• time history analysis - mass participation with floor diaphragm

    When I specify a floor diaphragm in my time history analysis model, the mass participation in the x direction exceeds 100%. What is the issue behind this? Are my results reliable? If not, how do I work around the issue? Thanks! Time History - diaphragm…
  • Time History Analysis - interpretation of graph in STAAD

    .Hi, I am working on dynamic analysis using STAAD.Pro. I would like to check displacement with authorities limits during steady state (which in my case is 29.8Hz - operating frequency). Graphs of my case are shown below: Why max values are not…
  • Error- with nonlinear analysis each load case must be followed by perform non linear analysis then change

    Dear Admin, I tried performing the nonlinear time history analysis feature in STAADPro, but in the end, errors occur. This error says that "each load case must be followed by performing nonlinear analysis then change." I also get a solver error. After…