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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.

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Grain Bin Settlement Problems Common to Concrete Foundations Solved with NCFI’s Geotechnical Polyurethane Foam Technology
GeoNews - Press Releases
Written by Randy Post   
Thursday, 21 July 2016 05:59

Grain bin at a Williamsburg, Virgina poultry processing facility that had foundation settlement issuesNew 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 “settled” areas, form within the bin. Grain accumulates in the depressed areas, but cannot be retrieved by the bin sweeper. In fact, the sweeper, a kind of auger that transports grain up from the floor, can become damaged from prolonged exposure to the uneven floor.

This is exactly what Kirk Roberts of CJGeo, a Williamsburg, Virginia-based commercial foundation repair and geotechnical contractor, found when he got the job to repair the foundation of a massive 106-foot diameter grain bin at a poultry processing facility on the Eastern Shore of Maryland. “Once they removed the hundreds of thousands of bushels of grain, we found the floor had dropped some three inches in one section of the bin leaving a large pocket of grain out of reach of the bin sweeper.”

[Editor] Read on for the rest of this press release from GeoPrac sponsor NCFI Polyurethanes. [/Editor]

Last Updated on Thursday, 21 July 2016 05:59
 
Video: DeWind One-Pass MGP Remediation Project
GeoNews - Miscellaneous
Written by Randy Post   
Wednesday, 20 July 2016 23:38

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: YouTube]

 
GeoNews Collection for July 21, 2016
GeoNews - Miscellaneous
Written by Randy Post   
Thursday, 21 July 2016 06:09

Here's a catch-up-post with a list of articles I didn't get a chance to blog about. Enjoy!

 
DFI Announces the 2016 Outstanding Project Award Winner
GeoNews - Press Releases
Written by Randy Post   
Wednesday, 13 July 2016 05:52

hir120-1Hawthorne, 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 Market Place, a well-known retail, dining and entertainment destination, has undergone a complete revitalization. Hayward Baker was the foundation contractor for the construction of a new 80,000 sq ft Saks Fifth Avenue anchor store, a 7-story parking garage and two 3-story retail structures located on a 6-acre site in a heavily congested area of Waikiki Beach. The company installed 544 micropiles to depths of up to 315 ft to support the structural loads. Difficult site geological conditions and cultural restrictions presented significant challenges for the design and construction of the foundations. The project site was located within the boundaries of an ancestral Hawaiian burial ground that required pre-excavation prior to any installation of below grade improvements. Additionally, two existing historic banyan trees on the site had to remain in place and not be trimmed for equipment access.

[Editor] Click through for the rest of the DFI Press Release. I’m proud to say that Hayward Baker is one of the sponsors of GeoPrac! Congrats to them on the award! [/Editor]

 
Geotechnical Monitoring Technology Seminar
GeoNews - Available Resources
Written by Randy Post   
Wednesday, 13 July 2016 05:34

hexagon_short_course1Hexagon 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, mining, transportation, water quality, and oil and gas. A cross section of industry leading experts will be presenting on exciting topics within our field. A question and answer panel discussion will complete the day, followed by libations.

The Short Course Fee is $95. Space is limited, so please register as soon as you can.

https://portal.leicaus.com/Register/E075/

hexagon_short_course2

Last Updated on Wednesday, 13 July 2016 05:34
 
In-Situ Has New Sales and Rental Catalog
GeoNews - Available Resources
Written by Randy Post   
Tuesday, 12 July 2016 22:53
In-Situ Water Monitoring Products

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 boreholes, or groundwater quality is an issue, you should definitely check out their products. [Source: Go Download the Catalog from In-Situ. Image: In-Situ]

 
TRB Webinar: Visualization of Geotechnical Data for Hazard Mitigation and Disaster Response, a Practical Update
GeoNews - Available Resources
Written by Randy Post   
Wednesday, 29 June 2016 23:46
NCHRP Webinar

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 technology available to practitioners.rnrnParticipants must register in advance of the webinar, and there is a fee for non-TRB Sponsor or non-TRB Sustaining Affiliate employees. A certificate for 1.5 Professional Development Hours (PDHs) will be provided to attendees who register and attend the webinar as an individual. The webinar presenter is Hollie Ellis with Shannon and Wilson, Inc. and it is moderated by Ty Ortiz, Colorado Department of Transportation.rn [Source: Read more and Register by visiting the Transportation Research Board. Image: TRB]

 
New Poll on Rockfall Funding in Colorado
GeoNews - Miscellaneous
Written by Randy Post   
Wednesday, 29 June 2016 23:41
February 2016 Rockfall along I-70 in Glenwood Canyon, Colorado

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 Times]

 
Create borehole logs in your browser, for free
GeoNews - Available Resources
Written by Randy Post   
Thursday, 23 June 2016 07:08

BoreLog_Software ESlogSimple, 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 for desktop software. Data can be manually entered as well as exported from ESdat Environmental Data Management Software.

Please try it out and give us your feedback. http://eslog.esdat.net/

For more information on ESdat and ESlog visit http://esdat.net/ESlog_borelog_presentation_software.aspx

borelog

ESdat is a specialist environmental database system; used to validate, import, analyze and report a broad spectrum of Environmental Data as Exceedance Tables, Graphs, Maps, statistics and more.

ESdat is available as "ESdat Desktop", "ESdat Server", and a completely cloud (web) based "ESdat Online".

ESlog provides for web based generation of borehole logs with no requirement for desktop software. ESlog is designed to be simple and quick to use.

[Editor] ESdat is the newest sponsor of GeoPrac.net!  Please check them out!  You’ll be seeing their banners on the site very soon. [/Editor]

 
Innovative Micropile Construction with DTH System
GeoNews - Project Related
Written by Randy Post   
Thursday, 23 June 2016 00:07
Micropile project in Northern Baltimore County

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 elevation to construct the rock sockets. [Source: Read more about this micropile project and see additional photos at Deep Excavation. Image: Deep Excavation]

 
Video: MIC - Maccaferri Innovation Center
GeoNews - Available Resources
Written by Randy Post   
Wednesday, 22 June 2016 23:57

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 on material production in their factories.
  • Analysis of new applications and defining the technical and promotional tools (calculation methods and documentation.

Maccaferri Innovation Center Video

[Source: Maccaferri YouTube Channel. Image: YouTube]

 
A 1-Minute 'Rock Avalanche' 4,800 Years Ago In Zion National Park
GeoNews - Geologic Hazards
Written by Randy Post   
Tuesday, 14 June 2016 00:04

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 Arizona. I didn't dig up the publication where this Zion Canyon research was written before it went viral, but there are some great figures posted on his website and I'm sure you can click around and find the citation if you are interested. [Source: YouTube via Geoengineer.org. Image: YouTube]

Last Updated on Tuesday, 14 June 2016 00:12
 
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