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Civil Site Design V21.20

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Civil Site Design for Civil 3D, AutoCAD & BricsCAD V21.20.

This readme contains important information regarding the installation and use of Civil Site Design versions as described above.

Civil Site Design is available for:

  • AutoCAD Civil 3D 2015 to AutoCAD Civil 3D 2021
  • AutoCAD 2015 to AutoCAD 2021 including all AutoCAD derivatives
  • BricsCAD V20 (64bit install)
  • Civil Site Design Plus




For BricsCAD V20 users, it is critical that customers ensure they have downloaded and installed the latest version

In an earlier version (BricsCAD v20.2) there were issues with the programmatic inclusion of title blocks in the drawing that contained attribute definitions. These these needed to be inserted using the INSERT tool in order for them to be included in the drawing.


After installing this version and opening a drawing, the CSD data structure may be updated and will not be compatible with Civil Site Design V19.01 or earlier. The drawing file itself (.dwg) is unaffected.

Note: A backup copy of the -Data folder is not made when the data format is updated.


We have found that the software ‘Nahimic’ may prevent Model Viewer from displaying – the installation of Nahimic creates a conflict in Eyeshot (the graphics engine we use in Model Viewer).

If Model Viewer will not open, please check if Nahimic is installed. If so, updating Nahimic may resolve the issue. Uninstalling it will resolve the issue.

Nahimic software provides enhanced audio (typically for gamers) and is commonly installed with gaming laptops. More information about Nahimic can be found here:



You do not need to uninstall any previous versions of Civil Site Design. This installation will install over the top of any previous CSD installation.

If you are upgrading from Civil Site Design V20 or earlier, you will need a V21 license key to continue use beyond the default 30 day evaluation period.

Subscription customers can obtain their V21 license keys, and obtain Home Use Licenses, directly from the CSS Subscription Portal:

An update to the Civil Survey Solutions Network License Manager is required for V21. Please refer to the Installation Guide for more information:


Customers installing this product will required a new V21 license.  Licensing is set for the current user and the activation process is the same (user generates trigger codes, this is emailed to us and we provide an activation code via email).

If you already have Civil Site Design Plus installed, you will need to first uninstall the application in order to install this updated version.

  • Windows 10 method:
    • Open the Start Menu and click Settings
    • In the top search bar type ‘Add or remove programs
    • From the list, select Civil Survey Solutions Civil Site Design v21
    • Click the Uninstall button that appears

Note: Uninstalling the application will not delete your license or remove your Civil Site Design settings.



Replacement to Model Viewer Standalone, Model Viewer: Design Review is a new way of viewing fully rendered Civil Site Design models and object data outside of the CAD platform. For more information, please see the dedicated downloads page:


    • Navigation:
      • Left/Right arrow keys can be used to ‘cycle’ through the pipes (highlight them in order)
      • Double click middle mouse to zoom extents
      • The Zoom and Pan have been rewritten.  Exaggeration is set when a pipe is selected and doesn’t update until another pipe is selected.  You can then use the middle mouse to zoom and pan without changing exaggeration, and you can pan above and below the pipes.
      • Zoom to pipe has been reinstated.
    • Added depth inputs in the Settings for displaying a depth below existing and design surfaces
    • A new Theme button has been added to the Settings
      • Set all display colours and text sizes which are applied immediately in the VGE window
      • Set future controls on exaggeration, increment, default depths and display text
      • Use the Tools menu dropdown to set these as DEFAULT for future jobs
      • Use the File menu to load and save themes
    • Crossing pipes now show as ellipses instead of ‘boxes’ if they are circular
    • The main pipe now shows both the inner and outer dimensions of the pipe
  • General
    • Option to append units to headings in the Volume report
    • Roads VGE zoom/pan toolbar moved to the status bar
    • Button added in roads VGE to change ribbon display type
    • Pipes in VGE and XSect window display light blue
    • Button added to XSect window to hide ribbon
    • Civil Points automatically scale to annotative scale
    • Grid shift files added for transforming civil points between coordinate systems
    • File extension added to Civil Point Formats
    • Pipe networks can have a material applied
    • Added support for GDA 2020 coordinate system
    • Aerial imagery can be downloaded at the highest quality
    • Aerial imagery more accurately positioned
    • Added buffer distance on aerial imagery download (to ensure the surface is covered)
    • Aerial imagery can now be inserted into BricsCAD
    • Improved world file for aerial imagery (contains more transformation information)
    • When downloading imagery or surface data, user can specify starting location point
    • Drive command references the ‘primary’ design

