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Groove or Fillet

Groove or Fillet

Groove or Fillet

(OP)
I'm designing a bracket to tie to LVLs together (really low reaction <1000lbs).  The bracket will be 2 1/4" steel plates w/ bolt holes & welded together to make a 135* angle.  I rarely specify welds so need a little advise...groove or fillet?   

RE: Groove or Fillet

Will this bracket see cyclic loading conditions in service? Also, can you provide a sketch, this would be helpful.

RE: Groove or Fillet

As I understand your description you have two 1/4" plates at 135* on the obtuse side and 45* on the acute.  A skewed "T" joint.

The angle is too large to bevel the plate for a fillet on both sides.  At 45* a groove weld TC-U4b can be made with no prep to the plate.  Care should be taken when they backguoge the weld, or they can use a backing bar (TC-U4a).

http://www.FerrellEngineering.com

RE: Groove or Fillet

"Weld is at the joint."  Are you making the corner connection by welding two plates at the required angle?  Two plates "butted" at a corner must be groove welded, there is no surface for a fillet weld.  

For a 1/4" plate, simply bend the plate, without welding.  Is this carbon steel (A36)?  Or stainless?  Bending should be the easiest solution.

I should have asked about the material earlier.  If it is aluminum, welding will reduce the shear and bending capacity.

http://www.FerrellEngineering.com

RE: Groove or Fillet

I like the bent plate option.

Best regards - Al  

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