AISC PARAMETER BHETA FOR SEISMIC DESIGNhttps://communities.bentley.com/products/ram-staad/f/ram-staad-forum/191388/aisc-parameter-bheta-for-seismic-designHi, I have a doubt in STAADP.ro CE about how can I implement the factor Bheta 1 and Bheta 2 in Steel Design (Appendix 8 AISC 360-16). I know that it possible to perform P-Delta Analysis, but for seismic design with modal analysis/response spectra, Ien-USTelligent Community 12RE: AISC PARAMETER BHETA FOR SEISMIC DESIGNhttps://communities.bentley.com/thread/565268?ContentTypeID=1Tue, 21 Jan 2020 14:12:39 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:cbc7d2c5-6d88-4f93-876c-e0b3ee93960fEdwardVC<p>Thanks, for your answer</p><div style="clear:both;"></div>RE: AISC PARAMETER BHETA FOR SEISMIC DESIGNhttps://communities.bentley.com/thread/565151?ContentTypeID=1Tue, 21 Jan 2020 00:44:42 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:2d0d44ff-9483-4844-a21c-a9048a55eb80Sye<p>The approximate second order analysis method of Appendix 8 is not implemented in STAAD.Pro and so&nbsp;if you would like to use the beta 1 and beta 2 factors, then these would have to be manually calculated and&nbsp;applied to the results from a first order analysis.</p><div style="clear:both;"></div>