TECCO / SPIDER systems stabilize slopes using high-tensile wire.
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TECCO® / SPIDER® systems
stabilize slopes using
high-tensile wire.
• high-tensile wire mesh
(tensile strength of at
least 1770 N/mm2)
• system can be optimized
depending on the subsoil
with several mesh types
• cost-effective thanks to
wide nail spacing
• dimensioning concept
based on large-scale field
and model tests
• small CO2 footprint and
option to cover with
natural vegetation
European Technical Approval
w w w. e o t a . e u
Ideal protection against slope sliding
close to the surface.
Characteristics of high-tensile
meshes and spiral rope nets:
• high performance despite
low weight
• all components have an
uniform strength
• can be installed close to the
ground even in irregular
terrain
• little deformation
• quick to construct
• maintenance-free
• minimal disruption to nature
• can be covered over quickly
with natural vegetation
• permeable to water
• virtually invisible
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TECCO®SYSTEM 3 versus conventional systems
Advantages over shotcrete walls and
supporting structures made of concrete:
• cost-effective thanks to flexible nail spacing
• no drainage outlets required
• groundwater can circulate freely
• virtually invisible
• no additional strain placed on the slope
• quick and easy to install with no excavation
work required
• stays flexible during tremors and earthquakes
• closed traffic routes can reopen quickly
• 4–9 x smaller CO2 footprint
Advantages over wire rope nets, hexagonal
meshes and heavy square-mesh nets:
• quicker to install thanks to wide panels that
can be unrolled
• easier to adapt to uneven terrain
• stronger
• load-bearing performance can be controlled
• easier to tension
• greater flexibility and dimensional stability
• minimal deflection
3
A safe and secure system
for any type of subsoil.
Vegetation matting:
TECMAT®
• reduces the amount of seed washed away
• stabilizes the topsoil layer
P33 spike plate
• standard version
P66 spike plate
• optimized nail grid
• less deformation
T3 clip
• allows panels to be connected securely
• uses the whole width of the panels
4
TECCO® SYSTEM3 in
unconsolidated soil
• pre-tensioning optimized to minimize
deformation
• simple to connect with no unnecessary overlaps
• even distribution of forces
• quick to cover with natural vegetation
• freely dimensionable nail grid
• spike plates can be selected based on dimensioning
TECCO® SYSTEM3 in rock
• can be installed close to the ground in
any terrain
• freely selectable nail pattern
• very safe working environment as the
mesh can be drilled through
SPIDER® spiral rope net
• spiral rope made from twisted high-tensile
steel wire
• high tensile strength
• can be nailed close to the ground in any terrain
• highly resistant to perforation
• mesh can be drilled through, permitting
the precise positioning of nails on individual
boulders to be secured
5
Developed and tested in laboratory
and large-scale field tests.
The Bavarian Trade Institute (Landesgewerbeanstalt tensile strength and load-bearing resistance. Tests
– LGA) in Nuremberg and other independent of the mesh links also demonstrated that, thanks to
testing institutes have confirmed the load-bearing the TECCO® connection clips, the system has a load-
performance of the TECCO® SYSTEM 3 in numerous bearing capacity of 100 %, even at the seams.
laboratory tests (longitudinal and transverse pulling
direction, connection clips, perforation with/without
soil and shearing). In particular, the tests also
measured the interaction between the mesh, spike
plate and anchorage and calculated the system’s
Laboratory tests RUVOLUM® dimensioning
Quality control: Tensile load parallel to the slope, software developed from
tensile test of the mesh concentrated at certain points: Z large-scale field tests
In cooperation with Bern University of Applied
Sciences in Burgdorf, a flat test frame measuring
10 x 12 x 1.2 m was filled with gravel, covered with
high-tensile TECCO® meshes and anchored into a
2.5 x 2.5 m up to 3.5 x 3.5 m grid using spike plates
and nails so that the calculations could be verified
under as realistic conditions as possible. By gradually
increasing the angle of inclination, the tests showed
that the mesh can successfully hold back 230 metric
Perforation test on the mesh parallel tons of material at an angle of up to 85 degrees.
to the nails: P Decisive are the local load transfer of the mesh to the
Z
nail and its punching strength at the upper part of the
spike plate.
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SCAN IT!
6
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RUVOLUM®dimensioning concept:
Simple planning for increased security.
Instabilities near the surface
To help dimension the forces acting on a stabilization Our studies provide proof of our protection and into
system, we developed a special program based on account factors such as:
geotechnical considerations of equilibrium, which we • Slippage in the direction of the slope
make available to planners as an online tool: • Perforation of the mesh
http://applications.geobrugg.com • Combined load on the nails
• Shearing of the mesh on the edge of the
spike plate
Two studies: The dimensioning Global stability
basis underlying the Deploying steel wire mesh to stabilize slopes can
RUVOLUM® model also be used to tackle global stability problems.
Here, the nails required for deeper-lying slip
1. Local instabilities between the nails: surfaces are also dimensioned using convention-
Where local instabilities also occur between the nails, al methods and the results compared with the
we calculate the absorption capacity of the entire RUVOLUM® calculation.
«nailing/mesh covering» system.
