Tests on Instrumented Piles, Ogeechee River Site

by Aleksandar Sedmak Vesic, (F.ASCE), Prof. and Chmn.; Dept. of Civ. Engrg., Duke Univ., Durham, NC,

Serial Information: Journal of the Soil Mechanics and Foundations Division, 1970, Vol. 96, Issue 2, Pg. 561-584

Document Type: Journal Paper


The paper presents and analyzes the results of a series of field tests with instrumented 18-in.-diameter steel pipe piles and 16-in.-diameter square prestressed concrete piles in a deep deposit of uniform, dense sand. The pile lengths were varied from 10 ft to 50 ft in order to establish the variation of point and skin resistances with depth. It is found that these resistances increase approximately linearly with depth only over a limited zone not exceeding 10-pile diam., reaching nearly constant final values, which appear to depend on relative density of the sand only, beyond depths of approximately 20-pile diameter. An excellent correlation is found between these resistances and static, Dutch, cone penetration resistances. Empirical formulas are proposed for determination of pile settlements under load as well as for evaluation for deformation moduli from the results of static penetration tests.

Subject Headings: Pile tests | Concrete piles | Load and resistance factor design | Steel piles | Pipe piles | Penetration tests | Pile settlement | Rivers and streams

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