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Lateral support of steel beam

Lateral support of steel beam

Lateral support of steel beam

(OP)
I am supporting two cross beams on top of a w shape underneath
I like to connect the bottom flange of cross beams to top flange of supporting beam below
The owner does not want to bolt and lose flange meat, I heard welding is not advised, what are other options?

Thank you

RE: Lateral support of steel beam

Sounds like neither you or the owner knows of what you speak. Bolting and welding are both advised, provided they are done correctly.

RE: Lateral support of steel beam

Options depend on many details about the service and loading, ƒ Strength and stiffness, Difficulty or ease of erection, environment, etc, etc.

For some applications gravity would be enough.
Probably not your application, but who can say, based on the info provided.

"...welding is not advised......"
There are a few welded connections shown here -
https://engineering.purdue.edu/~jliu/courses/CE470...

http://www.amsd.co.uk/images/services/large/SteelB...

RE: Lateral support of steel beam

Bolt holes likely do not affect strength (Fu vs Fy). I'd educate the owner on that and try to go in that direction. Welding to the flange could be a problem if it's a loaded beam in service. If it's all new build, you should be fine.

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: Lateral support of steel beam

If either member is fatigue sensitive, that might warrant some attention.

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: Lateral support of steel beam

(OP)
KootK (Structural),
Thank you for your comments.
Yes, the two cross beams are holding the roof and the new supporting beam will be replacement of the masonary wall that is going to be removed.

So if we install the new supporting beam and weld the cross beams to the cross beams while the wall is still carrying then the welding should be okay, am I right?

Can u please give me a reference or explain more about welding a new member to a member already under laod? are we not allowed to weld?


Thanks

RE: Lateral support of steel beam

Quote (StrP88)

So if we install the new supporting beam and weld the cross beams to the cross beams while the wall is still carrying then the welding should be okay, am I right?

Yeah, I would think so.

Quote (StrP88)

Can u please give me a reference or explain more about welding a new member to a member already under laod? are we not allowed to weld?

Check out the fourth page of this PDF: 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: Lateral support of steel beam

(OP)
KootK (Structural),

Thank you very much. Appreciate it.

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