The future of cable logging university of washington. Cable yarding systems handbook a comprehensive reference handbook for cable logharvesting systems used in b. We deal with full time professional loggers every day, because the timber industry is still huge here in the pacific northwest. Grapple cable skidders are machines used to tow the logs to the landing.
When you buy chokers from westech rigging supply, youre dealing with a company that has all the right equipment, and trained people using it. Each of the woodlands managers, logging superintendents, and operating personnel who. Pdf cable yarding systems are widely used in mountainous forests of austria. Although they are addressed by some state standards, they are not covered by the osha standard. In forestry, the term logging is sometimes used narrowly to describe the logistics of moving wood from the stump to somewhere outside the forest, usually a sawmill or a lumber yard. This includes standard 6x19 choker cable and even high performance swaged or maximum strength impact swaged. High lead logging, in which a simple loop of cable runs from the yarder out. We dont make a handful of chokers per month, or per year. Cable logging systems food and agriculture organization. Cable logging systems typical examples of major cable logging systems are shown in this manual and the factors which affect the productivity of each system are discussed as well as their advantages and disadvantages, in order that readers can decide which cable logging system is the most suitable when planning their forest harvesting. Oregon osha revises guidelines for tethered logging. No matter where the logging operation is in the world, we can deliver tough, compacted, consistent products to our distributors and their end customers. They are covered by the general requirements for logging machines.
The goal of this paper is to determine optimal road spacing ors of. The hazard assessment for helicopterlogging operations using helicopters capable of lifts exceeding 2250 kg must be to a standard that is more rigorous than that required for cable or ground operations because of the extraordinary disturbance caused by high rotor wash winds. Estimating yarding costs for the clearwater cable yarder. Keller provides a wide range of electronic logbook solutions, from elogs to fleet technology to data management. We have a ton of professional logging customers that we supply all year long, and many of them use ring chokers like these in combination with a toggle for yarder logging. Well help you go beyond the eld to fully comply with hoursofservice regulations and navigate complex topics, like personal conveyance and unassigned driving events. In addition to common rigging shackles, we also offer specialty logging hardware like cat hooks, buzzard hooks and more. A comprehensive reference handbook for cable logharvesting systems used in b.
Shown here is an example of a tsy 255 the future is already here. If youre unsure what type of wire cables or wire cable accessories you need, call us for help from our product specialists with expertise in wire roperigging supplies. This book contains rules for safety standards for logging operations, as adopted under the washington industrial safety and health act of 1973 chapter 49. Full text of cable logging systems internet archive. Aerial logging a logging system which fully suspends the logs such as done by helicopters or balloons. The falcon winch assist is designed to allow logging contractors to use it as a multi purpose machine. Yes, our skidding supplies still fall under our regular shipping policy for o. Whether youre a professional logger or doityourselfer in need of the best in logging equipment, northern tool is the place to go. Ive seen lots of videos of logging crews with huge yarders, remote controlled, powered by a giant diesel motor, etc. A student from twoa talks about the cable logging program. And for replacing the nub on your cable in the field, our wedgetype quick ferrules are a big hit. A traditional highlead or gravity system will function with just two cables, a skidding line. Without lift, the logs that were being skidded by the ground lead system would get hung up on stumps and rocks.
Pdf optimal road spacing of cable yarding using a tower yarder in. The hazard assessment for helicopter logging operations using helicopters capable of lifts exceeding 2250 kg must be to a standard that is more rigorous than that required for cable or ground operations because of the extraordinary disturbance caused by high rotor wash winds. The operator then engages the mainline drum winch and yards the log to the machine. The forest products industry often uses intermediatesupport cable logging systems to transport logs from the harvest site to a staging area. A wide variety of well logging cable options are available to you, there are 266 suppliers who sells well logging cable on, mainly located in asia. Deflection is critical in logging with cable systems. Binkley and a great selection of related books, art and collectibles available now at. The cables can be rigged in several configurations.
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. Popular logging books showing 150 of 66 serena hardcover by. The objective of this study was to determine the current use and applications of rigging configurations and equipment in new zealand cable logging operations. This includes logging blocks in a variety of sizes and styles. North bend cable logging system vannatta forestry, logging. A smallscale harvesting system has been used in timber harvesting in some countries i. Cable yarding consists of a system that uses cables to transport material from the woods to the landing. Emphasis was placed on appropriate rigging configuration selection, given their perceived advantages and. Compendium of major cable logging systems book, 1978. One of the original and most complete references to cable logging in north america. Material may be fully or partially suspended for all or a portion of the yarding distance. Cut big jobs down to size easily using log splitters, chainsaws, saw mills and more. Our wire rope program includes both regular and premium swage wire rope along with a full range of diameters in general purpose rope. Worksafebc produced this standard practice manual at the request of industry, labour, and other interested parties.
