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Unformatted text preview: over the depth of influence, z ~ ~ in the limit: - but practically the depth of the pressure bulb depth (z = 2B), p~ S: E z dz = J: qm dZ and thus p =q r(~)dZ Axisymmetric Footing 0.2 0.4 0,6 0.8 Iz 2B 1B 3B , , , , , , ,,' "'-. . Strip / / Footinq 4B ' For approximation purposes, Schmertmann proposed idealizing the distribution of Iz as a triangle with a maximum influence factor between 8/2 and B depending on the footing dimensions, as shown at right. Then he suggested splitting the soil mass into homogeneous layers and summing the settlement calculated for each layer using the appropriate value of Iz. z /...
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- Fall '08