Grade Superelevated Intersection Course Introduction
(Course Duration: 30 minutes)
Course Description
In this course, you will learn how to grade a superelevated intersection. Superelevated intersections can present a grading challenge in Civil 3D as the pavement cross slope varies through the intersection. To accurately grade an intersection, where one or both of the intersecting roads have a non-standard” cross grade, you will need to use offset and/or elevation targets to override the default offsets and/or cross slopes. To create these targeting features, and maintain a dynamic intersection model, you can use a setup surface. The grading example presented in this course addresses a T-intersection, where only the primary road is being superelevated. The same grading principles can be applied to 4-way intersections, where both roads have non-standard cross grades.
Course Objectives
The material presented in this course teach you how to:
· Create a setup surface for a superelevated road
· Establish offset alignments that are bound to a centerline alignment
· Establish surface profiles that are bound a setup surface
· Create an intersection object using existing offset alignments and lane slope profiles
· Create a corridor surface using links and feature lines
· Edit the design speed and recalculate superelevation for an alignment
· Update the intersection model after editing superelevation
Course Prerequisites
To participate in this training course, you should have the following:
· Fundamental experience working with alignments, profiles, and corridor models.
· Fundamental experience working with Intersection objects.
Tips:
· Turn off your phone, close your email, text and social media apps.
· Plug headphones or ear buds to your computer.
· Go Full Screen when watching videos.
