文档介绍：GEOTECHNICAL ENGINEERING
CIRCULAR (GEC) No. 8
__________
DESIGN AND CONSTRUCTION
OF CONTINUOUS
FLIGHT AUGER PILES
FINAL
April 2007
1. Report No. 2. Government Accession No. 3. Recipients Catalog No.
4. Title and Subtitle 5. Report Date
GEOTECHNICAL ENGINEERING CIRCULAR NO. 8 6. anization Code
Design and Construction of Continuous Flight Auger (CFA) Piles
7. Author(s) 8. anization Report No.
Dan A. Brown, ., ., Steven D. Dapp, ., .,
W. Robert Thompson, III, ., and Carlos A. Lazarte, ., .
9. anization Name and Address 10. Work Unit No. (TRAIS)
GeoSyntec Consultants
10015 Old Columbia Road, Suite A-200 11. Contract or Grant No.
Columbia, Maryland 21046-1760
12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered
Office of Technology Application Technical Report
Office of Engineering/Bridge Division
Federal Highway Administration 14. Sponsoring Agency Code
. Department of Transportation
400 Seventh Street, .
Washington ., 20590
15. Supplementary Notes
FHWA Technical Consultant: . DiMaggio, ., . Nichols, .
16. Abstract
This manual presents the state-of-the-practice for design and construction of continuous flight auger
(CFA) piles, including those monly referred to as augered cast-in-place (ACIP) piles, drilled
displacement piles, and screw piles. CFA pile types, materials, and construction equipment and
procedures are discussed. A performance-based approach is presented to allow contractors greater
freedom pete in providing the most cost-effective and reliable foundation system, and a rigorous
construction monitoring and testing program to verify the performance. Quality control (QC)/quality
assurance (QA) procedures are discussed, and general requirements for a performance specification are
given.
Methods to estimate the static axial capacity of single piles are mended based on a thorough
evaluation parison of various