Correct design and detailing of X bracing in the middle Brace-to-Brace connection? (one story, so not beam there) 1

[X4vier]

Is there any AISC document with the correct design and detailing for one story X brace for Special Concentrically Braced Frames (SCBF)
I can see the example in the seismic design manual for the two-story X-bracing with the beam in the middle, but there is no reference to the one-story X-brace.
Thanks

 

[HTURKAK]

There are some worked examples at the following doc. for multi storeys . You can adopt to one storey .

 

[X4vier]

The examples in this document are for two-story X bracing.
I'm looking for the design for X bracing with bracing crossing each other between the floors.

 

[human909]

Then you would lose the "Special" in SCBF.

I'd suggest you look at an eccentrically braced system or a moment frame.

 

[Compositepro]

Isn't this type of bracing "tension only", and a connection at the crossing point is unnecessary, or only to prevent slapping?

 

[HDStructural]

They can still be designed as tension or compression if you detail/design it properly.

 

[CDLD]

What exactly is your question? Is it in regards to the effective length of the compressive member in the X-bracing?

You can still maintain concentrically braced with double angles.

 

[Deker]

X-bracing that resists tension and compression is permitted in SCBFs. If you can track down the 2000 IBC SEAOC Seismic Design Manual, there is an x-braced frame example in Volume III. However, I'd recommend using a chevron configuration if you can. It's generally much more economical than x-bracing because you have 3 connections per bay rather than 5. If designing to AISC 341-22, the chevron beam would also be a little lighter than in previous versions of AISC 341.

Also see my comments in this thread: https://www.eng-tips.com/threads/scbf-intersection-of-bracing.430632/