Natural frequency of buildings

[elogesh]

Hai,

Can any body tell me the usual values of first natural frequency of single storyed buildings which has only two rooms with construction under proper standards?

With Regards,
logesh

 

[shamong]

hi!
Maybe, Anyone can't do it for you.
First, if you want to find the usual value of first natural frequency of the building, you have to tell us about a rough width, a rough length and a rough height.
I think so....

P.S. I'm sorry that I write in poor English.

 

[CHH]

May be not more than 10HZ.

 

chh its surprising to hear that the natural frequency would be only 10Hz. Please give some proof for your above statement.

 

[nikolas]

its really surprising that the natural frequency of the building would be only 10 Hz.
Any comments friends to solve this query.

 

[Hatch]

I have measured several buildings and measured natural frequencies (first mode) in the range of 2 Hertz to 14 Hertz. Yes most buildings have natural frequencies below 10 Hertz. By buildings I mean fairly large structures in the order of 3000 metric tons and above. Smaller objects and lighter structures are anywhere above 100 Hertz. C. Hugh (

http://www.Hatch.ca)

 

[krishna72]

hi,

to support Hatch and Chh:

earthquakes are low frequency vibrations (in the range of 5-10Hz). buildings collapse when resonance occurs during earthquake. hence one can very well assume that building natural frequency is around 10.

krishna