Civil Engineering is concerned with the planning, design, construction and maintenance of the built environment. It encompasses minor and major structures, ranging from drainage systems, houses, commercial buildings, roads and bridges to multi-storey buildings and water and wastewater treatment facilities. The work of civil engineers is most visible in the structures in which we live and work, and their contribution is also seen in such transportation systems that we use on a daily basis as subways, motorways, railways, airports and harbours. They are also involved in the design, construction and operation of complex water supply and sanitation systems for our ever-growing cities. In such projects and more generally, they perform a critical public and environmental health function as well.