Avalanche snow bridge
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- See snow bridge for another meaning
An avalanche snow bridge or simply snow bridge is a type of rigid snow-supporting structure for avalanche control (avalanche defense). Avalanche bridges can be made of steel, prestressed concrete frames, or timber.[1] [2]
Snow bridges may superficially look similar to snow fences, but they act differently. Snow fences are built vertically and accumulate snow on their downwind side, while snow bridges are slanted or horizontal hold snow on their top side.
Snow bridges are fastened to the slope on the upslope side by tension anchors and on the downslope by compression anchors. [3]
See also
References
- ^ Photographs of avalanche defences, FAO corporate document repository
- ^ "Avalanche and torrent control in the Spanish Pyrenees"
- ^ "Steel snow bridges"