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Chainsaw Vibrations, a Useful Parameter for the Automatic Tree Volume Estimations and Production Assessment Of
655 A publication of CHEMICAL ENGINEERING TRANSACTIONS VOL. 58, 2017 The Italian Association of Chemical Engineering Online at www.aidic.it/cet Guest Editors: Remigio Berruto, Pietro Catania, Mariangela Vallone Copyright © 2017, AIDIC Servizi S.r.l. ISBN 978-88-95608-52-5; ISSN 2283-9216 DOI: 10.3303/CET1758110 Chainsaw Vibrations, a Useful Parameter for the Automatic Tree Volume Estimations and Production Assessment of Felling Operations Raimondo Gallo*a, Filippo Nallia, Luca Corteseb, David Knollseisenc, Werner c a Noggler , Fabrizio Mazzetto aFaculty of Science and Technology, Free University of Bozen (FUB), Piazza Universitá 5, 39100 Bolzano (Italy) bMechanical and Aerospace Engineering Department, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome (Italy) cAzienda Provinciale Foreste e Demanio, Via Michael-Pacher 13, 39100 Bolzano (Italy) [email protected] An innovative approach for the automatic operational monitoring of motor-manual felling activities with chainsaw is here described and discussed. This new system of assessment can be considered as a solution for Precision Forestry (PF) applications and can be employed as a ICT tool for the management of the forest companies. Aim of the proposed system is to manage operational information such as: a) positioning of each felling operation inside the forest, b) measurement of the time spent to carry out the felling, c) estimation of the size of every felled tree, and in the end, d) the analysis of the productivity of the felling operations. This experience is based on the operative principle which considers that the lumberjack, during the actual cutting, drives the chainsaw with the engine at the highest number of rpm. -
Felling Hazard Trees with Explosives Bob Beckley, Project Leader
United States Department of Agriculture Safety and Health Forest Service Technology & Development Program April 2008 6700 0867–2325–MTDC Felling Hazard Trees With Explosives Bob Beckley, Project Leader elling hazard trees is extremely dangerous. It can also be dangerous to leave hazard trees standing, because FFthey can fall unexpectedly. Removing hazard trees with explosives (figure 1) can be a safe alternative to cutting the trees down. Workers can be a safe distance away when the hazard tree falls. Explosives and ignition systems are safe and reliable when used properly. The Forest Service, U.S. Department of Agriculture, explosives program is one of the agency’s safest programs. Certified blasters need a “Hazard Trees” endorsement on their certification card (figure 2) to Figure 1—Fireline explosives have been wrapped around the trunk of this hazard tree. Note the catface (scar on the trunk), splits, cracks, and the fell hazard trees with explosives. separation of part of the trunk. Trees with these warning signs can be too dangerous for most sawyers to fell, but are excellent candidates for felling with explosives. -Blasting & Explosives Certificate- Agency: Issue Date: • Some trees with excessive decay or fire Name: DOB: damage are too hazardous for sawyers to License No: State: fell safely. Often, explosives can be used -Work Authorized- Height: Weight: to fell such trees. Initials Issued BlasteBy: r-In-Training • Trees felled with explosives have jagged Photo stumps that appear more natural than Blaster Examiner ApprovedBla By:ster sawn stumps, an advantage in • Transport/SSupervisortore/Inspect • 10 Holes wilderness settings. FS-6700-27 (03/08) Front ice, only certified • Rocks/Stumps/Ditches • In the Forest Serv • Quarry blasters with a “Hazard Trees” • Demolition explosives to • Destroy Explosives endorsem ent can use • Hazard Trees trees. -
STIHL MSA 220 C Owners Instruction Manual
Instruction Manual STIHL MSA 220 C Manual de instrucciones WARNING To reduce the risk of kickback injury use STIHL reduced kickback bar and STIHL low kickback chain as specified in this manual or other available low kickback components. ADVERTENCIA Para reducir el riesgo de lesionarse como resultado de un culatazo, utilice la barra y la cadena de contragolpe reducido de la forma especificada en este manual o de otros componentes reductores de contragolpe. WARNING ADVERTENCIA Read Instruction Manual thoroughly before use and Antes de usar la máquina lea y siga todas las precauciones follow all safety precautions – improper use can cause de seguridad dadas en el manual de instrucciones – el uso serious or fatal injury. incorrecto puede causar lesiones graves o mortales. Instruction Manual 1 - 63 Manual de instrucciones 64 - 131 English Contents 8.2 Bucking . 24 1 Introduction . 3 8.3 Limbing . 25 2 Guide to Using this Manual . 3 8.4 Pruning . 26 2.1 Signal Words. 3 8.5 Cutting Logs Under Tension . 27 2.2 Symbols in Text . 3 8.6 Felling . 28 3 Main Parts . 4 9 Battery Safety. 31 3.1 Chain Saw and Battery . 4 9.1 Warnings and Instructions . 31 4 Safety Symbols on the Products . 5 10 Maintenance, Repair and Storage . 33 4.1 Chain Saw . 5 10.1 Warnings and Instructions . 33 Original Instruction Manual 4.2 Battery . 5 11 Before Starting Work . 34 5 General Power Tool Safety Warnings. 6 11.1 Preparing the Chain Saw for Operation . 34 5.1 Introduction . 6 12 Charging the Battery . 34 5.2 Work Area Safety . -
