SELECTION OF FOUNDATION

SELECTION OF FOUNDATION

1. REQUIREMENT OF GOOD FOUNDATION

   • HAS TO TRANSFER LOAD ON STRUCTURE TO SUB SOIL
   • SHOULD NOT CAUSE SETTLEMENT
   • HAS TO MINIMIZE DIFFERENTIAL SETTLEMENT
   • SOIL SHOULD NOT UNDERGO SWELLING & SHINKING

2. DIFFERENT TYPES OF FOUNDATION

   • SHALLOW FOUNDATION
     • STRIP FOOTING
     • ISOLATED FOOTING
     • COMBINED FOOTING
     • STRAP FOOTING
     • MAT OR RAFT FOUNDATION
   • DEEP FOUNDATION
     • PILE FOUNDATION
     • PIER FOUNDATION
     • WELL OR CAISSON FOUNDATION

3. CHOICE OF DIFFERENT TYPES OF FOUNDATION

   • STRIP - UNDER MASONRY WALL
   • ISOLATED - @ STRONG SOIL & SMALL COLUMN LOAD
   • COMBINED - ADJACENT FOOTING OVERLAPS
   • STRAP - WHEN COMBINED FOOTING IS EXPENSIVE
   • RAFT - ON EXPANSIVE SOIL
   • PILE - @ WEAK TOP SOIL OR HEAVY SUPER STRUCTURE
   • WELL - BELOW WATER BODIES