Civil 3D is a civil engineering design and documentation software program that allows users to efficiently produce high-quality drawings and models. Built on Autodesk's AutoCAD platform, it offers many powerful features designed specifically for civil engineers, such as tools for surveying, site planning, road design, sewer and water design, and traffic analysis. Civil 3D also includes an extensive library of standard objects such as pipes, manholes, and sumps that can be easily inserted into drawings. In addition, users can create their own custom objects and save them to the library for future use. With its easy-to-use interface and powerful features, Civil 3D has quickly become the software of choice for many civil engineering companies.