Welding aluminum for base of guardrail post
Welding aluminum for base of guardrail post
(OP)
When welding a circular pipe to a flat plate (both 6063-T6), how far from the weld does the material get back to its original strength? Thanks!
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
Download nowINTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Welding aluminum for base of guardrail post
|
RE: Welding aluminum for base of guardrail post
The base metal regions subjected to high temperatures is over aged, allowing some of the alloying elements to precipitate to the grain boundaries which results in a loss of strength and ductility.
Best regards - Al
RE: Welding aluminum for base of guardrail post
RE: Welding aluminum for base of guardrail post
RE: Welding aluminum for base of guardrail post
So in your case, 1" up the tube and 1" out in all directions on the plate.
As gtaw notes, there are lots of variables if you want to determine the actual weld effects...what I gave you is the code requirement for design.
I've designed over 700 aluminum structures and one of the biggest challenges I have is dealing with welded joints and the heat affected zone.
If by chance your application is a tubular post for a handrail or guardrail, you probably need to come up with an alternate design.
RE: Welding aluminum for base of guardrail post
It's hard to get those to work without using gussets at the plate connection, and most architects don't like the way gussets look.
RE: Welding aluminum for base of guardrail post
RE: Welding aluminum for base of guardrail post
A lot of our work in this area are schools, and we are convinced some architects are hooked on the look of powder-coated aluminum and figure it will never rust, so it must be the best for a harsh outdoor environment at a school. I am sure they have no idea how much more cost they may be adding for us to get their designs to work, when a galvanized or painted steel handrail assembly would have worked brilliantly. I also worry about fatigue from dynamic loading with aluminum at schools...
RE: Welding aluminum for base of guardrail post
RE: Welding aluminum for base of guardrail post
We'll probably end up putting some holes in the concrete and securing the posts with grout (with a PVC pipe or bituminous paint barrier). I think your theory about architects who are predisposed to using aluminum without considering all the angles (p.i.) is true, a2mfk.