How do I calculate the natural frequency of the floor?


  
 Applies To 
  
 Product(s):STAAD.Pro
 Version(s):All
 Environment: N/A
 Area: Analysis Solutions
 Subarea: Eigen Solution
 Original Author:Bentley Technical Support Group
  

I have modeled a floor grid in STAADPRO. How do I calculate the natural frequency of the floor?

The best method to use to obtain frequencies of a model is the eigenvalue method. An elaborate explanation on using this method is available at the following link :


An approximate but quicker method is the Rayleigh method. More details on that method is available here