• RAM Frame Dynamic Analysis Criteria

    When performing a dynamic analysis for Response Spectrum in Ram Frame, is it correct to check the reduced stiffness for steel members in the criteria? I have a situation where I need to scale up my dynamic loads to achieve the 0.85*ELF forces. The question…
  • Factor in X & Z direction and Scale factor for SRSS

    Hello Bentley support, I am working on a steel structure (Portal Reclaimer) which need to be designed in accordance to BNBC (Bangladesh Code). Can you please suggest how to assign parameter for SRSS response spectrum. However it is very similar…
  • ACCERLERATION SCALE FACTOR IN RESPONCE SPECTRUM ANALYSIS

    N. SUBRAMANIAM BOOK OF RCC DESIGN GAVE THIS SYNTEX *SCALE FACTOR = (0.16/2) × (1.5 / 5) = 0.024 SPECTRUM CQC 1893 X 2.078 ACC SCALE 0.024 DAMP 0.05 MIS SOIL TYPE 2 IN THIS CASE ACC SCALE VALUE IS CALCULATED USING Z/2*I/R BUT IN STAAD HELP CONTENT…
  • "RAM Structural System" modal analysis load combinations

    Hi, I am working on RAM Structural System. I looking to do a modal analysis on the building. Is there a way automatically generating the load combination for modal analysis? The way RAM does for direct analysis method? Or do I have to manually…
  • RE: RAM Frame Response Spectrum Base Shears

    It's all correct what you said. Use the base shear at the end of the report only when the base is the ground. You also have the right idea regarding I/R and scale factors. I don't usually bother with a separate case for drift unless I get to a point where…
  • RE: Rhythmic Excitation of Monumental Stairs in RAM Elements

    The response spectrum (acceleration and time data) is irrelevant if you only want the natural frequencies, but in Ram Elements something must be entered for the dynamic analysis to run. Depending on what you enter for the rsp, the scale factor and the…