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Hey there, Quick backstory - I'm an SI Inspector working for a structural engineer and do not typically do any inspection on the welds themselves (usually just the steel framing and bolting). I am on a project where the W beam came up just short of the beam to column connection causing the bolt fit up to not fully align. The fix was to run a fillet weld on all three sides of the shear tab. All is good and the weld is performed, however on the opposite side of the beam web there are white shadowy marks all originating from the weld. Does anyone know what may have been the cause of this?I apologize if this is a simple question, but I have talked to other inspectors, a few engineers, and the site superintendent who have not seen this before. If it helps, the environment is right off the coast of salt water and is typically very humid.Thanks!
Reply:That's the surface treatment (gal or paint) being burnt by the heat of the weld. Needs to be wire brushed and the surface treatment restored. Paint if it's painted or melt zinc stick if it's gal.
Reply:Go figure something as simple as that...I really appreciate the help!
Reply:
Originally Posted by BrockG
Go figure something as simple as that...I really appreciate the help!
Reply:
Originally Posted by Woznme
That's the surface treatment (gal or paint) being burnt by the heat of the weld. Needs to be wire brushed and the surface treatment restored. Paint if it's painted or melt zinc stick if it's gal.
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Originally Posted by Freebirdwelds
Yeah that's nasty crap right there.
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Originally Posted by BrockG
Admittedly the nasty look is what piqued my interest lol. There is a similar condition at another beam to column connection 2 rooms over that looks nothing like this one.
Reply:Oh man my greenness is showing
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Originally Posted by Oldiron2
I agree that it looks like zinc oxide, which is somewhat surprising because the welds shown in the first picture don't look that large, particularly the lower one. How thick is the beam web? The welded side doesn't look like it was cleaned that well before welding, so I would have expected to have seen the oxide there, too. Maybe it was cleaned and retreated afterwards, but just on the one side? Did you ask the welder what his procedure had been?
Reply:
Originally Posted by BrockG
Oh man my greenness is showing
Reply:I aways took a can of touch-up paint and a wire brush to job for any marks like in photo. Dave
Originally Posted by BrockG
Hey there, Quick backstory - I'm an SI Inspector working for a structural engineer and do not typically do any inspection on the welds themselves (usually just the steel framing and bolting). I am on a project where the W beam came up just short of the beam to column connection causing the bolt fit up to not fully align. The fix was to run a fillet weld on all three sides of the shear tab. All is good and the weld is performed, however on the opposite side of the beam web there are white shadowy marks all originating from the weld. Does anyone know what may have been the cause of this?I apologize if this is a simple question, but I have talked to other inspectors, a few engineers, and the site superintendent who have not seen this before. If it helps, the environment is right off the coast of salt water and is typically very humid.Thanks!
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发表于 2022-7-21 15:52:00