PointsObjectivesNotesStudent ExercisesPointsKey TermsQuestionsAnswersModule SummaryNOTES Module 05 Points In this module, you learn how to work with points in AutoCAD Civil 3D. Points are single locations in space with attributes such as point number, northing, easting, elevation, and description. Civil 3D points are represented by point objects. There are other types of points in Civil 3D. A few examples include Land Desktop points and AutoCAD points. Points are one of the most fundamental elements in a site development project. They can be used to represent existing conditions and proposed construction locations. Point data that represents existing conditions is usually created from survey data files. Points used for construction are created by engineers and construction personnel. Once a design is completed, engineers extract point data from the design and then send this to the field for construction staking. Objectives After completing this module, you will be able to: Import points to AutoCAD Civil 3D from an external text file Assign point styles and point label styles using the description key editor. Create points using manual input methods. Organize points by creating point groups. Edit point data in a table and graphically. Control the graphical display of point data. Create a point table that shows point data.AutoCAD Civil 3D 2008 Education Curriculum NOTES Notes Data for this module resides in the \AutoCAD C3D 2008 Education Curriculum\Module 05-Points\ folder. It is assumed that you have already completed Module 2, which discusses point styles and point label styles. Student Exercises The following exercises are provided in step-by-step format. Open the Civil 3D program prior to beginning the lesson by double-clicking the Civil 3D icon on your desktop. You 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. You are provided with a drawing for each exercise in the lesson. You are also provided with a text file called I_Points.txt (M_Points.txt) containing point data. The exercises in this module are as follows: 1. Import Points from Text File 2. Create Description Keys 3. Create Points Manually 4. Create Point Groups 5. Edit Point Data in a Table and Graphically 6. Use Grips to Control Graphical Point Display 7. Create a Point Table 05-2Module 05 - Points NOTES Points Points are fundamental for civil engineering planning, design, and construction projects. In common terms, a point represents a singular location in space. It is usually characterized with an X and Y (easting and northing) coordinate pair in two-dimensional (2D) space, and an X, Y, and Z (easting, northing, and elevation) coordinate triplet in three-dimensional (3D) space. Points are used throughout all phases of a site development project. During the topographic survey, points are used to represent survey sideshot observations of existing conditions. The points you work with in Module 05 are existing survey points. Points are also used during the design process. Engineers often create points to represent finished design elevations. These points are then connected to create a plan showing the proposed design. Design points can also be used to created finished design surface models. For example, an engineer may create points to represent the proposed grading scenario for a subdivision design project. Finally, points are used during the construction phase of a project. Points created during the design are uploaded to GPS and Total Station survey equipment, and used for construction staking. There are a few ways to represent points in AutoCAD Civil 3D. 1) AutoCAD Points 2) Land Desktop Points 3) AutoCAD Civil 3D Point Objects The AutoCAD point is a singular AutoCAD entity with no intelligence. Inherent properties of an AutoCAD point entity are the X, Y, and Z coordinate values. AutoCAD points can be used to create surface models if they have a representative Z insertion coordinate. Land Desktop is the predecessor to Civil 3D. Land Desktop points are point objects and can be used in Civil 3D if necessary. The most common way to represent a point in Civil 3D is the point object. The point object is an intelligent object with the following properties: Number Description Elevation 05-3AutoCAD Civil 3D 2008 Education Curriculum NOTES Northing Easting Point objects are as shown: The Civil 3D point object consists of a marker and a label. The display of the marker is controlled with a point marker style. In this illustration, you can see how different marker styles can be used to show different types of points. The display of the label is controlled with a point label style. Different label styles can be used to show specific point data. Key Terms Point A point is a singular location in space. A 2D point is a location on a plane and identified with an X,Y coordinate pair. A 3D point adds an elevation coordinate and is identified with an X, Y, and Z coordinate triplet. Points are used to represent existing and proposed features. Point Group A point group is a collection of similar points in Civil 3D. Point groups can be created using both inclusion and exclusion criteria. You can create point groups based on point number range, descriptions, graphical selection, and elevation ranges. Point groups are useful for manipulating large groups of points with a single edit. You can assign point styles and point label styles to point groups. Point groups are required for surface modeling. Point Style The point style controls the display of the point node. You can use AutoCAD blocks to create customized point styles for different types of points. Point Label Style The point label style controls the display of the point label. You can create different point label styles to show different types of point data. Raw Description The raw description is the description a surveyor assigns to a point in the field. Raw descriptions are abbreviated alpha or numeric descriptions. Surveyors 05-4Module 05 - Points NOTES prefer these types of descriptions because it simplifies the actual entry of the description in the field. Full Description The full description is an alternative point description that is assigned to a point. The full description expands on
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