https://dai.ly/x9d176m<br />https://dai.ly/x9cytxm<br />https://dai.ly/x9cyqdo<br />https://dai.ly/x9cyhh4<br />https://dai.ly/x9cvrfi<br />https://dai.ly/x9cvf16<br />The Superelevation Axis of Rotation in Civil 3D determines the pivot point for the roadway cross-slope during superelevation transitions. This is essential for designing roadways where the lanes tilt to accommodate curves. By setting the axis of rotation, you control how the road cross-section adjusts during superelevation.<br /><br />Here’s a step-by-step guide to managing the Superelevation Axis of Rotation in Civil 3D:<br /><br />1. Open the Superelevation View<br />Select the alignment in your drawing.<br />On the ribbon, go to the Alignment tab.<br />In the Design panel, click Edit Superelevation to open the Superelevation View.<br />2. Access Superelevation Options<br />In the Superelevation Editor, ensure your alignment has superelevation data applied. If not, you’ll need to calculate superelevation first:<br />Click Calculate Superelevation and follow the wizard to define parameters like design speed, curve radii, and lane widths.<br />Once superelevation is applied, lanes and transition details will appear in the Superelevation View.<br />3. Set the Axis of Rotation<br />The axis of rotation determines where the road pivots during superelevation (e.g., centerline, edge of pavement, etc.).<br /><br />To set the axis of rotation:<br />Select the corridor assembly associated with your alignment (or create a new one if necessary).<br />Open the Assembly Properties:<br />Right-click the assembly and select Properties.<br />In the Assembly Properties dialog box, go to the Superelevation tab.<br />Under Axis of Rotation, choose one of the following options:<br />Centerline: The road pivots around the centerline.<br />Left Edge of Pavement: The road tilts around the left edge.<br />Right Edge of Pavement: The road tilts around the right edge.<br />Custom Location: Specify a specific offset from the centerline.<br />4. Update Corridor Properties<br />Open the Corridor Properties for the corridor associated with the alignment.<br />Go to the Parameters tab and ensure the superelevation settings are linked to the assembly.<br />Rebuild the corridor to apply the changes.<br />5. Verify the Axis of Rotation<br />Use the Section Editor to check how the superelevation is applied:<br />Select the corridor, right-click, and choose Section Editor.<br />Navigate through stations to see how the roadway tilts based on the axis of rotation.<br />Make adjustments as needed by returning to the assembly or superelevation parameters.<br />6. Adjust the Superelevation Transition (Optional)<br />In the Superelevation View, fine-tune the transition regions:<br />Modify the tangents or curves to adjust the length and slope of transitions.<br />Use grips or manually edit values to meet design requirements.<br />Tips:<br />Dynamic Updates: Enable Automatic Rebuild for real-time updates when you make changes to the axis of rotation or superelevation values.<br />Check Standards: Ensure the chosen axis of rotation complies with local design standards or project requirements.<br />Visual Verification: Use the 3D view to visually inspect
