53
june 2014
international
construction
FOUNDATIONS
Piling it on
which range in length from 22 m up to 36 m, are being used
to construct coffer dams to enable construction of the viaduct
support columns.
A total of six coffer dams have been built, each constructed
with28pile pairs, which are beingdriven through a top layer of
mud into a sand and silt base.
SGTM will now construct two other viaducts for the high-
speed rail link. One of these, ‘El Hachef’, will have the largest
span (3.5 km) of any viaduct project ever undertaken inAfrica.
In Kuwait, Trevi Foundations Kuwait is carrying out piling
work for a series of infrastructure projects that will upgrade
transportation links across the country.
Central to theproject is theconstructionof amajornewartery,
the Jamal Abdul Nasser Street, which will connect the outer
and the central and commercial part ofKuwaitCity through12
miles of elevated ring roads. Scheduled for completion in2016,
Trevi Foundations Kuwait is installing bored piles, with depths
varying between 16 m and 30 m, and Trelicon piles ranging
between 10m and 12m in depth.
World records
Japanese manufacturer Kobelco says
it has set the world record for driving
the longest prefabricated concrete
foundation piles into the ground inMay
2014 with its brand new 250-tonne
CKE2500GPD pile driver.
The manufacturer delivered two
CKE2500G crawler cranes to
I
ndonesian company
Geotech Efathama has
been using a Thermal
Integrity Profiler (TIP),
manufactured by Pile
Dynamics, to evaluate the
foundations of the Jakarta Eco
Transportation (JET) Monorail
project. JET is the first
monorail project in Indonesia.
It will run two lines covering
25 km and 27 stations.
The TIP uses the heat
generated by curing concrete
to evaluate the integrity of
cast in-situ foundations.
TIPmeasures concrete temperatures during the curing process. It then evaluates the
temperaturewith concrete volume to calculate concrete cover and cage alignment.
TIP can scan the entire cross section of a bored pile and then reveal if the reinforcing
cage ismisaligned and evaluate the thickness of the concrete cover. An important factor for
contractors is that it can be used 24 to 48 hours after concrete pouring.
Hot stuff
Jakartamonorail piles checkedwith TIP
Huisman, which is building a 15,000
m
2
quay in Navegantes, Brazil. The job
requires 1,500 piles to be driven.
DutchcompanyVan’tHekInternational
is in charge of foundations on the site.
TheCKE2500-PD is being used to drive
450 x 450 mm and 500 x 500 mm, 44
m long prefabricated concrete piles
weighing up to 27 tons (24.5 tonnes).
Also looking for a place in the record
book is Bauer. Its subsidiary, Saudi Bauer
Foundation Contractors Ltd completed
the foundations for Kingdom Tower in
Jeddah at the endof 2013. Set tobecome
theworld’s tallest tower, KingdomTower
will rise 1,000m above the ground.
In total, 270 piles were installed, some
measuring110m.Bauerused its ownBG
series rigs, with the longest piles installed
using two modified BG 40 rotary drills
rigs, specially configured for long kellys.
The piles feed into a raft – considered
to be one of the world’s largest one-
piece reinforced steel foundations with
thickness from 4.5m to 5m.
Junttan’s
redeveloped
PMx26-28 pile
drivingmachines
offer a new
hydraulic system
and increased
fuel efficiencies
OOOBauer TechnologieMoscow is using three Bauer BG 40
drilling rigs and a BG 28 drilling rig on the foundationwork
for Gasprom’s Lakhta Tower headquarters in St. Petersburg,
Russia
The raft piling foundation uses Cathodic anti-corrosion
technologies to preserve the steel reinforcement, while strain
gauge instruments and load cells have been built in to detect
changes in the ground.The foundations have alsobeen installed
with earthing and lightning prevention systems.
From the world’s highest to Europe’s highest, Bauer has also
been involved in the foundation work for Gasprom’s new
headquarters – the Lakhta Tower – in St. Petersburg, Russia.
The buildingwill tower 460m once completed.
OOOBauerTechnologie,Moscowwas responsible for driving
264 piles to a depth of 82m using three Bauer BG 40 drilling
rigs and a BG 28 drilling rig.The work was made all the more
challenging due to difficult soil conditions directly at the
coastline.
