Lion06
Structural
- Nov 17, 2006
- 4,238
This question might come across as dumb, but......
When you're determining the natural frequency of a floor system you're supposed to use the natural frequency equation of something like 0.18*((g/delta)^0.5). My understanding is that this is true for something displaced by an amount delta and then suddenly released. Is this an accurate statement?
If so, why do you use the delta for the actual floor and not the delta imposed by the footfall? It seems the footfall is the only load causing a delta that is being removed. The delta caused by the DL of the floor is not being removed so how is it contributing to the natural frequency?
When you're determining the natural frequency of a floor system you're supposed to use the natural frequency equation of something like 0.18*((g/delta)^0.5). My understanding is that this is true for something displaced by an amount delta and then suddenly released. Is this an accurate statement?
If so, why do you use the delta for the actual floor and not the delta imposed by the footfall? It seems the footfall is the only load causing a delta that is being removed. The delta caused by the DL of the floor is not being removed so how is it contributing to the natural frequency?