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Timber Harvesting - Coggle Diagram

- - - - undercut
        
        aka directional cut
        
        define direction of fall
        
        types
        
        conventional
        
        upright 45 deg notch
        
        humboldt
        
        inverted 45 deg notch
        
        open face
        
        combination
      - back cut
        
        aka felling cut
        
        cut at opposite side of undercut
        
        as final cut
        
        always above undercut
        
        preserve a part of timber
        na di dapat maputol
        
        hinge
        
        guide the fall
        
        aka break off allowance
        
        dont cut fully the kahoy
        
        1/3 size of the dia
        
        batberchair
        
        if hindi maganda ang fall
        
        aka splinters
      - wedging
        
        inserting wedges @ back cut
        
        realize fall of tree
        
        assist the fall of the tree
    - - power saw
      - cross cut saw
        
        aka two man saw
      - single & double bitted axe
      - bolo
        
        small dia trees
      - acessory
        
        wedge
        
        felling lever
        
        springboard
        
        large buttress
    - - 135 deg from the direction of the fall
      - 45 deg oppossite of the direction of the fall
      - accidents in felling
        
        power saw kickback
        
        felling kickback
        
        safety measures
        
        use proper equip
        
        safe disttance
        
        celar obstructions
        
        newver walk under a hangin tree
  - - - detoppping
        
        crown
      - delimbing/debranching
        
        branch
      - bucking/cross cutting
        
        into desired length
        
        types
        
        top bind
        
        start @ compression
        
        side bind
        
        bottom bind
        
        end bind
        
        wedge type dapat
      - debarking
        
        peel bark
        
        usually in procesing plant
  - - - sumpsite to temporary piling area
      - stumpsite to a log landing area
      - types
        
        skidding
        
        use mobile source of power
        
        ball hooting
        
        tao nagskid or buhat
        
        types
        
        manual skidding
        
        short distances 100 meters
        
        steep slopes
        
        small sized logs
        
        animal skidding
        
        short to moderate distances
        
        moderate slopes
        
        adverse grade means slope gradient
        
        small to medium sized logs
        
        bummer
        
        two wheeled carts
        
        1 more item...
        
        mechanical or tractor skidding
        
        more than 1km distances
        
        rollign terrain
        
        big sized logs
        
        trailing
        
        logs are alligned continuously
        
        chain of logs
        
        habal-habal or skylab
        
        mindanao
        
        accessories
        
        log hook
        
        sled/sledge
        
        log tong
        
        skidding winch & cable
        
        log grapple
        
        log cone
        
        log chain
        
        log pan
        
        lor arch
        
        bummer
        
        wheeled cart
        
        log hook
        
        yarding
        
        stationary source of power
        
        cable system
        
        types
        
        groundlead yarding
        
        drag along the ground
        
        block
        
        highlead yarding
        
        partially lifted or totally lifted
        
        high spar tree'
        
        parts
        
        mainline
        
        1 more item...
        
        haulback line
        
        1 more item...
        
        tailblock
        
        cornerblock
        
        chocker
        
        1 more item...
        
        mainline
        
        hilain
        
        haulback line
        
        ibalik sa stumpsite
        
        accessories
        
        log guide
        
        beside redidual trees
        
        shield the residuals
        
        rub tree
        
        deviate the mainline
        
        tinatamaan ng logs
        
        no residuals can be damaged
        
        flying dutchman
        
        logging block
        
        big groove
        
        accomodate mainline
        
        bull block
        
        logging block w/ extra throat
        
        allow passage of butt rigging assembly
        
        extended chocker
        
        enlarging area of yarding coverage along the mainline'
        
        mahabang chocker
        
        skylining or swinging
        
        from one log landing to another log landing
        
        cable system
        
        has skyline
        
        has a swing
        
        types
        
        slack system
        
        one spar tree
        
        tight system
        
        mahigpit
        
        2 spar
        
        head spar
        
        1 more item...
        
        tail spar
        
        2 more items...
        
        lines
        
        guyline
        
        1 more item...
        
        haulback line
        
        2 mainline
        
        chocker
        
        line attached carriage to the log
        
        modifications
        
        ballon logging
        
        helicopter logging
        
        rafting
        
        skyline
        
        line
        
        transport log
        
        one landing to another
        
        activities
        
        build tractor road
        
        skidding
        
        organization of skidding operation
        
        one skiddign crew
        
        1 tractor operator
        
        2 3 chocker setter
        
        1 2
        
        terms
        
        travel out
        
        tractor goes out to cutting area emplty
        
        chocker settting
        
        attachign chocker to the log
        
        travel in
        
        tractor goind toward log landing w/ load
        
        chasing
        
        removal of chocker from log
  - - - water transport
        
        rafting & towing
        
        barging
        
        most economical major transport sys
      - land transport
        
        truck transport
        
        train transport
        
        most common mahjot transport sys
        
        activities
        
        hauling/
        
        loading
        
        uhnloading
      - air transport
        
        helicopter transport
        
        most expensive
        
        midification
        
        multispan cable system
        
        use of carable carts or tramline
    - - mobile/protable log laoding
        
        crane loading
        
        high lift loading
        
        forwarder loading
      - stationary of fixe dloag loading
        
        ginpole loading
        
        heelboom loading
        
        crotchline loading
        
        2 hook
        
        end to end
        
        guyline laoding
        
        boom loading
        
        additional log attached on log
        
        boom
    - - channel thru w/c all forest products pass thru
      - types
        
        main road
        
        secondary road
        
        all season road
        
        all resources
        
        tertiary road
        
        feeder road
        
        skidder road
        
        spur road
        
        access to specific resources
        
        location
        
        along valley bottom
        
        along ridgetops
        
        along hillsides
- - - - processing mill or markeet
- - - - sustained yield
    - - location of road
- - - - plantation
  - - - feel at atumpsite
    - - all at stump site