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Hello again! Thank you for your instant reply! After some changes to both elastic models (sap and opensees) I managed to achieve satisfactory convergence between the reactions obtained from both software, especially those of F2 (axial reaction of the elements) but the rest of them (F1,F3,M1,M2,M3) a...

Hello! I am trying to perform a 3D Gravity Analysis of an 8-storey buidling model. This particular building consists mostly of bare frames and has 5 small walls surrounding the elevetor and the stairwell. I have allready modeled this building using both SAP2000 and Opensees with elastic frame elemen...

Thank you so much for your time and your answers!
Problem solved with the eval command.
Have a nice day!

When I remove the brackets and run the file there is a different warning saying: WARNING rigidLink perpDirn rNode cNodes - could not read cNode expected integer but got "0 1 2 3 ... etc" Concerning the second option of using lindex command, I will practically use the same number of lindex ...

Hello, It is my first attempt to create a 3D model of a building and I have made lists of nodes according to floor level. Then I tried setting rigid Diaphragm on each floor using the following command: set perpDirn 2: rigidDiaphragm $perpDirn [lindex $mn 0] [$dph1] where $mn is a list containing the...