Steel bridge poor fabrication practice
Steel bridge poor fabrication practice
(OP)
Dear All,
I've the following problem,
the contractor fabricated the steel I-girders of a bridge , in which the shop-flange welded splice happened to lie in the bolted splice. that is between the bolts
is there any specs that prohibits such incident
Refer attached drawing
thanks in advance
I've the following problem,
the contractor fabricated the steel I-girders of a bridge , in which the shop-flange welded splice happened to lie in the bolted splice. that is between the bolts
is there any specs that prohibits such incident
Refer attached drawing
thanks in advance






RE: Steel bridge poor fabrication practice
Is the weld a butt joint between two plates making up the lower flange or is the weld a T-joint between the web and the lower flange?
Best regards - Al
RE: Steel bridge poor fabrication practice
it is a butt weld between two plates making up the lower flange
Regards
RE: Steel bridge poor fabrication practice
Best regards - Al
RE: Steel bridge poor fabrication practice
RE: Steel bridge poor fabrication practice
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RE: Steel bridge poor fabrication practice
I am the consultant, the one who will approve or disapprove the detail. unfortunately, this situation happened because of problems in the work-shop drawings accompanied by site conditions that required increasing the length of the girder leading to this situation.
the problem is a state of fact and I have to deal with it.
thought it is safe , strength and fatigue wise, I am wondering any specs that prohibit it
Thank you all for your responds
RE: Steel bridge poor fabrication practice
RE: Steel bridge poor fabrication practice
RE: Steel bridge poor fabrication practice
In AISC I think this type of detail would throw you up into a C or C' category. Not sure of AASHTO fatigue issues.
With the weld directly near the splice plate bolt holes I think you have even more of a problem but I can't point to the actual AASHTO section that would discuss this.
One thing you might do is talk to your local (or really any other) government transportation bridge department to see what their policies on this.
Butt welds on flanges doesn't sound right either - are you sure it wasn't a complete penetration groove weld?
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RE: Steel bridge poor fabrication practice
and all
what I mean by butt weld is complete joint penetration (at least this is its common name in our country)
For the lengthening of the girder, this what has happened:
the girder length was 30meters, the required length is 30.8 meters
they cut the girder to two parts one 18meters and other 12 meters
in 12 meters they cut 4meters and added 4.8 meters complete joint penetration welding. now the part length is 12.8 meters
they joined 12.8 to 18 with bolted splice which unfortunately happened to have a CJP butt weld in the 18 part as described above
regards
and thanks for your response