2. Instabilities near the surface and parallel
to the slope:
If the surface layer is in danger of slipping against a
firmer subsoil, the nails must prevent it from breaking
up. The number and configuration of the nails must be
dimensioned according to the forces calculated.
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A cost-effective solution
The TECCO® SYSTEM 3 and SPIDER® system can pro-
vide the same level of protection as a conventional
protective covering but using only half as many
nails. This can significantly reduce the total project
Total project costs
costs and the installation time.
Mesh costs
Conventional
Nailing costs flexible systems
TECCO® G65/2 TECCO® G65/3 TECCO® G65/4
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Technical data.
SPECIFICATION TECCO® G65/2
ETA certificate no. ETA-13/0404
CE no. 1301-CPD-0898
Wire diameter 2.0 mm
Spiral wire diameter 1 x 3 -
Tensile strength of wire ≥ 1770 N/mm2
Corrosion protection GEOBRUGG ULTRACOATING®
Mesh width 65 mm
Number of meshes, top to bottom 7.0 pcs/m
Number of meshes, side to side 12.0 pcs/m
Tensile strength of mesh, horizontally (for the purposes of comparison only – not for use in dimensioning) ≥ 65 kN/m in accordance with LGA test report 01/2014
Weight per m2 0.74 kg/m2
Roll edges Mesh ends knotted and twisted
Roll width 3.5 m
Roll length 40 m
Total area per roll 140 m2
Weight per roll 104 kg
Load-bearing resistance for load transfer (for use in dimensioning) P33 spike plate
Load-bearing resistance of mesh to tensile loads parallel to the slope and concentrated at certain points (ZR) 10 kN
Load-bearing resistance of mesh to perforations parallel to the nails (2 · PR ) 80 kN
Load-bearing resistance of the mesh to shearing at the top edge of the spike plate (PR ) 40 kN
Service life*
Climatic category C2: temperate, rural areas in accordance with EN ISO 12944-2 and ISO 9223 > 120 years
* The standards EN ISO 12944-2 and EN 12500 stipulate ranges for rates of zinc erosion in g/m2/year for each of the climatic categories C1 to C5. This allows the theoretical service life assuming proper use to be calculated.
10TECCO® G65/3 TECCO® G65/4 SPIDER® S3-130
ETA-13/0405 ETA-13/0406 ETA-13/0477
1301-CPD-0899 1301-CPD-0900 1301-CPD-0913
3.0 mm 4.0 mm 3.0 mm
- - 6.5 mm
≥ 1770 N/mm2 ≥ 1770 N/mm2 ≥ 1770 N/mm2
GEOBRUGG SUPERCOATING® GEOBRUGG SUPERCOATING® GEOBRUGG SUPERCOATING®
65 mm 63 mm 143 mm
7.0 pcs/m 7.2 pcs/m 3.3 pcs/m
12.0 pcs/m 12.0 pcs/m 5.6 pcs/m
≥ 150 kN/m in accordance with LGA test report 01/2014 ≥ 250 kN/m in accordance with LGA test report 01/2014 ≥ 220 kN/m in accordance with LGA test report 01/2014
1.65 kg/m2 3.3 kg/m2 2.60 kg/m2
Mesh ends knotted and twisted Mesh ends knotted and twisted Mesh ends knotted and twisted
3.5 m 3.5 m 3.5 m
30 m 20 m 20 m
105 m2 70 m2 70 m2
175 kg 231 kg 182 kg
P33 / P66 spike plates P33 / P66 spike plates P33 / P66 spike plates
30 kN / 45 kN 50 kN / 75 kN 45 kN/ 70 kN
180 kN / 240 kN 280 kN / 370 kN 230 kN / 300 kN
90 kN / 120 kN 140 kN / 185 kN 115 kN / 150 kN
90–120 years 90–120 years 90–120 years
SUPERCOATING® ensures at least three times (EN 1993-1-11, AS/NZS 4534) and ULTRACOATING® six times longer service lives compared to wire galvanized in a conventional manner.
11Geobrugg, a reliable partner.
Our engineers and partners analyze the situation support if required – from installation right through to appropriately. In addition, events that exceed the
together with you and then, working together with final acceptance of the structure. system’s calculated absorption capacity may cause
local engineering firms, present their solutions. damage. The use of non-original parts as well as
Painstaking planning is not the only thing you can Product liability severe corrosion, such as might be caused by
expect from us, however; since we have our own Rockfalls, landslips, debris flows, shallow landslides environmental pollution, can reduce the level of
production plants on four continents, we can offer not and avalanches are natural events and therefore protection provided.
only short delivery times but also the best possible cannot be calculated. For this reason, it is impossible to
customer service right on your doorstep. To ensure determine or guarantee absolute safety for persons
your project runs smoothly, we deliver pre-assembled and property using scientific methods. This means that,
and clearly labeled system components right to the to provide the desired level of protection, protective
construction site. Here, we can also provide technical systems must be monitored and serviced regularly and
Geobrugg AG
Geohazard Solutions
1.102.05.EN.1408
Aachstrasse 11 • CH-8590 Romanshorn • Switzerland
Phone +41 71 466 81 55 • Fax +41 71 466 81 50
www.geobrugg.com • info@geobrugg.com
A company of the BRUGG Group
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