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Composite Joist Vibrations

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epitome1170

Structural
Joined
Feb 28, 2011
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Does anyone have any design guides or literature on vibrations of a composite joist system (on bearing walls)?

All of my vibration literature covers composite beams and non-composite beams/joists, but nothing seems to cover this type of system.
 
Design Guide 11 from the AISC and CISC uses a deflection criteria to find the floor systems natural frequencies (joist/beams, girders and combined)

I would assume that the wall (your girder) does not delfect therefore you only have to worry about the composite joist's properties.

hope this helps
 
Non-composite joists are treated as "composite" when it comes to determining I for vibration calculations in AISC Design Guide #11, so I would just follow along with that and ignore the studs to start and see where that gets you.
 
I seem to remember SJI had a program for a couple hundred bucks for vibration, pretty old and basic DOS type thing. Been a long time since I designed a joist floor...
 
Also, read Design Guide 11 Sections 3.2 and 3.6.
 
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