Etats-Unis
Etats-Unis

Schänis, State Road 17

State Road 17 / Gasterstrasse 8, 8718, Schänis, Suisse
2016
Client
State Department for Underground Construction, Canton St.Gallen, Switzerland
Ingénierie
Geobrugg AG, Geohazard Solution
Entrepreneur
Oberholzer Inc., Neuhaus, Switzerland
Objet protégé
Route/Rue, Bâtiment
Protection anticorrosion
GEOBRUGG SUPERCOATING
Zone stabilisée
300 m²
Hauteur de la pente
15 m
Inclinaison de la pente
30 ° - 85 °
Exposition
Nord-ouest
Situation de départ

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.

Géologie

Instable blocks of molasse conglomerate.

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.

Votre contact local

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Natural Hazards, Coastal erosion protection
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / Etats-Unis
Saleh Feidi
Saleh Feidi
Regional Manager California
Natural Hazards, Coastal erosion protection
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / Etats-Unis
John Kalejta
John Kalejta
Regional Manager Central US
Natural Hazards, Coastal erosion protection
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / Etats-Unis
Bob Lyne
Bob Lyne
Regional Manager Southeast
Natural Hazards, Coastal erosion protection
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / Etats-Unis
Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Tim Shevlin
Tim Shevlin
Sales Director
Natural Hazards
Geobrugg North America, LLC
Salem OR 97302 / Etats-Unis