GeoCivil is an interesting blog oriented to the use of CAD / GIS tools in the area of Civil Engineering. Its author, a countryman from El Salvador is a good example of the orientation that the traditional classrooms have had towards -cases- online learning communities; No doubt a milestone that thanks to global connectivity is a good starting point for the democratization of knowledge.
In GeoCivil Predominates the use of AutoDesk Civil 3D that is spoken in many articles, both manuals and tricks to do things. Additionally complementary programs of AutoDesk that do or do similar things like Land Desktop and AutoCAD Map.
I leave you three links to get stuck, go there and add it to your feed reader.
The article shows how to load a command made in AutoLisp, using a routine that the author did to calculate and label areas not necessarily closed with boundary.
This explains how to download data from an Etrex GPS to AutoCAD, using the MapSource program.
Here he brings us a video of how to split a plot that has the shape of "L" respecting a specific area for a lot. Interesting answer based on a question from the Augi community, when I was alive.
And to culminate, here two more articles regarding the handling of topographic data with Civil 3D:
I take advantage of the traffic on a Monday, which by the way is usually very good, to promote this initiative and leave it on the list of blogs I recommend. If what they want is to learn from someone who dominates Civil3D, without a doubt GeoCivil is the place.