I am creating a plan of an existing flat roof. The building is rectangular but has a large notch on one long side so the plan is kind of u-shaped. The slope is to the center with a single valley. When I put a split line down the middle it creates plans and valleys to the sides of the notch. How can I eliminate these planes? The entire north half slopes to the center. When I set the sides to "define slope" I get "slab edit failed" message.
Note, the south hatched section is a mansard style clay tile roof. There are parapets at the corners that wrap into the roof. How to I notch the sloped roof?
