Construction—EMEA—Germany—Slope Stabilizations
GEWI ® Soil Nails ensure long-term Security:
Widening of the B14 Federal Road southwest of Stuttgart
On behalf of the regional board in Karlsruhe, Germany, the B14
Federal Road between Horb-Neckarhausen and Sulz-Fischingen
southwest of Stuttgart was widened. The expansion measures
were carried out in two phases.
Photos reprinted courtesy of PST Spezialtiefbau Süd GmbH, Germany
The first phase included the construction
of an approximately 670m long and up
to 4.65m high shotcrete wall designed to
stabilize a slope located next to a curve
in the road. In the second phase, the
construction of this retaining wall provided
for the complete widening of the B14 in the
curved section. Thanks to the 800m long
widening project, safety in this section of
the road will be considerably improved.
In the first construction phase, the B14
Federal Road was completely rebuilt and
shifted into the slope by approximately 2m.
In total, this section required the excavation
of roughly 10,000m³ of soil. The slope in this
area was permanently stabilized by the new
shotcrete wall.
In order to stabilize the embankment
for the long term, approximately
1,000 GEWI ® Soil Nails were anchored
into the load-bearing strata of the slope
in up to 3 levels up to a height of 5m.
In total, DSI Germany supplied about
6,500m of 25mm Ø GEWI ® Soil Nails
with standard corrosion protection
in individual lengths of 6.5m.
Afterwards, a 30cm thick layer of shotcrete
was applied to the retaining wall over
a surface area of roughly 1,800m².
Subsequently, a 5cm thick facing was
applied in a faux masonry pattern.
Owner
Regional board Karlsruhe,
Germany
Contractor
PST Spezialtiefbau Süd GmbH,
Germany
Engineering
Rainer Verst Dipl.-Ing. Geotechnik &
Spezialtiefbau GmbH, Germany
DSI Unit
DYWIDAG-Systems International GmbH,
BU Geotechnics, Germany
DSI Scope
Production, supply
DYWIDAG Products
Approximately 1,000 25mm Ø, 6.5m long
GEWI ® Soil Nails
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