Aluminum column base plates
Aluminum column base plates
(OP)
Hi
I need to design an aluminum structure with 14" square tube columns bearing on concrete piers. I am not too familiar with the design of aluminum and am looking for references on the design of base plates. The aluminum design manual has nothing for base plates that I can find. I am proceeding on the basis of similiar behaviour to steel base plates. Plus I will add vertical stiffeners to help things out a bit. I need a rigid connection at the base.
Also, what would you use for anchor rods? I need 8-1" diameter rods using A36 steel. I guess I could call for the A36 rods and hardware to all be hot dipped. Would I be better using stainless, if so, anyone know the allowable tension stress for 316 stainless?
Thanks
I need to design an aluminum structure with 14" square tube columns bearing on concrete piers. I am not too familiar with the design of aluminum and am looking for references on the design of base plates. The aluminum design manual has nothing for base plates that I can find. I am proceeding on the basis of similiar behaviour to steel base plates. Plus I will add vertical stiffeners to help things out a bit. I need a rigid connection at the base.
Also, what would you use for anchor rods? I need 8-1" diameter rods using A36 steel. I guess I could call for the A36 rods and hardware to all be hot dipped. Would I be better using stainless, if so, anyone know the allowable tension stress for 316 stainless?
Thanks






RE: Aluminum column base plates
http://www.askzn.co.za/tech/tech_grade_316.htm
http://www.imp.mtu.edu/patents/castcon/castcon.316.html
http://www.assda.asn.au/316.html
UBC-94 has table 20-I-B for allowable shear stress in fillet welds for aluminum alloys.
RE: Aluminum column base plates
In order to proceed w/o altering your plans a great deal, I suggest that you let the concrete fully cure, with ample washing, then apply a penetrating sealant.
RE: Aluminum column base plates
Kenvlach: Ya, concrete and aluminum dont go too well together, thats for sure. I was planning on coating the aluminum with an epoxy or bitumous coating at any of the contact surfaces between the concrete and the aluminum. Or maybe even applying a thin sheet of plastic (Teflon or PVC or something like that) under the base plate to separate it from the grout bed. It has to be something that will separate the bottom of the base plate from the grout when the grout is poured under the plate.
RE: Aluminum column base plates
RE: Aluminum column base plates
RE: Aluminum column base plates
RE: Aluminum column base plates