Right-click on any palette tab or empty space and select . Name it something distinct, like Custom Subassemblies .
Ensure your path points to a secure, permanent folder location. Moving the PKT file later will break the tool link. Updating and Refreshing PKT Files in Active Projects
Right-click on the palette title bar and select "New Palette." Name it (e.g., "Custom Subassemblies"). civil 3d subassembly pkt download updated
Right-click in the empty space of the new palette and select Import Subassemblies .
Browse to the location of your downloaded .pkt file. Right-click on any palette tab or empty space and select
Use a simple PowerShell script to query file version of all .pkt files and compare against a known‑good list.
Most state DOTs have a GIS/BIM support email . Send your Civil 3D version number and the exact subassembly name (e.g., FDOT_TurnLane_TypeB.pkt ). They often provide an updated file within 5 business days. Moving the PKT file later will break the tool link
If you have ever felt limited by the "out-of-the-box" subassemblies in
Updated Civil 3D Subassembly PKT Download Repository