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]
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ADSC 2008 Faculty Workshop Wrapup
Robert Thompson of Dan Brown and Associates has posted a wrapup of the 2008 ADSC Faculty Workshop. They had 20 Civil Engineering faculty attend the event. The field demonstration day was hosted by DBA at the Trial’s Training Center in Sequatchie, Tennessee. Apparently that site is Dan’s hobby. Read more about the workshop itself and also read Robert’s post about the field demonstration day including photos. In the photo at right (Robert Thompson, DBA) you can see the Statnamic test setup for a drilled shaft. A little more about the event:
Long Foundation and Hayward Baker have installed examples of several foundation and retaining structures, including drilled shafts, micropiles, and soil nails. During the field day demonstrations, the attendees will observe additional installations, load tests, and non-destructive testing.
Nicholson Acquires Terra Drilling
Pittsburgh, PA: Nicholson Construction Company has acquired the capital stock of Terra Drilling Company Inc., a geotechnical contractor headquartered in Hudson, MA.
The acquisition strengthens Nicholson’s position in the New England market, where Terra Drilling has completed hundreds of piling, earth retention, and grouting projects since it was founded in 1984. [Editor] Click through for the rest of the press release. [/Editor]
Thomas J. Tuozzolo, P.E. joins the Board of ADSC
[Editor] Moretrench [/Editor] Vice President Thomas J. Tuozzolo was elected to the Board of the International Association of Foundation Drilling (ASDC) at the IFCEE Conference held in March, 2009. Mr. Tuozzolo, who has overall responsibility […]