How to check welds?

[Fotzio]

Can someone help me with ideas how to check these welds on connection of two welded profiles. One profile is under continous load.
Details of connection are on this picture:

http://img45.imagevenue.com/img.php?image=80849_drawing_122_360lo.jpg

Thanks for any help!

 

[gtaw]

The flange to flange welds can be made using permanent backing (left in place) is the loads are not cyclic. The AWS D1.1 structural welding code has a number of groove details to select from. A standard bevel groove of 45 degrees with a 1/4 inch root opening and 1/4 (or 3/8) inch thick by 1 inch wide backing bar should do the trick. The web (only) can be welded, as you indicate, with double fillet welds. I would not recommend welding the beam web to the underside of the header's flanges.

The groove welds can be checked using ultrasonics and the fillet welds can be checked with magnetic particle.

Best regards - Al

 

[Fotzio]

Thank you gtaw for reply. I forgot to write that I just need to do statics check on these welds to make sure that they will bear required continous load. It wolud be helpfull if someone know any book describing how to do statics check of such and other similar welded joints. Thanks!

 

[MikeHalloran]

They sell the books at engineering schools, along with instruction in how to use them. You will need both. It will take some time, and cost some money.

It would be cheaper to rent an engineer for a while.



Mike Halloran
Pembroke Pines, FL, USA

 

[Fotzio]

I know the basics of weld calculation but I am not sure how to check welds marked as double fillet weld with (4 mm). I know moment and shear force in that section. I thought to check middle weld with combination of moment and shear force, and lower and upper weld with combination of same moment and shear force that I will get if that moment divide by distance between two welds. Would that be the right way?