7/29/2019 Deep Foundation geothecnic 2

1/15

Mohamad syafiq bin rahim 01dka11f2133

Muhamad kamarul nizam 01dka11f2166

Norfasira binti salleh udin 01dka11f2096

Mohamad fadzly bin kutty abba 01dka11f2125

MR KHAIRUL AZMAN BIN MD YUSUF

7/29/2019 Deep Foundation geothecnic 2

2/15

A deep foundation is a type

of foundation distinguished from shallowfoundations by the depth they are embedded

into the ground

7/29/2019 Deep Foundation geothecnic 2

3/15

Displacement piles

Piles which are driven are termedDisplacement Piles because their installation

methods displace laterally the soils throughwhich they are introduced.

Replacement piles

Piles that are formed by creating a borehole

into which the pile is then cast or placed, arereferred to as Replacement Piles becauseexisting material, usually soil is removed aspart of the process.

7/29/2019 Deep Foundation geothecnic 2

4/15

Displacement

Larger

Preformed

Solid concrete ortimber

Hollow tubeClosed steel or

concrete

Formed In-situ

Tube formerwithdraw void

filled withconcrete

Small

Hollow tube, orH-section steel

Screw

7/29/2019 Deep Foundation geothecnic 2

5/15

A driven pile is a deep foundation that is constructed by

driving a concrete, steel or timber pile.

To support the anticipated load in competentsubsurface material.

Prefabricated concrete piles are driven using a pile

driver equipped with a hydraulic free fall hammer.

Prefabricated concrete piles are primarily used in loosesoils.

7/29/2019 Deep Foundation geothecnic 2

6/15

7/29/2019 Deep Foundation geothecnic 2

7/15

7/29/2019 Deep Foundation geothecnic 2

8/15

Bore piles

Unsupportedduring

construction

Supportedduring

construction

Steel casing

Void filled withreinforcedconcrete

Drilling mud

7/29/2019 Deep Foundation geothecnic 2

9/15

A bored pile is a deep foundation that isconstruction by removing the soil in the pilelocation by an excavating tool (bucket- auger-

core barrel- etc..) to correct depth When the drill has arrived at the correct depth,

the pile is concreted using a tremmie pipe orpumped through the end of the centre pipe

(CFA)

7/29/2019 Deep Foundation geothecnic 2

10/15

A monopile foundation utilizes a single,generally large-diameter, foundation structural

element to support all the loads (weight, wind,etc.) of a large above-surface structure.

7/29/2019 Deep Foundation geothecnic 2

11/15

7/29/2019 Deep Foundation geothecnic 2

12/15

Micropiles

Tripod piles

Sheet piles

Soldier piles

Suction Piles

Adfreeze Piles

Vibrated Stone Columns

Bored Piles

7/29/2019 Deep Foundation geothecnic 2

13/15

Friction piles(cohesion piles) Qs

End bearing piles (point bearing piles) Qb

Combination of friction and cohesion piles

P + W = Qs + Qb

7/29/2019 Deep Foundation geothecnic 2

14/15

END BEARING PILES FRICTION PILES

7/29/2019 Deep Foundation geothecnic 2

15/15

Qult = Qs + Qb= Ab Qult + As fs

Qult = bearing pressure at the bottom

Qult = Cu Nc

fs = friction between the surface of the piles

fs =

Cu