Triangulate a surface into a gridshell

Hi 

Im in the middle of a project on my architectural education, where we are creating a bridge. The bridge is covered by a gridshell, hence i need help. 

The gridshell is not the main focus in the project, and therefore i am searching a grasshopper definition that is more or less done. The gridshell is made of glass, and as i understand it, the structure needs to be triangulated to be stiff. The definition should be able to create a triangulated gridshell from a surface of 3 curves. Similar to projects like Norman Fosters great court in Britain, Blob in Eindhoven, BMW Welt etc. I have been searching around the forum to see after advices and found Arthur Manis definition.

http://www.grasshopper3d.com/photo/pmadome110-1/prev?context=user

However i can't get the definition to work probably. 

I have attached a picture of the bridge in rhino

Regards TJ