Autodesk CIVIL3D Tutorial - Page 508
Tutorial: Creating Inter s, Exercise 1: Creating a Peer Road Inter
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For more information, see the AutoCAD Civil 3D Help topics Understanding Intersections and Understanding Roundabouts. Tutorial: Creating Intersections This tutorial demonstrates how to create several types of intersections. You will create two basic types of intersections, which differ in how the intersecting road crowns are blended: ■ In a peer road intersection, the crowns of both roads are maintained. The primary road centerline profile is maintained, and a locked PVI is created on the secondary road centerline profile where it intersects with the primary road centerline. The pavement of both roads is blended into the curb returns. ■ In a primary road intersection, the primary road crown is maintained. The primary road centerline profile is maintained, and a locked PVI is created on the secondary road centerline profile where it intersects with the primary road centerline. Two additional locked PVIs are created on the secondary road centerline profile at the primary road edges of pavement. The primary road cross-slope is maintained, and the secondary road pavement is blended from the primary road edges of pavement along the secondary road pavement edges. You will also experiment with curb return widening parameters, which are used to create turn lanes. For information on adding widening regions to offset alignments that are outside the intersection area, see the Adding a Widening to an Offset Alignment (page 239) exercise. For more information, see the AutoCAD Civil 3D Help topic Creating Intersections. Exercise 1: Creating a Peer Road Intersection In this exercise, you will create a three-way intersection and generate a corridor that maintains the crowns of both roads. To create a complete intersection model, you must have a centerline alignment and profile for each of the intersecting roads. The horizontal and vertical 496 | Chapter 14 Intersection and Roundabout Tutorials