Join Josh Modglin for an in-depth discussion in this video Corridor targeting, part of AutoCAD Civil 3D Essential Training.
- [Instructor] In our last exercise, we created a very simple corridor. But we also were introduced to targeting as we were able to take our sub-assembly for daylighting and tying it in, or having it target a specific surface. Let's take another look at targeting from a different perspective. Let's go open up our exercise file, 08_05_CorrTargets. And what we're going to do is not target a surface in this case, but we're going to target a horizontal element.
I notice here that we have drawn in our drawing a little bit of a drop-off or additional lane as you can see. So we have a taper at the beginning here. And we have a taper at the end. The alignment is heading from the left to the right. And so that was drawn in with AutoCAD. We see the edge of our travel way here, in the curb lines, drawn in with just regular AutoCAD lines. And what we're going to do is we're going to take advantage of that and we're going to stretch our lane sub-assembly to follow that path.
To do that, we're going to target. So let's go ahead and select our corridor, as we're going to be editing our corridor. From the contextual ribbon, under the Modify Corridor panel, we're going to choose Corridor Properties. Corridor Properties provides us information such as the information tab, which is the same on all Civil 3D objects. Parameters, which provides us a list of the actual creation of the corridor. So from there, we see the horizontal and vertical controls for our linear path.
That defines the baseline. And then within the baseline, we have different regions. Each region within the baseline has a start station and an end station, and can have a specific assembly applied to it. So even along a corridor, we can have different assemblies applied, having a start station and end station that adjust. We can have the same assembly applied to the same station.
So we would have to make sure those start stations and end stations line up. In addition, for each region, we have the frequency that can be used to apply our assembly to that region. What we're going to look at, though, is the column called Target. I'm going to click on the three dots for this region here and open it up. Here's the different types of targeting that you can use within Civil 3D. We already targeted a surface, that was really easy.
And so depending on the sub-assembly, will make a difference on what we can target, or even if we can target. So in this case with our DaylightGeneral, we targeted the surface. What we're going to do with our lanes is we're going to target a width. Remember, the alignment goes from left to right, so what we're stretching is the right lane. And so I'm going to choose the object that I'm going to be targeting. Because it's a width, we simply need a horizontal object.
So that could be an alignment, or it can be a regular polyline survey figure that you can create or a feature line, which we'll cover later. We're going to select that from the drawing. And simply select the lighter magenta or purple line that we have along that taper that we talked about. I'm going to go ahead and press Enter. And it's added to the list here of the different entities we're going to target. I'm going to go ahead and click OK. Because I'm not adding a slope or elevation target to it, it won't change a slope.
It will simply take the lane and apply default 2% slope over a larger distance. Instead of just 12 feet, in this case it'll go 24 feet at 2%. Go ahead and click OK, click OK, yes, I want to rebuild my corridor so I'm going to just check that box so I don't see it again. Anytime I make a change, of course, you'd want to rebuild. And I hit Escape and regenerate the drawing. And you can see how it cleanly tapers and stretches the lane.
So we can use targeting, again, in three different ways. We can target a surface. Usually the sub-assemblies that target a surface are connected to daylighting. We can target a width. Usually a width is connected to a lane, a sidewalk, or some other means there where you're stretching width. Now you can even target an elevation that can be controlled. And, again, that goes back to a lane or some other means that you may be targeting in elevation, which could be a profile or a 3D polyline in some way, even a feature line, which we'll talk about later.
So we take advantage of those targets to give us a clean taper instead of applying a different assembly and having a different width. Now we just use the target so that we have the width go from 12 to 24 in a clean taper using that targeting.
This course gets you up and running with AutoCAD Civil 3D. First, instructor Josh Modglin shows how to model a surface, lay out parcels, and design geometry, including the making of horizontal alignments and vertical profiles. Next, Josh demonstrates how to create corridors, cross sections, pipe networks, and pressure networks. Then, he covers working with feature lines and grading objects, and how to share your data. He wraps up by providing an overview of plan production tools.
- Navigating the Civil 3D interface
- Using point groups and description keys
- Importing survey data
- Managing figures
- Creating and analyzing surfaces
- Creating parcels
- Working with alignments
- Working with profiles and profile views
- Working with assemblies and subassemblies
- Creating Basic and Advanced Corridors
- Using an Intersection Object
- Making sample lines, cross sections, and section views
- Creating a pipe network
- Understanding pressure parts
- Creating and editing feature lines
- Creating and editing grading objects
- Sharing and referencing data
Skill Level Beginner
Some of the exercise files do not properly function.
This course was built to work with the latest release of AutoCAD Civil 3D. If you are not running AutoCAD Civil 3D 2018 there are some exercise files that will not work for you.
AutoCAD Civil 3D: Designing Residential Projectswith Eric Chappell3h 11m Intermediate
AutoCAD Civil 3D: Designing Gravity Pipe Systemswith Eric Chappell3h 33m Intermediate
1. What Is Civil 3D?
What is Civil 3D?4m 43s
2. Civil 3D Interface
3. Establishing Existing Conditions
4. Modeling a Surface
5. Layout of Parcels
6. Design Horizontal Geometry: Alignments
7. Designing Vertical Geometry: Profiles
8. Civil 3D Corridors
10. Gravity Pipe Networks
11. Pressure Part Networks
12. Feature Lines
13. Grading Objects
14. Share Your Data
15. Plan Production Tools
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.Cancel
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.