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It is the load carrying capacity of the soil.
Safe net bearing capacity (qns)
It is the net soil pressure which can be safety applied to the soil considering only shear failure. It is given by,
qNS = qn2/FS
Safe gross bearing capacity (qs)
It is the maximum gross pressure which the soil can carry safely without shear failure. It is given by,
qs = qns + γDf
Allowable Bearing Pressure
It is the maximum soil pressure without any shear failure or settlement failure
where, qs = Safe bearing capacity.