logging in or signing up Mechanized Logging BAWare Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 775 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: January 02, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Mechanized Logging Methods: Mechanized Logging Methods Mechanical felling, tree processing & forwarding equipment and systemsThere are different levels of mechanized logging methods ….: There are different levels of mechanized logging methods …. E.g. “Low Level”: chainsaw felling & tree processing – line skidding “Medium Level”: chainsaw felling – line skidding & tree processing at landing “High Level”: harvester felling and tree processing – forwarding logs to landingMechanized Logging Methods (higher levels): Mechanized Logging Methods (higher levels) General Disadvantages Capital costs Equipment utilization Machine interaction Hot logging Cold logging Tree size & terrain limitations General Advantages Efficiency in harvesting small trees Applications in commercial thinning High technology benefits Improved safetyMechanized Harvesting Systems: Mechanized Harvesting Systems Forest Resource management considerations with alternative mechanized harvesting systems ?: Forest Resource management considerations with alternative mechanized harvesting systems ? Forest Resource management considerations with alternative mechanized harvesting systems …. Selecting a harvesting system?: Forest Resource management considerations with alternative mechanized harvesting systems …. Selecting a harvesting system? Soil degradation (disturbance, rutting, compaction, impacts on water quality) Long term site productivity – the amount, composition, and location of woody debris Where are the tree limbs and tops located? Soil nutrient source? Fire risk? Damage to residual trees in a partial cut Skidding distances and amount of area in truck roads Landing size and spacing Stand characteristics and terrain Silvicultural strategy Equipment availability & logging expertise Single-grip Harvester: Single-grip Harvester 18” – 24” tree size 30’ max. boom reach Rubber tire or track carrierForwarder: Forwarder 5 – 20 ton payloads 4 – 8 wheel driveCut-To-Length System: Cut-To-Length System Applications: Thinning & fuels reduction Forest Resource Considerations: Tree limbs & tops left on forest trails - no landing slash - soil nutrient source - equipment travel on slash - fire risk -- may require follow-up slash treatment Small landings Low stand damage Long forwarding distance – fewer roads Cut-To-Length System: Cut-To-Length System Forest Resource Considerations: Soil displacement (rutting) can occur on forwarder trails Little soil scarification during logging – may require scarification for natural regeneration Other Considerations: Improved fiber recovery (e.g. lower value pulpwood) Computer aided bucking decisions Longer operating season Short log handling system – complete system change Longer term landowner commitment is important Operator training Double-Grip Harvester: Double-Grip HarvesterTree-Length System: Tree-Length System Forest Resource Considerations Tree limbs & tops left on forest trails BUT not dispersed as well compared to a cut-to-length system Landings are larger than a cut-to-length system Higher risk for residual stand damage than cut-to-length systemFell and Bunch : Fell and Bunch Equipment options & terminology: Drive-to-tree Swing boom (excavator base – not self-leveling) Swing boom (purpose built - self-leveling) Semi-walking or walking Slide17: Drive-to-tree machine Drive-to-tree machine Drive to Tree MachinesSlide18: Swing boom Feller Buncher Excavator base – not self leveling Purpose built – self leveling Purpose Built – Self Leveling Excavator BaseSlide19: Walking machineSlide20: Shear Cutting HeadSlide21: Non-Shear Cutting Heads Circular Saw - Continuous - Intermittent Chain-and-Bar SawSkid or Yard Whole Trees: Skid or Yard Whole TreesTree Processing at the Landing: Tree Processing at the Landing Equipment Options & Terminology: Gate delimber Stroke-boom delimber Stroke-deck delimber Grapple processor (dangle head) Pull-through delimber Chipper Chain flail delimber/debarker & chipperSlide24: Gate DelimberSlide25: Stroke Boom DelimberSlide27: Stroke Deck DelimberSlide28: Grapple Processor limbing & topping only; no fellingSlide29: Pull Through DelimberSlide30: Chain FlailSlide31: Chain Flail and ChipperWhole-tree System: Whole-tree System Applications: Clearcut & fuel reduction Forest Resource Considerations: Tree limbs & tops brought to the landing - large landing slash piles - soil nutrient problems on some sites - “clean logging” of site may eliminate burning & site preparation need - opportunities to utilize slash at the landing Large landings needed Equipment doesn’t travel on slash mat Hard to control damage to residual trees in thinning You do not have the permission to view this presentation. 