This technique includes a tool that is within the UK and Ireland and Benelux country kits for AutoCAD Civil 3D 2016.
It shows the technique of publishing clean 3D strings for use with survey equipment and machine control guidance technology and removes the additional data that Civil 3D contains which maybe more than the contractor and site survey engineer need to receive.
Kudo points for my colleague Peter Ingels who wrote this tool
/Jack Strongitharm