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Civil Engineering/scale factor -etabs


Dear Sir,
Good Day :
1.could you please give me the procedure to apply the Response spectrum scale factors in etabs as I am being confused about that while doing the design.
2.If the total shear for spectrum in x direction is greater than 85 percentage of the shear due to static shear do I need to consider the scale factor?
Appreciate for your valuable answer

Thanks & Regards,

Dear Raviarjun

There is no need that the results of spectral method being greater the the results of static method ( or 0.85 times static results in the case of regulary buildings) then you must use a scale factor for the specific design spectra to fulfill this.


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Babak Esmailzadeh Hakimi


I can answer questions in Structural Engineering, Earthquake Engineering, Project Management and Project Control topics!


I am experienced in the area of earthquake engineering in electrical power industry, i.e. Lifeline Earthquake Engineering. My focus has been on structural seismic design of power installations. Recently I have got involved in project management in the category of constructional engineering.

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Bs degree in Civil Engineering from Ferdowsi University ,1988, Mashhad Iran, Ms degree in Earthquake Engineering, Sharif University of Technology, 1993, Tehran, Iran

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