Civil Engineering/Frames


Hello.. What is effective length factor for major axis and minor axis?

Dear Nauman

Effective length factor(of compression member) is a factor  depending on support situation of column and whether the lateral sway of the frame is allowed or not. For a non sway frame and columns with assumed hinge support each end, the K can be assumed to be equal to 1. for more restraints in supports  the K will be reduced and it can be minimized to 0.5. But for sway allowed frames K will be greater than 1 and in worst situation it may tend to infinity ( actually more than 10).


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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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