations Institute (DFI) is proud to announce that Hayward Baker is the 2016 Outstanding Project Award (OPA) winner for the design and construction of foundations at the International Market Place in Waikiki Beach, Honolulu, Hawaii. The award will be presented at the DFI International Conference on Deep Foundations, Seepage Control and Remediation (41st Annual Conference) in New York City, October 12-15, 2016. Opening in August 2016, the International [...]

Geotechnical Monitoring Technology Seminar 

GeoPrac.net [2016-07-13 14:34:25]  recommend  recommend this post  (76 visits) info
Hexagon Geosystems is offereing an inexpensive short course on geotechnical monitoring in Denver in on July 21.  Time is short, but it’s not too late to register. July 21 2016 - Hexagon Geosystems - Denver, Colorado (Oxford Hotel) This will be a high-level and engaging Short Course for Engineering and Geotechnical professionals that will cover recent advances in instrumentation and monitoring technology. Information and case studies will be presented from the following industries: civil, [...]

In-Situ Has New Sales and Rental Catalog 

GeoPrac.net [2016-07-13 07:53:52]  recommend  recommend this post  (25 visits) info
In-Situ, the makers of a variety of pressure transducers, piezometers, and other water monitoring equipment, have released a new sales and rental catalog. Some times it can be frustrating to have to wait for a sales person to get back to you with a quote, so I appreciate that they have put prices for sales and rentals in the catalog, it makes life much easier. I know the hydrogeologists in our office use their products extensively, and if you need to monitor groundwater in your geotechnical [...]

TRB Webinar: Visualization of Geotechnical Data for Hazard Mitigation and Disaster Response, a Practical Update 

GeoPrac.net [2016-06-30 08:46:06]  recommend  recommend this post  (18 visits) info

 US
TRB will conduct a webinar on Wednesday, July 20, 2016 from 2:00PM to 3:30PM ET that features research from National Cooperative Highway Research Program (NCHRP) Synthesis 467: Visualization of Geotechnical Data for Hazard Mitigation and Disaster Response. This webinar will discuss the report, which provides an overview of the visualization tools and techniques used for mitigating geotechnical hazards and responding to geotechnical disasters. The webinar will also provide examples of the [...]

New Poll on Rockfall Funding in Colorado 

GeoPrac.net [2016-06-30 08:41:41]  recommend  recommend this post  (15 visits) info

 US
Roads and Bridges magazine has a new poll out regarding rockfall mitigation funding for the Colorado DOT. According to the magazine, limited funds are forcing the agency to prioritize and be creative when tending to these hazards. The poll asks if there should be dedicated funds for rockfall mitigation? What do you think? [Source: Please visit Roads and Bridges website and look for the poll on the right-hand side to voice your opinion. Image: Aspen

Create borehole logs in your browser, for free 

GeoPrac.net [2016-06-23 16:08:50]  recommend  recommend this post  (54 visits) info
Simple, fast and intuitive web based software. No Licence, No Setup, No cost, Start Immediately. If you've been producing borehole and well logs in traditional ways through desktop database applications, such as gINT and WinLog, or even Excel! we would recommend you try the latest version of ESlog: bore log presentation software. No installation or credit card are required. ESlog is simple, fast and intuitive web based software for the reporting of boring and well log data with no requirement [...]

Innovative Micropile Construction with DTH System 

GeoPrac.net [2016-06-23 09:07:56]  recommend  recommend this post  (12 visits) info

 US
Our friends at Deep Excavation posted about an interesting micropile case study in Northern Baltimore County for a bridge replacement project. The project consisted of 38 Micro Piles; 7” OD X 38 ft. deep including a 7 ft. rock socket, installed on a 3/1 batter, load tested to 272,000 lbs. What caught my attention is the down the hole hammer system used for installing the micropiles. The system uses a ring bit to install the casing and allow the drill string to continue beneath the bedrock [...]

Video: MIC - Maccaferri Innovation Center 

GeoPrac.net [2016-06-23 08:57:20]  recommend  recommend this post  (12 visits) info

 IT
Maccaferri has a unique research facility, the Maccaferri Innovation Center (MIC), located in Bolzano, Italy. Maccaferri was founded based on their invention of the now ubiquitous gabions, but are now known worldwide as experts in and suppliers of all manner of erosion protection products, geosynthetics, rockfall fences and rockfall meshes, debris flow barriers, and much more. The objectives of the MIC are:Definition of new products and / or innovative solutions.Analysis of the implications [...]

A 1-Minute 'Rock Avalanche' 4,800 Years Ago In Zion National Park 

GeoPrac.net [2016-06-14 09:04:29]  recommend  recommend this post  (16 visits) info

 KM,US
Imagine the scene 4,800 years ago when a rock avalanche nearly 2 km long buried much of the Zion Valley in a matter of 90 seconds, creating a dam on the Virgin River that flooded essentially the entire floor of the canyon that millions of visitors enjoy every year. The researchers that analyzed this event are in the Geohazards group of the University of Utah led by Dr. Jeff Moore. Dr. Moore happens to be an old classmate of mine from the geological engineering program at the University of [...]

Keynetix' Roger Chandler delivers Sowers Symposium State of the Practice Lecture 

GeoPrac.net [2016-06-14 09:03:32]  recommend  recommend this post  (13 visits) info

 US
Roger Chandler of Keynetix was the State of the Practice lecturer at this year's Sowers Symposium at Georgia Tech to commemorate the life of George F. Sowers. Roger's lecture was titled 'Transforming Geotechnical Data' discussed the way different countries value geotechnical data. Keynetix is a sponsor of GeoPrac.net. [Source: Read more about the evening on the Keynetix website. Image:

Gotthard tunnel, world's longest, opens in Switzerland 

GeoPrac.net [2016-06-06 09:41:45]  recommend  recommend this post  (17 visits) info

 CH,
The Swiss and many other European dignitaries celebrated the opening of the World's longest and deepest tunnel last week, the Gotthard Base Tunnel, after 17 years of construction. The tunnel beneath the Swiss Alps is 57-kilometers long (35-miles long) reaching a depth of 2,300 meters (7,545 feet, almost 1.5 miles). The tunnel will create a high-speed rail link between northern and southern Europe. Trains will travel the tunnel, which runs between the towns of Erstfeld in the north and Bodio in [...]
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