Civil engineering is concerned with creative use of engineering principles and science to shape and improve our lives and our environment. Civil engineers are involved in seeing major infrastructure projects through from design to construction and completion. Civil engineers design, build, maintain and manage roads, railways, dams, buildings, airports, hospitals, schools, harbours and sports stadia, offshore installations, subsea systems and renewable energy facilities. They design water supply and water treatment systems and river management, flood and coastal protection schemes.