A Presentation on Bored Cast-in-Situ Piles
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Transcript of A Presentation on Bored Cast-in-Situ Piles
Welcome
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.
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
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:
Introduction: Classification based on the function Classification based on material and
composition
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
Pile Classification:
Main Functions of Piles – End Bearing (left) and Friction (right)
General Description Of Work:
Location Piling Work Materials Dewatering Back Filling Power and Water Period of Completion
Workmanship: Control of Piling Installation Use of Drilling Mud Cleaning of Borehole Tremie Concreting Defective Pile Recording of Data
Pile Compression Load Test by Kentledge System :
General Frequency Prerequisite Method
KENTLEDGE
Section view of Tension Test Setup using reaction pile and a Hydraulic jack
View of Tension Test Setup system
DIAL GUAGE HYDROLIC PUMP TESTING PILE
Execution of construction works at site :
Preliminary Works Piling Work Steps of Piling
RIG(TRIPOD WITH WINCH)
BAILERCASING
DMC PIPES CHISEL
TREMIE PIPE REINFORCEMENTS
HYDROMETERHOPPER
COVER BLOCKCONCRETE MIXING MECHINETOTAL STATION
Pile Cut Off, Excavation And Clean-up:
Pile Cut off Level Excavation Cleaning of Work Site
PILE CUT OFF
The Equipments Of Piling : Reinforcements (Stirrups & Stiffeners) DMC Pipes Development Length & Lap Length Tremie Pipes Chisel Bailer Casing Hopper Cement & Admixture
REINFORCEMENTSStirrups & Stiffeners
DMC PIPESTREMIE PIPES
HOPPER
CHISELBAILER CASING
Vertical Pile Load Test (Initial & Routine) :
Definition Process
TEST PILE
PILE LOAD TEST
LOAD vs SETTLEMENT GRAPH
Compression Test Of Concrete (Cube Test) :
Aim Equipments Procedure Precaution Information Results Judgments
UNIVERSAL TESTING MACHINE
CONCRETE CUBES CUBE MOULDS
The Slump Test Of Concrete : Aim Equipments Procedure Precaution Information
True Slump Shear Slump Collapse
Results Judgments
SLUMP CONE
MEASUREMENT OF SLUMP SLUMP CLASSIFICATION
Fineness Modulus of Coarse Aggregate :
Aim Equipments Procedure Precaution Information Results Judgments
Sieve
Requirements Of Drilling Mud (Bentonite):
Properties Functions Requirements
BENTONITE
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.
References : MURTHY V.N.S – SOIL MECHANICS AND
FOUNDATION ENGINEERING SHETTY M.S – CONCRETE TECHNOLOGY IS 2911 (Part 1/Sec 2) : 2010
Thank You