Hi Gustavo. The only thing I could did was to create shell elements with 3dface and import them to Sap2000 v10.In the edit option after selecting the shell element you can use the extrude areas to solids option. With that command you can apply a thickness to your shell element.
Thanks for the reply but I tried all this things also. I draw 3d solids but it doesnt work. The thing is that Sap2000 v10 said that to import solids to it you have to create meshed polylines in AutoCad. I dont know to what command the Sap2000 people refer.
I want to draw my solid model in AutoCad 2007 and then export it to Sap2000 v10. Sap2000 help said to use meshed polylines but I dont know what command of AutoCad is used to create them. If someone knows about this please answer me, I will appreciate it.