The Southeastern Forester, Summer, 2009 Page 1 Page 2 the Southeastern Forester, Summer, 2009 MESSAGE from the CHAIR
TheThe SoutheasternSoutheastern ForesterForester "Representing the Forestry Profession in Alabama, Florida and Georgia" Volume 28, Number 3 Summer 2009 The Southeastern Forester, Summer, 2009 Page 1 Page 2 The Southeastern Forester, Summer, 2009 MESSAGE FROM THE CHAIR Welcome to the First Edition of our Annual Meeting will continue to A publication of SESAF, new Southeastern Forester be held in the first quarter of each the Southeastern Society of electronic newsletter! We hope year, hosted by the prior year’s American Foresters, you like the new format and Chairman with the help of the P.O. Box 2945 delivery vehicle. If you would incoming Chairman. The LaGrange, Georgia 30241 prefer a hard copy version, it’s just Reception and Silent Auction will (706) 845-9085 FAX (706) 883-8215 a click away (hit your print button). start at 6:00 pm CST on Sunday [email protected] About 10% of our members do not evening, February 07, after the EXECUTIVE COMMITTEE: have an email address. If you know OEW. We have a full slate of someone that does not have access speakers already confirmed for all Chair Mark Thomas to email, print them a hard copy or day Monday, February 08, and 847 Willow Oak Dr. ask them to call our office (706-845- Tuesday, wrapping up at 12:00 Birmingham, AL 35244-1614 205-733-0477 (O) 9085) and a paper copy will be promptly mailed noon. Dr. David South has worked extremely 205-288-7162 © to them. Many thanks to Doris Jefferson and hard and has put together a tremendous slate of Email:[email protected] Molly Allen for doing an outstanding job internationally renowned speakers. -
Tree Felling & Rigging Safety
Tree Felling & Rigging Safety Presented by: Kevin K. Eckert Arbor Global ISA Board Certified Master Arborist WE-1785BU Tree Felling & Rigging Tree felling and rigging required to best manage tree function, health and safety Tree Felling & Rigging Felling and rigging is physical and potentially hazardous • Logs and branches may be very heavy • Defects may be present, but not visible to unqualified person • Requires skilled, well-trained workers: • All qualifications for personnel and equipment • Understand tree anatomy and structure • Practical knowledge in tree biomechanics • Understand dynamic and shock loading of equipment • Advanced experience and ability in rigging Tree Felling & Rigging Safety Too often, unqualified individuals fell and rig trees or Experienced workers not trained or ignore safety practices • Significantly increases risk to worker and public • Results in injuries and sometimes fatalities • Damages trees and property Tree Felling & Rigging Accidents Most common felling and rigging accidents: • Crush • Lacerations and punctures • Chain saw cuts Tree Felling & Rigging Safety Always follow safety requirements: • Applicable laws and regulations (OSHA) • ANSI Z133.1 standards • Manufacturer’s tool and equipment instructions Inspection of Gear Correct equipment • Designed and rated for felling and rigging Adequate size and strength for loads • Working load limits conformed • Load <20% of rated and calculated tensile strengt h • Considering age/wear and knots Inspection of Gear Inspect all equipment according to manufacturer’s -
How to Cut Down a Tree: Safe and Effective Tree Felling, Limbing and Bucking
FWM-00200 UNIVERSITY OF ALASKA FAIRBANKS UNIVERSITY OF ALASKA FAIRBANKS How to Cut Down a Tree: Safe and Effective Tree Felling, Limbing and Bucking The occasional, nonprofessional sawyer will greatly benefit by learning the basic methods used in tree felling and cutting. Many Alaskans use chainsaws around their homes trimming, log home building and more. and properties. In this publication basic techniques used to cut down a tree and render it into logs and According to the federal Occupational Safety and firewood will be presented. The term “sawyer” will Health Administration (OSHA), “More people are refer to the person cutting down, or “felling,” the tree killed while felling trees than any other logging activ- and making products from it, including firewood, ity.” A minor chainsaw cut can be dangerous and hard cabin and saw logs. to treat in the field. Safety must be the top priority when operating a chainsaw for any use. More dan- Private forest landowners often harvest timber to gerous than injuries caused by the running chainsaw manage and improve their woodlot and make use of itself are those injuries caused when the sawyer or a trees that have been windblown, killed by insects or helper are struck by something that falls out of the selected for removal. In forested regions of Alaska, the tree or is catapulted into the air by the act of the tree chainsaw may be the most common power hand tool being felled. Again, safety first. and it is also recognized as the most hazardous power hand tool. It is imperative that the operator/sawyer Tree cutting can be dangerous whether done by a and those working close by pay special attention to homeowner or by commercial tree cutters. -
