SO-Foundation

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Introduction of up to 20 soil layers.

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User is informed about the common ranges regarding input parameters.

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Pressure isobars are calculated and generated below footings.

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Determination of bearing capacity of shallow footings (Spread, Continuous and Mat) with different dimensions considering both shear failure and settlement (Elastic and Consolidation).

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Calculation of settlement corresponding to the allowable pressure.

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Calculation of modulus of subgrade reaction.

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Calculation and generation of modulus of subgrade reaction contour on the footing surface.

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Presentation of custom load-settlement graphs.

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Exporting results to MS Excel format.

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Presentation of calculation report with sufficient details.

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Creation of profiles for the desired settings.

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Saving files with a minimal size.

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Employment of 5 methods, Eurocode, Hansen, Meyerhof, Terzaghi and Vesic.

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Alteration of general factor of safety.

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Strength reduction factors may be assigned for friction angle and cohesion, separately.

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Water effect is applied by 2 methods.

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Consideration of large footing effect in calculations.

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Alteration of allowable settlement by user’s will.

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Effective depth in settlement calculation is determined as the minimum of below: 
a. Pressure isobars (according to each of the methods Boussinesq, Westergaard and Approximate 2V:1H) or a multiple of foundation width. 
b. Depth of the rigid layer.

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Modulus of elasticity can be determined by 3 methods: 
a. Weighted average of layers.
b. Integration is performed on the specified graph (variation of modulus of elasticity by depth) over the effective zone of settlement and the mean value is obtained.
c. Manually specified by the user.

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Excavation effect is considered by 2 methods: 
a. By the use of soil stress history.
b. Adding a specified percent of footing overburden pressure to the bearing capacity with settlement criteria.

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Settlement calculations are performed by 2 methods, Steinbrenner and Das

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2 footing types, flexible and rigid are available.

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Excavation effect may or may not be considered.

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Preconsolidation pressure can be calculated by 3 methods, “Auto” and specified by the user (“P′_c” and “OCR”).

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Stress increase due to footing load is calculated by 3 methods, Boussinesq, Westergaard and Approximate 2V:1H. Mentioned calculations are performed in 2 modes: 
a. Middle depth of the layer is considered as the layer’s average. 
b. Calculations are performed in top, middle and bottom of the layer and the result is obtained by the use of Simpson’s rule.

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Ability to divide each layer to a maximum of 20 sublayers, in order to increase solution precision.

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A specified fraction of consolidation settlement will be taken into account by user’s will.