ENGINEERING GEOLOGY AND SITE INVESTIGATION. PART 2: FIELD STUDIES

The various duties of an engineering geologist are discussed, and the methods and techniques employed in studies performed by the engineering geologist are reviewed. The objectives of geological field studies are fourfold: verification of documentary data; feature evaluation and recording, and material mapping; problem identification; and supervision of geotechnical operations and site quality control. The field methods used before boreholes or trial excavations are sunk are detailed. The preparation of generalized regional engineering geological maps or detailed specific engineering geological plans are a primary concern. A geotechnical map defines units by their engineering properties; the techniques employed in such mapping are: stratigraphic mapping, structural mapping, physiographic mapping, hydrogeological mapping, and groups disturbed by man. Air photo interpretation is also of importance to the engineering geologist. Geophysical methods which constitute aids to engineering geological survey are: gravimetric, magnetic, electrical, and seismic techniques. Field work in the design investigation stage is related to the siting and supervision of the bore and drill holes, and to the numerous forms of in situ testing which are used to define bulk properties of soil and rock masses. Field index testing is increasingly popular. The main duties of a resident engineering geologist during the construction state of a project are: mapping and recording of the ground conditions revealed by the works; continual assessment of the exposed soil and rock; the assistance to or supervision of geotechnical works; and the assessment of the type, quality and placement of these during construction operations.

  • Availability:
  • 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:
    • Burnett, A D
  • Publication Date: 1975-7

Media Info

  • Features: Photos; References; Tables;
  • Pagination: p. 29-32
  • Serial:
    • GROUND ENGINEERING
    • Volume: 8
    • Issue Number: 4
    • Publisher: EMAP CONSTRUCT LIMITED
    • ISSN: 0017-4653

Subject/Index Terms

Filing Info

  • Accession Number: 00127477
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 10 1976 12:00AM