Results of model scale footing tests on two compacted sands indicate that the bearing capacity factor, N_γ, is dependent on the absolute width of the footing for both square and circular footings. Caution must be used in applying the results of very small-scale model footing tests previously reported in the literature to full-scale behavior. From the results obtained on different sands at three relative densities, it can be seen that values of N_γ for both sands decrease with footing size and increase with increasing relative density. The results also show that relative density may have a more pronounced influence on N_γ than grain size and the scale effect is more important for dense sands.
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