#Autocad land desktop 2009 how to
This tutorial demonstrates how to create a TIN surface, and then add contour, breakline, and boundary data to the surface. Click on a polyline representing your major and another representing your minor contours. Hole – An area defined by a closed shape that delineates a region where the current terrain is ignored and the underlying terrain is utilized.First go into the Grading Properties and deselect the Automatic Surface Creation checkmark. Dialog used to create Corridor, add Template Drops, apply Superelevation and create Surface (3D Model). But if contours are all you can use, then you probably need to adjust the weeding and supplemental factors, so you don't add so much data to the surface definition. Here is one way to create a C3D surface from of them. You can import most CAD drawing formats directly into 18. A recent question on the Civil 3D Forums had me wondering whether it was possible to display ponding water on a Civil 3D surface. Added support for Civil 3D Surfaces, Alignments, and Profiles to Elevation Label, Elevation Label - Lot Line, Spot Elevation, and Label Slope. First thing I would do is ignore the contour all together and get the data that was used to create it in LDT into C3D (if possible).Creating the Existing Ground Data Shortcut Chapter 6 - Creating Civil Design Drawings.Best Practices for Adding Data to a Surface Definition.CADD & CIVIL 3D USER GUIDELINES 4 Chapter 5 - Creating the Existing Ground Surface Here is a screen shot of the improved density and some spike removal. When you add the data back in, the application will have a lot of trouble deciding what should be connected, and what shouldn’t. So now convert the extracted user-defined contours from 2D polylines to 3D Polylines.We may want to alter the contour display in an area, such as a building pad or a detention pond. Insert the drawing that has the contours and explode it.Civil 3D cannot do 4-way intersections with Older USGS elevation formats include Digital Elevation Models (a DEM file represents a 3D-grid surface) and Digital Line Graphs (a DLG file includes 3D elevation contours) if you need to import these older DEM/DLG data into AGTEK, you will need to convert the data to a compatible format using a third-party utility such as those listed below: Next extract the user-defined contour from the surface. 03 - Contours Over Interpolated Ticks This chapter serves two purposes. A ditch is being blown over and slopes are not smooth and even. If no surface is visible after adding all desired point groups. The weeding and supplementing factors is up to you on how tight you want your curve contours to be displayed. Then press OK to get out of the Grading Group Properties window. The result is 20 or so tiny dead spots, that all have to be manually reassembled. When you swap edges, Civil 3D merely changes the way it triangulates the data. You can try going into the Surface Properties -> Definition tab, and change the build properties so that the surface allows crossing breaklines. You simply need to extract the contours as 3D polylines from the surface. This is the first time I have imported a. Then the contours are auto-generated from your model.
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