Posts treating: "frontpage"
Friday, 17 April 2015
A team from Northeastern University has a very interesting van used for quantitatively assessing pavement condition using a variety of sensors. They use cameras, laser profilers, accelerometers on axles, pressure sensors in the tires, microphones, and even ground penetrating radar. The researchers reportedly characterized pavement condition of 150 miles of road in 4 days in Beverly, Massachussets, a task that took public employees about 1 year the last time it was performed, in 2010. The [...]
Not too much to say about this, but check out the photo. The entire westbound portion of US Highway 52 near the Ohio River was closed last week as a house-sized boulder and other rockfall debris landed on the roadway. Crews anticipated it would take several days to clear the material and reopen the road. [Source: WLWT News via USGS Landslide Events. Image: Kentucky Transportation Cabinet via
SALT LAKE CITY, April 13, 2015 /PRNewswire/ -- Boart Longyear (www.BoartLongyear.com), the world's leading provider of integrated drilling services and drilling products, is proud to introduce the LS™250 MiniSonic™, a compact rig suitable for a wide variety of environmental, geotechnical, water and mining projects.
Capable of drilling to depths of up to 250 feet (78m) when used with 4.75 inch (121mm) casing, the wide 600mm rubber tracks provide low ground pressure (.28 bar/4psi) [...]
Since March of 2003, the FHWA’s Geotechnical Engineering Circular Number 7 (GEC No. 7) has been the standard reference document for design and construction of soil nail retaining walls in roadway applications, and really in all applications. The FHWA has released an updated version of this manual as of February of 2015. This new version is still called GEC No. 7, but now titled “Soil Nail Walls Reference Manual.” You can download the document from the FHWA’s [...]
There was a significant slope failure at the Yeager Airport near Charleston, West Virginia last week. A 2005 project to create an Engineered Material Arresting System (EMAS) at the end of the runway required a massive reinforced soil structure fill slope over 200 feet high since the airport was constructed on top of a hill. According to a presentation published by the geogrid manufacturer, this project was the tallest known geosynthetic reinforced 1:1 fill slope in North America (as of 2010). [...]
National Driller has a nice interview with the 2015 Terzaghi Lecturer, Donald Bruce, President of Geosystems. Bruce, best known for his expertise in grouting, will deliver his Terzaghi Lecture at this week's IFCEE conference in San Antonio. [Source: Read the interview at National Driller. Image: National
Advanced Construction Technology Services (ACTS) has contracts for geotechnical work for 3 lines of the proposed subway in Doha, Qatar. They have completed investigations for approximately 95 km of line and 51 stations and are currently working on the recommendations for track designers. The contract for the these services is worth approximately $1.37 million. [Source: Trade Arabia. Image: Trade
EarthScience Information Systems (ESCIS) is pleased to announce the release of the Shoalhaven City Council Aqua Data website, a branding of the ESdat Public Portal.
Aqua Data is a web-portal providing greatly enhanced community access to the results of water quality monitoring completed by Shoalhaven City Council (SCC). Aqua Data is the public interface of a detailed system designed to streamline the way SCC manage and share environmental data.
Aqua Data is accessed via a link on the [...]
WSDOT reported that Bertha has slowly began moving again. It must tunnel through 20 feet of unreinforced concrete with its broken seal to break through into the rescue shaft. Once that happens, the repairs to her cutterhead can commence. The Seattle Tunnel Partners predict Bertha will overheat, as she did before stopping for repairs. If that occurs, they will stop tunneling to wait for the machine to cool before continuing. STP crews also chipped away at a Bertha-sized cut-out in the [...]
National Driller magazine recently republished a paper by authors from GRL Engineers Inc. and Pile Dynamics Inc. (PDI) describing a demonstration project for the Texas Department of Transportation involving thermal integrity profiling (TIP) of soil nails. TIP involves using the thermal energy created by curing concrete to determine the shape of a grout or concrete body and the position of reinforcement within a grouted or concreted hole. It has been used successfully for QC of drilled shafts [...]
The Alaskan Way Viaduct tunneling project was in the news late last year when settlement of the Viaduct was reported during the dewatering efforts for the Bertha TBM rescue shaft. A recent post by WSDOT makes it clear that the settlement of the viaduct has been a problem for many years before the start of construction. The most recent round of monitoring by WSDOT began in 2001 after the completion of repairs to the the Viaduct following the Nisqually Earthquake. By 2006, a total of 4 3/4 [...]
Redditch 30th Jan 2015 - The new release of HoleBASE SI includes ‘scheduling tools’ that allow engineers to electronically schedule geotechnical or environmental testing. This major breakthrough is likely to transform the way consultants and laboratories communicate with each other over the coming months.
The new improvements also provide a glimpse of how well integrated customers and laboratories can be with the first UK wide implementation of a web service connection to [...]
Hawthorne, NJ (February 11, 2015): Gerald Verbeek, of Verbeek Management Services (VMS), has accepted the position of chair of DFI’s Testing and Evaluation Committee. Verbeek succeeds outgoing chair, Don Robertson of Applied Foundation Testing, who led the committee since 2013.
In 2004, after 20 years in the oil and gas industry, Verbeek started VMS, a management consulting business. One of the firm’s activities is helping European companies with their business in North America. [...]
The geotechnical software company Deep Excavation has a nice entry on their blog about the cofferdams for the Tapan Zee Bridge in New York. Geotechnical firm Siefert Associates used the DeepExcav software to design the cofferdams which are needed to create the pile cap for the new bridge piers. [Source: Read more about the design of these cofferdams at the Deep Excavation website.. Image: Siefert Associates via Deep
The excavation has been completed for the access shaft or rescue shaft that was needed to be able to remove the damaged cutterhead of the Bertha TBM on the Alaskan Way Viaduct Replacement project in Seattle. The target depth of 120 feet was reached on January 30. WSDOT reports that settlement levels have remained stable in the pit area after an earlier settlement issue. In addition to the project update on the WSDOT project page, there is an excellent article on the work done by Malcom [...]
MOUNT AIRY, NC—NCFI Polyurethanes officially launched its new online informative and educational content presence today: www.NCFI.com. The new website replaces the former corporate site, and eight former brand-specific sites.
“We found we need to roll everything up under the NCFI umbrella,” says Chip Holton, President of NCFI. “We turned fifty last year, and our name is well-known and trusted for experience producing the highest quality American engineered and [...]
GeoPrac sponsor Nicholson Construction posted a press release at the end of 2014 that I somehow missed. They have a new President, former Hayward Baker Senior VP Steven Scherer has taken the reins. He has quite an impressive resume in the geotechnical construction business, and is well respected in the industry. [Source: Read the press releases from Nicholson Construction Company. Image: Nicholson Construction
GeoPrac sponsor Keynetix has released a video tutorial on how to create geology solids in AutoCAD using Civil 3D. This is a new and improved technique using the Civil 3D productivity pack 1. [Source: Keynetix YouTube Channel. Image: YouTube]
RockWare has released an update to their popular geological and geotechnical software package, RockWorks 16. It's pretty clear these folks are not sitting back on their heels but continuing to develop and push out new features. One thing that caught my eye was the ability to add faulting to many different gridding options. Check out the full list of updates on their blog at the link below. [Source: The RockWare Blog. Image:
The International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE) is launching its first Webinar of the year on February 2. This upcoming webinar on Cone Penetration Testing will be given by CGS Member Prof. Peter Robertson (from Gregg Drilling - California USA). All ISSMGE webinars are offered free of charge in an effort to assist geotechnical engineers worldwide and to promote our profession. You are welcome to attend and highly encouraged to invite all geotechnical & civil [...]