The single-storey library building consists of a lofty wedge-shaped public library area encompassed on three sides by cellular office accommodation. The long east wall of the library area is fully ...

Using 80-ksi steel in upper perimeter columns—a first in the U.S.—helped the design team reduce the steel by almost 20% at 320 S. Canal, a 51-floor office tower under construction in Chicago’s Loop.

Many renovated buildings replace wood and masonry structural elements with steel. The replacement of heavy wooden roof and floor joists with the lighter steel open-web bar-truss joists is a common ...