Retrofit Centerline Profile Course Introduction
(Course Duration: 50 minutes)
Course Description
In this course, you will learn how to establish the design profile for an urban roadway design. Design profiles for urban roadway designs often need to be retrofitted to meet site constraints and strict design criteria. In order to design a roadway that can meet these requirements, you need to determine where the variances are in the proposed grading design, then use a “reverse grading” approach to define the allowable elevation envelope for the proposed profile. Once this elevation range has been determined, the design profile can be modeled to ensure your design is compliant.
To demonstrate how to retrofit the design profile for an urban roadway design, a common scenario and simple dataset will be demonstrated. The proposed centerline profile for the project will be determined from the existing outside edge of sidewalk, on both sides of the road. A custom reverse grade assembly will be used to define the allowable elevation envelope, and the profile geometry tools used to manually fit the proposed profile within the constraints.
This course is the first in a series of courses included in the Urban Road Design Learning Path. The workflow and design strategies used for Urban Roadway Design are derived from the Wisconsin Department of Transportation, and have been simplified for purposes of this training curriculum.
Course Objectives
The material presented in this course teach you how to:
· Use a reverse grade assembly to model the variance in a roadway design
· Leverage a setup corridor, and setup surfaces, to define elevation constraints
· Define the allowable elevation envelope for a retrofitted design profile
· Layout a design profile by solving PVIs between tangents
Course Prerequisites
To participate in this training course, you should have the following:
· Knowledge and experience working with Civil 3D
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.