The net ultimate bearing capacity of a footing is obtained by subtracting which quantity from the gross ultimate bearing capacity?
Correct answer: B. The effective overburden pressure at foundation level
- A. The footing self-weight only
- B. The effective overburden pressure at foundation level
- C. The allowable bearing pressure
- D. The total settlement of the footing
Explanation
Net ultimate bearing capacity removes the pressure that existed at the foundation level before construction. Thus, gross ultimate capacity is reduced by the overburden pressure, commonly represented by q = γDf.
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About Soil Mechanics and Foundations
Soil mechanics examines index properties, phase relationships, classification, permeability, seepage, compaction, consolidation, shear strength and earth pressure. Foundations apply these principles to bearing capacity, settlement and shallow or deep foundation selection, with clear distinction between compaction, which expels air, and consolidation, which expels water over time.
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