Vibration Analysis
Vibration Analysis
(OP)
I am trying to analyze a floor slab for vibration. I have referred to the Steel Design Guide 11 (Floor Vibrations Due To Human Activity) however cannot find any solid information concerning a conventional reinforced two way slab.
Does anyone know of any places that I can refer to to find any information on how to analyze the situation.
Thanks.
Does anyone know of any places that I can refer to to find any information on how to analyze the situation.
Thanks.






RE: Vibration Analysis
RE: Vibration Analysis
RE: Vibration Analysis
RE: Vibration Analysis
DaveAtkins
RE: Vibration Analysis
RE: Vibration Analysis
Going the Big Inch!![[worm] worm](https://www.tipmaster.com/images/worm.gif)
http://virtualpipeline.spaces.msn.com
RE: Vibration Analysis
If there is a driving dynamic load, which can be either from mechanical plant (like pumps etc) or even human activity (people jumping at a concert) then this needs to be checked explicitly for that loading.
A key question is thus, what is the type of loading may cause excitation? (humans walking, humans dancing, plant equipment?)
In terms of how to analyse a UK Published guide by the Concrete Society on Post Tensionsed Slabs gives guidance on calculating acceptance criteria (accelerations) of slabs based on people walking briskly across a floor plate.
RE: Vibration Analysis
Dik
RE: Vibration Analysis
RE: Vibration Analysis
RE: Vibration Analysis
RE: Vibration Analysis
I agree with the posts above that end use of the building is the important criterion to be taken into consideration.
Thanks,
Pendyala
Thanks,
Lakshmi G Pendyala
RE: Vibration Analysis
I'll go for the key question, what natural frequency does the floor have?
This be analyzed (calculated) with handcalculation och computer and it's often very simple.
Regards
Thomas
RE: Vibration Analysis
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Vibration Analysis
If that post was directed to me, my idea was a simple square concrete slab and it's natural frequency. That would only require a "simple" formula. But I might have missunderstood the problem.
The reason for the question is that I couldn't find any real information in the tread reqarding the size of the slab and in my experience the natural frequency is a good starting point for any dynamic analysis.
Regards
Thomas