Doug_N

This is really a bad design in my opinion. The wall, roof and whatever is constructed above would result in a lateral force trying to move towards the water facing wall. That should have been a stepped foundation wall. This is not part of what you are addressing either. Not that anyone asked me for my opinion, it just my comment. Doug

One more comment: The boathouse doesn't have a room because there is an opening where the masonry chimney is specified. Including a room divider (invisible wall) to close the room might help.

I downloaded your plan file and took a quick look at it. Walls are, by default, set up to go to the height specified in the room definition. Foundation walls are treated differently, and have a separate dialogue for a "stem" wall. The footing height may be adjusted separately in elevation views to sort out step footing. Wall heights are a struggle however, because they try to snap to the ceiling height. Without seeing the floor above (if there is one) it is hard to see what you are trying to accomplish. What is the purpose of the staggered wall top heights? Why is the buildi

That is a great question. I am going to try it out.

Levis, The third floor is required to create the raining walls and the penthouse. The Open to Below is so that the floor of the third floor does not interfere with the actual roof. The penthouse is also on the third floor. The walls have been nudged to make sure the outer surfaces align. The railing wall is a pony wall. Thanks for taking a look at the problem. Doug

Glenn In the coach house file the rooms don't have Soffit Surface selected. It still has the same problem. That was a problem in the simple model that I posted earlier

Here is the actual plan file with rooms all specified to have no flat ceiling and the resulting cross section. Coach House.zip

This is a simple model of the more complex building that I am doing. All of the rooms are specified in that model it the program still behaves this way. Maybe I should post the plan that is the problem.

What the room is called shouldn't affect the ceiling when you specify what the ceiling is I would think.

That should be how it is specified

It seems that if I joists are used for a roof, and the room that is below that roof (actually all rooms in this case) are set to use the underside of the roof for a ceiling surface the ceiling plane is generated above the bottom surface of the rafters. I have yet to find out why this is happening. I don't remember having this problem in X12 Ceiling Plan Problem.plan

That is the answer to your question, and if you are printing (to a PDF) in colour that is multiplying the size of the graphic data by 32 as well (32 bit colour.)

Got to admit it, the ramp trick worked really well. Thanks Rob!

Ok so I am getting close to what I need but wow was this difficult to do.

Hi Larry, Yes that more or less represents the concept. I have included my actual plan in the original post.