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By Ioannis Vayas, John Ermopoulos, George Ioannidis. Ioannis Vayas is professor and director of the Institute of Steel Structures at the National Technical University of Athens, Greece. Basis of design.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.