Welding Finished Steel

[StructuralEngGuy]

Hi all,

I'm currently working on a project that will have a trellis on the exterior. This trellis will be exposed steel HSS tubes. The trellis itself will be delivered in components and assembled in the field. The architect wishes to have all connections welded rather than bolted. Now, assuming that the steel will be finished in the shop, do I need to be concerned with the effects of the finishes (galvanizing, painting, etc.) on the field welding? Additionally, what is the best way to finish the steel to protect it against heat, moisture, etc. that it will always be exposed to?

Thanks

 

[hogan666]

There are two main options with this issue when working to AWS. First remove the coating to allow for welding. Second is to qualify a procedure to weld with coating in place.