Framework created by intersecting many TINs. I wanted a framework that would serve as a backdrop for other geometry so this is just the first stage of an ongoing effort. The intersection work was extremely tedious as it had to be done in stages. SketchUp is not happy when you intersect hundreds of thousands of elements. This model had over 600,000 entities when I was done doing the intersections. Sorry that again this is an image. The model is about 17 Mb so is too big for the warehouse.