books.google.fr - Although the semirigidity concept was introduced many years ago, steel structures are usually designed by assuming that beam-to-column joints are either pinned or rigid. Theses assumptions allow a great simplification in structural analysis and design-but they neglect the true behavior of joints.The...https://books.google.fr/books/about/Structural_Steel_Semirigid_Connections.html?hl=fr&id=yTFOLdUaG9EC&utm_source=gb-gplus-shareStructural Steel Semirigid Connections