FIXES V21.20

  • General Fixes
    • Crash occurred when exploding Civil Points
    • Issue adding batters to Corridor from kerb returns
    • Issue creating some Assemblies with Corridor export
  • Model Viewer Fixes
    • Reset Model Viewer command
    • Export obj file with rotated aerial imagery
    • Export files with object groups issue resolved
    • Fixed issues related to recording video
    • Crash that occurred when closing/updating Model Viewer whilst animating
    • Fixed issue with search bar when typing in an address for aerial image or surface data


  • Civil 3D Pipe Network Creation Tools
    • Inlet/Outlet type parts are not supported at this time.
    • If there is no match between a Civil Site Design part and a Civil 3D part, no pipes or structures will be created
    • Pipe Data Source is not managed at the time of creating the profile views – the first network will automatically be assigned. Pipe Data source needs to be manually set by the user post creation of the profile views
    • Alignments created by the software will not trace curved pipes – geometry will consist of a straight line between structures.
    • Selecting surface profiles at the time of creating the Civil 3D pipe network is a once off assignment. This cannot be changed by using Manage Network and updating. The Profiles will need to be deleted and recreated. To do this:
      • Delete all Profiles for the Pipe Network
      • Use the Manage Networks to Update the Pipe Network with the desired surface.
    • If the Civil 3D pipe network is created and then curved pipe/s are applied in Civil Site Design (replacing previously straight line pipes) the user will need to delete that Civil 3D pipe in the drawing and run the Sync Networks command to create the curved pipe.
  • Cul-de-sac creation
    • It is possible that upon first creation of a Cul-de-sac, the centre line string of the incoming road may extend through the cul-de-sacs and result in crossing strings in Totalmodel.  Reviewing the Cul-de-sac geometry and string creation settings and then Updating the string should resolve the issue.
  • Knuckle creation: Widening Options
    • Using the widening option of Move the ‘Match to Code’ may result in unexpected elevation changes at the start/end of the knuckle if the adjacent road elevations are adjusted.
      • If this widening option is desired it is recommended instead to select “None” and then use Variations and Batter overrides on the Road to associate the EB code to the knuckle string.  Section edits over the knuckle range would include: Variation > Set Code Offsets &/or Levels to String, then Variation > Delete All Sections Outside Selected Codes to remove codes outside of the EB code, then Batters > Slope Batters (set the side with the knuckle to have blank entries for cut/fill).
  • Export Corridor
    • Regions are created to support changes in default widths on the template – this is deliberate to help speed up the corridor (by reducing the number of parameter overrides)
    • It is recommended that when exporting a corridor that includes a cul-de-sac with offset geometry, the Apply targets to cul-de-sac settings be un-ticked.  Applying targets to cul-de-sacs in this case will likely result in errors in the exported corridor.  Users can review the Corridor Settings to change this option and then run Sync Corridors to update the corridor in the drawing.
  • Exchange Settings
    • If Subassembly Composer was used to create the desired subassembly, it is recommended to use the Import PKT option when selecting the subassembly, and not selecting it from the Tool Palette it may have been added to. If the subassembly doesn’t live in a Catalog (even though it may be in a tool palette) it will not work in the corridor.

It is likely that a message will display when using Select Subassembly, about providing read/write access to certain folders. The software is trying to access all folders that contain subassembly catalogs and finding issue – follow the instructions in the message to resolve the issue. This does not stop you from exporting corridors, but may limit the list of subassemblies you can use.