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Civil Engineering/rectangular hollow tube


Dear sir,
i am designing a underground  21m long vertical rectangular hollow tube( 1.2x 1.3m internal size)(RCC). I could not find any formulas for the calculation of  circumferential stress caused by soil pressure in rectangular section. I find only formulas of hoop stress for cylinders(circular section).
Sir, can you please help me out

Thanking you!

Dear Niranjan

You may use the Rankine , Coulomb or other theories for confining pressure . It is very practical to find the necessary information in the net. This is a matter of engineering decision which is your own respnsibility.


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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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