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For shallow footing bearing on cohesionless soils obeying Hansen/Meyerhof style bearing factors, widening the footing footprint often raises allowable bearing pressure principally because?

Choices

  • (A) Pressure stays uniform irrespective of footing width factor
  • (B) Sliding resistance ignores passive wedge growth entirely
  • (C) Wider B enlarges footing shear keys mobilizing passive soil wedges along presumed failure mechanisms
  • (D) Contractor pricing dictates bearing capacity without geotech rationale

Correct answer: (C)

Wider B enlarges footing shear keys mobilizing passive soil wedges along presumed failure mechanisms

Explanation

Wider B increases soil wedge participation on the passive side of footing sliding checks.

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Question 120 of 161