rlackore

You can get close using a Pony Wall for the foundation wall and checking Wall Specification>Structure>Platform Intersections>Ceiling Platform>Hang Floor Platform Above on Wall. Draw a Floor Truss, modify it, lock it, then copy it across. You will still need some CAD work to clean up the sections, or you can not worry about modeling the condition and simply reference the nice detail you have.

I see your windows when I open the plan:

I don't think there is an automatic method. You could fill that space with a Material Region.

DAE

The projected areas of the porch ceiling and the 2nd floor bedroom overlap. If the porch ceiling is at 12', and the bedroom floor is at 10', something has to give. If you raise the porch ceiling, Chief is going to raise the bedroom floor. If you lower the bedroom floor, Chief will lower the porch ceiling. You can't have it both ways.

Cut a section through that area. When you raise the porch ceiling, you're also raising the floor of the second floor bedroom. Solving that issue will put you on a path to solving your original issue.

Pony wall with a wall cap for the sill. Maybe I'm missing something in what the OP is trying to accomplish.

I suggest using Pony Walls.

Change the symbol Label: Create an Electrical Schedule: There are options you can play around with to get the schedule and labels exactly how you want them; consult the X13 Reference Manual.

Is there anything to smoke in the Yukon, other than salmon? FWIW, I like the design.

The reason you're seeing the "gap" after using my "fix" is because the camera is picking up the wall beyond, which also has a sill plate. With a concrete deck, I doubt that you want a wood sill plate on top of your masonry walls, so getting rid of the sill plate not only fixes the visual issue, but is probably more correct IRL.

It does work. Set you camera backclip to 0mm.

To get rid of the "small gap", select the interior wall: Wall Specification>Foundation: uncheck Sill Plate

Maybe: Wall Specification>Structure>Platform Intersections>Ceiling Platform>Hang Floor Platform Above on Wall: check Subflooring to Wall Interior

When PBR was introduced, I had this issue whenever I had a camera that was showing more than one floor, e.g. open-to-below areas, stairwells, etc. This is one reason I gave up on PBR shortly thereafter.

Select the pony wall, change the Display in Plan View setting to show the bottom wall, then use the Edit Wall Layer Intersection tool to correct the issue. Should work, but it can be tricky.

The molding polyline for the cables and handrail run right through the corner, but I use separate distribution paths so I can precisely adjust the location of the newels.

I take it one step further than Glenn, and use a Distribution Path for the newels on fascia-mount systems.

Digging through all my old references, I've found a few that advise that the horizontal length of the footing should not be less than 2 feet. So, length should be no less than 2 feet, and drop should be no greater than 2 feet. Unless engineered, of course. I advise using a haunch in the footing at the step.

Short or long depends on the site characteristics. My general rule of thumb is to try and keep segments a minimum of 5'-0" long, and to drop no more than 24" per step. These rules aren't always achievable, or desirable. I can't remember if there is a rational engineering basis for these rules. It's important to provide adequate horizontal reinforcement at the drops to help prevent cracking at the reentrant corner formed at the drop. Here's how I annotate these conditions in Chief:

See if turning off the "Walls, Layers" layer in the Reference Display Layer Set helps.

Does changing it in the Roof Plane Specification dbx work?

Maybe adjust the Eave subfascia and fascia settings in the Structure tab:

Maybe a 3D Molding Polyline would work for your situation:

I don't think Save in Plan will matter. The Chief export process doesn't include objects like image files, pdfs, etc.