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FORT LUPTON, CO—An unfortunate inlet line break at one of Anadarko Petroleum's hydraulic fracturing stations in Weld County, Colorado just north of Denver, allowed injection fluid to wash out the end of the pumping station and get beneath the concrete slab foundation causing erosion. The voids created beneath the slabs were from three inches to five inches and left the slab floor uneven. The general contractor for the station, Open Range Services, initially thought to use the legacy method of mudjacking, or pressure grouting: pouring a thick grout of mixed concrete and other aggregates into the void, or backfill, but the "mud" is heavy which can affect the surrounding soil, time consuming, and difficult to apply and clean, and backfilling would have required the costly process of ripping out the slab and replacing it. Instead, they contacted Pro Foundation Technology, based in Kansas City, MO, to learn more about a contemporary technology called "foamjacking" or "polyjacking," which uses lighter weightgeotechnical polyurethane foam instead of grout.
[Editor] Click through for the rest of the press release from GeoPrac.net sponsor, NCFI Polyurethanes! [/Editor]
A good way to begin building a business case for investing in new software and systems is to evaluate the time and cost in carrying out a typical task, such as producing site plans and geological profiles. Byrne Looby Partners have done just this and reaped significant benefits from using HoleBASE SI and the AutoCAD Civil 3D extension on The Irish Water projects.
As Andy Wilkins says, â€˜Everything we do now goes into HoleBASE SI and the Civil 3D extension as it is saving us and our clients a huge amount of time and money. Just by speeding up the generation of geological profiles, we are saving about a week on moderate sized projects. If we are also doing earthworks design we can save another week or two, and if you also add inroad alignments and earthworks quantities, we're saving at least one to two additional weeks as this information literally falls out of the Civil 3D extension. We literally haven't drawn geological profiles for years because we've been using Keynetix software and the Civil 3D extension. It is clear to us that we (and our clients) are saving a lot of time and money.â€™
Keynetix has developed a Geotechnical CAD Cost Calculator to help companies review their own projects and to quickly work out the costs and potential savings that could be made and to evaluate if there is a business case to change. The calculator can show whether this a good short or medium term investment and of course indicates where process efficiencies can be made.
Bentley will be hosting a webinar at two different times on April 5, at 9 a.m. EDT and 5 p.m. EDT for the new gINT Special Interest Group (SIG). They will focus on a current hot topic, Data Transfer. We've all been there. You need to move your data from one project to another, or maybe to another application. So mark your calendar, and invite your colleagues, to learn how to take your gINT usage to the next level. Discussion, demonstration, and Q&A will include:
Practical applications for transferring data into and out of gINT
Tools in gINT to make this transfer easier and repeatable
Tips and tricks to simplify the use of gINT's data transfer tools
If Norway's Stad Ship Tunnel gets approved, it would be located on the Stadhavet Sea, an area known for heavy winds and hurricanes. Stormy weather makes it almost impossible for ships to travel in the area. Vessels often wait for hours or even days before it becomes safe enough to cross. A study has been performed by the Norwegian Coastal Administration (NCA), and their findings are scheduled to be released this May. If approved by the Norway Department of Transport, construction could begin as early as 2019. [Source: View more info at Business Insider via AGC SmartBrief. Image: Norwegian Coastal Administration via Business Insider]
The Geo-Institute's Geo-Frontiers conference was held recently in Orlando Florida. On March 14, 2017, they presented their awards, including the prestigious Karl Terzaghi Award, the Ralph Peck Award and others. This video was shown at the awards banquet. It's a nice video,rn but they need to instruct their voice actor how to say geotechnical...it's not 'Geo Technical'! [Source: Watch the video at the Geo-Institute YouTube Channel. Image: YouTube]
Maybe I missed this when it first happened, but I recently saw that AASHTO's Standard Specifications for Transportation Materials and Methods of Sampling and Testing is no longer being offered as a printed book but now is a web-based publication with a single year subscription fee. It can get pretty pricey for multi-user license. I'm sure it's convenient, but if you are running an AASHTO accredited lab, you probably just have to bite the bullet. I wonder if all of their publications are going this way in the future? [Source: Check out the licensing options at the AASHTO Bookstore. Image: IPP Books]
[Update March 16, 2017] If any of you tried to watch the lecture live on YouTube, I understand there were some technical difficulties. The BGA even issued an appology via email. But you can still watch the recorded version. See below. [/Update]
Prof. Eduardo Alonso from UPC in Barcelona will be presenting this year's Ranking Lecture awarded by the British Geotechnical Association. You can live stream the lecture on YouTube starting at 1:25pm Eastern on Wednesday, March 15. Prof. Alonso will be presenting on the topic: Triggering and Motion of Landslides. [Source: Watch the lecture at the British Geotechnical Association YouTube Channel. Image: YouTube]
The folks at Logiteasy.com have created a great little free online tool that will calculate a USCS soil classification (ASTM D 2487 / ASTM D 2488) based on the percentage of your components and fines type. It's drop dead simple to use with sliders and buttons. [Source: Use the tool for free at LogItEasy.com. Image: Logiteasy.com]
Every tunneling machine needs its cutting tools replaced every now and then. But the challenge is keeping a giant machine sharp while a wall of waterlogged earth looms in front. Welcome to the world of hyperbaric interventions, where crews used compressed air to stabilize the ground and safely complete this high pressure work. This video takes you 200 feet underground for a rare look at hyperbaric work inside Seattleâ€™s SR 99 tunneling machine, Bertha. [Source: WSDOT YouTube Channel. Image: YouTube]
How do you get the most out of the geotechnical data your company or agency spent so much money to obtain? GeoPrac sponsor Keynetix is an expert at answering just that question, and their latest blog post has 5 great tips on how to maximize the use of your data. This is some very actionable stuff for geotechnical engineers, and a must read for anyone who works with subsurface data in gINT, HoleBase or other geotechnical software. [Source: View this interesting article from Keynetix. Image: Keynetix]
Earlier in February severe rain caused the Oroville Dam in Sacramento to reach capacity. The dam is an earth fill dam approximately 770 feet high, making it one of the tallest dams of this type in the Country. On February 11, water began flowing over the emergency spillway, which prior to that point had never been used, and caused erosion at the base of the weir, threatening to undermine the wall at the top of the spillway and potentially cause a catastrophic failure of the dam. Local police officials ordered a massive evacuation of residents downstream of the dam. The dam didn't fail and this week flow across the main spillway was stopped to allow officials time to evaluate the damage. The LA Times article linked below has a good summary of many of the issues that led to this crisis. And this article discusses the most recent developments with the shutting off of the flow at the spillway to evaluate damage. [Source: Read more about the Oroville Dam at LA Times. Image: USA Today]