The use of augered cast-in-place piles has seen a tremendous growth in Florida because of the price and ease of installing them in coastal shell-filled sands. Discussed is the construction of augered cast-in-place piles, including equipment selection, drilling rate, grout fluidity, grout's aggregate size, grout pumping, and auger removal. Also presented is a comparison between a data base of 21 pile load tests (17 compression and 4 tension) from Florida and five design methods. Three of the methods were developed for augered cast-in-place piles, the other two for driven piles and drilled shafts. The predicted capacities of these methods were compared with three types of settlements of the piles' diameters. All of the methods compared most favorably to the 5% criterion. The drilled-shaft approach gave the best prediction for the whole data base, with a mean of 1.08 and a standard deviation of 0.28 for the ratios of predicted to measured capacity and, in the case of compression loadings only (17 piles), a mean of 0.98 and a standard deviation of 0.16. The latter finding suggests that augered cast-in-place piles behave more like drilled shafts than driven piles because of the installation method.


  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 10-18
  • Monograph Title: Design and construction of auger cast piles, and other foundation issues
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00672552
  • Record Type: Publication
  • ISBN: 0309060532
  • Files: TRIS, TRB
  • Created Date: Jan 13 1995 12:00AM