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How to design a beam having the same thickness or depth of slab

Dear Kalutarage

You should consider a section with a width equal to column width + 8 times of slab thickness in each side or 0.25 times beam span ( the minimum quantity) . Then for a column of 40 x 40 and a slab of 30 cm of thickness and 6 meter long  you can design a section of about ( 40 + 8 x 30 + 8 x 30 ) = 520 cm or 600* 0.25 = 150cm. Then thge beam width is equal to 150 cm. for sides beams you should use 6 times of slab thickness and 1/12 of beam length.


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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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