USAGE OF STAAD FOR CYLINDRICAL BOLTED STEEL TANK DESIGN

Friends ,I want to design a cylidrical bolted steel tank using STAAD plate FEA and AWWA D 103-09 standard.Kindly guide about the methodology of using STAAD for this purpose and also the relevant clauses of AWWA D 103-09.Thanks in advance for your support.

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  • Using STAAD, you should be able to analyze the model. By analysis, we mean the operations that will enable you to obtain node displacements, forces, moments and stresses in frame members, stresses in plate elements, reactions at supports, etc.

    You should also be able to design the frame members - concrete as well as steel. However, STAAD does not have the facility to design the steel plates of the tank. By design, we mean the code-based checks that tell you if the plates are adequate or not to carry the stresses resulting from the analysis.

    A rudimentary example in concrete that shows the modeling of a rectangular tank subjected to hydrostatic pressures is available in example 10 of the STAAD Application examples manual.



  • Comments:

    Code based checks for projects in the US, ASCE, IBC and API and others.  Wind load, seismic , load combinations on each code are slightly different.  For tank steel design, recommend use API code for allowble stress.

    With questions:

    For cylinderical steel tank with steel beam rings, should I model these rings as plate elements or beam member?

    Thanks.

    Staad123 NewForumMember

  • As Kris has said, Staad does not do code check of plate elements.  Yes, the ring beams may well be modelled as beam elements if a code check is important to the API code. Apologies in case this does not answer your question. In that case,  please state the problem in further details.  

    Sudip Narayan Choudhury

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