I am not certain that I agree with your assessment. Shear stress times Diameter do not give moment units. This is how I see the equation: π(D/2)^2.L is the volume of the pile. Times this with γ gives the weight of the pile. Times this by tanδ gives the average frictional resistance of the...
I am glad that I could help. I consider myself both a structural and a geotechnical engineer, and I enjoy very much discussing issues on the interface (or interaction) of the two.
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A grade beam approach goes as follows:
Let us assume that you have a physical eccentricity of 0.5 ft and an axial compression of 200 kips. So, you need a moment of 0.5 ft x 200 kips = 100 ft-k to counter this eccentricity. You must then add a grade beam that connects this footing with a...
