Productivity and Cost Assessment for Continuous Flight Auger Piles
Publication: Journal of Construction Engineering and Management
Volume 131, Issue 6
Abstract
Continuous flight auger (CFA) piles do not receive sufficient research attention although they are widely used in the United States, United Kingdom, and other countries in the world. Therefore, this paper focuses on describing the CFA pile installation features, exploring its construction methods, and determining the factors that affect the CFA pile productivity and cost. A productivity index (PI) is developed to quantify the effect of subjective factors on the CFA process productivity. Current research concludes a PI value of 0.78 out of 1.0 (efficiency). Several models are designated to assess the CFA pile’s cycle time, productivity, and cost using deterministic approach. Various charts are developed to show this assessment based upon these models. Results show that the cycle time for depth and diameter piles is ; however, its productivity is 24 piles (holes)/day. The developed tools play an essential role in the CFA decision making process. This paper is relevant to both researchers and practitioners. It provides charts for practitioners’ usage to schedule and price out the CFA pile construction projects. In addition, it provides the researchers with a methodology of applying the deterministic approach to the CFA pile construction process and its limitations.
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Acknowledgments
The writer wishes to express his gratitude and appreciation to the CFA drilling companies, which generously allowed him to collect data and access their sites. The cooperation and assistance of project managers and operators are also gratefully acknowledged and appreciated.
References
Coduto, D. P. (2001). Foundation design: Principles and practices, 2nd Ed., Prentice Hall, Upper Saddle River, N.J.
Das, B. M. (2004). Principles of foundation engineering, 5th Ed., Brooks/Cole, Thomson Learning Inc., Calif.
Deep Foundation Institute (DFI) Pile Committee (1994). Inspector’s guide to augered cast-in-place piles, 1st Ed., Joel Moskowitz, ed., N.J.
Deep Foundation Institute (DFI) Pile Committee (2003). Augered cast-in-place pile manual, 2nd Ed., Rudolph Frizzi, ed., N.J.
Fleming, W. G. K., Weltman, A. J., Randolph, M. E., and Wlson, W. K. (1992). Piling engineering, 2nd Ed., Blackie & Son.
Harris, F. (1983). Ground engineering equipment and methods, McGraw-Hill, New York.
Mure, N., Scott, J. N., Seward, D. W., Quayle, S. D., Clayton, C. R., and Rust, M. (2002). “Just-in-time continuous flight auger piles using an instrumented auger.” Proc., 19th International Symp. on Automation and Robotics in Construction, ISARC, Washington, D.C.
Peurifoy, R. L., Ledbetter, W. L., and Schexnayder, C. J. (2002). Construction, planning, equipment, and methods, 6th Ed., McGraw-Hill, New York.
Richardson’s manual (2003). “General construction cost estimating standards.” Vol. I, Aspen Technology, Inc., Cambridge, Mass.
Means, R. S. (2004). Building construction cost data, 62nd annual Ed.
Web-1 (2004). http://www.geoforum.com/info/pileinfo/view.asp?ID=8 (April 23, 2004).
Web-2 (2004). ⟨http://www.fps.org.uk/Position%20Papers%20and%20Documents/aquifers.htm⟩ (April 23, 2004).
Web-3 (2004). http://sbe.napier.ac.uk/projects/piledesign/guide/chapter8.htm (April 23, 2004).
Web-4 (2004). www.simplex-foundations.co.uk (April 23, 2004).
Web-5 (2004). http://www.pennine-group.co.uk/cfa-pilling-continuous-flight-auger-piling.html (April 23, 2004).
Web-6 (2004). http://www.franki.co.za/cfa.html (April 23, 2004).
Weele, A. F. V. (1988). “Cast-in-situ piles-Installation methods, soil disturbance and resulting pile behavior.” Deep foundations on bored and auger piles, W. F. Van Impe, ed., A. A. Balkema, Rotterdam, The Netherlands.
Zayed, T. M., and Halpin, D. W. (2004). “Quantitative assessment for piles productivity factors.” J. Constr. Eng. Manage., 130(3), 405–414.
Information & Authors
Information
Published In
Journal of Construction Engineering and Management
Volume 131 • Issue 6 • June 2005
Pages: 677 - 688
Copyright
© 2005 ASCE.
History
Received: Jun 24, 2004
Accepted: Jan 31, 2005
Published online: Jun 1, 2005
Published in print: Jun 2005
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