Roof, Wall and Ceiling Intersectons

[Seiss Wagner]

When vertical wall planes intersect with skewed roof planes the roof/wall intersection is chamfered at the wall, however, when horizontal floor or ceiling planes intersect with roof planes the intersection at the horzonital plane is cut plumb.

Why is this? How do you get a smooth intersection of horizontal and skewed roof planes similar to walls and roofs?

[Karl Ottenstein]

Seiss wrote:
When vertical wall planes intersect with skewed roof planes the roof/wall intersection is chamfered at the wall, however, when horizontal floor or ceiling planes intersect with roof planes the intersection at the horzonital plane is cut plumb.

Why is this? How do you get a smooth intersection of horizontal and skewed roof planes similar to walls and roofs?

Sounds like you're still using trim-to-roof.

Use Solid Element Operations.

Karl

[Anonymous]

Seiss,
I use two methods.

If I am in AC 8 or later I usualy use slabs as a ceiling and over size the slab and use SEO to remove the part of the slab that extends beyond the underside of the roof.

If I am in a pre-AC 8 version I use a roof with zero pitch as the ceiling
and adjust the edge angle of the ceiling to the exact angle of the roofs.

The SEO method is faster and easier.
Peter Devlin

[Anonymous]

AC works the way you build your buildind, not the way you draw it. And this is its greastest advantage.

In real construction you do not trim slabs, you trim walls. And slabs usually do not step directly on the walls, but on a beam upon the wall. If you cut the end of the slab to the rool plane, the slab actually gets weaker. And I can't imagine workers on site trimming a slab edge by 32 degrees, for example

So, build your model the way you gonna build your building!

P.S. If it is a Mansard roof then it's a different story.