Elevation of objects in the network can be set by using Digital Terrain Data.
The Set Elevation of Objects dialog is used to carry out this process. See Setting Object Elevation for more information and full instructions.
The dialog is displayed when Set Elevation of Objects is selected from the Model menu. The Model menu is only displayed when a network is open and one of the network views is the Current Active Window.
Terrain data (NTF) files covering the area to be updated are required. These files must all be in the same directory.