Command Description
The 3D Object From Surface command allows you to select a top surface and use a depth, elevation, or second surface to create a 3D solid object. No boundary is required, however one or many closed boundary strings can be applied when creating the 3D solids to limit the area of the surface being used.
- Click in the Surface selection field and select the surface.
- Optionally select one or more closed linestrings to be used as boundaries. Click Options button for additional selection options.
- Pick a Mode from the list:
- “Depth” will apply a value from the surface to create the solid. A positive number applies in a downward direction and a negative number will be applied in an upward direction.
- "Elevation" will project the surface up or down to an entered elevation.
- "Surface" - will project the “Top” surface to the “Bottom” surface chosen. The resulting solid can only be created where the 2 surfaces exist over each other.
- A vertical Offset can be applied to the Top surface. A positive number applies in an upward direction, and a negative number applies in a downward direction.
- Enter a BIM Group name for the new object. This will be saved in the project explorer under the BIM Data.
- Enter a Name for the new 3D object.
- Select a Color for the new 3D object.
- Select or create a Layer for the new 3D object.
- The Chord tolerances are applied when using linestrings that contain curves.
- Horizontal – This applies to horizontal curves.
- Vertical – This applies to vertical curves.
- Do either of the following:
- Click Apply to create the 3D solid and keep the 3D Objects From Surface command pane open.
- Click Close to end and close the 3D Objects From Surface command pane.
Tips: Sometimes the 3D object created is not formed correctly from the surface. This can often be fixed by one of the following methods.
- If using an imported surface, try recreating the surface in TBC using the original surface as the member or use the surface cleanup tool.
- Use a boundary string with the surface.
- If using a boundary, use the Line Node Clean-up tool to make sure the boundary string is clean.
Example: 3D pavements