AutoCAD Civil 3D software is a Building Information Modeling (BIM) solution for civil engineering design and documentation. Civil 3D is built for civil engineers, drafters, designers, and technicians working on transportation, land development, and water projects. Stay coordinated and explore design options, analyze project performance, and deliver more consistent, higher-quality documentation—all within a familiar AutoCAD software environment. AutoCAD Civil 3D 2013 civil engineering software extends the value of your model with new workflows and productivity tools for civil infrastructure. With a focus on optimizing performance, the new features offer pressure pipe functionality, improved survey, base map creation, and new rail track design features. And, a host of transportation features have been enhanced, including corridor composition workflows, 3D navigation and interrogation, and surface boundary definition. Streamline your civil engineering projects with AutoCAD Civil 3D software.