Abstract
The paper presents the results of load tests on instrumented bored piles. Field measurements of load transfer in sand were made and design criteria are suggested for computing the tip and the side resistance of bored piles in sand as a function of soil properties. The behavior of bored piles in sands is a complex problem and more testing and related analytical studies are needed to achieve a better understanding of the problem. The side resistance of a bored pile in sand can be reasonably correlated with the integral on the periphery of the pile of the product. In this study, the correlation factor was found to be equal to about 0.7 for a penetration in sand less than 25 ft. Pending future progress, the curves showing tip load versus settlement for side shear transfer presented in this paper should be used cautiously by the practicing engineer.
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