The discussers of the above paper point out that in estimating the total thrust on a panel in the wall, since the seasonal fluctuation in load indicated by the force transducers is low, it is probable that the pressure fluctuations suggested by the pressure cell observations are not entirely real but more a function of the cells response to temperature. The Terra Tec cell is discussed and the discussers' experience with similar cells is discussed. Pnenmatic earth pressure cells were used in the instrumentation of the piled-raft foundation of a building. The cells were embedded with their outer faces flush with the underside of the raft and in contact with sandy gravel. The influence of temperature on pressure cell readings under conditions of more-or-less constantly applied pressure was correction required for temperature was found to be much that heat of hydration of the raft concrete. The conrrection required for temperature was found to be much higher than the suggested by an earlier investigation. For a given change in temperature, the correction to be applied to the observations varied from cell to cell, reflecting in-situ variations in restraint.

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Filing Info

  • Accession Number: 00156160
  • Record Type: Publication
  • Report/Paper Numbers: Proc. Paper 12113 Proceeding
  • Files: TRIS
  • Created Date: Feb 16 1978 12:00AM