Groove or Fillet

[jonathanwilkins]

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?

 

[metengr]

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

 

[connectegr]

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

 

[jonathanwilkins]

Thanks for the help - attached is the start of the drawing...there will be 2 lvls...the one cantilevering 3'-6" is supporting the short LVL. Weld is at the joint.

 

[connectegr]

"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

 

[gtaw]

I like the bent plate option.

Best regards - Al