Comments are made that are based on studies on the influence of compaction plant on the horizontal pressures developed behind retaining walls. Whereas the paper postulates that active earth pressure conditions are developed at all levels of fill, in the study reported, the coefficient of earth pressure at rest is generally considered more applicable. However, even with walls designed on the basis of active conditions, it seems unlikely that at intermediate stages of construction the forces generated by the compaction plant will be sufficient to produce active yielding of the wall. This is particularly the case when a reasonable factor of safety has been employed in the design calculations. The author in his closure to the discussion comments on the discusser's observations on the application of certain equations to rigid walls. It is also observed with regard to the assumption of an infinitely long line load, that by integration of the Boussinesq equation between appropriate limits (except for very narrow roller widths or large critic depths) the error is insignificant.

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Filing Info

  • Accession Number: 00322660
  • Record Type: Publication
  • Report/Paper Numbers: ASCE 14580
  • Files: TRIS
  • Created Date: Mar 12 1981 12:00AM