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  1. jowook

    Is cable always tension only object?

    Thanks for reply, You mean that the prestressed cable or rope can resist compression?
  2. jowook

    Is cable always tension only object?

    Dear Engineers, I have little experience designing cable or presstress strucures and need some advice. Please look at the below linked picture. It seems like a prestressed cable object can take compression as long as the cable are still in tension due to prestress. The left guyed post is...
  3. jowook

    Mode Shape in Etabs

    The components of the eigenvector must have a unit, so the etabs can draw mode shapes on display. However the value of components are all relative, so your professor is correct. If you don't understand, please see an engineering mathematics book for eigenvalue problem. You just forgot what...
  4. jowook

    strange frame deformation

    The 2-D structure your model is not stable since your columns are moment released on every end of frames. Remove your moment releases and re-run on XZ plane.
  5. jowook

    Import section in SAP2K

    You can import a DXF to Section Designer on SAP2000 V19 which is the latest version. This is really convenient.
  6. jowook

    P-Delta analysis lost some loads

    Hello, everyone I found out why by myself. On nonlinear parameter settings, I switched from off for "Use Event to event stepping" to on, and the problem solved. It seems that SAP2000 solver stopped and gave up iteration without turning on this parameter during the solving the nonlinear case. I...
  7. jowook

    P-Delta analysis lost some loads

    Hi everyone, I've got different total reactions from two load cases. Those two load cases are both are nonlinear but one has P-delta and the other does not have. Non p-delta total reaction number is doubled. It seems p-delta analysis lost some loads. I didn't get any warnings or errors by...
  8. jowook

    ETABS non-iterative P-Delta analysis

    Hi there, ETABS non-iterative P-Delta analysis generates smaller second-order moment than the one from iterative P-Delta analysis. Also it seems that the non-iterative P-Delta cannot consider local P-small delta. Please share your experience. Thanks. Jo

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