Fabrication details 1

[Leftwow]

Good morning ladies and gents,

We have an issue that requires us to check some steel connection fabrication details, we are having a hard time finding literature that can give us insight on connection detailing. We are currently working hard on this, any insight on this would be greatly appreciated. Steel was fabricated without shop drawings, now the contractor is calling us with hourly workers on site trying to build with no bolt holes, and asking us if they can just "go ahead and weld it".

 

[BAretired]

Maybe the contractor should stop the work until he has approved shop drawings.

BA

 

[mk3223]

It can't be right to fabricate something without a shop drawing. It sounds the work needs to go back to drafting board starting with a shop drawing. Maybe hire a contractor or have the fabricator to prepare the shop drawings.

 

[dik]

There should be some drawings that show connections...

I remember talking to the EOR for the Precious Blood Catholic Church... when the shop drawings arrived, it was far too complex for the contractor to check the glulam drawings (this was at a time before CAD became common). He ordered a bunch of glulam timbers to be delivered to site, so that they could be fitted on site.

During construction of the glulam framing he would run to the construction trailer and lift the roof off the model, look at the framing for the model, and then cut the glulams to size on site.

I've attached a picture of the church roof.

Dik

 

[SlideRuleEra]

I don't know about the current "AISC Manual of Steel Construction", but the older editions (9th Edition and 6th Edition, for sure) have the entire "Part 4" dedicated to connections. This section is where detailers often retrieved the information they needed.

The older manuals, 1st through 7th edition, are available for free download by AISC members on the Historic Steel Construction Manuals webpage.

http://www.SlideRuleEra.net

http://www.VacuumTubeEra.net

 

[gtaw]

The AISC Steel Construction Manual is a good start, but AWS D1.1 Structural Welding Code should be part of the process as well. The prequalified details in Clause 3 are tried and true. They work. Should the fabricator depart too far from the practices recommended by AWS D1.1, there will most likely be problems.

Best regards - Al

 

[Leftwow]

Thanks all, we found the "structural detailing Manual by AISC".

 

[Nor Cal SE]

Good feedback from all, but I think this is also worth noting: presuming the origin of this story is that you've created approved-for-construction drawings, stamped and signed by a licensed civil or structural engineer, then your drawings are "sovereign" until you've specifically given approval for any change. Neither the steel fabricator nor the general contractor nor anyone else on site would have the authority to change any of your details without your written consent.

 

[dik]

Good point Nor Cal SE... I hadn't considered that to be part of the problem.

Dik

 

[JLNJ]

What country is this in?

The least of your worries may be whether or not the clip angle connections are bolted or field welded.