How to Create a Ground to Grid Custom Coordinate System in a Lambert Conic Projection State Plane
Alan Gilbert of Autodesk shows how to employ the MAPCSLIBRARY command to copy and create a Ground to Grid coordinate system
in a State Plane that employs a Lambert Conformal Conic projection (longer in east-west direction).
See the link below for the previous video for State Plane built with a Transverse Mercator projection (longer in north-south direction).
See the entire video series Civil 3D Grid to Ground
with the custom coordinate system built for Transverse Mercator projection State Planes
mentioned in the video above.