Since 1967 in the Federal Republic of Germany the improvement of public mass transit has been financially promoted in overcrowded regions and city centers. Without including road tunnels and sewers,--solely in the area of railway transit an enormous volume of tunnel construction work has been carried out. Various technical research and development programs have been combined with this volume of construction work. Whereas in the sixties the tunnels were almost exclusively constructed in open cut because of the, in most cases, rather difficult soil conditions, the underground excavation method has been increasingly used in the seventies. This, of course, is a consequence of technical developments, which have had a considerable effect on the cost. The article discusses three problem areas and developments that have taken place in them; they include tunnel lining and especially, reinforced concrete lining; joint sealing with special consideration of the waterproofing of concrete segmental lining; tunnelling costs and the most important factors that influence them.

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  • Corporate Authors:

    Morgan-Grampian Limited

    30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Girnau, G
  • Publication Date: 1978-4

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Filing Info

  • Accession Number: 00180391
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Oct 12 1981 12:00AM