A slab can be modified by a 3D shape, such as an extrude, tapered extrude, extrude along path, sweep, solid, or closed mesh. These modifications allow a slab to have a ramp, add support beams, or include drainage features. The boundaries of the modifier can be specifically defined according to its shape, or they can simply be defined by the slab boundary.
Create a solid section from a grade object as described in Creating a Solid Section from Grade Objects, and use the resulting sloping solid as a 3D modifier.
To add a 3D object to a slab:
Select both the slab and the 3D modifier.
Select the Add 3D Object To Slab command from the appropriate menu:
● Architect workspace: AEC > Add 3D Object To Slab
● Landmark workspace: Landmark > Architectural > Add 3D Object To Slab
● Spotlight workspace: Spotlight > Architectural > Add 3D Object To Slab
The Add 3D Object to Slab dialog box opens.
► Click to show/hide the parameters.
Click OK.
To subtract a 3D object from a slab:
Select both the slab and the 3D modifier.
Select Subtract 3D Object From Slab.
● Architect workspace: AEC > Subtract 3D Object From Slab
● Landmark workspace: Landmark > Architectural > Subtract 3D Object From Slab
● Spotlight workspace: Spotlight > Architectural > Subtract 3D Object From Slab
The 3D geometry is subtracted from every component that it overlaps.
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