Join Josh Modglin for an in-depth discussion in this video Creating parcels from objects, part of AutoCAD Civil 3D Essential Training.
- [Instructor] So to create parcels to begin with, what we're going to do is work with existing objects and we're going to convert those objects into parcel segments, put them into a site and then of course, Civil 3D will create those parcels for us. So let's go ahead and open up our first exercise here, ParcelFromObjects. And you'll notice there's actually a statement up here of No. What does it mean? Well we're going to see in a minute why this is not the best way to create parcel objects.
In this case, there's two AutoCAD polylines. This one with a closed line here, and this one with a closed line here. So we actually have two lines on top of one another, and we're going to see why that's a bad example in a second. Here we have one polyline, and then a line in the middle that actually separates or demarcates the one polyline into two closed spaces. So we go to our home ribbon, Create Design Panel under Parcel, we're going to choose to Create Parcel from Objects.
When we do, it asks us for the objects to create the parcels from. We're going to select these two objects here, the polyline and the line. I'm going to go ahead and press enter, and it asks us for the site. Now we already have a site created here, but you could easily create another site simply by pressing this button. It asks us for the style of the parcel. Again, remember the parcel style really is more connected to the empty space, but you can also control the segments of the parcel style, and the segments that make up that parcel within that style as well.
Our layers are already defined for us in our object layer settings for our drawing. And even the label for the area for our parcel. We're going to erase the existing polylines. I go ahead and click okay, and you see based upon the layers and the styles, we now have two parcels. Now this could easily be turned into one simply by removing the enclosed space. I can change that parcel at any point simply by moving or changing the segments that make up the parcel.
And notice though, it's always required to have that enclosed space, otherwise Civil 3D automatically removes that parcel. So the key really is to create the enclosed spaces, but it's so dangerous to create enclosed spaces by having lines on top of lines. So really what we have here in Civil 3D's mind, there's three parcels. That's what's really going on in Civil 3D's mind. You have a parcel here, closed polyline.
You have a parcel here, closed polyline. And then you have a zero-space area parcel where these two lines come together. Now Civil 3D is pretty smart software, is going to try to figure out and recognize, well that's not really a parcel, but it's going to start getting confused, and could create a problem in your drawing. So always think of any shared segments that we're working with within Civil 3D, these shared segments don't need to have two lines, just one.
It really makes it easier to draw our parcels. Now we see the power of parcels. We don't create the parcels, we simply provide the segments, put them in the right site, and Civil 3D creates the parcels for us.
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
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