European Technical Approval

www.eota.eu

TECCO® / SPIDER® systemsstabilize slopes usinghigh-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 fi eld and model tests

• small CO2 footprint and option to cover with natural vegetation

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Der stärkste Schutz weltweit:Die Steinschlag-Barriere RXE-8000A

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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

Ideal protection against slope sliding close to the surface.

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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

TECCO® versus conventional systems

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T3 clip• allows panels to be connected securely• uses the whole width of the panels

P33 spike plate• standard version

Vegetation matting: TECMAT®• reduces the amount of seed washed away• stabilizes the topsoil layer

P66 spike plate• optimized nail grid• less deformation

A safe and secure system for any type of subsoil.

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TECCO® 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

TECCO® 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

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

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Developed and tested in laboratory and large-scale fi eld tests.

The Bavarian Trade Institute (Landesgewerbeanstalt – LGA) in Nuremberg and other independent testing institutes have confirmed the load-bearing performance of the TECCO® system in numerous 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 software developed from large-scale fi eld testsIn 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 tons of material at an angle of up to 85 degrees. Decisive are the tensile strength of the mesh to the nail and its punching strength at the upper part of the spike plate.

Tensile load parallel to the slope, concentrated at certain points: Z

Perforation test on the mesh parallel to the nails: P

Quality control:tensile test of the mesh

tensile strength and load-bearing resistance. Tests of the mesh links also demonstrated that, thanks to the TECCO® connection clips, the system has a load-bearing capacity of 100 %, even at the seams.

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RUVOLUM®dimensioning concept:Simple planning for increased security.

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.

To help dimension the forces acting on a stabilization system, we developed a special program based on geotechnical considerations of equilibrium, which we make available to planners as an online tool:http://applications.geobrugg.com

Two studies: The dimensioning basis underlying the RUVOLUM® model

1. Local instabilities between the nails:Where local instabilities also occur between the nails, we calculate the absorption capacity of the entire «nailing/mesh covering» system.

Our studies provide proof of our protection and into account factors such as:• Slippage in the direction of the slope• Perforation of the mesh• Combined load on the nails• Shearing of the mesh on the edge of the

spike plate

Instabilities near the surface

Global stabilityDeploying steel wire mesh to stabilize slopes can also be used to tackle global stability problems. Here, the nails required for deeper-lying slip surfaces are also dimensioned using convention-al methods and the results compared with the RUVOLUM® calculation.

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A cost-effective solution

The TECCO® system can provide the same level of protection as a conventional protective covering but using only half as many nails. This can significantly reduce the total project costs and the installation time.

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Conventional fl exible slopestabilization systems

TECCO G65/4TECCO G65/3

Mesh costs

Nailing costs

TECCO® / SPIDER® TECCO® G65/2 TECCO® G65/3 TECCO® G65/4 SPIDER® S3-130

ETA-13/0404 ETA-13/0405 ETA-13/0406 ETA-13/0477

1301-CPD-0898 1301-CPD-0899 1301-CPD-0900 1301-CPD-0913

2.0 mm 3.0 mm 4.0 mm 3.0 mm

- - - 6.5 mm

≥ 1770 N/mm2 ≥ 1770 N/mm2 ≥ 1770 N/mm2 ≥ 1770 N/mm2

GEOBRUGG ULTRACOATING® GEOBRUGG SUPERCOATING® GEOBRUGG SUPERCOATING® GEOBRUGG SUPERCOATING®

65 mm 65 mm 63 mm 143 mm

3.5 m 3.5 m 3.5 m 3.5 m

40 m 30 m 20 m 20 m

140 m2 105 m2 70 m2 70 m2

0.74 kg/m2 1.65 kg/m2 3.3 kg/m2 2.60 kg/m2

104 kg 175 kg 231 kg 182 kg

10 kN 30 kN / 45 kN 50 kN / 75 kN 45 kN/ 70 kN

80 kN 180 kN / 240 kN 280 kN / 370 kN 230 kN / 300 kN

40 kN 90 kN / 120 kN 140 kN / 185 kN 115 kN / 150 kN

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Technical data.

ETA certificate no.

CE no.

Wire diameter

Spiral wire diameter 1 x 3

Tensile strength of wire mesh

Corrosion protection

Mesh width

Number of meshes, top to bottom 7.0 pcs/m 7.0 pcs/m 7.2 pcs/m 3.3 pcs/m

Number of meshes, side to side 12.0 pcs/m 12.0 pcs/m 12.0 pcs/m 5.6 pcs/m

Tensile strength, horizontally (for the purposes of comparison only – not for use in dimensioning) ≥ 65 kN/m in accordance with LGA test report 11/2013 ≥ 150 kN/m in accordance with LGA test report 04/2010 ≥ 250 kN/m in accordance with LGA test report 11/2013 ≥ 220 kN/m in accordance with LGA test report 11/2013

TECCO® / SPIDER® roll

Roll edges Mesh ends knotted and twisted Mesh ends knotted and twisted Mesh ends knotted and twisted Mesh ends knotted and twisted

Roll width

Roll length

Total area per roll

Weight per m2

Weight per roll

Load-bearing resistance for load transfer (for use in dimensioning) P33 spike plate P33 / P66 spike plates P33 / P66 spike plates P33 / P66 spike plates

Load-bearing resistance of mesh to tensile loads parallel to the slope and concentrated at certain points (ZR)

Load-bearing resistance of mesh to perforations parallel to the nails (2 · PR)

Load-bearing resistance of the mesh to shearing at the top edge of the spike plate (PR)

Service life*

Climatic category C2: temperate, rural areas in accordance with EN ISO 12944-2 and ISO 9223 > 120 years 90 –120 years 90 –120 years 90 –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.

