Road design plan

First of all you have to classified your Road, like a motorway, urban road, rural road…, the next step is to see which guide you have to use in your design, and from it you will have all the minimum criteria and specifications like the horizontal and vertical minimal curves and the superelevation,  

Civil 3d and Google earth

If you have this error, and you are using Civil 3d 2012, and you wonder why?This is what happened to me, that because I installed Google earth 7, this option work only with the fifth version of Google earth. and if you are using Civil 3d 2013 the you will not have this option at all.