Cable logging, also referred to as skyline logging, is a logging method primarily used on the West Coast of North America with yarder, loaders, and grapple yarders, but also in Europe (Austria, Switzerland, Czech Republic, France, Italy).
High Lead logging in Western OregonCable grue Larix 3T, installed on agricultural tractor
The cables can be rigged in several configurations.
There are two classes;
High lead logging, in which a simple loop of cable runs from the yarder out through pulley blocks anchored to stumps at the far end of the cut.
Skyline, in which a carriage, pulled by hauling cables, runs along a skyline cable, providing vertical lift to the logs.
There are other varieties of loading systems as well.
While skyline logging requires additional setup, the vertical lift of the skyline allows faster yarding, which can outweigh the additional labor costs, especially on larger harvest units.
Since the 1980s grapple yarders have become popular.
Skyline and grapple yarding, however, require more complex, and expensive equipment.[1] A traditional highlead or gravity system will function with just two cables, a skidding line. As the names imply the skidding line is used to drag the logs in, and the haulback line is used to drag the skidding line back out for the next turn (or group of logs).
A skyline system will add a third line---the skyline whose function is to hold the skidding line and the haulback line off the ground or 'in the sky'.
The yarder itself is located on a landing, a flat area on top of the ridge that is being logged.[2] After the trees are retrieved by the yarder, the limbs are bucked (removed) and the logs are then placed in piles awaiting transport.
cable, logging, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, 2022, learn. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Cable logging news newspapers books scholar JSTOR May 2022 Learn how and when to remove this template message Cable logging also referred to as skyline logging is a logging method primarily used on the West Coast of North America with yarder loaders and grapple yarders but also in Europe Austria Switzerland Czech Republic France Italy High Lead logging in Western OregonCable grue Larix 3T installed on agricultural tractorThe cables can be rigged in several configurations There are two classes High lead logging in which a simple loop of cable runs from the yarder out through pulley blocks anchored to stumps at the far end of the cut Skyline in which a carriage pulled by hauling cables runs along a skyline cable providing vertical lift to the logs There are other varieties of loading systems as well While skyline logging requires additional setup the vertical lift of the skyline allows faster yarding which can outweigh the additional labor costs especially on larger harvest units Since the 1980s grapple yarders have become popular Skyline and grapple yarding however require more complex and expensive equipment 1 A traditional highlead or gravity system will function with just two cables a skidding line As the names imply the skidding line is used to drag the logs in and the haulback line is used to drag the skidding line back out for the next turn or group of logs A skyline system will add a third line the skyline whose function is to hold the skidding line and the haulback line off the ground or in the sky The yarder itself is located on a landing a flat area on top of the ridge that is being logged 2 After the trees are retrieved by the yarder the limbs are bucked removed and the logs are then placed in piles awaiting transport Contents 1 Manufacturers 2 Videos 3 See also 4 ReferencesManufacturers editValentini Italy Greifenberg Italy Cable grue Larix Czech Republic Mayr Melnhof ForestTechnik Austria Madill Sidney British ColumbiaVideos editForest cableways installed on an agricultural tractor YouTube See also editWashington Iron Works Skidder Swing yarder Skidding forestry Ax Men Skyline loggingReferences edit Olund Dexter 2001 The Future of Cable Logging PDF The International Mountain Logging and 11th Pacific Northwest Skyline Symposium 2001 Studier Donald Binkley Virgil 1074 Binkley OSU Book Stores Inc p 82 nbsp This industry related article is a stub You can help Wikipedia by expanding it vte nbsp This article about forestry is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Cable logging amp oldid 1214454574, wikipedia, wiki, book, books, library,
