panel and structure with polysurface

Hello,

For my final project, I need to design the roof structure of a building.

I modeled the shape in mesh, and converted each face of the mesh to surfaces.

Is there a way to unify this surface so that you can create a structure (lattice) and panels (of identical size)?

I tried everything I could, and looked for solutions without result.

Thank you in advance for your help, and sorry for my level of English