In this exercise, you will create the layout profile. Typically, this profile is used to show the elevations along a proposed road surface or a finished grade.
The layout profile is similar to a horizontal alignment, in that it is constructed of straight tangents with optional curves placed where the tangents intersect. These tangents and curves on a layout profile are located in the vertical plane and the intersection points are called points of vertical intersection (PVI).
This exercise continues from the Using Surface Profiles tutorial.
Hide the offset profiles
The Profiles tab displays all existing profiles for a given horizontal alignment, both surface profiles and layout profiles. You can use the Draw check boxes to specify which profiles to display in the profile view.
Further exploration: You can permanently delete a profile by selecting it in the drawing (or in Toolspace) and pressing the Delete key. If you delete a profile, it is removed from all profile views, the list of profiles in the Profile View Properties dialog box, and Toolspace. To restore a deleted surface profile, create a new one. The new profile is displayed in any applicable profile views, and can be edited in the Profile View Properties dialog box.
To continue with this exercise, ensure that the centerline profile is visible in profile view PV- (1).
Specify the profile creation settings
Turn off Object Snap (OSNAP).
For more details about geometry point labels, see the Adding Labels in Groups tutorial exercise.
The options on this tab are used only if you want to ensure that the profile design meets specified design criteria. You will not apply design criteria to the profile in this exercise. You will learn how to use the design criteria feature in the Designing a Profile that Refers to Local Standards tutorial.
Draw the layout profile
Notice that you can select one of three curve types and specify parameters for each type.
You are now ready to draw the layout profile by clicking in the drawing at the proposed locations of PVIs. At each PVI, the application inserts a curve. To be realistic, your line should follow the general profile of the surface centerline. However, it can cut across steep hills and valleys to outline a smoother road surface.
To continue this tutorial, go to Exercise 2: Editing a Layout Profile.