Hi, I have a timber post and beam structure with steel braces (tension only) in both X and Y directions. There is also one wall as beam panel and one CLT wall. I need to perform a response spectrum analysis. I have already set up modal analysis where I deactivated steel braces in compression (half of them in both directions). Then I have set up a seismic load case, then a seismic design situation, everything as in webinars I found online.
Is it possible to create several load cases based on several modal analyses where different tension braces are deactivated based on direction, and then combine them in design situation? Would that make sense? I’m not sure how to properly consider tension braces in seismic design.
Another question is when I perform Timber Design I get a warning: lines will not be calculated for loading with envelope results. What does that mean?