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Quick Question

Quick Question

Quick Question

(OP)
I apologize for the elementary question, but the prequalified welds in the AISC manual develop the full capacity of the controlling member they are connecting correct?

RE: Quick Question

No, I'm afraid not.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

RE: Quick Question

(OP)
So then what does it mean to the engineer that a weld is prequalified? If you must still check the weld for its capacity and soundness?

RE: Quick Question

KootK, I am surprised by your short response! :p

steelnstuff: welcome to EngTips! - developing the full capacity of the connecting member can be achieved many different ways depending on the joint geometry, loading, welding procedure, filler/base strength ratio, etc. etc. But, you have to specify the right weld joint to get that capacity.

Prequalified Complete Joint Penetration welds (CJP), if specified properly, will allow the connecting members' strengths to control. But, they should be used sparingly, as they are very material and labor expensive.

Depending on the joint geometry and loading, it is possible to develop member full capacity by providing different combinations of welds (that are not CJP), based on the sum of their effective weld areas (used to be called weld throats).

Maybe you could give some more information about your particular joint?

"It is imperative Cunth doesn't get his hands on those codes."

RE: Quick Question

I kept it short because I'm not sure that I'm the best responder for the backstory on this one. There are several excellent materials guys on this forum that will hopeful jump in.

This FAQ provides the basics:Link

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

RE: Quick Question

(OP)
Thanks for the responses, I'm just now going into my first steel design class and wanted to get ahead of the game a little. I believe I need to do a little more research on my own though, I'm pretty in the dark on the topic of weld design.

RE: Quick Question

Ah..a student. That makes more sense. Just as an FYI: Link

Good luck

"It is imperative Cunth doesn't get his hands on those codes."

RE: Quick Question

Link. Good start and free.

Link. Better start and reasonable.

Link. Black belt and only $15 from Lincoln Electric. Read this after you graduate but definitely read it. If you don't, you'll spend the rest of your career getting engi-spanked by other engineers that have.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

RE: Quick Question

(OP)
Sweet! With a selling point like that I'll go for the black belt version, thanks so much!

RE: Quick Question

MacGruber22.  I thought KootK's initial reply was perfect for a thread headed "Quick Question".

RE: Quick Question

Yeah, in retrospect it was!

"It is imperative Cunth doesn't get his hands on those codes."

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