2019 Lumberjack Full
P.O. Box 388 • Elkins, WV 26241 • Office: (304) 636-1824 • Fax: (304) 636-4020 • www.foresCesDval.com Dear Prospective Contestant: The 83rd Mountain State Forest Festival will be held in Elkins, West Virginia, September 28 – October 6, 2019. The Lumberjack Contests will be held at the Coronation Platform on the campus of Davis and Elkins College on Saturday morning, October 5, 2019. Registration begins at 7:00 AM; events begin at 8:30 AM. A list of events and prize money is shown in the following table. 1st 2nd 3rd 4th 5th 6th Event Place Place Place Place Place Place Chain Saw $250.00 $200.00 $150.00 $100.00 $75.00 $50.00 World Champion $250.00 $200.00 $150.00 $100.00 $75.00 $50.00 Two-Person Each Each Each Each Each Each Crosscut World Championship $200.00 $125.00 $75.00 $50.00 $25.00 Jack and Jill Each Each Each Each Each Crosscut Using Any Saw Jill and Jill Crosscut $200.00 $125.00 $75.00 $50.00 $25.00 Using Any Saw Each Each Each Each Each World Championship $250.00 $200.00 $150.00 $100.00 $75.00 $50.00 Tree Felling Chopping $250.00 $200.00 $150.00 $100.00 $75.00 $50.00 Axe Throwing $150.00 $100.00 $75.00 $50.00 $25.00 $15.00 * Grand Champion $400.00 $300.00 $150.00 The total amount of prize money is $7,290.00, plus Springboard and Hard Hit awards. An entry fee of $10.00 per person, per event must be submitted with your entry form. -
Tips for Felling a Tree Keep You Safe, the Job Easier
Tips for felling a tree keep By Bill Kohlbrand ou’ve read the preceding Y“how-to” article about chainsaw sense and wood cutting and are familiar with the techniques. Now that you know about compres- sion and tension, we’ll talk about felling a tree. To determine the “com- pression” side of the tree, we size it up using some 1 4 criteria: • Lean • Limb placement • Snow load • Wind Usually, these few fac- tors will determine which way a tree wants to fall. These other factors will help determine the intend- ed lay of a tree: • Species (woods of dif- ferent species vary in strength and bending 2 5 ability) • Powerlines and other overhead hazards • Live or dead (as a rule, dead wood doesn’t bend as well as live wood, so its hinge may be more brittle). • Other nearby trees • Branches of nearby trees • Stumps or rocks that can cause a tree to jump off of its stump • Tree defects such as rot, dead limbs, catfaces (blemishes in wood caused by a partly healed 3 6 scar) and vertical cracks. If the weight of a tree 24 BARNYARDS & BACKYARDS you safe, the job easier causes the tree to split try, keep working until they of wood. You need sound least 20 feet – better if it vertically up the tree, a do, but try not to get too wood to form a hinge. Place puts you behind a big, solid “barber chair” can occur. deep. Notch the tree to the a wedge in the backcut tree. Avoid using a snag for These can be quite direction you want it to fall. -
Wood from Midwestern Trees Purdue EXTENSION
PURDUE EXTENSION FNR-270 Daniel L. Cassens Professor, Wood Products Eva Haviarova Assistant Professor, Wood Science Sally Weeks Dendrology Laboratory Manager Department of Forestry and Natural Resources Purdue University Indiana and the Midwestern land, but the remaining areas soon states are home to a diverse array reforested themselves with young of tree species. In total there are stands of trees, many of which have approximately 100 native tree been harvested and replaced by yet species and 150 shrub species. another generation of trees. This Indiana is a long state, and because continuous process testifies to the of that, species composition changes renewability of the wood resource significantly from north to south. and the ecosystem associated with it. A number of species such as bald Today, the wood manufacturing cypress (Taxodium distichum), cherry sector ranks first among all bark, and overcup oak (Quercus agricultural commodities in terms pagoda and Q. lyrata) respectively are of economic impact. Indiana forests native only to the Ohio Valley region provide jobs to nearly 50,000 and areas further south; whereas, individuals and add about $2.75 northern Indiana has several species billion dollars to the state’s economy. such as tamarack (Larix laricina), There are not as many lumber quaking aspen (Populus tremuloides), categories as there are species of and jack pine (Pinus banksiana) that trees. Once trees from the same are more commonly associated with genus, or taxon, such as ash, white the upper Great Lake states. oak, or red oak are processed into In urban environments, native lumber, there is no way to separate species provide shade and diversity the woods of individual species. -
