The Fatimide area of Cairo contains scattered but valuable architectural treasures. Therefore, the Egyptian National Authority for Tunnels (NAT) has decided to build two road tunnels to provide direct communication between Salah Salem Street and Opera Square. The tunnels will provide a vital road link, and reduce above-ground traffic in the Fatimide area, so that it can be devoted more completely to tourism. This paper describes the design of the tunnel and its facilities, and includes maps of the five alternative layouts considered. It concentrates on the studies that were conducted simultaneously to determine the two major factors to be considered for the design: (1) the layout and the constraints linked to the tunnel's position in a crowded urban environment; and (2) the equipment and level of services selected to operate the tunnels. The contract documents were based on a concept that foresaw the construction of the underground tunnels below the existing avenues. This approach limits interference with surrounding structures and reduces the need to take over existing properties. In addition, it usually allows convenient direct access from the surface. The paper also describes the tunnel's ventilation equipment, communication systems, safety equipment, control centre, power and lighting equipment, and dewatering system.

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    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
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  • Publication Date: 1999


  • English

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  • Accession Number: 00788444
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Mar 3 2000 12:00AM