Civil Engineering/Structure


Hello Sir. I want to ask that if we have to design a frame and its columns and beams fail in slenderness what should we do? (pinned supported,height 10m, height of frame cannot be changed) and if it fails in bending (about its major axis) than should we increase web depth or the thickness of flange should be changed? Also if it fails in compression? (1 failure at a time) Thanx.

Dear Nouman

For compression you should focus on gyration radius or moment of inertia in a view. Usually designers make a larger section with same profiles or plates. After all to increase the area of the section would be the last solution.

For bending you should increase area of flange . To increase the girder height would be a good solution unless the height to thickness ( dw/tw )of the web make you restricted.


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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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