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 ...
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