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3 Select the roof to convert, and press ENTER.
4 When prompted to erase the original geometry, press ENTER to
keep the existing roof, or enter y (Yes) to erase it.
5 Edit the properties of the roof slabs on the Properties palette, if
needed.
Creating a Slab or Roof Slab from a Polyline
Use this procedure to convert a closed polyline to a single slab or roof slab
that has the properties of the tool you select. You can edit these properties
after the object is created. The first line drawn in the polyline becomes the
baseline edge of the slab or roof slab.
Creating slabs or roof slabs from polylines is useful when you need to create
a complex shape or one with curved edges. The smoothness (tessellation) of
curved edges is controlled by 2 AEC display resolution settings called Facet
Deviation and Facet Maximum. Beginning with Autodesk Architectural Desktop
2007, you can adjust these settings after the slab or roof slab is created. Also,
the individual segments or facets making up a curved edge are no longer
treated as separate edges; each arc on the perimeter of a slab or roof slab is
treated as a single edge. For more information, see Specifying the Display
Resolution of Objects with Facets on page 208.
1 Draw a closed polyline of the desired shape in the location where
you want to place the slab or roof slab.
2 Open the tool palette that contains the slab or roof slab tool you
want to use.
(You may have to scroll to display the desired tool.)
3 Right-click the tool, and click Apply Tool Properties to ➤ Linework
and Walls (or Linework, Walls and Roof, in the case of roof slab
tools).
4 Select a closed polyline, and press ENTER.
5 Enter y (Yes) to erase the polyline, or n (No) to keep the polyline
in the drawing.
6 Specify a mode:
If you enter d (Direct), the polyline vertices become the vertices
of the slab or roof slab perimeter. Any slope value specified in the
tool properties is ignored.
Creating a Slab or Roof Slab from a Polyline | 2393
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