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Grade Curb Cut Profiles Course Introduction
(Course Duration: 40 minutes)
Course Description
In this course, you will learn how to grade the curb cut profiles to model driveways in an urban roadway design. In urban roadway designs there are a number of instances where curb heights need to be lowered to model driveways and sidewalk ramps. Given the frequency of these instances, it is important to have a straight forward and easy solution to create and manage the curb heights for your project. Using a custom curb cut assembly that allows you to control the curb height is an ideal solution to get this level of detail into your grading models.
To demonstrate how to use a curb cut profile in an urban roadway design, a common scenario and simple dataset will be used. A custom block will be used to locate the driveway geometry, and to place transition points for the curb height. Curb Cut profiles will be created for the left and right curb heights, and PVIs added to lower the curb height in the driveways.
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:
· Create the curb cut profiles for an urban roadway design
· Project AutoCAD points onto profiles in a Profile View
· Model curb height transitions for driveways
· Make quick and easy refinements to curb cuts in an urban roadway design
Course Prerequisites
To participate in this training course, you should have the following:
· Fundamental knowledge and experience working with Civil 3D
· Completed Urban Roadway Design course “Retrofit Centerline Profile”.
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.
Create Proposed Corridor Course Introduction
In this course, you will learn how to piece together the primary and secondary baselines to establish the proposed corridor model for an urban roadway design. The primary road grade will leverage the retrofitted centerline profile, curb cut profiles, and custom curb cut assembly to lower the curb heights in the driveway. The secondary baseline grading will incorporate the curb return regions for the intersection. With these core features graded, a proposed surface will be created for review and inspection.
To demonstrate how to model the primary baseline in an urban roadway design, a common scenario and simple dataset will be used. A custom curb cut assembly, modeled in Subassembly Composer, will target the curb cut profiles created in an earlier task to set the curb height. Partial assemblies will be used to model the intersections, and a top corridor surface will be created from links and feature lines.
This course is among 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.
The material presented in this course teach you how to create a 3D model for urban roadway design, including how to:
· Create the proposed corridor model using the retrofitted design profile.
· Model the primary road baseline using curb cut profiles to control the curb height.
· Model the secondary road baselines to blend the intersection grades.
· Create the proposed grade surface for inspection and validation.
· Completed Urban Roadway Design course “Grade Curb Cut Profiles”.
Modeling Sidewalks and Driveways Course Introduction
(Course Duration: 50 minutes)
In this course, you will learn how to grade the proposed sidewalk profiles for an urban roadway design.
Sidewalk terrace and driveway grades typically have constraints to direct drainage runoff, and to satisfy local safety requirements. In an urban roadway design, the variance in the minimum and maximum grades for the sidewalk terrace and driveway is often a primary source of flexibility in the grading design, as it the case in this course. To make the urban roadway design compliant with the design specifications, the sidewalk profiles must be graded to fit within the allowable elevation range, as calculated from the proposed back of curb elevation.
To demonstrate how to grade the proposed sidewalk profiles a common scenario and simple dataset will be used. A setup corridor will be created to determine the allowable elevation envelope for both the inside edge of sidewalk and driveways. The proposed sidewalk profile will then be modeled to fit within the constraints of terrace and driveway grades. The proposed profiles will then be smoothed out and targeted in the proposed corridor model.
This is among 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.
· Leverage a setup corridor to define the allowable sidewalk and driveway elevation
· Grade proposed sidewalk to fit within design constraints
· Incorporate proposed sidewalk profiles into proposed corridor model
· Validate subassembly grades in corridor sections
Model Intersection Sidewalk Ramps Course Introduction
In this course, you will learn how to grade the proposed sidewalk profiles for intersections in an urban roadway design. As is typical in urban road designs, sidewalk ramps are needed at pedestrian crossings. To ensure the sidewalk ramps meet ADA grading requirements, and that the terrace grades fit within the allowable grade range, a proposed sidewalk profile is needed. The proposed sidewalk profiles will need to fit within the allowable elevation envelope, as calculated from the back of curb, and targeted in the proposed corridor model.
To demonstrate how to grade the proposed sidewalk and ramp profiles, a common scenario and simple dataset will be used. To lower the curb height for the sidewalk ramps, a curb cut profile will be created for each curb return alignment. Another setup surface will be created to define the allowable elevation envelope for the proposed sidewalk and ramp elevations, and proposed sidewalk profiles created for each curb return region. The proposed sidewalk profiles will be locked to the primary road edge of pavement and added as targets to the proposed corridor model.
· Create curb cut profiles to model sidewalk ramps in intersections.
· Model a variable width terrace and sidewalk through a curb return region.
· Leverage a setup corridor to define the allowable elevation envelope for proposed sidewalk and ramp profiles.
· Layout a proposed sidewalk and ramp profile to fit within design constraints.
· Completed Urban Roadway Design course “Model Sidewalks and Driveways”.
Make Refinements to Corridor Model Course Introduction
In this course, you will learn how to make refinements to a modeled, urban roadway design. As is typical in all roadway design projects, refinements are needed to produce the best grading solution. For urban roadways, this might mean adjusting the design profile to balance earthwork or address unwanted steep grades. A refinement could require adding a driveway entrance that was missed. Or you may want to refine the surface to make the contours and triangulation look more polished and smooth. This course will address basic refinements you can make to your corridor models to improve your urban roadway designs.
To demonstrate refinements that you can make to a modeled, urban roadway design, a common scenario and simple dataset will be used. To address grading concerns at the intersection the proposed centerline profile will be adjusted. Editing the design profile will trigger a ripple effect on the downstream setup surfaces and grading features. The proposed profiles will be refined to fit within the updated elevation envelopes, and the proposed corridor updated. A new driveway will be added to demonstrate how omitted driveways can be addressed, and a refinement surface will be created to “fine tune” the final grading model.
· Make refinements to the urban roadway proposed profile.
· Refine “out-of-date” proposed profiles.
· Add omitted driveways to the proposed corridor model.
· Leverage a refinement surface to perform final surface edits.
· Completed Urban Roadway Design course “Model Intersection Sidewalk Ramps”.
Retrofit Centerline Profile Course Introduction
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.
· 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
· Knowledge and experience working with Civil 3D
Retrofit Curb Return Profiles Course Introduction
(Course Duration: 70 minutes)
In this course, you will learn how to establish the intersection design profiles for an urban roadway design. The intersection profiles blend the secondary roadways into the primary road and lock the profiles between the roadways to keep the grading model dynamic. The curb returns in the intersections, typically have minimum and maximum grading requirements, which can be addressed using a reverse grade assembly to determine the allowable elevation range for the curb return profiles.
To demonstrate how to retrofit the curb return profiles, a common scenario and simple dataset will be used. The primary roadway grade will be maintained though the intersection, and the secondary roads will be locked to the primary road edge of pavement. 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 curb return profiles within the constraints.
· Leverage a setup surface to bind a primary and secondary roadway
· Lock secondary roadway profiles to primary road profiles
· Use a reverse grade curb return assembly
· Determine the allowable elevation for curb return profiles
· Model the proposed curb return profiles to fit within design constraints
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