Civil engineering is the division of engineering concerned with the building, designing, planning, and maintenance of the material and naturally built surroundings. It is one of the oldest and largest branches of engineering. Civil Engineers are professionally responsible for overseeing design and construction of industrial plant buildings, transmission towers/lines, waterworks, river navigation, airport runways, skyscrapers, power plants, irrigation canals, traffic control infrastructure, dams, shipping canals, bridges, rail-roads, sewers and highways.