rigid frame References rigid frame construction Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: construction/ Steel long-span constructionThe welded rigid frame became a new structural type for medium spans, reaching a length of 23 meters (77 feet) in the Cincinnati Union Terminal (1932), but widespread use of welding did not come until after 1945. Read MoreThe welded rigid frame became a new structural type for medium spans, reaching a length of 23 meters (77 feet) in the Cincinnati Union Terminal (1932), but widespread use of welding did not come until after 1945. Read More