Pipe DesignObjectivesNotes to InstructorStudent ExercisesPipe DesignKey TermsQuestionsAnswersModule SummaryNOTES Module 13 Pipe Design In this module, students learn how to design a storm sewer pipe network in AutoCAD Civil 3D. Objectives After completing this module, students will be able to: Create a top surface for pipe network design. Create a storm sewer parts list for the pipe network. Work with pipe and structure rules. Layout pipe network. Draw pipes in profile view and edit pipe network. Label pipes in plan and profile. Create pipe data tables and export pipe network to Land XML.AutoCAD Civil 3D 2008 Education Curriculum NOTES Notes to Instructor Data for this module resides in the \AutoCAD Civil 3D 2008 Education Curriculum\Module 13 – Pipe Design\ folder. Student Exercises The following exercises are provided in step-by-step format. Open the AutoCAD Civil 3D program prior to beginning the lesson by double-clicking the Civil 3D icon on the desktop. Students working in the Imperial system should use the drawing files beginning with an I, while those working in the metric system should use the drawing files beginning with an M. Students are provided with a drawing for each exercise in the lesson. The exercises in this module are as follows: 1. Create Top Surface for Pipe Network Design 2. Create a Storm Sewer Parts List for the Pipe Network 3. Work with Pipe and Structure Rules 4. Layout Pipe Network 5. Draw Pipes in Profile View and Edit Pipe Network 6. Label Pipes in Plan and Profile 7. Create Pipe Data Tables and Export Pipe Network to LandXML 13-2Module 13 - Pipe Design NOTES Pipe Design Pipe design is an integral part of subdivision design projects. Pipes are used for the storm sewer, sanitary sewers, and water distribution systems in a subdivision. Manhole structure rim elevations and pipe invert elevations are calculated based on meeting a minimum depth and slope criteria. These are usually indicated in the engineering specifications for the jurisdiction or municipality. The minimum depth is calculated from a surface. For new subdivision design projects, the surface is the finished design surface under which the pipe network will run. Students begin this lesson by creating a surface by combining the top surfaces of the roads in the subdivision. A pipe network is a collection of structures and pipes. For a storm sewer system the structures are manholes and catch basins. The Civil 3D catalog stores all the possible pipe and structure shapes, materials, and dimensions. Before students create the pipe network, students set up a parts list that contains the specific pipes and structures that students would use on a regular basis. This makes it easier to select the pipes and structures when students create the pipe network. The pipes in a Storm Sewer parts list are shown in the following illustration. The parts list also specifies the styles that are used to display the pipes. 13-3AutoCAD Civil 3D 2008 Education Curriculum NOTES Pipe networks can be created by either selecting objects or using the Pipe Layout tools. When you select objects, you can select 3D polylines and Civil 3D will create the inverts and assign elevations from the vertex elevations. The Pipe Layout tools offer an interactive set of tools to select and place pipes and structures in plan view. After students create the pipe network in plan view, students draw the pipes in the profile view. There are many ways to edit pipe networks. You can edit the data in a table or you can edit the data graphically. When you move a structure in plan view, the attached pipes also move with the structure. Pipes drawn in the profile also update automatically. You can label pipe data in both plan and profile views. Pipes labels styles are used to label pipes and structure label styles are used to label structures. 13-4Module 13 - Pipe Design NOTES Pipe and structure data can also be created in tables. These are useful for communicating the engineering details of a pipe network to a contractor. You can also export pipe data to a LandXML file, which can be uploaded to a data collector for construction staking or imported to another drawing to show just the pipe network. Key Terms Top Surface The top surface is a surface that represents the finished design grade. A top surface representing the finished design grades in a subdivision is useful when creating pipe networks. Manhole rim elevations and pipe invert elevations are calculated form the top surface based on minimum depth and slope criteria. LandXML LandXML is a data schema that supports civil engineering data. LandXML is used to transfer civil engineering between applications and amongst designers and surveyors. Pipe Network Catalog Pipes and structures have different dimensions, materials, shapes, and configurations. The Pipe Network Catalog is external to the drawing and contains all possible structure and pipe types. Parts List The parts list is set up in the drawing template and contains the just the structures and pipes you use in a pipe network. Parts lists are useful for organizing pipe network parts. You create a separate parts list for storm sewers, sanitary sewers, and watermains. Rim Elevation The rim elevation is the design elevation for the top of the manhole. The rim elevation is usually determined from a surface that represents the final 13-5AutoCAD Civil 3D 2008 Education Curriculum NOTES design grade. Invert Elevation The invert elevation is the elevation of the bottom of the pipe at the manhole locations. Each manhole typically has an entering pipe with an invert in elevation and an existing pipe with an invert out elevation. Transparent Commands Transparent commands are available on the Transparent Commands toolbar and are used to issue other commands from within a current command. They are typically used to select locations relative to other Civil 3D objects. Pipe Style The pipe style controls the display of the pipe in plan, profile, and cross section. Structure Style The structure style controls the display of the pipe in plan, profile, and cross section. Part Rules Pipe and structure part rules set the initial engineering details when a pipe network is created. They also affect how the pipe network parts behave when they are moved or edited. 13-6Module 13 - Pipe Design NOTES EXERCISE 1: CREATE A TOP SURFACE FOR PIPE NETWORK DESIGN To create a
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