Thanks to GeomGym (GSA plugin for grasshopper) saved a lot of time in nodal and elemental inputs in GSA.
Still trying to figure out why shear stresses and support reactions are opposite in adjacent sections. Hope Andrew will figure it out on Monday. :)

The roof

The roof is an anticlastic surface with long stripes of flexible PV cells intergrated on it.
The PV cells are oriented to the South and leave diffused natural light penetrate the roof from the North.

Roof 3d