DESIGN AND CONSTRUCTION OF AUGER-CAST PILES IN FLORIDA

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.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1994/1447/1447-002.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=DESIGN+AND+CONSTRUCTION+OF+AUGER-CAST+PILES+IN+FLORIDA&author=M.+McVay&author=R.+Casper&author=R.+Casper&publication_year=1994
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1447, Design and Construction of Auger Cast Piles, and Other Foundation Issues. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • McVay, Michael
  • Casper, Robert
  • Casper, Robert
• Publication Date: 1994

Language

• 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:
  • Transportation Research Record
  • Issue Number: 1447
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Cast in place structures; Construction; Construction equipment; Design; Design methods; Grout; Load tests; Settlement (Structures); Support piles
• Geographic Terms: Florida
• Old TRIS Terms: Augered piles; Pile bearing capacities
• Subject Areas: Bridges and other structures; Construction; Design; Highways; I24: Design of Bridges and Retaining Walls; I53: Construction of Bridges and Retaining Walls;

Filing Info

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