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looking for literature about deflection in non-standard beams (vierendeel, castellated beams, ...)

looking for literature about deflection in non-standard beams (vierendeel, castellated beams, ...)

looking for literature about deflection in non-standard beams (vierendeel, castellated beams, ...)

(OP)
As title says, I'm looking for literature that deals specifically with deflection in castellated beams). Although any partly related publication is also always welcome.

Not for a specific purpose, but more for personal education, as I've seen them used in public environments where my gut would say they're (way) too large for the loads they need to react. On the other hand I won't criticise the designers as I honestly haven't got a clue about them, hence this question.

http://www.fusionpoint.be
http://be.linkedin.com/in/fusionpoint

RE: looking for literature about deflection in non-standard beams (vierendeel, castellated beams, ...)

You could try the following publications:
- SCI P355 - Design of composite beams with large web openings LINK;
- LWO+ - Large web openings for service integration in composite floors LINK;
- Design of castellated beams for use with BS5950 and BS449;
- AISC DG 31 - Castellated and Cellular Beam Design (not much information here...).

RE: looking for literature about deflection in non-standard beams (vierendeel, castellated beams, ...)

Maybe it's over conservative but if it were me I'd be determining the moment of inertia using only the flanges and then calculate the deflection that way. In most wide flange beams of any real depth the Ad^2 value generates 90% of the stiffness.

Edit: that would be my method for Castellated beams, not other types. I have confidence that Castellated beams are going to have the flanges act compositely.

RE: looking for literature about deflection in non-standard beams (vierendeel, castellated beams, ...)

Here's a brief freebie covering the basics, sans deflection: Link. Blodgett covers castellated beams well as mentioned in the article. Although I'd have to think some of the more modern references would be moe suitable for design. The big issue with respect to deflection is the introduction of meaningful shear/vierendeel deflection for beams where a substantial portion of the web has been removed.

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: looking for literature about deflection in non-standard beams (vierendeel, castellated beams, ...)

(OP)
@ avscorreia, thx, I have some reading to do now... seems like great references.

@ jayrod12, I've used this method for a rough approximation, but these "napkin" calcs don't coincide with reality in the other way ( => actual beams are bigger than this conservative approach).

http://www.fusionpoint.be
http://be.linkedin.com/in/fusionpoint

EDIT:
@ KootK, we must've been typing at the same moment, so I didn't see your reply before. Thx as well. I've got the Blodgett books (my profession is welding engineering, so how could I not have those), will check them to see if what I'm looking for is mentioned there.

RE: looking for literature about deflection in non-standard beams (vierendeel, castellated beams, ...)

So you're saying the deflection you've encountered is greater than the napkin calc? Hm... seems odd.

If not, then I think I'd still be comfortable going that route, there's no need to take everything to 99%.

RE: looking for literature about deflection in non-standard beams (vierendeel, castellated beams, ...)

You're welcome. I'm not much of an engineer but I can be a great librarian...

RE: looking for literature about deflection in non-standard beams (vierendeel, castellated beams, ...)

search in web site of Arcelor Mittal : you will find two softwares (free download)

1 - ACBplus : round openings
2 - Angelina : sinusoidal openings

Furthermore the theory here attached

PS : if you are unsuccessful I will do it, attaching here in the next post

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