Arturo Ressi di Cervia, one of the preeminent constructors of slurry walls in the world, died of cancer at age 72 in New York City on Aug. 23.Ressi worked on signature projects in many countries, but the most famous may be the Italian engineer's first job in the U.S.: construction of the slurry-wall perimeter of the World Trade Center basement."The quality of the work became evident on Sept. 11, 2001, when the walls were re-exposed after three decades. The walls withstood the Sept. 11 attack and helped prevent the Hudson River from flooding parts of lower Manhattan," says George J.
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.