Why is structural steel welding generally specified to be performed in a qualified structural steel fabrication plant?
• A. The requirements for welding of structural steel are specified in Specification Article 2408.13 and Materials I.M. 558 (558 Apendix A and 558 Appendix B). When possible, all welding of structural steel is to be performed in a qualified structural steel fabrication plant that has an established and approved Welding Procedure Specification (WPS). The welding of structural steel involves a very controlled process that is more easily achieved in the control setting of a fabrication shop. Although quality welding of structural steel can be achieved in a field setting it is much more difficult and as such is not generally permitted. That is why designs involving structural steel assembly in the field have bolted rather than welded connections. There have been instances in the past where contractors have requested the use of temporary welds on structural steel. Specification Article 2412.03 states that temporary welds will not be authorized.. and there are few exceptions. Any considerati
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