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Deep foundation - pile foundation

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introduction,purpose and importance of foundation,factors affecting foundation,factor affecting in foundation design,types of foundation,deep foundation ,pile foundation - introduction ,types of pile foundation,classification of pile foundation,advantages /disadvantages of pile foundation and materials used for foundation.

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Deep foundation - pile foundation

  1. 1. DEEP :-PILE FOUNDATION BUILDING CONSTRUCTION AND MATERIALS – IX(AR 503B) (SESSION: JULY – DECEMBER ) 2019 CLASS INCHARGE AR.ATIN .K.BOSE AR.MISBAH JAFFRI
  2. 2. INTRODUCTION INTENT SYLLABUS ADVANCE CONSTRUCTION & TECNOLOGY
  3. 3. CLASS SCHEDULE 9:00 – 9:50 AM 9:50 -10:50 AM 11:10 AM-1:00 PM 1:00 -2:00 PM 2:00 -3:50 PM 4:10 -6:00 PM LECTURE DISCUSSION AND INTRODUCTION TO THE STUDIO PROBLEM. ASSIGNMENT SUBMISSION (TYPES OF PILE FOUNDATION : PLAN,ELEVATION AND DETAILS & MANUAL DRAFTING) LUNCH DOCUMENTARY & LITEREATURE STUDY REPORT SUBMISSION (LITERATURE STUDY, HANDMADE SKETCHES, PICS AND CAD DWG) Notes for Students:- 1. Standards will be shown and explained during the conduct of presentation. 2. Each sheet must be completed in all aspects and submitted on the same day. 3. Late submissions will not be accepted. 4. In case of medical cases/ emergencies, the student will have to get an approval from the Director and submit the sheet within 7 days of the concerned lecture.
  4. 4. RISE HIGH BUT ALWAYS MAKE SURE THAT YOUR FOUNDATION IS STRONG ENOUGH
  5. 5. SCOPE INTRODUCTION FUNCTIONS OF FOUNDATION IMPORTANCE OF FOUNDATION FACTORS AFFECTING FOUNDATION FACTORS THAT INFLUENCE THE FOUNDATION DESIGNING TYPES OF FOUNDATIONS SELECTION CRITERIA OF PILE FOUNDATION USES OF PILES CLASSIFICATION OF PILE FOUNDATION •Material & Composition •Mode of Transfer of Load •METHOD OF INSTALLATION OF PILE FOUNDATION •Driven Piles •Bored and Cast In-Situ •Driven and Cast In-Situ •BASED ON FUNCTION OR ACTION •BASED ON DISPLACEMENT OF SOIL MATERIAL USED FOR FOUNDATION ADVANTAGES AND DISADVANTAGES UNIT:-DEEPFOUNDATION
  6. 6. INTRODUCTION • . Super- structure Ground lvl. Sub- structure In your opinion, what is the purpose of foundation for a building? Foundation Foundation is the element that provides ultimate supports for the structure and it is for both static and dynamic loads. The foundation include not only that element below groundwater level, but also the under line soil and rock
  7. 7. THE IMPORTANCE OF FOUNDATIONS IN BUILDING CONSTRUCTIONS .To distribute the total load of the structure on a larger area To support the structure To give enough stability to the structures against various disturbing forces such as wind and rain To prepare a level surface for concreting and masonry work
  8. 8. FACTORS AFFECTING FOUNDATION Soil types and ground water table conditions Structural requirements and foundations Construction requirements Site condition and environmental factor Economy
  9. 9. LOAD DEAD LOAD LIVE LOAD WIND LOAD GROUND CHARACTERISTICS BEARING CAPACITY WATER GROUND LEVEL CHEMICAL CONTENT COST MATERIAL MACHINE TECHNOLOGY MASTERLY SKILLFUL WORKER FACTORS THAT INFLUENCE THE FOUNDATION DESIGNING
  10. 10. FOUNDATION SHALLOW ISOLATED PAD COMBINED STRIP RAFT DEEP WELL PILE LOAD BEARING PILE FRICTION PILE COMBINED END AND FRICTION BEARING PILE PIER TYPES OF FOUNDATION
  11. 11. DEEP- PILE FOUNDATIONS Pile Well Pier • Foundation where the depth is very large compared to the width. • When the load is high and bearing capacity of the soil is low. 11 Highbuilding Bedrock Soft soil
  12. 12. WHEN DO WE CHOOSE PILE FOUNDATION ? Total Area = 100m2 Load Bearing Capacity of soil= 100kN/m2 4000kN 4000kN 4000kN4000kN Total Load = 4000kN x 4 = 16000kN Choice of Foundation ??? Pile Foundation • Economical • Ease of Construction Area Required for Raft = Total Load Load Bearing Capacity of Soil = 16000kN 100kN/m2 = 160m2 Shallow (Raft)
  13. 13. CLASSIFICATION OF PILE FOUNDATION Material & Composition Method of Installation Mode of Transfer of Load Function or Action Displacement of Soil
  14. 14. CLASSIFICATION OF PILE FOUNDATION Material & Composition Material Usage Timber When load is not very high Steel or Concrete When load is high Composite Pile When 2 or more materials are used together
