I have never understood how we as fire fighters continue to be killed in buildings constructed of light-weight steel trusses. These units also referred to as bar joists are utilized in lieu of wood ...
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 ...
Using 80-ksi steel in upper perimeter columns—a first in the U.S.—helped the design team reduce the total steel by almost 20% for 320 S. Canal, a 51-floor office tower under construction in Chicago's ...