Quantitative Assessment for Piles Productivity Factors |
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Authors: | Tarek M. Zayed Daniel W. Halpin |
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Affiliation: | 1Assistant Professor, Construction Engineering and Management Dept., Faculty of Engineering, Zagazig Univ., Zagazig, Egypt; presently, Assistant Professor, Dept. of Building, Civil & Environmental Engineering, Concordia Univ., Montreal PQ, Canada H3G 1T7. 2Head of Division of Construction Engineering and Management, School of Civil Engineering, Purdue Univ., West Lafayette, IN 47907-1294.
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Abstract: | The management process of any construction operation usually can be defined as a chain of decisions. A decision-maker can bid, plan, and organize the bored pile projects based on an accurate estimate of productivity. To estimate productivity efficiently, piling process qualitative and quantitative factors have to be considered. This paper focuses on assessing the effect of subjective factors on bored pile construction productivity. A productivity index (PI) model is developed to represent this subjective effect in refining productivity assessment using simulation and deterministic techniques. The analytic hierarchy process and fuzzy logic are used to develop the proposed PI model that relies on the actual performance of 10 main piling process subjective factors. Subjective data were collected from bored pile (drilled shaft) contractors considering these subjective factors. The developed PI model implementation to piling process resulted in PI=0.7. This value has been validated using simulation model outputs. |
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Keywords: | Pile foundations Construction Productivity Fuzzy sets |
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