Full penetration weld verification
I agree with ml13, welding inside an existing office building presents lots of problems that you would not have with a bolted connection, particularly if the Owner wants to maintain operations in the building during the remodeling. The mechanisms that cause failure are complex and described in detail in specialist texts. Yes, the full-penetration weld qualify as full restoration of the original section properties. Lack of fusion is caused by the following conditions:. Ultrasonic Testing UT should not be specified for fillet welds.
Quality Assurance for Weld Inspection with Digital X-ray Systems and Portable X-ray Systems
The important factors for the steelwork contractor to consider when selecting a welding process are the ability to fulfill the design requirements and, from a productivity point of view, the deposition rate that can be achieved and the duty cycle or efficiency of the process. This symbol specifies complete joint penetration with no detail as to how the final condition is to be achieved. By jon Date You just state on the design drawings "All welding must conform to the latest applicable AWS code requirements". If the contractor shows a splice connection that you prove is ok during your review of the shop drawings then your job is DONE.
Testing Engineers - Case Studies
These common joints are made when two members with flat surfaces over lap each other. So, my response was, that if the drawing called for full pen, then they should have treated it like it was going to be UT'd or RT'd and no short cuts. For an E70XX electrode and an A36 beam, the allowable stress would be based upon the base metal only. The chosen method is presented on a welding procedure specification WPS , which details the information necessary to instruct and guide welders to assure repeatable performance for each joint configuration. Cracks or planar imperfections penetrating the surface are potentially the most serious. Once a welder demonstrates that they can consistently create a weld that meets performance specifications then they are certified to make that particular weld.
Typically the SCM denotes the nominal capacities of each as R n. BS EN  also tabulates minimum hold times prior to supplementary non-destructive testing based upon weld size, heat input and material grade. By this way of think ing, if a weld is to be inspected only by unaided visual methods and is deemed acceptable, it would be just as sound if examined by a subsurface NDE method such as UI. This is probably the most widely used process for welding bridge web-to-flange fillet welds and in-line butt welds in thick plate to make up flange and web lengths. The choice is usually made on the basis of cost for the completed weld.