You can easily check this in AutoCAD if you click on a topo line and look at the elevation in the properties panel. It has to be a CAD file with the topography represented in the 3 dimensions. Inspect the CAD file the civil engineer gave you. For this example, I am using a Survey Point of 6,460′ (USGS Elevation) which corresponds to the first topo line on the Northeast corner of my site plan.ġ. When we receive their CAD file for a site, we have to import it into Revit to create a topography surface that we can then edit.īefore you create topography in Revit, make sure that your Survey Point is set to a known elevation on your topography. Civil engineers typically use a 3D CAD program to model topography for a site.
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