During a nine-course meal at a Chinese restaurant in New York City on July 10, Wang Da Sui, design master of China and part of a panel of experts approving the structural scheme for the 632-meter-tall Shanghai Tower, confirmed that the innovative architecture of the twisted and tapering skyscraper—sheathed in sheer glass like a Baccarat crystal—is a guinea pig for crafting China’s first supertall-building code. The code, for structures 300 m and taller with “serious irregularity,” requires performance-based design and extra-stiff frames and puts strict limits on building acceleration. Wang, who also heads the code committee, said the code will
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.