Screw or weld steel deck
Screw or weld steel deck
(OP)
I was in a meeting the other day and mentioned that I would prefer to have the steel roof deck screwed instead of puddle welded. The EOR stated that he had poor experience with screwed decks and prefered welding.
Attached is an article which argues for screw attachment. What is the consensus out there?
Attached is an article which argues for screw attachment. What is the consensus out there?






RE: Screw or weld steel deck
www.SlideRuleEra.net![[idea] idea](https://www.tipmaster.com/images/idea.gif)
www.VacuumTubeEra.net
RE: Screw or weld steel deck
RE: Screw or weld steel deck
You have to be careful with the self tapping, self drilling screws with regard to the support thickness. An average flange (say 1/2 inch thick) might exceed the thickness that the screw can penetrate.
On the other hand, spot or puddle welds might not fuse to thicker flanges either without preheating.
RE: Screw or weld steel deck
RE: Screw or weld steel deck
RE: Screw or weld steel deck
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Screw or weld steel deck
Does anyone else use crimped sidelaps. Much faster than welding, no consumeables. It seems like a win-win to me.
RE: Screw or weld steel deck
RE: Screw or weld steel deck
If you inspect those welds in accordance with AWS requirements, many of them fail. I've personally inspected hundreds of thousands of square feet of decking, both welded and mechanically fastened with a variety of methods. If you hold the subcontractor to the requirements of AWS D1.3-Structural Welding Code-Sheet Steel, he will likely fail. First, most structural welders who have certification, are certified to AWS D1.1-Structural Welding Code-Steel. For welding sheet steel (e.g. decking), you must be qualified to AWS D1.3. That's not so bad if they only qualify to one thickness, but keep in mind that when installing decking, you can have up to four thicknesses to weld at once...ends of two sheet, lapped at sides in same location...happens all the time. That qualification condition is not easy, but most inspectors fail to ask for it...it is a code requirement in the US.
Pneumatic and powder actuated fasteners are a bit simpler. The inspection is also straightforward.
RE: Screw or weld steel deck
RE: Screw or weld steel deck