Study Program
Period
: S0673/Building Construction II
: 2007
PILING FOUNDATION
Meeting 3
Piling Foundation
This foundation is especially used to shoulder heavy
burden and crucible located hard geology in exceeding
7-30 meter under ground face.
Piling used for high storey building and bridge.
Energy that support it pursuant to pressure tip of which also
can be combined with adhesion force of pillar sides.
3
Bina Nusantara
qc.A  end bearing
qc = pressure of konus. (penetration resistance) kg/cm2
A = Wide surface of pillar.
TF = Total Friction
O = Circle
Materials Piling earn made from :
• Wood
• Reinforced concrete.
• Steel ( pipe or profile )
4
Bina Nusantara
Piling Wood Foundation
Used wood type :
 Iron wood ( Kalimantan )
 Black wood ( Sulawesi )
 Merbau wood ( Sumatera )
Is compared to concrete piling and steel, energy support
limited, because :
a. Its limited diameter ( Ø 20 cm )
b. Limited length.
5
Bina Nusantara
Wood before stake, commented beforehand with “ Tar”
materials or wood of a kind with aim to to be more
conserve wood.
Wood pole foundation earn durability, come from all pillar
under low ground water face.
Wood pole foundation can be combined with :
• Couple stone foundation split.
• With reinforced concrete sloof.
6
Bina Nusantara
7
Bina Nusantara
8
Bina Nusantara
9
Bina Nusantara
10
Bina Nusantara
Piling Foundation Reinforced Concrete
This piling of length have to reach hard ground. Piling stake
must be done pillar and carefully have to be vertical and
its situation precisely at planned dot.
If pillar which is oblique stake, hence can generate
eccentricity and rise moment able to endanger
construction.
Stake to one pillar have to be finished till finish, may not be
stopped for to be continued the day after.
11
Bina Nusantara
Various piling size measure:
 25 x 25 cm2
 30 x 30 cm2
 35 x 35 cm2
 40 x 40 cm2
 45 x 45 cm2
Hammer appliance used depended from wide surface of
pillar. Surface of pillar besides in form of its square, earn
also circular, trilateral and hexagon. Square form more
used, because making of its easier concrete mould than
other form.
12
Bina Nusantara
Piling reinforced concrete restating consist of fundamental
bone and bone of spiral.
Relation between column with piling through pile cap and
piling irons released from back part / battered piling
head, to be weared as bone stek.
13
Bina Nusantara
14
Bina Nusantara
Straus Foundation
• Hard ground of its deepness not yet until 6.00 m of
ground face.
• Its ground easy to drilling (not have the character of bog)
Pillar foundation of Straus is reinforce concrete pile which
in local formed.
Surface size measure Ø 25 cm, 30 cm.
Its restating consist of fundamental bone and spiral which
is energy support it pursuant to pressure tip of and
coherent energy.
15
Bina Nusantara
Pillar foundation of Straus each other attributing to link
sloof. Pillar of Straus shouldering connected special
column to through pile cap.
Way of its Execution:
 Ground drilled which level of as according to pillar of
Straus reach hard geology.
 Including bone framework which have been prepared,
and exaggerated fundamental bone length to be weared
as stek which step into pile cap.
 If in hole there are water, hence have to be pumped
former out.
16
Bina Nusantara
 Including to inform against concrete and boxed so that
tip of under wide, then inform against entered next reach
side below/under pile cap or sloof.
 Hereinafter work of pile cap.
17
Bina Nusantara
18
Bina Nusantara
19
Bina Nusantara