Construction—EMEA—Finland—Excavations
The REDI Complex: DYWIDAG Systems stabilize the Foundation of
Finland’s largest Construction Project
In April 2015, construction of Finland’s largest urban project started:
The REDI Complex in Kalasatama, Helsinki’s eastern inner city area.
This project consists of 6 new high-rise buildings with 1,200 apartments,
an office and a hotel tower as well as a 60,000m² shopping center.
At a height of 132m and with 35 floors,
Majakka Tower, the first building, will be
Finland’s tallest apartment building after its
completion, which is scheduled for 2018.
The complete project is scheduled for
completion between 2022 and 2024.
In the first step, the excavation pit for the
towers and the shopping center including the
planned parking decks was excavated and
the needed foundations were built. In total, the
large construction site required approximately
200 temporary, 7-12 strand, 25m long
DYWIDAG Strand Anchors. Furthermore,
approximately 100 permanent, 7-15 strand,
20m long DYWIDAG Rock Anchors were
installed to stabilize the excavation.
The TH concrete walls needed for the
different buildings were anchored in the soil
and rock using permanent WR single bar
anchors. The TH walls were then individually
post-tensioned in sections using DYWIDAG
Post-Tensioning Bars, and the individual
tendons were extended to the required lengths
using couplers. Approximately 500 32, 36,
40, and 47mm Ø DYWIDAG Bar Anchors
with double corrosion protection in lengths of
12-15m were used for this purpose.
The installation, stressing and tendon grouting
was carried out by DSI Construction’s licensee
Tensicon. The DYWIDAG Bar Anchors were
stressed using a Portable Hollow-Piston CFRP
Cylinder.
Owner
SRV Group Plc, Finland
Subcontractor
Tensicon Oy, Finland
DSI Units
DYWIDAG-Systems International
GmbH, BU Geotechnics, Germany,
Tensicon Oy, Finland
DSI and Tensicon Scope
Design, development, production,
supply, installation, technical support,
test installation
DYWIDAG Products
200 7-12 strand DYWIDAG Strand Anchors,
100 7-15 strand DYWIDAG Strand Anchors,
500 32, 36, 40 and 47mm Ø DYWIDAG Bar
Anchors
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