Risk Correction Factors for Bearing Capacity Analysis

by Kingsley Harrop-Williams, BDM Corp, United States,

Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices


In this paper bearing capacity correction factors are developed to account for the randomness in the load and soil properties. These are applied to the bearing capacity equation in the same manner as the conventional correction factors for three dimensional effects, shear in the surcharge, eccentric loading and inclined loading. These factors are developed using the load and resistance factor design concept, but accounting for the correlation between the bearing capacity factors. The correction factors are expressed as functions of the variation in unit weight, cohesion and friction angle of the soil; and the variation of the applied load.

Subject Headings: Load and resistance factor design | Load bearing capacity | Load factors | Eccentric loads | Ultimate loads | Soil strength | Risk management

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