  15. 15. CLASSIFICATION OF PILE FOUNDATION Material & Composition – characteristics and specification Timber piles Timber piles are made of- tree trunks driven with small end as a point Maximum length: 35 m; optimum length: 9 - 20m Max load for usual conditions: 450 kN; optimum load range = 80 - 240 kN Steel piles Maximum length:- practically unlimited optimum length:-12-50m Load for usual conditions = maximum allowable stress x cross-sectional area Concrete Piles Max length:- 10 - 15 m for precast, 20 - 30 m for prestressed Optimum length:- 10 - 12 m for precast. 18 - 25m prestressed Loads for usual conditions:- 900 KN for precast. 8500 kN for prestressed
  16. 16. CLASSIFICATION OF PILE FOUNDATION Mode of Transfer of Load Load Load Hard Incompressible Layer End Bearing Friction Friction PileLoad Bearing Pile Combined End Bearing and Friction Pile +
  17. 17. CLASSIFICATION OF PILE FOUNDATION DrivenPiles Timber Steel Precast Concrete METHOD OF INSTALLATION OF PILE FOUNDATION
  18. 18. BoredandCastIn-Situ Under Reamed Pile Straight Pile CLASSIFICATION OF PILE FOUNDATION Belling Bucket
  19. 19. Driven and Cast In-Situ CLASSIFICATION OF PILE FOUNDATION
  20. 20. CLASSIFICATION OF PILE FOUNDATION BASED ON FUNCTION OR ACTION Load Bearing Friction Compression Anchor Fender Sheet Batter Dolphin
  21. 21. CLASSIFICATION OF PILE FOUNDATION BASED ON DISPLACEMENT OF SOIL Displacement pile • Large soil mass is disturb Non displacement pile • Cast in situ DISPLACEMENT OF SOIL • More Displacement – in the case of timber piling • Less Displacement – in the case of steel piling Displacement pile
  22. 22. CLASSIFICATION OF PILE FOUNDATION BASED ON DISPLACEMENT OF SOIL 7D Dia of pile D Densified Soil Under The Condition Of Loose Soil 4D D Under The Condition Of Clay
  23. 23. CLASSIFICATION OF PILE FOUNDATION BASED ON DISPLACEMENT OF SOIL •Non displacement piles can only be bored into the ground therefore there is no displacement of the soil. •Under reamed piling can only be constructed by non displacement method. Non Displacement pile No displacement of soil
  24. 24. Advantages Disadvantages Piles of any size, length and shape can be made in advance and used at the site. – rapid progress of work Must be properly reinforced to withstand handling stresses during transportation and driving. Driven into granular soil - compacts the adjacent soil mass- increase in bearing capacity Advance planning is required for handling and driving. The work is neat and clean Requires heavy equipment for handling and driving. Supervision of work at the site can be reduced to a minimum. Driven piles are not suitable in soils of poor drainage qualities – Soil heaving or lifting Storage space required is very much less. Where the foundations of adjacent structures are likely to be affected due to the vibrations generated by the driving of piles, driven piles should not be used. In places where it is advisable not to drill holes for fear of meeting ground water under pressure. Since the exact length required at the site cannot be determined in advance, the method involves cutting off extra lengths or adding more lengths - increased cost of project In places where it is advisable not to drill holes for fear of meeting ground water under pressure. Driven Piles
  25. 25. Advantages Disadvantages Piles of any size and length may be constructed at the site. Requires careful supervision and quality control of all the materials used in the construction. Damage due to driving and handling that is common in precast piles is eliminated in this case. Requires careful supervision and quality control of all the materials used in the construction. Ideally suited in places where vibrations of any type are required to be avoided to preserve the safety of the adjoining structure. The advantage of increased bearing capacity due to compaction in granular soil that could be obtained by a driven pile is not produced by a cast-in-situ pile. suitable in soils of poor drainage qualities where there is heavy current of ground water flow or artesian pressure - very difficult to construct Bored Piles
  26. 26. STUDIO PROBLEMS • TYPES OF PILE FOUNDATION : PLAN,ELEVATION AND DETAILS ( MANUAL DRAFTING ) • REPORT SUBMISSION : LITERATURE STUDY (HANDMADE SKETCHES,PICS AND CAD DWG) • REPORT SUBMISSION : CASE STUDY (HANDMADE SKETCHES,PICS AND CAD DWG) IN NEXT CLASS: Modern Formwork techniques in steel. Lecture on the Modern Formwork techniques in steel lift slab construction and slip form formwork and formwork of special profiles, patented formwork. Teaching Aid: Lecture, PPT, Slides
  27. 27. SAMPLE SHEET : TYPES OF PILES
  28. 28. CAPPING & BEAM PLAN
  29. 29. DETAILS

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