Nicholson Construction built a cutter soil mixed (CSM) retaining wall for an unusual application at the Hill Air Force Base in Ogden, Utah. A 50-ft diameter by 50-ft deep shaft was constructed using CSM as temporary shoring to construct a turntable and pylons to allow an F-22 Raptor and other stealth aircraft to be raised to a height of 20 feet to allow radar testing of low observable coatings (stealth paint). The CSM shoring was also used for a portion of access tunnel for the shaft and pylons. The CSM panels were overlapped to create a water-tight seal and prevent seepage and eliminate the need for dewatering, a tricky and expensive proposition with the contaminated ground present at the site. Read more about the project at the link below. [Source: Nicholson Construction. Image: Nicholson Construction]
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Howard A. Hanson Dam, built in 1962, is an earth embankment dam. The dam embankment is 235 feet high and 675 feet long. The composition of the right abutment foundation is partially bedrock and unconsolidated alluvial and landslide material. The right abutment has leaked since the dam became operational. A leak in January 2009 filled the reservoir higher than ever, prompting the U.S. Army Corps of Engineers (USACE) to reclassify Hanson Dam as “unsafe” with an “urgent and compelling” need for immediate action.
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Nicholson Awarded Extensive Shoring and Underpinning Contract at Children’s Hospital of Richmond at VCU
PITTSBURGH, PA – February 5, 2013 – Nicholson Construction was recently awarded the geotechnical work for the new Children’s Pavilion at Children’s Hospital of Richmond at the Virginia Commonwealth University (VCU) by Skanska Building, USA.
The $168 million, 640,000 square-foot facility will house 72 exam rooms, a surgical area with two operating rooms, and two procedure rooms, areas for diagnostic testing, imaging and laboratory services. Construction also includes an attached parking garage with more than 600 spaces.
The new Children’s Pavilion will make Children’s Hospital of Richmond the largest and most advanced outpatient facility dedicated to children in the region.
[Editor] Read the rest of the press release from GeoPrac.net sponsor Nicholson Construction. [/Editor]