Configure Simple Subgrade Adjustments

Once you have assigned simple subgrade adjustments to regions on your site (using the Identify Site Regions command), use the Configure Subgrade Adjustments command to specify or edit their thicknesses. Then, when you rebuild your takeoff surfaces, the FD with subgrades adjusted surface is formed by lowering the Finished design surface by that thickness within the region occupied by the subgrade adjustment. When using this command, the color of each shaded region with a subgrade adjustment changes as the thickness of the subgrade adjustment is specified, thereby indicating those to which a thickness remains to be assigned.

Prerequisites:

To access the command:

To configure a subgrade adjustment:

  1. Click in the Subgrade adjustment region box and move your cursor over each shaded region in the Plan View to see its type or name in the Explore identified subgrade adjustments box.
  2. To add or change the thickness of a specific subgrade adjustment, click in its shaded region.
  3. In the Total thickness box, enter the sum of the thickness of all the material layers that have been specified for the site improvement that is to be constructed within that region.

    Note: To use the same thickness for subgrade adjustments in multiple regions, toggle the Auto-advance mode on by clicking the icon.
    Tip: You can toggle the Auto-advance mode on/off by pressing [Control] + [.] (period or decimal point).

  4. Repeat steps 2 and 3 to add thicknesses to multiple regions.
  5. Click Apply after each thickness change.
  6. Click Close when you are done.
  7. To add names and labels to the subgrade adjustment regions, use the Name/Label Site Regions command.

Related topics

Understanding Area-based Site Improvements

Categorize Takeoff Layers

Create and Edit Site Improvements

Area Site Improvement Options