Schänis, State Road 17 2016 - Geobrugg Schänis, State Road 17 2016 - Geobrugg
Schänis, State Road 17 2016 - Geobrugg Schänis, State Road 17 2016 - Geobrugg
Schänis, State Road 17 2016 - Geobrugg Schänis, State Road 17 2016 - Geobrugg
Schänis, State Road 17 2016 - Geobrugg Schänis, State Road 17 2016 - Geobrugg
Schänis, State Road 17 2016 - Geobrugg Schänis, State Road 17 2016 - Geobrugg

Schänis, State Road 17

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Street
State Road 17 / Gasterstrasse 8
ZIP code
8718
Place
Schänis
Country/Region
Switzerland
Year of installation
2016
Customer
State Department for Underground Construction, Canton St.Gallen, Switzerland
Engineering
Geobrugg AG, Geohazard Solution
Contractor
Oberholzer Inc., Neuhaus, Switzerland
Protected object
Road, Building
Systems
SPIDER® S3-130
Corrosion protection
GEOBRUGG SUPERCOATING®
Stabilized area
300 m²
Maximum slope height
15 m
Slope inclination
30 ° - 85 °
Protection measure
Active slope stabilization
Exposition
North-West
Geology

Instable blocks of molasse conglomerate.

Situation

The area was formed by glaciers. With climate change, the rock underneath, molasse conglomerate rock, has become more unstable. During the past few years sections of rock, some with volumes of around 1 m³, became dangerously loose and were in danger of eminent fall onto the road, the building below and the neighboring pastures.

The Swiss State Agency for Forest and Natural Hazards immediately alerted the regional road inspectorate and political community to the potential risk.

Description

As a short term emergency measure Geobrugg worked with the regional road administration and a local contractor to stabilize the most critical rock sections with SPIDER® S3-130.

As a long-term solution that ensures safe driving conditions for daily commuting, an anchored system was installed. Along the deep chasms all along the molasse bar, three levels of anchors were drilled. The higher and lower levels were drilled to a length of 4 m while the anchors of the middle rows were drilled to a length of 7 m. These anchors were drilled to a grid that measures 2.15 m x 2.15 m.

The whole project from planning to final acceptance took only six weeks.

Your local contact

Head office and production
Head office and production
 
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Algodones NM 87001 / USA
Phone +1 505 771 4080
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Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Natural Hazards
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / USA
Mobile +1 860 377 3230

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Saleh Feidi
Saleh Feidi
Regional Manager California
Natural Hazards
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / USA
Mobile +1 909 706 8964

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John Kalejta
John Kalejta
Regional Manager Central US
Natural Hazards
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / USA
Mobile +1 505 220 1404

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Bob Lyne
Bob Lyne
Regional Manager Southeast
Natural Hazards
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / USA
Mobile +1 336 337 0945

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Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Algodones NM 87001 / USA
Phone +1 505 771 4080
Mobile +1 505 400 0796

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Tim Shevlin
Tim Shevlin
Sales Director
Natural Hazards, Geotechnical products, Aquaculture
Geobrugg North America, LLC
4676 Commercial St. SE, PMB 174
Salem OR 97302 / USA
Mobile +1 503 423 7258

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