EFFECT OF EMBEDMENT ON SETTLEMENT OF FOOTINGS ON SAND

The effect of surcharge resulting from embedment, on settlement of footings on sand has been studied through an analytical and experimental investigation. Considering the increase in soil stiffness (soil modulus) resulting from the increase in effective normal stress on account of depth, an analysis to account for the effect of embedment has been carried out. The analysis has been extended to account for the removal of surcharge in plate load tests and a modification to the method of interpretation of the results of the plate load test proposed. Square plate tests on sands, with various depth/width ratios, df/b have been conducted. Two relative density values have been used in the experimental investigation. It has been observed that embedment reduces the settlement of footings up to df/b=1.5 and beyond this there is practically no further reduction in settlement. A depth correction factor, cd, defined as the ratio of settlement of an embedded footing to that of a footing with no embedment, (df/b=0) has been obtained experimentally as well as analytically. Values of cd obtained and values of cd suggested by various investigators have been compared and an equation for cd to give a reasonable and conservative estimate of settlement of an embedded footing has been proposed. (TRRL)

  • Availability:
  • Corporate Authors:

    Indian Geotechnical Society

    Bahadur Shah Zafar Marg
    New Delhi 110001,   India 
  • Authors:
    • Ramasamy, G
    • Rao, ASR
    • Chandra, P
  • Publication Date: 1982-4

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 112-131
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00387462
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Aug 30 1984 12:00AM