Temeltas Bored Piling 25.06

TEMELTAŞ
UNIQUE SOLUTIONS IN
GEOTECHNICAL WORKS
www.temeltas.com.tr
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Usually bored pile is used for those tall buildings or
massive industrial complexes, which require foundations that can
bear the load of thousands of tons, most probably in unstable or
difficult soil conditions.
Bored piling works requires specialist bored piling
contractor to follow up.

What is a Bored Pile?
Bored pile is another type of reinforced concrete pile, which
is used to support high building producing heavy vertical loads.
Bored pile is a cast-in-place concrete pile where the bored piles have
to be cast on the construction site.
Bored piling is cast by using bored piling machine which has
specially designed drilling tools, buckets and grabs, it’s used to
remove the soil and rock. Normally, it can be drilling into 100 meters
depth of soil.

What is a Bored Pile?
The advantage of bored piling is the drilling method produces
little vibration and lower noise level. The drilling method is
depending on the soil condition, so the piling contractor has to do
soil investigation and decide which drilling technology has to be
carried on. Piling contractor decide the correct drilling technology
and minimize disturbance of the surrounding soil.
For cohesion-less soil such as sands, gravels, silts, etc.,
whether it’s under the water table or not, the pile bore hole must be
supported using steel casing or stabilizing mud such as bentonite
suspension or water. After these, reinforcement bar will be put into
the bore hole and concrete will be poured into the bore hole.

Bored piles can be classified into two main groups, according to their
load bearing behaviour:
 Friction piles, which transfer load mainly by frictional resistance
along the shaft;
 Endbearing piles in which load is primarily transferred to the
surrounding soil of through the pile base.
Depending on the structural requirements, bored piles may be
constructed;
 Either singly,
 or in groups
 or as walls using secant, contiguous or king piles, with or without
infill.

Bored Pile Advantages
The main advantages of bored piles over conventional footings or
other types of piles are:
•Piles of variable lengths can be extended through soft compressible
or swelling soils, into suitable bearing material.
•Piles can be extended to depths below frost penetration, and
seasonal moisture variation.
•Large excavations and subsequent backfill are eliminated.
•Adjacent soil is not disturbed or remolded.
•Absence of vibration will not disturb adjacent piles or structures.
•Extremely high capacity caissons can be obtained by expanding the
base of the shaft up to three times the shaft diameter, thus
eliminating construction of caps over multiple pile groups.
•For many design situations bored piles offer higher capacities with
potentially better economics than driven piles.

BORED PILE PROCEDURE
There is a simple step-by-step method on how
to construct the bored pile in the construction
site;
 SET UP THE LOCATION OF BORED PILE
 DRIVING of CASING
 DRILLING
 CLEANING the BOREHOLE
 INSTALLATION of REINFORCEMENT
 INSTALLATION of TREMIE PIPE
 POURING OF CONCRETE
 REMOVING of CASING

BORED PILE
 SET UP THE LOCATION

BORED PILE
 DRIVING of CASING

BORED PILE
 CLEANING the BOREHOLE
*Cleaning buckets

BORED PILE
 INSTALLATION OF REINFORCEMENT

BORED PILE
 INSTALLATION of TREMIE PIPES

BORED PILE
 POURING OF CONCRETE

BORED PILE
 REMOVING of CASING

CFA Piling
TEMELTAŞ can also successfully perform CFA Piling method…

Contiguous Bored Piles/Secant Piles
Closely spaced bored piles can be used to form a retaining
wall, perhaps for the construction of a deep basement or a cut
and cover tunnel. The piles may be constructed so that they
virtually touch each other (contiguous). The gaps between the
piles can be grouted to form a watertight retaining wall.
Alternatively (secant piles) every other pile may be
constructed, with their centres less than two diameters apart.
In-fill piles are then bored, cutting into the adjacent piles to
form a continuous structure. To aid construction, the first
sets of piles may be cast with a lower grade of concrete. These
may not be load-bearing and act as ‘seals’ between the main
load bearing piles.

Contiguous Bored Piles/Secant Piles
As the piles interlock, this form of construction leads to a
more efficient form of structure. During excavation of the
soil, the piles will generally require propping before the
permanent floor and/or roof structure are completed.
Because of the form of construction, the exposed piles will be
fairly rough in appearance. Thus, in most cases, an inner
wall, which may or may not be structural, will be built or some
decorative surface applied, e.g. sprayed concrete or cladding.
A method of drainage will generally be required between the
piles and any inner wall.

AZERBAIJAN, Baku, CRESCENT
DEVELOPMENT, STRABAG-AECOM

AZERBAIJAN, Baku, CRESCENT DEVELOPMENT,
STRABAG-AECOM

MACEDONIA, Skopje, Cevahir Avm & Residance, CEVAHIR
CONSTRUCTION

AZERBAIJAN, Baku, HILTON HOTEL, KORAY-ISR JV

IRAQ, Baghdad, GERMAN HOSPITAL, ATK
CONSTRUCTION

IRAQ, Basrah, SHAT AL BASRAH 10*125MW P.P.
PROJECT / IRAQ MINISTRY OF ELECTRICITY

IRAQ, Basrah, AL NAJYBIA POWER PLANT PROJECT /
ENKA

TURKEY, Istanbul, MARMARAY PROJECT, GAMA-
NUROL ORDINARY PARTNERSHIP

TURKEY, İstanbul, VADİSTANBUL, EVYAP

TURKEY, İstanbul, SABİHA GÖKÇEN AIRPORT, LİMAK-
GMR ORDINARY PARTNERSHIP

TURKEY, Samsun, COMBINED CYCLE POWER PLANT

TURKEY, Erzurum, ARKUN DAM PROJECT, LİMAK
CONSTRUCTIONS

TURKEY, İstanbul, ZINCIRLIKUYU
UNDERPASS, İSTANBUL METROPOL MUNICIPALITY

LOAD TESTS
 STATIC AXIAL COMPRESSION
 LATERAL LOAD TEST
 DYNAMIC LOAD TEST
 TENSION LOAD TEST

LOAD TESTS
 INSTRUMENTED LOAD TESTS
(STRAINGAGE)
 O-CELL(OSTERBERG) TESTS
 BI-DIRECTIONAL TESTS

STATIC AXIALCOMPRESSION TEST
 TEST LAYOUT PLAN

Wide Range of Geotechnical Testing Solutions are Available@Macedonia

INSTRUMENTED LOAD TESTS
(STRAINGAGE)

VERTICALITY TEST USING
JEAN LUTZ DEVICE

Temeltas Bored Piling 25.06

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