PICARDI E. Alfred Picardi, the structural engineer for Chicago’s 1,136-ft-tall Aon Center, died on Aug. 14 in Virginia Beach, Va. He was 88. Picardi eventually became chief engineer at Chicago’s Skidmore, Owings & Merrill, where he had a hand in designing the city’s 1,128-ft-tall John Hancock Center. He left the firm in 1967 and went to Perkins & Will, where he designed Aon, the world’s fourth-tallest building when completed in 1973. Picardi developed a way to use the tubular structure’s V-shaped exterior columns as a container for its mechanical systems and adapted the oil firm’s cost and risk simulations to
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.