The rich, earthy beauty of Weathering Steel is being seen more and more often in unpainted applications for bridges, utility poles and structures, sign structures and highway guard rails.

Engineers have become increasingly interested in the aesthetic values of this weathered and textured material left exposed for its own beauty. More importantly, the practical values of exposed, unpainted Weathering Steel are numerous as well. The purpose of this booklet is to give owners, designers, structural engineers, bridge engineers, and contractors helpful information about Weathering Steel-its use, handling, fabrication, availability, properties, and specifications.