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Reliability-Based Analysis of Shallow Foundations

by R. M. Bennett, Univ of Tennessee, United States,
J. D. Hoskins, III, Univ of Tennessee, United States,
W. F. Kane, Univ of Tennessee, United States,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract:

The effects of different parameters on the reliability of shallow foundations are examined. It is found that the footing depth, the footing length, and the load ratio have almost no effect on the reliability. The soil type does have a significant effect of the reliability. Footings on cohesionless soils have a reliability index on the order of 0.9; footings on frictionless soils have a reliability index on the order of 2.0; footings on ?-c soils have a reliability index on the order of 3.4. Thus, the factor of safety should vary with soil type in order to achieve uniform reliability.

Subject Headings: Shallow foundations | Cohesionless soils | Footings | Structural safety | Shear failures | Load factors | Structural reliability

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