You may need to make holes in Slabs to accommodate objects such as staircases, or for an open atrium space.
1.Select the existing Slab.
First Select the Existing Slab
2.With the Slab tool active, draw a new contour within the Slab’s boundaries.
3.This new contour will be interpreted as a hole in the Slab.
See also Selecting Slab Hole.
Relevant topics
How to create Text-shaped Holes
There is an easy way to create text shaped holes in any construction elements with the following steps: Step 1: Open Text Object Select "3D Text Object" from the ArchiCAD Library in Object Settings dialog. It can be found in ArchiCAD version's Basic…
Structural Supports at Openings and Holes
Support elements attached to certain holes or openings have specific limitations.
Support placed at
Allowed Support Types
Support is associated to
Opening element
Point Support at nodes only
2D Member
...
Selecting and Modifying Beam Holes
Modify Single Hole
1.Do one of the following:
•With Arrow tool active, click in the center of the hole.
•With any other tool ...