Autocad civil 3d hec ras export

Here is a screenshot of the spreadsheet with button to execute macro:. These text files are named with a ". Example drawings and export files are available. Note scroll bar:. In the drawing above, the stream centerline has been drawn from downstream to upstream.

Note that the stationing starts from zero at the downstream end good for RAS. The cross-sections can be drawn in any order and any direction. Was going to try and simplify the alignment and see if that makes a difference.

Also check that the sample lines are associated with the surface. I switched surfaces since one XS was outside of the surface extents and was still getting 0 kb geo file. After associating the sample lines with the new surface file it worked. Notice: updates available for Apache Log4j vulnerabilities. See the security advisory on the Autodesk Trust Center for more information.

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Embed Size px x x x x Intended for intermediate to advanced AutoCAD Civil3D users, this tutorial is designed to show land development professionals techniques and nuances in extracting detailed hydraulic floodplain models from a LiDAR terrain.

Carter, a project manager in Halffs Austin Water Resources Department, has been with the firm since and has more than 14 years of experience in the design of drainage, stream reclamation, and restoration projects. For the past 14 years, Mr. Carter's experience has concentrated on evaluating and designing drainage facilities necessary to protect infrastructure from flooding and erosion.

Building an existing ground terrain model 2. Resources: To complete this tutorial, it is necessary obtain and install the following programs. Step 1: Building an Existing Ground Terrain Model To get the most accurate floodplain model and delineation, it is necessary to produce the most accurate surface model possible.

For this tutorial, we will create an existing ground surface from a LiDAR terrain model. Create an existing ground surface from LiDAR 1. Make sure that you select an appropriate directory for the point cloud database.

Processing will be performed in the background and will take between 3 and 8 minutes, depending on the speed of your machine. Select apply and OK. Select the "Window" option and click the "Define Region in Drawing.. Draw a rectangle at , to , and select finish. You should see a surface similar to the one shown below. Define stream centerline as a Civil3D alignment. Name it "RiverCL" and make sure the "Add curves between tangents" is unchecked.

Draw your desired cross sections with the polyline tool. Make sure that a. The coss sections cross the RiverCL alignment once and only once.