On of the more innovative cable logging systems is known as the north bend system. Numerous and frequentlyupdated resource results are available from this search. The safe work procedures detailed in this handbook are applicable to both coastal and interior logging operations. Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. It comes with the option of a quick hitch so it can also operate as a loader, conventional digger or as a loader or shovelling machine. Yarding examples of cable yarding systems from the washington state safety standards for logging. Serving the international forest industry cable logging workshop. Strategic planning and system selection are stressed. The chainsawr is now offering the same premium forestry products from our showroom in our online store. The log is hooked with the mainline, or the mainline is attached to one or more preset chokers. Mar 24, 2016 oregon osha revises guidelines for tethered logging. Employers intending to use winch or cable assisted systems for steep slope logging must ensure that the harvesting machine was specified by.
These high lead systems could skid logs a much longer distance with less effort mainly due to the lift. Shown here is a drawing of what is known as the high lead logging configuration. In the demanding world of the logging industry, the name of the game is highest strength and longest life. Productivity and cost of a smallscale cable yarder in an.
Browse a variety of top brands in log skidding accessories such as norwood industries and timber tuff tools from the product experts. Workshop overview the 4day cable logging workshop covers all phases of cable harvesting including systems, equipment, and rigging requirements to meet environmental and economic goals. Harvesting systems and equipment in british columbia feric handbook, issn 07018355. North bend cable logging system three line logging with 2 drums on of the more innovative cable logging systems is known as the north bend system. As a cable logging specialist, i help logging companies and their crews improve their safety and operational practices. Hourly yarding costs 1987 for the clearwater yarder includes all new equipment item dollarslhr yarder and truck carrier 38. A redesigning the tb 255b slr results in a versatile yarder. Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel. Featuring wallingford premium golden bell chokers, choker chains, log slides, hooks, clevises, hammerlocks, and the list goes on and on. This handbook cable yarding systems handbook is a reference for cable log harvesting systems used in b. However, formatting rules can vary widely between applications and fields of interest or study. Not to be confused with cable systems which use cables and supports. Single drum and mainline system this is the simplest cable yarding system.
Whether we like it or not cable logging is moving to around the clock mechanized high production systems in plantation. This book is a stateoftheart document on cable logging systems. We produced highquality products including boots,chaps,and hardware. In particular, selecting the optimal cable yarding system and machinary on steep. Hb12 copublished by forest engineering research institute of canada. Systems must be designed and laid out to avoid this possibility. Logging systems are also used to manage forests, reduce the risk of wildfires, and restore ecosystem functions. Cable logging news newspapers books scholar jstor september 2016 learn how and when to remove this.
Whisnant and a great selection of related books, art and collectibles available now at. Workers should never work in the bight of the line. Oct 03, 2011 a student from twoa talks about the cable logging program. A method is presented to assist in the analysis and design of these cable systems. Permission to reprint for sale granted to oregon state university by the forest service region 6, usda, 1974, photocopied by oregon state university bookstores, 1976. Turn to one company for all your electronic logging needs. Advantages and disadvantages of each system will be discussed. The cables are strung in corridors through the stand. Bhge offers cased hole wireline cable heads for various wireline sizes, with a range of diameters, fish necks, materials and connections, in conewasher type or rope socketclamp ring type, to align with the specific line size on which they will be installed. Additionally, these chokers feature a heavyduty galvanized thimble in the eye, which acts as a buffer between the ring and the choker cable itself. Other systems need three lines, though the north bend system uses a.
High lead cable system shown here is a drawing of what is known as the high lead logging configuration. It describes rigging configurations that have been. Logging equipment to help you and your crew clear areas quickly and easily. Analysis of intermediate support cable logging systems. Best eld devices 2020 top 20 electronic logging devices. Cable logging, also referred to as skyline logging, is a logging method primarily used on the. The modern high lead systems as pictured all work on the same basic principle as high lead logging with a steam donkey. The upper secondary line is looped out around the woods with several blocks on the back side of the job. Harvesting systems and equipment in british columbia ministry of forests forest practices branch. By anchoring the haulback line laterally to the skyline, the butt rigging can be pulled all over the place. Active falling area the area within two treelength radius of where a faller or a mechanized falling machine is operating adverse gradeascending grade in the direction of travel. Little effort has been directed, however, toward field measurement of cable tensions for skyline logging systems to facilitate initial tensioning of unloaded skylines or to provide means of field checking to see whether skyline systems are overloaded. Here the lower main line is used for the skidding line. Cable failures can result from inadequate deflection, poorly maintained cables, trying to haul loads larger than the safe working load of the cables, and numerous other factors.
This is the most popular choker we sell for a couple of. We keep all the common types and sizes of wire rope in stock all year long. The book is a civil engineering handbook on winch and cable systems. It is a suitable rigging system for a swinging, but can also be used for logging as well. The international mountain logging and 11th pacific northwest skyline symposium 2001 267 figure 6.
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