Glossary

• Antisubmarine net: on this web site it refer to nets that where used during the war to protect boat against torpedo. Recycled and/or manufactured today to make fences for rock fall protection
• Avalanche nets: on this web site it refer to a fence made out of steel wire rope cables, steel post and supporting steel wire cables, they are flexible structures installed in mountainous area to prevent the creping and sliding which prevent the breaking away of the snow slide thus preventing avalanches.. They can also resist small avalanches or rock fall that could occur between two rows of snow nets.
• Avalanche prevention structure: See Avalanche nets
• Avalanche protection nets: See Avalanche nets
• Avalanche protection systems: snow fence, snow racks, avalauncher, remote avalanche triggering system.(Avalhex).
• Avalanche: a large mass of snow, ice, soil or rock, which detaches from a mountain slope and slides or falls suddenly downward; the sliding or falling of rocks, snow or other materials down the side of a mountain
• Avalauncher: a cannon, powered by compressed nitrogen that can hurl a two-pound projectile 2,000 yards. It is used to break up unstable snow, allowing it to avalanche and leaving more stable snow in place
• Breakaway zone: the area where an avalanche is most likely to start or break away.
• Cable netting: See Rock fall protection systems
• Catch fences: See Rock fall protection systems
• Containment nets: See Rock fall protection systems
• Debris Flow Barriers: See Debris Flow Management Systems
• Debris Flow Management Systems: usually installed in mountainous region were forest fires happened , it is a fence like a rock fall fence that intercept the flow of debris such as rocks and wood
• Kilijoules: Kilojoule is an unit used for measuring large amounts of energy or work.(1kJ= 1000 J) Joule. 1 Joule = 1 kg * m²/s²
• Kinetic energy: Kinetic energy is the energy of motion. An object which has motion - whether it be vertical or horizontal motion - has kinetic energy. There are many forms of kinetic energy - vibrational (the energy due to vibrational motion), rotational (the energy due to rotational motion), and translational (the energy due to motion from one location to another). KE = ½ * m * v²
• Ring net: See Antisubmarine net
• Rock fall: rocks rolling, bouncing or falling.
• Rock fall barrier: See Rock fall protection systems
• Rock fall fence: See Rock fall protection systems
• Rock fall netting systems: See Rock fall protection systems
• Rock Fall Protection barrier: See Rock fall protection systems
• Rock fall protection systems: on this web site it refers to a fence made out of steel wire rope cables, steel rings or wire mesh with steel post anchored on the ground to stop and intercept rolling or bouncing rocks to protect roads, houses, railways etc.
• Rock fall Restraining Net: See Rock fall protection systems
• Rock fall systems: See Rock fall protection systems
• Rock net barrier: See Rock fall protection systems
• Rock Slope Netting: wire rope cables weaved in a specific pattern to create a net and anchored on the hill or ground to keep in place large or smaller rocks from falling or sliding. Also called wire mesh.
• Snow Avalanche Barriers: See Avalanche nets
• Snow nets: See Avalanche nets
• Snow racks: Made of wood or metal, they look like residential wooden fence with the crosspieces either vertical or horizontal and installed inclined like a ramp and designed to prevent the sliding and creeping of the snow.
• Snow Retention: See Avalanche nets
• Static Avalanche System: See Avalanche nets
• Wire mesh: metal steel wires weaved to form a screen. Similar to chain link mesh but stronger, the wires are twisted two or three times in the link to prevent the link to come apart.