Using The Modify Sub-Elements Tool - Autodesk 24000-000000-9860 - Revit Architecture - PC User Manual

(Draw Points)
(Draw Split Lines)
(Pick Supports)
NOTE Editing the shape of a slab, roof, or floor with these tools does not affect the shape of its analytical model.
A single analytical model face, based on the original top face, remains unchanged.
Important Considerations
Automatic Split Lines - In order to maintain the accuracy of the slab/roof geometry, split lines are sometimes
created automatically. Automatically created split lines will be deleted when the condition that caused them
to be created is no longer valid. For example, when 4 non-planar vertices become planar, or when you
manually create a split line.
Warped Slab/Roofs - A surface will warp when bounded by 4 non-planar boundary edges or user-created
split lines. To avoid warping, add a split line between opposite vertices.

Using the Modify Sub-Elements Tool

You can use the Modify Sub-Elements tool to manipulate one or more of the points or edges on a selected
slab, roof, or floor.
1 Select the slab, roof, or floor you want to modify.
2 On the Options Bar, click
NOTE When you select the Modify Sub-Elements tool, the Options Bar will display an Elevation edit box in
which you can enter a common elevation value for all the selected sub-elements. This value is the vertical
offset between the vertices and the original top face of the slab.
3 Drag a point or edge to modify the location or elevation.
(Reset Shape)
(Modify Sub-Elements tool).
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