When drawing the shape of a light-obstructing object, the height of the shapes you are inserting depends on what was last entered into the Set Photometric Solid Elevations dialog box.
DM Electrical
Outdoor PhotometricsSet Light-obstructing Solid Elevation
The Set Photometric Solid Elevations dialog box will appear.
Enter the appropriate values and press OK.
This height will then be used to define any light-obstructing objects that are inserted from now on. You may change the height of existing objects after they have been inserted, or you may set the elevation before you insert each object as described above.