About model and data exchange with 3rd party solutions: Revit, Solibri, dRofus, Bluebeam, structural analysis solutions, and IFC, BCF and DXF/DWG-based exchange, etc.
I have received a LandXML file from the Civil Engineer for the road and sidewalks surrounding a project my office is working on. Is there a way to import that information into ArchiCad for use in creating my site mesh?
You can try the Place Mesh from Surveyors Data... command (you may ned to add it to your Work Environment). There is some information about the command and the file format needed here: Making mesh from map and text values (imported from dwg)