The AutoCAD® Civil 3D® 2018.2 Update contains the following new features and enhancements.
Design Efficiency Updates
- Profile layout direction: Draw fixed profile straights and lay out profiles in either a left-to-right or a right-to-left direction when using the Fixed Straight (Two Points) command and the Draw Straights and Draw Straights With Curves commands. Previously these commands required using a left-to-right layout direction.
Left-to-right layout Right-to-left layout (new behaviour) 
For more information, see About Creating Layout Profiles.
- Vertical curves in offset profile slope transition regions: Vertical curves are now created in slope transition regions for offset profiles. Previously, where vertical curves were present in the parent profile, offset profiles were created with straight segments in slope transition regions instead of vertical curves. For more information, see About Creating Offset Profiles.
- Rail Turnouts and Crossings commands: Create and edit rail turnouts and crossovers using the Rail Turnouts and Crossings commands.
- Subassemblies: A set of subassemblies is included in this release, including new subassemblies and subassemblies that were previously included in the AutoCAD Civil 3D 2017 v1 Enhancements release.
Note: After installation, you will need to import the PKT files into a Tool Palette to access them. For more information, see To Add Subassembly PKT Files to a Tool Palette. - Pressure network content: New pressure network content is included in this release.
The following metric unit content is included:
Part Metric_Ductile_Iron Metric_PE (Polyethylene) Metric_PVC (Polyvinyl Chloride) Metric_Steel Elbows x x x x Tees x x x x Couplings x x x x Reducers x x x x Caps x x Valves – Air x x x x Valves – Butterfly x x x x Valves – Check x x x x Valves – Gate x x x x Valves – Globe x x x x Hydrants – Above Ground x x x x Hydrants – Underground x x x x The following imperial unit content is included:
Part Imperial_AWWA_Flanged Imperial_AWWA_HDPE Imperial_AWWA_PVC Imperial_AWWA_Steel Combination Air Valve x x x x Check Valve_ Swing x x x x Plug Valve_ Long Body x x x x Plug Valve _Short Body x x x x Ball Valve_ Metal Seated x x x x Gate Valve_ MJF_ with Bypass x Gate Valve_ MJF_ without Bypass x Gate Valve_ MJxMJ BELL x Gate Valve_ PFS x Hydrant_ 42in_ Bury Depth_ MJ x x x x Hydrant_ 48in_ Bury Depth_ MJ x x x x Hydrant_ 54in_ Bury Depth_ MJ x x x x Hydrant_ 60in_ Bury Depth_ MJ x x x x Hydrant_ 66in_ Bury Depth_ MJ x x x x Hydrant_ 72in_ Bury Depth_ MJ x x x x Pipe x For information about specifying a pressure network catalogue and setting up a parts list, see To Specify the Pressure Network Catalogue and To Work with Pressure Network Parts Lists.
Production Efficiency Updates
- 3D solid crossing appearance control in section views: Control the appearance of 3D solid crossings that use the <Section> style option by modifying the properties of the 3D solid layer. For example, the colour of a 3D solid crossing that uses the <Section> option is now controlled by the colour of the layer associated with the 3D solid rather than by the projection style associated with the solid.
For more information, see About Projection and Crossing Styles for Section Views and To Work With Projection and Crossing Styles for Section Views.
- Multiple object selection when specifying settings for projections and crossings: Change style or level settings for a selection of objects in the Projection and Crossing Output Display Options dialogue box and on the Projections and Crossings tab of the Section View Properties dialogue box. You can select multiple objects using Shift+click or Ctrl+click, and then clicking in one of the selected cells to change the setting for all of the selected objects. For more information, see Projection and Crossing Output Display Options Dialogue Box and Projections and Crossing Tab (Section View Properties Dialogue Box).
Collaboration and Data Exchange
- Autodesk Civil Engineering Data Translator: Translate AutoCAD® Civil 3D® files to files that can be used in Bentley® GEOPAK® and Bentley® InRoads®, and translate GEOPAK and InRoads files to files that can be used in AutoCAD Civil 3D. For more information, see About the Autodesk Civil Engineering Data Translator.