Felling Cuts
In order to ensure that the user has complete control over the tree fall,
the cutting instructions are as follows:
The cut that controls the fall direction of the tree is to be executed first:
First of all cut the UPPER PART of the directional notch on the side
the tree must fall
. Remain on the right hand side of the tree and cut
using the chain pull method; then cut the LOWER PART that must
meet the end of the upper part
. The depth of the directional notch
must be
1/
4
of the trunk diameter, with an angle of at least 45° between
upper and lower cut
. The meeting point between the two sides of
the notch is called “directional cut line” This line must be perfectly
horizontal at right angles (90°) to the felling direction.
The felling cut that provokes the tree fall, is performed at 3 to 5cm
above the lower part of the directional felling cut line
, finishing at a
distance of 1/10 of the trunk from the notch. Remain on the left hand
side of the tree and cut using the chain pulling method and the spiked
bumper
. Check that the tree does not move in a direction other
than that predicted for the fall
.
The uncut part of the trunk is called the “hinge”, as it is intended to
guide the tree as it falls; in cases where the cuts are not sufficient, not
straight, or have been cut through completely, the tree fall cannot be
controlled (extremely dangerous!). For this reason the various cuts
must be performed with great precision.
When cutting operations are completed the tree will begin to fall.
Where necessary help tree fall using wedges or felling levers.
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Eliminate any branches that interfere with the job
, starting from top
to bottom, and then, always keeping the trunk between the user and
the machine eliminate the more difficult branches afterwards, piece by
piece .
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ATTENTION!
During tree felling operations in critical conditions,
always remove ear protection immediately after cutting
operations to be able to listen for unusual noises and any
warning signals.
Preliminary cutting operations and identifying the retreat path.
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GB
25
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45
0
min
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3 - 5 cm
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