A Presentation on Bored Cast-in-Situ Piles

1. Welcome

2. A Seminar on the Basis of the Construction of Bored Cast-in-Situ Piles Subham Kundu (CE - 33) Subhankar Karmakar (CE - 34) Supriya Chowdhury (CE - 35 ) IMPS College of Engineering and Technology, Malda.

3. Content : INTRODUCTION TERMINOLOGY PILE CLASSIFICATION GENERAL DESCRIPTION OF WORK WORKMANSHIP PILE COMPRESSION LOAD TEST BY KENTLEDGE SYSTEM EXECUTION OF CONSTRUCTION WORKS AT SITE PICTURES PILE CUT OFF, EXCAVATION AND CLEAN-UP

4. THE EQUIPMENTS OF PILING VERTICAL PILE LOAD TEST (INITAIL AND ROUTINE) (COMPRESSION TEST OF CONCRETE) CUBE TEST THE SLUMP TEST OF CONCRETE FINENESS MODULUS TEST FOR COARSE AGGREGATE REQUIREMENTS OF DRILLING MUD (BENTONITE) CONCLUTION REFERENCES Content :

5. Introduction : Classification based on the function Classification based on material and composition

6. Terminology: Bored Cast In-situ Pile Cut-off Level Diameter of Piles Factor of Safety Initial Load Test Initial Test Pile Load Bearing Pile Pile Spacing Routine Test Pile Safe Load Ultimate Load Capacity Working Load Working Pile Negative Skin Friction or Drag down Force

7. Pile Classification: Main Functions of Piles – End Bearing (left) and Friction (right )

8. General Description Of Work: Location Piling Work Materials Dewatering Back Filling Power and Water Period of Completion

9. Workmanship: Control of Piling Installation Use of Drilling Mud Cleaning of Borehole Tremie Concreting Defective Pile Recording of Data

10. Pile Compression Load Test by Kentledge System : General Frequency Prerequisite Method KENTLEDGE

11. Section view of Tension Test Setup using reaction pile and a Hydraulic jack View of Tension Test Setup system

12. DIAL GUAGE HYDROLIC PUMP TESTING PILE

13. Execution of construction works at site : Preliminary Works Piling Work Steps of Piling

14. RIG(TRIPOD WITH WINCH)

15. BAILER CASING

16. DMC PIPES CHISEL

17. TREMIE PIPE REINFORCEMENTS

18. HYDROMETER HOPPER

19. COVER BLOCK CONCRETE MIXING MECHINE TOTAL STATION

20. Pile Cut Off, Excavation And Clean-up: Pile Cut off Level Excavation Cleaning of Work Site PILE CUT OFF

21. The Equipments Of Piling : Reinforcements ( Stirrups & Stiffeners) DMC Pipes Development Length & Lap Length Tremie Pipes Chisel Bailer Casing Hopper Cement & Admixture

22. REINFORCEMENTS Stirrups & Stiffeners

23. DMC PIPES TREMIE PIPES HOPPER CHISEL BAILER CASING

24. Vertical Pile Load Test (Initial & Routine) : Definition Process

25. TEST PILE PILE LOAD TEST LOAD vs SETTLEMENT GRAPH

26. Compression Test Of Concrete (Cube Test) : Aim Equipments Procedure Precaution Information Results Judgments UNIVERSAL TESTING MACHINE

27. CONCRETE CUBES CUBE MOULDS

28. The Slump Test Of Concrete : Aim Equipments Procedure Precaution Information True Slump Shear Slump Collapse Results Judgments SLUMP CONE

29. MEASUREMENT OF SLUMP SLUMP CLASSIFICATION

30. Fineness Modulus of Coarse Aggregate : Aim Equipments Procedure Precaution Information Results Judgments Sieve

31. Requirements Of Drilling Mud ( Bentonite ): Properties Functions Requirements BENTONITE

32. Conclusion: Bored Cast in situ piling is favourable than other piling processes. Because there is no waste of time and materials so it is economical and can be cast into exact length. It can bear heavier load and transfer it to the ground soil. Also the transportation cost is not high. It is not necessary to reinforce the pile in normal cases or in places where the pile is completely submerged in the soil. But for more stability and durability of structure we use reinforcement. Over all, Bored cast in situ is preferable for bearing huge amount of load as it can be cast deep inside the ground.

33. References : MURTHY V.N.S – SOIL MECHANICS AND FOUNDATION ENGINEERING SHETTY M.S – CONCRETE TECHNOLOGY IS 2911 (Part 1/Sec 2) : 2010

34. Thank You