How can I model this polyhedral structure through a surface?

[gehlot]

[Mahdiyar]

Have you checked polyframe for rhino?

[gehlot]

Yes i did. But it is not as easy as it appears. You have to develop a force diagram by hand to get a form like this. And nobody explains how to develop a force diagram such complex

[Bilan_Gumus]

I have the same problem, there is no explanation anywhere …