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Pile foundation ppt

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It contain all the basic information about Pile foundation.

It contain all the basic information about Pile foundation.

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  • 1. Pile Foundation ppt Submitted by Vivek Mishra www.youthface.in
  • 2. Foundations• Foundations are structural components used to support columns and transfer loads to the underlying Soil. Foundations Shallow Deep Isolated Combined Strap wall Raft footing footing footing footing footing Caissons Piles
  • 3. Pile foundation• Our building is rested on a weak soil formation which can’t resist the loads coming from our proposed building, so we have to choose pile foundation. Pile cap Piles Weak soil Bearing stratum
  • 4. Pile foundation• Piles are structural members that are made of steel, concrete or timber.
  • 5. Function of piles• As with other types of foundation, the purpose of a pile foundation is: – To transmit a foundation load to a solid ground – To resist vertical, lateral and uplift load• Piles can be – Timber – Concrete – Steel – Composite
  • 6. Concrete pilesGeneral facts – Usual length: 10m-20m – Usual load: 300kN-3000kNAdvantages – Corrosion resistance – Can be easily combined with a concrete superstructureDisadvantages – Difficult to achieve proper cutoff – Difficult to transport
  • 7. Pile foundationPiles can be divided in to two major categories:1. End Bearing Piles If the soil-boring records presence of bedrock at the site within a reasonable depth, piles can be extended to the rock surface2. Friction Piles When no layer of rock is present depth at a site, point bearing piles become very long and uneconomical. In this type of subsoil, piles are driven through the softer material to specified depths.
  • 8. Pile Cap Reinforcement• Pile caps carrying very heavy point loads tend to produce high tensile stresses at the pile cap.• Reinforcement is thus designed to provide: – Resistance to tensile bending forces in the bottom of the cap – Resistance to vertical shear
  • 9. How does a pile look like?• Before presenting the actual picture of a pile foundation some schematic pictures of pile foundation are presented below.04/03/2009
  • 10. Figure 1 All the above schematics show the various types of pile foundations and loads carried by them04/03/2009
  • 11. Schematics of Pile foundations based on method of construction04/03/2009 Figure 2
  • 12. Thank youKindly Visit www.thetechface.com