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Geisshorn-Arensa snow nets

Avalanche Prevention - Geisshorn-Arensa snow nets 2012

Overview of the Geisshorn snow nets covered partially by snow, directly under the rockface

Avalanche Prevention - Geisshorn-Arensa snow nets 2012

Snow nets are installation friendly thus allow a considerable reduction of helicopter hours

Avalanche Prevention - Geisshorn-Arensa snow nets 2012

Another view of the helicopter transport and beautiful valley in the back

Avalanche Prevention - Geisshorn-Arensa snow nets 2012

Modular and lightweight structure allows fast and easy installation. All elements were pre-assembled in the valley first

Avalanche Prevention - Geisshorn-Arensa snow nets 2012

Pressure plates are a perfect solution for areas with permafrost since they do not require a concrete foundation with anchoring. The picture shows the retaining ropes. Such scheme allows perfect plate positioning and further ground movements

Avalanche Prevention - Geisshorn-Arensa snow nets 2012

Thanks to modular structure snow nets perfectly follow irregular terrain profile. Short sections follow the structure of the ground

Avalanche Prevention - Geisshorn-Arensa snow nets 2012

Overview of snow nets installed directly under the rockface. Here rockfall capacity is a must and an enormous advantage of Geobrugg's flexible snow net structures

Avalanche Prevention - Geisshorn-Arensa snow nets 2012

Our specialists are continuously monitoring installed solutions, here during winter period. Geobrugg wishes nice skiing in Switzerland!

 

System length

- 1890 m

 

Year of installation

2012

Initial situation

In winter 1999 (well remembered in the Alps for extraordinary snowfall and avalanches) National Road 28, to the ski resorts of Klosters and Davos, had to be closed. The inital location of those avalanches was the perimeter of this project. 

Description

To ensure that avalanches of such scale and influence would not emerge from the Geisshorn mountain, the Federal Roads Office (ASTRA) and the Forest and Natural Hazards Office of the canton Grison, (AWN) entrusted the engineering company of Tur GmbH, to plan a mitigation solution. Due to its location, under the rockface where  little rockfall is possible, Tur GmbH decided to use Snow Nets rather than rigid steel structures. This led to the installation of nearly 2000 [m] of Geobrugg avalanche protection barriers (so called Snow Nets).

Customer

Swiss Federal Road Office (ASTRA) / Tiefbauamt Graubünden

Engineering

Tur GmbH, Davos

Contractor

Bauunternehmung Vetsch Klosters AG

Protected object

Road, Building

Corrosion protection

Galvanized, GEOBRUGG SUPERCOATING

Your local contact

Kevin Coyle
 

Kevin Coyle

Regional Manager Northeast

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,3 Beaudet Terr,CT 06237 Columbia / United States Regional Manager Northeast

E-Mail

Saleh Feidi
 

Saleh Feidi

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,8921 Emperor Ave.,91775 San Gabriel, California / United States

E-Mail

John Kalejta
 

John Kalejta

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,KS 67226 Wichita / United States

E-Mail

Bob Lyne
 

Bob Lyne

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,8004 Windspray Drive,NC 27358 Summerfield / United States

E-Mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Natural Hazards
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

E-Mail

Tim Shevlin
 

Tim Shevlin

Natural Hazards
Geobrugg North America, LLC,OR 97302 Salem / United States

E-Mail