Join Jeff Bartels for an in-depth discussion in this video Introducing pipe networks, part of Civil 3D Essential Training.
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- If your design requires the installation of sanitary or storm sewer, Civil 3D makes it easy to create dynamic 3D models of these utilities. In this lesson, we'll take our first look at a pipe network. On my screen is a portion of a subdivision design. Let's take a quick tour. First, I have an existing site with an existing street called Maple Street. I also have an existing surface created for this site. Just for a second, let me go to the Prospector tab. I'll open the Surfaces group, and I'll right click on the surface called EG, and I'll go to Surface Properties, and then I'll change the style to Countours 1' and 5' (Background), and I'll click OK.
Now we can see that surface on screen. I also have created three proposed alignments. One's called North Street, another one's called South, and then I've got one called Center Street. If I pan the drawing over, you can see I've created finished grade profiles for those alignments. Let's pan this back. The geometry that we see here for the curb and gutter edge of pavement and sidewalk is actually a corridor. What I've done is created a style that hides all of the assembly insertions. I'm going to press escape. So this shows us that we could use Civil 3D corridors as our plottable geometry.
I'm going to back up and we'll pan this over. This corridor is also used to define the proposed surface between the right of ways. Once again, I'll come back over to the Prospector tab and I'll right click on this surface called Roadways TOP. I'll go to Surface Properties, and I'll change the style to Contours 1' and 5' (Design), and I'll click OK. So now we can see the proposed surface. Now that we've taken a look at the drawing, I'm going to hide these surfaces. Let me select both of them, and I'll go to the Properties palette, and then I'll change their style to No Display.
When I'm finished, I'll press escape to deselect the surfaces. At this point, I'd like to start placing some sanitary sewer along North Street. I'll do that by creating a pipe network. To create a pipe network, we'll come up to the Create Design panel, I'll open the Pipe Networks menu, and I'll choose Pipe Network Creation Tools. Using the dialog box, I can give the pipe network a name. I'm going to call it Sanitary Network. Right here I can give it a description. We'll come down to Network parts list. I'll open the menu and I'll choose Sanitary Sewer.
This represents the collection of structures and pipes that I'll be drawing from to build the pipe network. Right here I can select my object layers for the structures and pipes. I'm going to keep the defaults for right now. Let's come down to Surface name. I'm going to open this and I'll choose Roadways TOP. This surface will assign the rim elevations to the structures. Since I'm going to be placing the sanitary sewer along North Street, I'd like to use that top surface to set the elevations. This way in the event my corridor changes, I can have the rim elevations of the structures update automatically.
Next we'll come down to Alignment name. I'm going to open this up and I'll choose North Street. This will come into play in the event I use station and offset labels. Civil 3D will know which alignment to measure from. Finally, down below, I can assign Structure and Pipe labels as I create the items, or I could label them later. I'm going to do that so for right now I'll leave both of these styles set to none. When finished, I'll come down and click OK. This brings up the Network Layout Tools toolbar. We'll be looking at this a lot more in a little bit. For right now, I'd like to show you two important menus.
This one on the left allows us to select the current structure type and size. Take a look at some of the choices that we have. I'm going to stick with the default, Concentric Structure 48 dia 18 frame 24 cone. This menu on the right allows us to select the current pipe type and size. Once again, we'll keep the default, 8 inch PVC To draw my sanitary network, I'll come down and click this button, Draw Pipes and Structures and I will then zoom in in the drawing, and I'm just going to place these in the parkway.
Let me click and place one here. I'll come down and place another structure here. Note they are automatically connected with the pipe. As I move, we can see the same rubber band effect we see when we draw line segments. Let me place another structure. Really creating a pipe network is a lot like drawing line work. Let me come down and I'll click and place another one here. When I'm finished, I'll press enter. I will then close the toolbar. Let's pan this over. So creating a pipe network is a lot like drawing two-dimensional geometry. Even though this looks like two-dimensional geometry, we're actually creating a 3D model.
Let's take a look. I'll select one of these pipes and one structure. I will then right click and from the menu I'll choose Select Similar. This selects all of the objects. I will then come up and open the Object Viewer. Let's click the southeast hot spots. I will then zoom in, and we can see the 3D model that we created. Let's close the Object Viewer. The pipe network is still selected. Let's say I'd like to display this pipe network in the profile view. Back in the old days we had to draw that manually. Since the design is based on a 3D model, I can simply display it in a profile.
I'll do that by coming up to the Contextual ribbon and I'll choose Draw Parts in Profile. I will then pan the drawing over, and I'll find the North Street profile, and I'll select it, and we can now see the sanitary structures and pipes. Let's do one more thing. I'm going to split the screen. I'll open this leftmost in-canvas menu. I'll go to Viewport Configuration list, and I'll choose Two: Horizontal. In this view on the bottom, I'll center the view on these end three structures. In the view on the top, we'll pan the drawing over, and we'll find those same three structures in plan view.
The nice thing about having these objects tied to a 3D model is, if they change in either view, they will change in all views because it's all viewing the same data. For example, I'm going to select this structure on the end. I will then click to select the grip. I will then move the structure over here, and I'll click to drop it. We can see how the change shows up in the profile. Let me click, and I'll pull it back. When I'm finished, I'll press escape to deselect the structure. Now that we understand some of the basics of a pipe network, I'm going to put my focus in this view on the bottom.
I'll open the in-canvas menu again, and I'll choose Maximize Viewport. When I first started working with pipe networks, I appreciated how easy they were to create, but I had a few questions. For instance, was it possible to increase the number of structures and pipes I had to choose from? Remember, when I created this, there was only just a couple structure types available, and we only had the PVC pipe material. Another question I had was how did Civil 3D determine these pipe inverts and these sumps? They just seemed to be assigned automatically.
Over the next couple lessons, we'll answer these questions by exploring some of the behind-the-scenes work that can be done to give us more control when creating a pipe network.
- Exploring the design data in drawings
- Creating, connecting, and grouping points
- Customizing label styles
- Defining existing ground surfaces
- Designing horizontal alignments
- Controlling alignment properties
- Creating profiles and profile views
- Sharing design data
- Creating and managing parcels
- Building assemblies
- Modeling advanced roadways
- Defining gravity-based pipe and pressure pipe networks
- Creating sections and section views
- Analyzing designs
- Generating plan sheets