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So where exactly do we access the setting for this Section Cut Material? The answer lies in Site Settings, found under the Settings pull down menu.

Selecting Site Settings brings up a control panel as shown below….

Halfway down the control panel, you will see an area called Section Graphics. The button on the right hand side is labelled Section Cut Material. Hitting the Selector button (the little square box with the three dots) takes you directly to Revit’s standard Material Library / Editor.

You will see that “Site-Earth” is highlighted as the current material. If you’d prefer a black, solid base to you topographical section, just select Solid Fill from the Cut Pattern selector.

After confirming this with Apply / OK, your section through the toposurface should look like this….

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