Felling, Bucking and Limbing Trees
Safety AGRICULTURAL MU Guide PUBLISHED BY MU EXTENSION, UNIVERSITY OF MISSOURI-COLUMBIA muextension.missouri.edu/xplor Felling, Bucking and Limbing Trees Bruce E. Cutter, School of Natural Resources David E. Baker, Extension Safety Specialist Whether you are using your chain saw to cut fire- there is an unknown amount of wood holding the wood, trim trees or harvest large timber, you will be tree up, you may not able to control the direction of performing three basic operations — felling, bucking fall of the tree or it may fall prematurely, endangering and limbing of trees. Felling involves cutting the you and others around you. standing tree and dropping it in the place you want it. Lean. Most trees display some indication of the Limbing is the removal of the branches from either direction in which they will tend to fall. This is shown standing or downed trees. Bucking is the process of by an uneven crown, as when most of the branches cutting the downed tree into appropriate lengths. For are on one side of the tree, or by a lean of the trunk of information on the selection and safe use of a chain the tree itself. An easy way to determine the lean of a saw, see MU publication G 1959, Basic Chain Saw tree is to stand back 25 to 50 feet and use a plumb line Safety and Use. to sight on the trunk of the tree. It is best to do this from two sides. This publication is not intended for the profes- Wind. The wind will push the crown of the tree. -
The Knothole, November 24, 1969
SUNY College of Environmental Science and Forestry Digital Commons @ ESF The Knothole College Archives 11-24-1969 The Knothole, November 24, 1969 SUNY College of Environmental Science and Forestry Student Body Follow this and additional works at: https://digitalcommons.esf.edu/knothole Part of the Communication Commons, Creative Writing Commons, and the Environmental Studies Commons Recommended Citation SUNY College of Environmental Science and Forestry Student Body, "The Knothole, November 24, 1969" (1969). The Knothole. 179. https://digitalcommons.esf.edu/knothole/179 This Newspaper is brought to you for free and open access by the College Archives at Digital Commons @ ESF. It has been accepted for inclusion in The Knothole by an authorized administrator of Digital Commons @ ESF. For more information, please contact [email protected], [email protected]. FOREST FIRES THE KNOTHOLE Forest fires in the United States alone, Published: Every Monday by Alpha Xi Sigma destroy enough timber annually to build 25, Deadline: Monday A.M. one week before 000 homes, furnish baseball bats to every publication player in the nation from Little leagues to Major Leagues; and print all the comic books, Articles: Please sign name and so indi magazines and newspapers in the nation! cate if you do not wish to have Everyone has a stake in forest fire pre name printed. We welcome all vention. Aside from the aesthetic values articles, gossip, notices, sug of the woods involved, the appreciable loss gestions, and new staff members. of tinfer by forest fires is one of the con Editors: John Boreman Marlene Halinar tributing factors in the high cost of lum Norman Booth Janine Newmiller ber. -
In Ashley County, Arkansas
. .".. Five Years of Change in an Old-Growth Pine-Hardwood Remnant in Ashley County, Arkansas USDA Forest Service, Southern Research Station, P.O. Box 3516 UAM; Monticello, AR 71656 Correspondence: [email protected] Abstract.-The Levi Wilcoxon Demonstration Forest near Hamburg, Arkansas is an industrially-owned remnant of old-growth pine and hardwodds. Some of the loblolly (Pinus taeda L.) and shortleaf (Pinus echinata Mill.) pine in this stand are over 200 years old, and numerous individuals exceed 90 cm in diameter and 30 m in height. A 2000 survey of a portion of this tract found that 27 tree species contributed an average of 387.5 live stemsiha and 31.8 m2/haof basal area. An inventory of the same plots in 2006 yielded noticeable declines in density (now down to 342.5 stemslha) and basal area (now 28.2 m2/ha). Much of this loss came in the aftermath of a windstorm in May 2003, which felled a number of overstory pines. Loblolly pine decreased from 49.6 stemslha and 13.2 m2/ha in 2000 to 42.1 trees/ha and 11.2 m2/ha in 2006, while shortleaf pine declined from 21.7 treeslha and 5.0 mz/ha to 14.6 trees/ha and 3.5 m2/ha. Further pine mortality came from smaller-scale windthrow, lightning, and bark beetle infestations. Some hardwoods were also toppled by storms or crushed by falling trees, but most appear to have succumbed to drought, competition, and salvage logging. However, hardwood basal area remained virtually unchanged over this period, signifying adequate diameter growth and midstory recruitment.