TIEBACK WALL: New Construction Commercial Building
Tieback wall for deep foundation of new Dartmouth College MacLean Engineering Sciences Center.
Dartmouth College is expanding its engineering and computer science education facilities with the construction of the MacLean Engineering Sciences Center. The unique geology of the site created challenges for the six story deep foundation. Built on the shore of the Connecticut River, sand composes the majority of the soils. Hitchcock Lake receded 12,000 years ago, leaving the Connecticut River Valley and very deep sand.
The conditions were perfect for using CHANCE SS200 and SS225 anchors to tie back the deep retaining wall.” Over 860 square shaft anchors were used to varying depths of 20 to 70 feet.
The engineers choose helical tiebacks over other systems because of the immediate loading and testing capabilities unique to helical anchors: no grout makes installation faster, less labor, more economical, easier to install in winter months.
The tiebacks tested to 108 kips and the project took approximately three months to complete. The majority of the six stories below grade will be used as a parking garage for the cutting-edge science facility.
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Clarksburg, NJ 08510
CHANCE® Civil Construction is a division of Hubbell Power Systems, Inc., the international leader in earth anchoring. CHANCE and ATLAS® brands are used worldwide in a variety of deep foundation applications.
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