NOTES Module 09 Existing and Design Profiles In this module, you learn how to work with profiles in AutoCAD Civil 3D. You create and modify profiles and profile views, edit profile geometry, and use styles and labels to customize the display of the data. You also create profile reports using the Toolbox. Objectives After completing this module, you will be able to: Create a profile using an existing terrain surface. Create a design profile using layout tools. Edit profile geometry. Create and modify profile and profile view styles. Use labels and label styles for profiles and profile views. Create external profile reports in a web browser.AutoCAD Civil 3D 2009 Education Curriculum NOTES 09-2 Notes In this module, you learn about profiles. Existing and design profiles are created, modified, and labeled. It is important to understand how to create and edit profiles using Layout tools. Layout tools are used to insert tangents, curves, PVI’s (Points of Vertical Intersection), and to adjust the final vertical design of a road. After completing the design, you use profile and profile view styles to customize the display of the profile data. You also use profile and profile view label styles, label sets, and band sets to add the necessary labeling. Data for this module resides in the \AutoCAD Civil 3D 2009 Education Curriculum\Module 09 - Existing and Design Profiles\ folder. Student Exercises The following exercises are provided in step-by-step format. Open the Civil 3D program prior to beginning each exercise by double-clicking the Civil 3D icon on your desktop. You working in the Imperial system should use the drawing files beginning with the letter I, while those working in the metric system should use the drawing files beginning with the letter M. You are provided with a drawing for each exercise. The exercises in this module are as follows: 1. Create a Profile Using an Existing Terrain Surface 2. Create a Design Profile Using Layout Tools 3. Edit Profile Geometry 4. Create and Modify Profile and Profile View Styles 5. Use Labels and Label Styles for Profiles and Profile Views 6. Create Profile ReportsModule 09 - Existing and Design Profiles NOTES 09-3 Existing and Design Profiles An existing ground profile is the intersection of a horizontal alignment and an existing surface. Essentially, it is a perpendicular view of the terrain surface sliced along an alignment. An existing ground profile provides excellent visual information for the design engineer developing the proposed vertical alignment of a road. While an existing ground profile shows a perpendicular view of the horizontal alignment cut through the existing surface, a design profile represents the perpendicular view of a horizontal alignment cut through the finished vertical surface following grading and road construction. Where possible, the designer tries to create the proposed vertical alignment as close as possible to the existing ground profile. This process minimizes the amount of earth that needs to be moved. In Civil 3D, an existing profile is referred to as a surface profile, and a design profile is referred to as a layout profile. Profiles can help you visualize the terrain along a route of interest, such as a proposed road, or simply show how the elevation changes across a particular section. These are required components of any road or highway design project and are often useful in reviewing site designs. Profiles are intelligent objects in AutoCAD Civil 3D. Surface profiles and profile views are dynamically linked to horizontal alignments and surfaces. When the horizontal alignment is edited, associated surface profiles update dynamically. If the surface is modified, the surface data and label styles are also updated dynamically. Profile and profile view styles are created to control the display of profile data. Label styles, label sets, and band sets display associated annotation and a descriptive framework for the profile view. Styles that represent the organization or client standards are stored and managed in the drawing template.AutoCAD Civil 3D 2009 Education Curriculum NOTES 09-4 Key Terms Existing Profile An existing profile is the intersection of a horizontal alignment and an existing surface. It is a perpendicular view of the terrain surface sliced along the alignment. In Civil 3D, the existing profile is referred to as a surface profile. Design Profile A design profile is the finished vertical alignment that contains the final vertical tangents and vertical curves for the road. The designer creates the vertical tangents and vertical curves in accordance with standard design criteria for sight and stopping distance and slope. In Civil 3D, the design profile is referred to as the layout profile. Surface Profile Also known as an existing ground profile. Surface profiles are dynamic and react to changes made to the horizontal alignment and the surface. Layout Profile Also known as a design profile. Layout profiles represent the finished design and are nonreactive, or static. Profile View The profile view is the grid object, or plot, that contains the profile data. Surface profiles and layout profiles are displayed in a profile view. Tangent For a profile, a tangent is a straight section of roadway that has a constant slope, or grade. A positive tangent moves upward while a negative tangent moves downward. Vertical Curve A vertical curve connects to tangents. A vertical curve with an incoming tangent grade greater than the outgoing tangent grade is called a crest. A vertical curve with an incoming tangent grade less than the outgoing tangent grade is called a sag. Vertical curves are most often represented with parabolas. Station Stationing is a form of linear referencing of distance along an alignment. A station is a value of distance from the start point added to the starting station value. The base value for imperial stationing is 100 feet, designated as 1+00. The base value for metric stationing is 1000 meters, designated 1+000. Station Elevation Along a profile, station-elevation is a method for identifying the location of a point based on the alignment station and the elevation. PVI Point of Vertical Intersection is the intersection point of two profile tangents, typically marking the center of a symmetrical parabolic vertical curve. BVC Beginning of a Vertical Curve is the transition point from a constant grade line
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