here is an example of a section of a building with a roof that was created
using the pick walls method.
i am not sure, maybe i have not studied roofs enough, but i would like roof
to use the exterior surface of the core to bear on, not the interior
surface, is this a function of the family ietself, or is there a way to
change this individually by roof instance? this is the way that most modern
trussed roofs are these days; at least here in the south. in the olden days
of hand framing, the rafters would bear in the interior surface and be
notched out to rest flat on the top plate of the walls. nowadays, the truss
has a flat surface on the bottom, and the bottom chord of the truss sits on
the wall plate and the sloped part of the truss would bear on the exterior
rough surface of the wall.
thanks
doug