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TECCO® / SPIDER® TECCO® G65/2 TECCO® G65/3 TECCO® G65/4 SPIDER® S3-130

ETA-13/0404 ETA-13/0405 ETA-13/0406 ETA-13/0477

1301-CPD-0898 1301-CPD-0899 1301-CPD-0900 1301-CPD-0913

2.0 mm 3.0 mm 4.0 mm 3.0 mm

- - - 6.5 mm

≥ 1770 N/mm2 ≥ 1770 N/mm2 ≥ 1770 N/mm2 ≥ 1770 N/mm2

GEOBRUGG ULTRACOATING® GEOBRUGG SUPERCOATING® GEOBRUGG SUPERCOATING® GEOBRUGG SUPERCOATING®

65 mm 65 mm 63 mm 143 mm

3.5 m 3.5 m 3.5 m 3.5 m

40 m 30 m 20 m 20 m

140 m2 105 m2 70 m2 70 m2

0.74 kg/m2 1.65 kg/m2 3.3 kg/m2 2.60 kg/m2

104 kg 175 kg 231 kg 182 kg

10 kN 30 kN / 45 kN 50 kN / 75 kN 45 kN/ 70 kN

80 kN 180 kN / 240 kN 280 kN / 370 kN 230 kN / 300 kN

40 kN 90 kN / 120 kN 140 kN / 185 kN 115 kN / 150 kN

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ETA certificate no.

CE no.

Wire diameter

Spiral wire diameter 1 x 3

Tensile strength of wire mesh

Corrosion protection

Mesh width

Number of meshes, top to bottom 7.0 pcs/m 7.0 pcs/m 7.2 pcs/m 3.3 pcs/m

Number of meshes, side to side 12.0 pcs/m 12.0 pcs/m 12.0 pcs/m 5.6 pcs/m

Tensile strength, horizontally (for the purposes of comparison only – not for use in dimensioning) ≥ 65 kN/m in accordance with LGA test report 11/2013 ≥ 150 kN/m in accordance with LGA test report 04/2010 ≥ 250 kN/m in accordance with LGA test report 11/2013 ≥ 220 kN/m in accordance with LGA test report 11/2013

TECCO® / SPIDER® roll

Roll edges Mesh ends knotted and twisted Mesh ends knotted and twisted Mesh ends knotted and twisted Mesh ends knotted and twisted

Roll width

Roll length

Total area per roll

Weight per m2

Weight per roll

Load-bearing resistance for load transfer (for use in dimensioning) P33 spike plate P33 / P66 spike plates P33 / P66 spike plates P33 / P66 spike plates

Load-bearing resistance of mesh to tensile loads parallel to the slope and concentrated at certain points (ZR)

Load-bearing resistance of mesh to perforations parallel to the nails (2 · PR)

Load-bearing resistance of the mesh to shearing at the top edge of the spike plate (PR)

Service life*

Climatic category C2: temperate, rural areas in accordance with EN ISO 12944-2 and ISO 9223 > 120 years 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.

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Our engineers and partners analyze the situation together with you and then, working together with local engineering firms, present their solutions. Painstaking planning is not the only thing you can expect from us, however; since we have our own production plants on four continents, we can offer not only short delivery times but also the best possible customer service right on your doorstep. To ensure your project runs smoothly, we deliver pre-assembled and clearly labeled system components right to the construction site. Here, we can also provide technical

support if required – from installation right through to final acceptance of the structure.

Product liabilityRockfalls, landslips, debris flows, shallow landslides and avalanches are natural events and therefore cannot be calculated. For this reason, it is impossible to determine or guarantee absolute safety for persons and property using scientific methods. This means that, to provide the desired level of protection, protective systems must be monitored and serviced regularly and

appropriately. In addition, events that exceed the system’s calculated absorption capacity may cause damage. The use of non-original parts as well as severe corrosion, such as might be caused by environmental pollution, can reduce the level of protection provided.

Geobrugg AGGeohazard SolutionsAachstrasse 11 • CH-8590 Romanshorn • SwitzerlandPhone +41 71 466 81 55 • Fax +41 71 466 81 50www.geobrugg.com • info@geobrugg.com

A company of the BRUGG GroupISO 9001 certifi ed

Geobrugg, a reliable partner.