Design a roof surface for the Gas Station

This gas station is intended to be a generic gas station located on a busy intersection. The fixed parameters of the model are the orientation of the site, the location of the six columns, the central kiosk and the surrounding buildings. Your model should at minimum include variable parameters for minimum street frontage and billboard height. You are free to include in other parameters (like location of street access, location of billboard).

The reference links:
http://www.fosterandpartners.com/Projects/0935/Default.aspx

http://www.oobject.com/category/top-15-modernist-gas-stations/

Concept：

Creating a natural impression
The conception is about the Green House
On the top of roof, it could be installed solar energy system or grows plants.

Designing Form：

Using geometric（Circle/ Organic）shape to create the roof of gas station. ex. Pennywort.

Sketch and 3D Modeling

There are six columns on the base. We create the six individual constructions which has different height and diameter with the Generative Components(GC)