This document summarizes a seminar presentation on pile foundation work for a residential building project in Greater Noida. It describes the project details, including 9 towers of G+22 floors with 4 flats per floor. It then covers Indian standards for pile foundations, basic concepts of pile capacity calculation, equipment used, site specifications, materials, installation process, cage detailing, and column casting process.

1. SEMINAR PRESENTATION
OF
PILE FOUNDATION
MAYANK KUMARMAYANK KUMAR
GAURAV PACHAURIGAURAV PACHAURI
2010-20142010-2014
HINDUSTAN COLLEGE OF SCIENCEHINDUSTAN COLLEGE OF SCIENCE
& TECHNOLOGY , FARAH,& TECHNOLOGY , FARAH,
MATHURAMATHURA

2. S.D.S PRIVATE INFRATECHS.D.S PRIVATE INFRATECH
LTD.LTD.
NRI CITY PARI CHOWKNRI CITY PARI CHOWK
GREATER NOIDAGREATER NOIDA

3. PROJECT DETAILINGPROJECT DETAILING
 NINE TOWER (RESIDENTIAL BUILDING)NINE TOWER (RESIDENTIAL BUILDING)
 EACH TOWER HAVE G+22 FLOOREACH TOWER HAVE G+22 FLOOR
 EACH FLOOR HAVE FOUR FLATSEACH FLOOR HAVE FOUR FLATS
 PROJECT COST IS NEAR ABOUT 600PROJECT COST IS NEAR ABOUT 600
CRORECRORE

5. PILEPILE
FOUNDATIOFOUNDATIO
NN
WORKWORK

6. Indian Standards on PilesIndian Standards on Piles
 􀂃􀂃 IS 2911 : Part 1 : Sec 1 : 1979 DrivenIS 2911 : Part 1 : Sec 1 : 1979 Driven
cast in-situ concrete pilescast in-situ concrete piles
 􀂃􀂃 IS 2911 : Part 4 : 1985 Load test onIS 2911 : Part 4 : 1985 Load test on
pilespiles

7.  BS8004 defines deep foundation with D>BBS8004 defines deep foundation with D>B
or D>3m.or D>3m.
 Pile foundation always more expensivePile foundation always more expensive
than shallow foundation but will overcomethan shallow foundation but will overcome
problems of soft surface soils byproblems of soft surface soils by
transferring load to stronger, deepertransferring load to stronger, deeper
stratum, thereby reducing settlements.stratum, thereby reducing settlements.
Top layers of soil are highly compressibleTop layers of soil are highly compressible
for it to supportfor it to support
Why Pile Foundations Prefer

9. W
Qu
Qb
Qs
Basic ConceptBasic Concept
The ultimate bearing capacity (QThe ultimate bearing capacity (Quu )of a pile)of a pile
may be assessed using soil mechanicsmay be assessed using soil mechanics
principles. The capacity is assumed to be theprinciples. The capacity is assumed to be the
sum of skin friction and end-bearingsum of skin friction and end-bearing
resistance, i.eresistance, i.e
QQuu =Q=Qbb+Q+Qss-W-W ……………………………………………….(1).(1)
wherewhere
QQuu total pile resistance,total pile resistance,
QQbb is the end bearing resistance andis the end bearing resistance and
QQss is side friction resistanceis side friction resistance

10. EQUIPMENT USED IN PILEEQUIPMENT USED IN PILE
FOUNDATION WORKFOUNDATION WORK
 1- WINCH MACHINE1- WINCH MACHINE

11.  2-TRIPOD2-TRIPOD

12.  3-HOPPER3-HOPPER
 4- TERMIE PIPE4- TERMIE PIPE

13.  5-DROP HAMMER5-DROP HAMMER

14.  6-CASING PIPE6-CASING PIPE
 7-CHAIN WITH HIGH WEIGHT AT LOWER7-CHAIN WITH HIGH WEIGHT AT LOWER
SIDESIDE

15. SPECIFICATIONS USED ATSPECIFICATIONS USED AT
SITESITE
 Min cement content 400 kg/m3 of concreteMin cement content 400 kg/m3 of concrete
 Min bentonite used in water – 2kg/1000lit.Min bentonite used in water – 2kg/1000lit.
 Pile head is prepared after 28 days.Pile head is prepared after 28 days.
 Min 1m case left above ground level.(LMin 1m case left above ground level.(L
shape)shape)

16. MATERIAL USEDMATERIAL USED
 Bentonite (2kg per 1000 lit.)Bentonite (2kg per 1000 lit.)
 Concrete (M35 grade)Concrete (M35 grade)
 Steel (Fe 415 grade)Steel (Fe 415 grade)
 WaterWater

17. Caisson Installation SequenceCaisson Installation Sequence
 CenteringCentering
 Hole drilled with winch machineHole drilled with winch machine
 Casing installed with help of drop hammerCasing installed with help of drop hammer
 Washing (water with bentonite)Washing (water with bentonite)
 Bottom inspected and testedBottom inspected and tested
 Reinforced (Cage lowering)Reinforced (Cage lowering)
 Termie pipe loweringTermie pipe lowering
 Concrete placement (& casing removal)Concrete placement (& casing removal)

18. DETAILING OF CAGEDETAILING OF CAGE
 Steel is used in casing (Fe-500)Steel is used in casing (Fe-500)
 Two 9.5 m cage usedTwo 9.5 m cage used
 8 no of bars in each case (4-16mm dia8 no of bars in each case (4-16mm dia
and 4-20mm dia)and 4-20mm dia)
 Ring used 8mm dia 150mm c/c spacingRing used 8mm dia 150mm c/c spacing
 Additional master ring 12mm dia usedAdditional master ring 12mm dia used
1500 c/c spacing1500 c/c spacing
 Each ring is welded with main barsEach ring is welded with main bars

19.  Lap length 45 time of bigger bar dia (minLap length 45 time of bigger bar dia (min
900mm)900mm)
 100mm c/c ring is used at lap length.100mm c/c ring is used at lap length.

20. COLUMN CASTINGCOLUMN CASTING

21. PROCESS OF COLUMNPROCESS OF COLUMN
CASTINGCASTING Layout of columnLayout of column
 Reinforcement (according to drawing)Reinforcement (according to drawing)
 ShutteringShuttering
 Checking of shuttering in inclination with help ofChecking of shuttering in inclination with help of
plumb-bobplumb-bob
 Testing of material at site(cube test, slump test)Testing of material at site(cube test, slump test)
 ConcretingConcreting
 Needle vibrator used max 1 min. in a placeNeedle vibrator used max 1 min. in a place

22. SPECIFICATIONSPECIFICATION
 Lap length 47 time of main bar dia.Lap length 47 time of main bar dia.
 Column cover 40mmColumn cover 40mm
 1/3 bars to be overlapped at one location1/3 bars to be overlapped at one location
 Tie bars dia.- 12mmTie bars dia.- 12mm
 Spacing at beam column connection joint-Spacing at beam column connection joint-
100m c/c100m c/c
 Column will not be cast much than 2mColumn will not be cast much than 2m
height.height.