Publications / 1994 Proceedings of the 11th ISARC, Brighton, United Kingdom

Rebar Computer Aided Design and Manufacturing

R. Navon, Y. Rubinovitz, M. Coffler
Pages 155-162 (1994 Proceedings of the 11th ISARC, Brighton, United Kingdom, ISBN 9780444820440, ISSN 2413-5844)
Abstract:

Reinforcement manufacturing received very little attention from the research community (Bernold 1991). Until a few decades ago, the manufacturing of Reinforcement bars was done on site. This process was labor-intensive and consequently expensive. As the construction industry started to move towards more industrialized methods, the reinforcement manufacturing also began to adopt more Industrialized methods. The first step was to move the manufacturing process off-site to specialized manufacturing plants, which supplied the reinforcement bars according to Purchasing orders. In the 1950s and 1960s attention was given to the production of controlled (nc) rebar bending machines started to appear (kehl 1991). These machines straighten the steel, which is supplied to them in coils and bend and cut them. The operation of the machine is numerically controlled by a computer (cnc), which determines the exact bending and cutting locations. The data is Programmed by the operator beforehand according to details in the shop drawings, which are normally prepared earlier at the fabricator’s main office. The justification for such machines is primarily economic and is also influenced by the fact that it becomes constantly harder to recruit qualified workers, there is an increasing need for just-in-time supply and higher accuracy is required (deichmann 1991).

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