ENGINEERING GEOLOGY AND SITE INVESTIGATION PART 4: DESIGN OF SITE INVESTIGATIONS

Design should ensure that the investigation fulfills two main functions. These functions are: to recongise and determine the distribution of materials (including water) and discontinuities in the ground mass; and to discover those engineering properties of materials and mass (including the influence of discontinuities that will affect construction). The recognition of the materials which geologically make up the mass flooows sampling. All materials are exposed in man-made excavations and the chance of successfully sampling the mass depends on the dimensions and spacing of the excavations. Boreholes in rock are continuously sampled by rotary coring and expose a full sequence of strata. With regard to regular boundary surfaces, a marker band must be identified at not less than three points to calculate its orientation. Fold and depositional structures cut by faults, lithologies enclosed in boundary surfaces, unconformities (due to buried physiographies), very irregular boundary surfaces, and discontinuity patterns are discussed. Most engineering properties of materials and mass are determined by laboratory tests on samples extracted from boreholes. Although field testing could be better than laboratory testing, large bulk testing canonly be undertaken by geophysical methods. Comments are also made on the depth of investigation, cost of investigations, time for investigations, and design hazards.

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  • Corporate Authors:

    Wells (Edward) and Sons, Limited

    143/145 Camberwell New Road
    London SE5,   England 

    Foundation Publications Limited

    7 Ongar Road
    Brentwood CM15 9AU, Essex,   England 
  • Authors:
    • PRICE, D G
  • Publication Date: 1975-11

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 29-32
  • Serial:
    • GROUND ENGINEERING
    • Volume: 8
    • Issue Number: 6
    • Publisher: EMAP CONSTRUCT LIMITED
    • ISSN: 0017-4653

Subject/Index Terms

Filing Info

  • Accession Number: 00132918
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 5 1976 12:00AM