CONCRETE COVER
MINIMUM CLEAR COVER TO MAIN REINFORCEMENT IN 1. FOOTINGS :50mm 2. RAFT FOUNDATION TOP :50mm 3. RAFT FOUNDATION BOTTOM/SIDES :75mm 4. STRAP BEAM :50mm 5. GRADE SLAB :20mm 6. COLUMN :40mm 7. SHEAR WALL :25mm 8. BEAMS :25mm 9. SLABS :15mm 10. FLAT SLAB :20 mm 11. STAIRCASE :15mm 12. RETAINING WALL (on earth ) :20/25mm 13. WATER RETAINING STRUCTURE :20/30mm