Damaged steel girder
Damaged steel girder
(OP)
I have a W27x84 steel girder that supports steel roof joists. The girder is stressed to 80 percent allowable. The girder was hit by equipment and bottom flange is deflected laterally about an inch. How do I repair this girder?






RE: Damaged steel girder
You may not have to do much of anything in the tension case. Perhaps add some lateral brace angles to ensure that its stable.
Heating to straighten, under load, is not probably a wise choice. You can add additional shapes, such as a tube, or double angles, along the bottom flange, lapping past the distortion and tying into the beam in the straight flange areas on either side of the bend.
RE: Damaged steel girder
how strong is the plastically deformed section ?
me, I'd replace the flange with a Tee ... brace up the beam, cut out the offending flange, splice in the replacement flange (Tee).
RE: Damaged steel girder
RE: Damaged steel girder
Hg
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RE: Damaged steel girder
Dik
RE: Damaged steel girder
The bottom flange moved about 1 inch.
Web was dragged locally with flange.
Deosn't appear to flange rotation or twist.
Damage is about four feet long.
I think I will weld a 3/4" thick plate by 10 feet long to bottom flange
RE: Damaged steel girder