Transcription of Foundation Manual Chapter4, Footing Foundations
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Foundation Manual Chapter4, Footing Foundations
CHAPTER 4 OCTOBER 2015 CHAPTER 4 Footing Foundations 4-1 Introduction Footing Foundations , also known as spread, combined, or mat footings , transmit design loads into the underlying soil mass through direct contact with the soil immediately beneath the Footing . In contrast, pile-supported Foundations transmit design loads into the adjacent soil mass through pile friction, end bearing, or both.
4-3.1 Failure Modes The mode of failure for soils with bearing capacity overloads is shear failure of the soil mass that supports the footing foundation. It will occur in one of three modes: 1. General shear. 2. Punching shear. 3. Local shear. The Theory of Plasticity describes the general shear failure mode. The other two failure
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