If you are specifically looking for the 2014 version, keep in mind:
Finding a "gratis" (free) version of professional CAD software can be risky due to malware on unofficial sites. Here are the legitimate ways to access these tools: AutoCAD 2014 download and install - Autodesk Community civil cad 2014 para autocad gratis
Requiere al menos 4 GB de RAM (8 GB recomendados) y un procesador AMD Athlon 64 o Intel Pentium 4 con soporte EM64T. CADTutor.net Comparativa: CivilCAD vs. Civil 3D Autodesk Student and Educator Software Resources If you are specifically looking for the 2014