Definition: Civil Engineering is the science that deals with the design, construction and maintenance of structures and infrastructures that are built using materials such as concrete, steel, wood, rubber etc. The field includes a wide range of disciplines including civil engineering, environmental engineering and geotechnical engineering. A Civil Engineer's job involves designing and building new infrastructure and structures in order to provide for the needs of society. They use their knowledge of mathematics and science to ensure that construction projects are built safely, effectively and economically. This may include designing roads, bridges, buildings, dams, water treatment plants or any other type of structure that can be constructed. The word "Civil Engineering" is a technical term that refers to the process of studying and designing structures made from materials such as concrete, steel, wood, rubber etc.