A general contractor is installing two 550-ton sector-gate leaves in a $1.3-billion barrier designed to reduce the risk of a hurricane’s storm surge on New Orleans’ exposed eastern side. The leaves will plug a big hole in the city’s armor for the 2011 hurricane season. Photo: Courtesy of USACE Ring wall shields two 550-ton sector-gate leaves when open and braces them against storm loads when closed. Massman Construction Co., Kansas City, Mo., is installing the two 75-ft-wide, 42-ft-tall sector-gate leaves to form an armored door for a 150-ft-wide navigable passage through the 1.8-mile-long, 26-ft-plus-elevation barrier, known as the Inner Harbor
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.