Mar 09, 2015 · A p = cross-sectional area of pile base, m 2. D = diameter of pile shaft, m. γ = effective unit weight of the soil at pile tip, kN/m 3. N γ = bearing capacity factor. N q = bearing capacity factor. Φ = Angle of internal friction at pile tip. P D = Effective overburden pressure at pile tip, in kN/m 2.
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