Autodesk CIVIL3D Tutorial - Page 160
Exercise 1: Querying Survey Data, Specify the survey database settings
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■ Using the network least squares adjustment method. Each method produces slightly different results. The standard compass rule adjustment method adjusts the traverse loop and sideshots. The least squares method adjusts each of the observations so that the sum of the residuals is at a minimum. NOTE Before performing the steps in this tutorial, you must have already created the survey database Survey 1 and imported the field book file Survey-1.fbk. For more information, see the Survey Setup (page 129) and Importing and Viewing Survey Data (page 144) tutorials. For more information, see the AutoCAD Civil 3D Help topic Survey Analysis and Output. Exercise 1: Querying Survey Data In this exercise, you will use the Survey Command Window to perform a query on the survey data. You will use the Inverse Points command to determine the direction and distance between two points. For more information, see the AutoCAD Civil 3D Help topic Survey Command Window. This exercise continues from the Importing and Viewing Survey Data (page 144) tutorial. Specify the survey database settings 1 Open Survey-3.dwg, which is located in the tutorial drawings folder (page 819) This drawing contains the survey network that was created in the Importing Field-Coded Survey Data (page 136) exercise. 2 In Toolspace, on the Survey tab, expand the Survey Databases collection. 3 If the database Survey 1 is not open (that is, it is not displayed with a next to it), right-click and click Open For Edit. NOTE By default, to save on resource usage, when you start AutoCAD Civil 3D, all survey databases are displayed in a closed state. 148 | Chapter 6 Survey Tutorials
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