Hy all , I have a road project , I drew all my points , I know how to create a corridor BUT I don;t know for the love of God to create an assembly that can help me afterwards to simulate the road and the quantities for pavement , acostaments , underlayers . Best reqards, Ichim Andrei 

Hello Ichima, I don't know about Civil3D but if it's like AutoCAD 3D I supose that you will have do elaborate some solids and launch the command MASSPROP that will give you informations about those solids, eventually you would have to type F2 to have a better access to the command line.For the main 3D commands on AutoCAD you can eventually see my AutoCAD file here on the site in the CAD/BIM Blocks library : 3D SOLIDS 01.dwgHave a nice day and tell us if this helped or not.