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Hi everyone, My name is shabaz bangish. I am student of civil engineering at NUST. I am from Karachi, Pakistan.4 Its a very good initiative and I believe there would be a lot to learn here. see ya around guys!

Thanx for providing such a good platform for civil engineering community.

I agree. A quick manual calc for buckling would be good, but you should also model (a very simple one) for P-Delta(although very likely that Pdelta would be very minor) unless you can do that manually too. Just model the wall/column(depending upon geometry and thickness) that supports the tank and do a P-Delta analysis too in addition to buckling one, just in case..

I suggest to perform manual calculation for column of this OHWT for static/dynamic case. Compute compression load that it need to support and select x-section shape to avoid buckling under that compression load. After that, you can easily compute the maximum earthquake force for SDOF subjected to particular ground acceleration (Anil K chopra's book) . Use compression load and horizontal force for shaping final xsection of column. Then you can move to tank part. One way is to divide that part into inclined beams and one way slab.You will also need to take close looak at UGWT because its roof beams as well as foundation slab will transfer forces upper part to soil. You should also run it on etabs for counter check as well as consult senior engineer.

maybe they are every where but wo kehtay hain na jb apnay sir pay perti hai na tb daikhi hui cheezain b bhool jati hai one think should i do it or shall i not

wa Alaikomussalam bro welcome on the forum!!!

Yeah, Funnel shaped overhead tank ,supported on box/tubular column, is a possibility. An ideal single degree of freedom system for dynamic analysis.

Thats an overkill. Dont do it for undergrad. Even @ grad level things can be confusing involving dynamics. The best system for you would be comparing different Lateral force resisting system for a commercial building with simple plan and elevation in terms of constructability, cost, labour, ease of construction etc. This suggestion has already been posted in forum, i am just repeating it here.

Good to have people like you around.