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UTILISATION
MÉTHODE ADÉQUATE D'ABATTAGE
Abattage d'un arbre — Lors d'activités d'abattage et de débitage effectuées par
•
deux personnes ou plus en même temps, l'abattage devrait être effectué à une
distance d'au moins deux fois la taille de l'arbre à abattre. Les arbres ne devraient
pas être abattus de façon à mettre en danger les personnes, à toucher des lignes
de services publics ou à causer des dommages matériels. Si un arbre tombe sur
une ligne, avertissez l'entreprise immédiatement.
• Operator should keep on the uphill side of terrain as the tree is likely to roll or slide after it is
felled.
• Pick your escape route (or routes in case the intended route is blocked). Clear the immediate
area around the tree and make sure there are no obstructions in your planned path of retreat.
Clear the path of safe retreat approximately 135° from the planned line of fall.
• Consider the force and direction of the wind, the lean and balance of the tree, and the location
tree along a line different from its natural line of fall.
• Remove dirt, stones, loose bark, nails, staples, and wire from the tree where felling cuts are to
be made.
• Notched Undercut. Cut a notch about 1/3 the diameter of the trunk in the side of the tree.
Make the notch cuts so they intersect at a right angle to the line of fall. This notch should be
cleaned out to leave a straight line. To keep the weight of the wood off the saw, always make
the lower cut of the notch before the upper cut.
• Felling Backcut. As the felling cut gets close to the hinge the tree should begin to fall. If there
is any chance the tree may not fall in the desired direction or it may rock back and bind the
saw chain, stop cutting before the felling cut is complete and use wedges of wood, plastic or
aluminum to open the cut and drop the tree along its desired line of fall. Make the backcut
level and horizontal, and at a minimum of 2" (5 cm) above the horizontal cut of the notch.
LIGNE DE CHUTE
PRÉVUE
135° PAR RAPPORT
À LA LIGNE DE
CHUTE PRÉVUE
(Voir les figures 12 à 15.)
90°
VOIE DE
RETRAITE SÉCURITAIRE
LIGNE DE
CHUTE PRÉVUE
21
135°
45°
90°
45°
135°
VOIE DE
RETRAITE
SÉCURITAIRE
Fig. 12
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