SAND DRAIN THEORY AND PRACTICE

The theoretical approach to the design of sand drain installations has often proved inadequate in the prediction of field performance. The divergence of field performance from designs based on data obtained from tests of undisturbed samples has been found to be greatest where displacement methods of sand drain installation are employed and least where nondisplacement techniques are used. The nondisplacement methods most commonly employed involve controlled jetting and augering systems. Nondisplacement methods are not equivalent with respect to the avoidance of subsoil disturbance; therefore, some divergence between designs based on undisturbed sample test data and field performance is still encountered. This paper reviews the basis for using sand drains and the background of the development of nondisplacement techniques and presents a systematic approach applicable to the evaluation of all installation methods. This approach is essential if the designer is to be provided with all tools necessary for the development of sand drain designs that have a reliable factor of safety when applied in construction, as the nondisplacement methods in use today do not produce comparable results in the field. The results of the Maine test section are reviewed to demonstrate how equivalent designs can be developed for specific methods of installation and specific types of soil. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 22-36
  • Monograph Title: Tolerable Movement of Bridge Foundations, Sand Drains, K-test, Slopes and Culverts
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00196576
  • Record Type: Publication
  • ISBN: 030902823X
  • Files: TRIS, TRB
  • Created Date: Aug 28 1979 12:00AM