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Mechanized Logging BAWare Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 775 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: January 02, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Mechanized Logging Methods: Mechanized Logging Methods Mechanical felling, tree processing & forwarding equipment and systemsThere are different levels of mechanized logging methods ….: There are different levels of mechanized logging methods …. E.g. “Low Level”: chainsaw felling & tree processing – line skidding “Medium Level”: chainsaw felling – line skidding & tree processing at landing “High Level”: harvester felling and tree processing – forwarding logs to landingMechanized Logging Methods (higher levels): Mechanized Logging Methods (higher levels) General Disadvantages Capital costs Equipment utilization Machine interaction Hot logging Cold logging Tree size & terrain limitations General Advantages Efficiency in harvesting small trees Applications in commercial thinning High technology benefits Improved safetyMechanized Harvesting Systems: Mechanized Harvesting Systems Forest Resource management considerations with alternative mechanized harvesting systems ?: Forest Resource management considerations with alternative mechanized harvesting systems ? Forest Resource management considerations with alternative mechanized harvesting systems …. Selecting a harvesting system?: Forest Resource management considerations with alternative mechanized harvesting systems …. Selecting a harvesting system? Soil degradation (disturbance, rutting, compaction, impacts on water quality) Long term site productivity – the amount, composition, and location of woody debris Where are the tree limbs and tops located? Soil nutrient source? Fire risk? Damage to residual trees in a partial cut Skidding distances and amount of area in truck roads Landing size and spacing Stand characteristics and terrain Silvicultural strategy Equipment availability & logging expertise Single-grip Harvester: Single-grip Harvester 18” – 24” tree size 30’ max. boom reach Rubber tire or track carrierForwarder: Forwarder 5 – 20 ton payloads 4 – 8 wheel driveCut-To-Length System: Cut-To-Length System Applications: Thinning & fuels reduction Forest Resource Considerations: Tree limbs & tops left on forest trails - no landing slash - soil nutrient source - equipment travel on slash - fire risk -- may require follow-up slash treatment Small landings Low stand damage Long forwarding distance – fewer roads Cut-To-Length System: Cut-To-Length System Forest Resource Considerations: Soil displacement (rutting) can occur on forwarder trails Little soil scarification during logging – may require scarification for natural regeneration Other Considerations: Improved fiber recovery (e.g. lower value pulpwood) Computer aided bucking decisions Longer operating season Short log handling system – complete system change Longer term landowner commitment is important Operator training Double-Grip Harvester: Double-Grip HarvesterTree-Length System: Tree-Length System Forest Resource Considerations Tree limbs & tops left on forest trails BUT not dispersed as well compared to a cut-to-length system Landings are larger than a cut-to-length system Higher risk for residual stand damage than cut-to-length systemFell and Bunch : Fell and Bunch Equipment options & terminology: Drive-to-tree Swing boom (excavator base – not self-leveling) Swing boom (purpose built - self-leveling) Semi-walking or walking Slide17: Drive-to-tree machine Drive-to-tree machine Drive to Tree MachinesSlide18: Swing boom Feller Buncher Excavator base – not self leveling Purpose built – self leveling Purpose Built – Self Leveling Excavator BaseSlide19: Walking machineSlide20: Shear Cutting HeadSlide21: Non-Shear Cutting Heads Circular Saw - Continuous - Intermittent Chain-and-Bar SawSkid or Yard Whole Trees: Skid or Yard Whole TreesTree Processing at the Landing: Tree Processing at the Landing Equipment Options & Terminology: Gate delimber Stroke-boom delimber Stroke-deck delimber Grapple processor (dangle head) Pull-through delimber Chipper Chain flail delimber/debarker & chipperSlide24: Gate DelimberSlide25: Stroke Boom DelimberSlide27: Stroke Deck DelimberSlide28: Grapple Processor limbing & topping only; no fellingSlide29: Pull Through DelimberSlide30: Chain FlailSlide31: Chain Flail and ChipperWhole-tree System: Whole-tree System Applications: Clearcut & fuel reduction Forest Resource Considerations: Tree limbs & tops brought to the landing - large landing slash piles - soil nutrient problems on some sites - “clean logging” of site may eliminate burning & site preparation need - opportunities to utilize slash at the landing Large landings needed Equipment doesn’t travel on slash mat Hard to control damage to residual trees in thinning