The cause of the slip at Sonning was known exactly and, paradoxically, this meant that the ways of dealing with it were numerous. The method decided on is described and other methods, with the reasons for their rejection, touched on briefly. The object of the method chosen was to fix the slipping mass to the solid stratum beneath. The prime cause of the slip at Twyford was the hydrostatic head which had collected in the sand lens. This was reduced to an economic minimum by the use of 6-in. dia. cast-iron pipes, with perforated ends, which were built into the buttresses, the perforations being at the level of the sand lens. This article shows how a new cutting may be threatened by the existence of permeable strata, which are below the limit of excavation. If a preliminary investigation has been carried out and the presence of a permeable stratum found, the correct slope of the new cutting can be found using the calculation methods proposed in this article.

  • Corporate Authors:

    Temple Press Limited

    161-166 Fleet Street
    Longon EC4,   England 
  • Authors:
    • Slee, J
  • Publication Date: 1953-5-29

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 624-626
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00039931
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 4 1994 12:00AM