We’ve improved terrain grading in InfraWorks. Level sites for efficient site planning and preliminary design of proposed buildings, for example.
On the Create/Edit Features tool strip, click this button:
Draw a rough outline of the site to be regraded, and make any desired refinements. Then simply right-click to select a coverage. “Shape Terrain” lets you flatten a coverage and set the elevation of that coverage, either by dragging the vertical arrow grip (with a preview) to the desired elevation or by typing the desired value. All vertices on the coverage boundary are then set to this value.
You can further refine the site grading. Edit the individual vertex values either by clicking on the coverage again or by right-clicking and selecting “Edit vertices.”