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The Modeling Driveways workflow presents a straight forward and intuitive solution for modeling driveways in Civil 3D along a corridor with curb and gutter. Using a custom assembly created in Subassembly Composer (provided in this workflow), along with custom driveway blocks that include the drive apron and back of curb, you can accurately model the driveways for your project. For each driveway you need to create the CAD geometry, then grade the driveway feature lines, lowering the curb height through the driveway. After the driveway features are edited, they can be added to the corridor model as horizontal and vertical targets.
This process leverages two slightly different approaches, depending on where the driveway falls along the alignment. If the driveway is added on a horizontal and vertical tangent, one approach will be used. If the driveway falls along a curve, a different approach is needed that involves a couple more steps.
This workflow leverages layers to make it easier to add targets to the corridor. The layers propagate from the original CAD polylines to Feature Lines. Civil 3D grading tools will be leveraged to grade out the driveway features.
This workflow may not be suited for all driveway modeling scenarios, but can likely be tailored to meet your needs. This workflow can also be used to model curb ramps at pedestrian crossings.
Rehab Corridors are a unique corridor type in Civil 3D, and although they are very similar to standard corridors, they have a slightly different workflow and toolset. Rehab Corridors are created with the Rehab Corridor tool, and require Lane and Rehab inputs to build the initial rehab assembly. To create, view, and edit Rehab Corridors, the Rehab Corridor Editor is used. This editor is similar to the Corridor Section Editor, only special rehab tools allow you to edit the Rehab Corridor and build rehab reports. The assemblies that are created for Rehab Corridors come from the “New Rehab” Assembly Group, on the Civil 3D tool palette. After placement into the drawing the Rehab Assembly can be built-out to include lane widenings, shoulder extensions, and daylight treatments. To get rehab quantities a materials list can be created for the Overlay, Mill, and Level shape codes.
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