One Model. One Change. Multiple Updates. All Automatic.
  Building information modeling (BIM) is an integrated process for exploring a project's key physical and functional characteristics digitally-before it's built. AutoCAD Civil 3D software is Autodesk's building information modeling solution for civil engineering. The software creates coordinated, data-rich models that enable you to conduct analysis from the earliest stages of design; better visualize and simulate real-world appearance, performance, and cost; and document designs more accurately.<br />
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  AutoCAD Civil 3D produces a single model, with intelligent and dynamic data, enabling you to more quickly make a design change at any stage of the process. Make better-informed decisions and choose design alternatives based on analytical and performance results. More quickly and efficiently produce visualizations that remain in sync with design changes as they are made. The model automatically reflects any changes to drafting and annotation throughout the project.
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  Deliver More Innovative Project Solutions<br />
  AutoCAD Civil 3D offers a better way of designing, analyzing, and documenting civil engineering projects.<br />
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  AutoCAD&reg; Civil 3D&reg; software enables you to deliver  higher-quality transportation, land development,  and environmental engineering projects faster.  The software's purpose-built tools support building  information modeling (BIM) processes and help  reduce the time it takes to design, analyze, and  implement changes. The result is that you can  evaluate more what-if scenarios and optimize  project performance.  Civil 3D software's tools for surveying and design help  streamline project workflows by automating timeconsuming  tasks. <br />
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  <strong>Surveying</strong><br />
  Survey functionality is fully integrated in Civil 3D, so you have a more consistent environment for all tasks, including direct import of raw survey data, leastsquares adjustment, editing of survey observations, and automated creation of survey figures and surfaces. You can create and edit survey figure vertices interactively, and identify and edit crossing breaklines to avoid potential issues, resulting in points, survey figures, and surfaces that can be used throughout the project.<br />
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  <strong>Corridor Modeling</strong><br />
  Corridor modeling combines horizontal and vertical geometry with customizable cross sectional components to create a parametrically defined, dynamic 3D model of roads and other transportation systems. Use the included subassemblies-ranging from travel lanes, sidewalks, and ditches to complex lane components-or create your own based on a design standard. The model can be easily modified via visual interaction or by changing input parameters 
  that define the roadway typical section. Unique characteristics of each subassembly allow the 3D model to target known features. 