When a footing carries a concentric load but is placed near a sloping ground surface, its bearing capacity generally:
Correct answer: C. decreases because the failure zone is reduced
- A. remains unchanged for every slope angle
- B. increases because confinement is greater
- C. decreases because the failure zone is reduced
- D. becomes equal to the pile capacity
Explanation
A nearby slope reduces the lateral confinement and available soil mass supporting the footing, so bearing capacity decreases. Its value depends on footing geometry, soil strength, depth, and slope configuration.
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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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