Circular-Cell Cofferdam Saves Time, Cost and Concrete

摘要

If a storm surge threatens New Orleans from Lake Pontchartrain this hurricane season, a hefty, cellular-style cofferdam will reduce the risk of it pushing into the Inner Harbor Navigation Canal and flooding areas of the city. The interim structure designed by AJ-berici Constructors, St. Louis, Mo., will allow the contractor to build the permanent Seabrook Floodgate Complex in the dry. Two rows of circular-cell cofferdams now close the canal temporarily. Dry con- struction means "a higher-quality product as well as increased efficiency and safety," says Dave Calcaterra, Alberici project manager and vice president.