Welding on the fillet of a beam web?
Welding on the fillet of a beam web?
(OP)
Is there any problem with welding on/near the fillet of a beam web (e.g. welding 3 sides of a web shear plate with height "T")??
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Welding on the fillet of a beam web?
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RE: Welding on the fillet of a beam web?
BA
RE: Welding on the fillet of a beam web?
RE: Welding on the fillet of a beam web?
Dik
RE: Welding on the fillet of a beam web?
www.FerrellEngineering.com
Providing fabrication and erection efficient structural design of connections. Consulting services for structural welding and bolting.
RE: Welding on the fillet of a beam web?
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Welding on the fillet of a beam web?
I quickly went through my desk in hopes of providing a more detailed response, but to no avail. I will have to dig into the filing cabinet.
RE: Welding on the fillet of a beam web?
Cracking has been reported in the k-area (web/flange juncture) of rotary straightened wide flange shapes (AISC 1997). Most of the cracks occurred at highly restrained joints (like at column doubler plates) indicating that weld shrinkage stresses contributed to the cracking. Rotary straitening involves cold working of the k-area resulting in a reduction in toughness and ductility. Larger sections are currently straightened by other means that do not result in as much loss of toughness in the k-area. FEMA 350 (2000) recommends that it is prudent to assume that all rolled sections are rotary straightened.
In some cases CVN toughness was below 5 ft-lb absorbed energy at +70 degrees F and the ductility was less than half that in the other parts of the cross section. (Tide 1977).
To avoid k-area welds the manual recommends larger columns, corner clips, fillet welds rather than groove welds for doubler plates, increase preheat and minimize weld volume, and consider magnetic particle or dye penetrant inspection for welds near the k-area in highly restrained connections.
...more than anyone wanted I'm sure.