AUGIWorld Magazine - March/April 2008 - (Page 25) A new “Simplify Surface” command can be found under “Surfaces > Edit Surface > Simplify Surface.” Surfaces can now be simplified using either the “Edge Contraction” or “Point Removal” methods. In essence the edge contraction method focuses more on the actual TIN, whereas the point removal method looks at elevation deviation between points. Figure 3: Weed out extraneous points using the Simplify Surface command. I tried this command dustrial business park. Needing topogra- on my surface containing 3.5 million points, phy for the 1,000+ acre site and surround- and it works well using the point removal ing area for supporting road projects, we method. Conversely, the edge contraction opted to have the site flown using LIDAR. method doesn’t seem as reliable on Civil For those unfamiliar with LIDAR, it cre- 3D 2009 Beta 1 (current release at time of ates a massive point cloud—3.6 million publication). Similar functions have also points in my case. Needless to say, all 3.6 been introduced for breaklines, which can million points probably aren’t needed, but now have a “Weeding Factor” applied. Especially helpful for designers working until now we haven’t had a real tool to weed to balance their sites is an all new “Expanout extraneous points within a surface. sion and Compaction Factor” feature built into volume surfaces. Both expansion and compaction factors can be specified by the user. The result is a cut/fill volume automatically adjusted for your sites soil conditions. Not all PDF and DWF Files are Created Equal Wilhome.dwg converted to PDF at 300 DPI For full test results visit: http://www.cadzation.com AutoCAD 2008 (412 kb) Acrobat 8.1 (151 kb) AcroPlot Pro (138 kb) TM ® ® higher quality and smaller size PDF files. Input Formats AcroPlot Pro consistently creates TM Aside from a couple of new layout options in Civil 3D Figure 4: Automatically calculate Expansion and Compaction Factors. 2008, the last major new Alignment feature was in 2007 with the site-less alignment. AutoCAD Civil 3D 2009 introduces a feature that I personally have wanted for some time now—Criteria-Based Design. In essence, users can define their own design parameters or use the AASHTO tables preloaded with the software. A new “Design Criteria” tab is included within both the “Create Alignment” and “Alignment Properties” dialogs. With Criteria-Based Design enabled, Civil 3D will continuously check to ensure your alignment geometry meets the selected standards (AASHTO). Whenever your alignment violates Figure 5: Criteria-Based Design provides instant feedthese standards, Civil 3D draws a large back per AASHTO standards. M a r/A p r 2 0 0 8 Alignments and profiles AutoCAD 2000 - 2008 Compatible Batch Creation of PDF, DWF, or Images Automatic Bookmark Creation Custom File Naming Options Create a PDF from any Windows Application Try it free for 30 days. Output Formats Corporate Headquarters USA 518 South Route 31 Suite 200 McHenry, IL 60050 847.973.9460 Main 866.845.6881 US Toll Free AcroPlot Pro is a trademark of CADzation. All other band names, product names, or trademarks are property of their respective owners. Copyright © 2007 CADzation. All rights reserved. r rv 25 http://www.cadzation.com
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