Need to standardized an irregular surface in order to BUILD IT!

Hi to everyone!

I have a major challenge: I´ve come up with this nice idea, of making a curved green roof for an institutional building. The client really liked it an now is time to figure out how to build it.

For the preliminary design stage, we create this nice surface (through Rhino´s Cage Edit tool), but it is not possible to build it exactly as it is because it woul be too expensive. The concrete is ok, but the artesanal and unique formwork needed over almost 800 m2 of surface would be too much.

So, I need to standarized the shape. Make modules that would repeat, because that means less formwork. Does anybody has a clue about a tool that would help to achieve this through grasshopper? 

Thank you,

Trinidad