Page 579 - Divyank Tyagi

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sketChing For Floors, Ceilings, and rooFs 545

Figure 13.8
You can use the
Floor By Face tool
to manage slabs in
more complex build-
ing designs.

Figure 13.9
You can configure
a pad as a slab on
grade for a base-
ment.

Sketching for Floors, Ceilings, and Roofs

Because floors, ceilings, and roofs are sketch-based objects, the method you use when
creating the boundary lines is critical to the behavior of the element to those around it. The
recommended method is to use the Pick Walls option, as shown previously in Figure 13.5.
By selecting the walls to generate the sketch for the roof, you are creating a parametric
relationship between the walls and the roof. If the design of your building changes and the

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