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Case Histories

Helical Pulldown® Micropiles


Dry Tortugas National Park

Accessible only by boat or seaplane, 70 miles west of Key West lies the remote Dry Tortugas National Park; a military fort built during the civil war which eventually housed a prison. Known as the home of magnificent Fort Jefferson; it is surrounded by water, vibrant coral reefs and protected marine / bird life.

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Waterscapes Condominium

An existing factory had been removed years earlier from this site. The varying fi ll surface soils were unsuitable for shallow footings and required deep foundations. Construction of new 12 story condominium on remediated soil adjacent to the Grand River.

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Richmond Train Station

Built in 1901, the historic train station is located in Downtown Richmond. The city is revitalizing their city center to attract new shops and foot traffic. The train station will provide passenger traffic, increasing the accessibility of the area. The train station had not been active for several years. It was in need of pile foundations to support new structural loads as well as the installation of an elevator, requiring earth retention. 

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YMCA Pool Foundation

The YMCA building and pool foundations were designed on CHANCE Helical Pulldown micropiles due to a layer of organic clay found approximately 25 ft. below grade. The project faced a tight production timeline with complex soil counts. The site had a soft layer of sand for the first 10-15 ft. and below that was approximately 20 ft. of extremely dense clay.

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