This document provides an overview of a seminar on bored cast-in-situ piles. It discusses pile classification, general construction descriptions, workmanship requirements, load testing procedures, equipment used, and testing methods for concrete and aggregates. The conclusion states that bored cast-in-situ piling is favorable due to reduced waste and cost, the ability to cast piles to exact lengths, and capacity to bear and transfer heavy loads to the ground. Reinforcement is not always needed but adds stability and durability. Overall, bored cast-in-situ piling is preferable for bearing large loads as piles can be cast deep into the ground.

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. BAILERCASING

16. DMC PIPES CHISEL

17. TREMIE PIPE REINFORCEMENTS

18. HYDROMETER
HOPPER

19. COVER BLOCK
CONCRETE MIXING MECHINETOTAL 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