Autodesk 24000-000000-9860 - Revit Architecture - PC, User Manual

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Sample topographical surface defined by picking points in a site plan view
Creating a Toposurface by Picking Points
1 Open a 3D or site plan view.
2 Click Site menu
➤
Toposurface, or on the Site tab of the Design Bar, click Toposurface.
Revit Architecture enters Sketch mode. The Design Bar displays the Toposurface tab.
3 On the Toposurface tab of the Design Bar, click Point.
4 On the Options Bar, set a value for Elevation.
This value determines the elevation of the point being placed. (The points and their elevations
are used to create the surface.)
5 Next to the Elevation text box, select one of the following:
■ Absolute Elevation: Points display at the specified elevation. You can place points anywhere
in the active drawing area.
■ Relative to Surface: Allows you to edit an existing toposurface by placing points on it at the
elevation you specify. To use this option effectively, you may want to work in a shaded 3D
view.
6 Click in the drawing area to place points. If needed, change the elevation on the Options Bar
as you place additional points.
7 To complete the surface, click Finish Surface.
Creating a Toposurface from Imported 3D Data
You can automatically generate a toposurface based on 3D contour data imported in DWG, DXF, or DGN
formats. Revit Architecture analyzes the 3D contour data and places a series of elevation points along the
contour lines.
You must import the 3D contour data before creating the surface. See Importing or Linking CAD Formats
on page 1307.
NOTE When you import data with the Current View Only option selected, you cannot use the data to create a
toposurface.
To create a toposurface from imported 3D data:
1 Open a 3D view of the site plan.
2 Click Site menu
➤
Toposurface, or on the Site tab of the Design Bar, click Toposurface.
894 | Chapter 13 Working with Site Components