How to combine the response spectrum with gravitational loads? I have made some iterations placing the dynamic shear loads per floor manually to obtain a coherent stress diagram and not all positive or negative as the spectrum does. When comparing both scenarios (Dead+ RSX) / (Dead+EQx) (EQx lateral dynamic loads entered manually), I find that directly combining the spectrum with gravitational loads does not give similar and sometimes non-coherent values.
What if I didn’t define any modal cases but in the load pattern, I specified and define the seismic lateral with all their parameters (codes, PGA, spectrum type, etc) for X direction and Y direction and choose automatic combinations. Won’t the program perform the seismic analysis???
Csi should review and check these webinars for accuracy of information presented before posting them online.
what about the mass source!!
How to combine the response spectrum with gravitational loads? I have made some iterations placing the dynamic shear loads per floor manually to obtain a coherent stress diagram and not all positive or negative as the spectrum does.
When comparing both scenarios (Dead+ RSX) / (Dead+EQx) (EQx lateral dynamic loads entered manually), I find that directly combining the spectrum with gravitational loads does not give similar and sometimes non-coherent values.
What inputs do you add for the "Loads applied" for a Ritz analysis?
Thanks for the video.. Can u plz upload a video on the equipment loads on slab accounting the vibrations and its analysis???
What if I didn’t define any modal cases but in the load pattern, I specified and define the seismic lateral with all their parameters (codes, PGA, spectrum type, etc) for X direction and Y direction and choose automatic combinations. Won’t the program perform the seismic analysis???
how to use the excitation angle?
thank you.
hi, why is scaling not done?
How to check excitation angle of building
First find out base shear in both direction x and y then excitation angle = tan-1(Fy/Fx)
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Can etabs automatically do structural analysis and gives the quantity of materials?
nop
Jigar rana yes of course