Eg. I consider the below building, beams and columns size are 300x300mm. In addition 2kn/m2 floor load is considered on all floors.
Using "Print Dia CR" command , staad is showing the below result
How the rigidity is changing on each floor as the beams,column & loads applied is same?
What are the parameters considered for calculating stiffness?Usually if we are doing manually, stiffness of column alone will be used for calculating the stiffness/rigidity on each floors.
Please explain how the above calculation has been made.
(Above Example is taken from STAAD.Pro CE – Seismic Analysis Using IS 1893 (Part 1):2016 problem statement 10.1)
Please see the attached pdf taken from help file. Hope this helps.
PDF
Hi Abhisek
Thanks for your reply.The pdf which you shared is different from my query.That is regarding soft storey check as highlighted below.But my concern is finding the centre of rigidity of floor.
This is the storey stiffness for my model.
Both the parameters(screenshots/results) are different & i have no idea on how both these are calculated.
If possible anyone can help with small examples.
Thanks in Advance.
anyone can help?
Please refer to the following wiki for computation of CR-
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/29030/computation-of-center-of-rigidity-cr
I need to have the model attached here to check it.
8054.SEISMIC EG-10.1 MANUAL TORSION.STD