It is sometimes necessary to exclude internal region from a topsoil strip. This might be the case if there is a tree or an existing building foundation in the middle of the site. The suggested way of doing this is to edit a reduce element and create an outline within the outline that defines the boundary. The system will treat an internal outline as an inner boundary effectively ‘punching out’ the inner area and excluding it from the reduce operation. You can define as many exclusion areas as you need with additional outlines.
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The Topsoil Stripping video demonstrates using the Reduce element for topsoil stripping operations and explains the importance of defining strip depths on a separate phase from subsequent earthwork elevations. |