Many old sewers are abraded, cracked and being subjected to higher pressures than they were designed for. The author discusses the reasons for the choice of tunnelling to sewer a road in Sheerness on the Isle of Sheppey and describes the method being used. The new sewer, nearly 1 M in diameter, replaces the old 230 mm cracked and broken brick and glazed-pipe sewer. One of the main reasons for tunnelling was to reduce disturbance to people, their houses and to small businesses in the road. Investigations of geological conditions led to the contractor undertaking an extensive programme of grouting, to stabilise the tidal ballast, using the two-shot joosten process. The original plan to use sheep-piled cut-and-cover techniques was rejected on environmental grounds and has been replaced by pipe-jacking. Three double thrust pits and one thrust and reception pit have been built, in addition to four reception pits and eight manholes. (TRRL)

  • Corporate Authors:

    IPC Building and Contract Journals Limited

    Surrey House, 1 Throwley Way
    Sutton, Surrey SM1 4QQ,   England 
  • Authors:
    • Paynting, T
  • Publication Date: 1980-1-24


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00312282
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 30 1980 12:00AM