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SEMINAR ON FOOTING
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INTRODUCTION TO FOUNDATIONS
Function of a foundation is to transfer the structural loads from a building safely into the ground. A larger and heavier building of masonry, steel, or concrete would require its foundations to go deeper into earth such that the soil or the rock on which it is founded is competent to carry its massive loads.
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TYPES OF FOUNDATION 1.SHALLOW FOUNDATION Requirements
- Suitable soil bearing capacity - Undisturbed soil or engineered fill 2.DEEP FOUNDATION Requirement - Transfer building loads deep into the earth
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TYPES OF SHALLOW FOUNDATION
Spread Footing Combined Footing Cantilever or Strap Footing Grillage Footing Raft or Mat Footing
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SPREAD FOOTING
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RECTANGULAR SPREAD FOOTING
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ISOLATED SPREAD FOOTING
PITEXCAVATION STIRRUPS COLUMN ISOLATED FOOTING
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COMBINED FOOTING STRAP FOOTING
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GRILLAGE FOOTING RAFT FOOTING
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TYPES OF DEEP FOUNDATION
Pile foundation Well foundation
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PILE FOUNDATION WELL FOUNDATION
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Critical s/c for one way & two way shear
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Critical s/c for bending moment
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DEFLECTED SHAPE
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Load distribution Under earthquake effect Without earthquake effect
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THANK YOU
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