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WORKING TECHNIQUES
26 – English
- Start by cutting from above (about 1/3 of the way
through).
- Finish by cutting from below so that the two cuts meet.
Limbing
When limbing thick branches you should use the same
approach as for cutting.
Cut difficult branches piece by piece.
Felling technique for tree tops
Safe distance
During tree maintenance work above ground level, the
working area must always be secured and marked out
with signs, tape or the like. The safe distance between the
top of the tree that is to be felled and the nearest
workplace must be at least 2 1/2 times the height of the
tree. Make sure that no-one else is in this risk zone before
or during felling.
Felling direction
The aim is to fell the tree in a position where you can limb
and cross-cut the log as easily as possible. You want it to
fall in a location where you can stand and move about
safely. The main thing to avoid is that the falling tree top
should get jammed in another tree. Taking down a
”jammed” tree top is very dangerous (see point 4 in this
section).
Once you have decided which way you want the top of the
tree to fall you must assess which way the top of the tree
would fall naturally.
Several factors affect this:
• Lean of the tree
• Bend
• Wind direction
• Arrangement of branches
• Weight of snow
You may find you are forced to let the tree-top fall in its
natural direction because it is impossible or dangerous to
try to make it fall in the direction you first intended.
Another very important factor, which does not affect the
felling direction but does affect your safety, is to make sure
the tree has no damaged or dead branches that might
break off and hit you during felling.
Topping a tree
Topping a tree is done using three cuts. First you make the
directional cuts, which consist of the top cut and the
bottom cut, then you finish with the felling cut. By placing
these cuts correctly you can control the felling direction
very accurately.
!
WARNING! It takes a lot of experience to
fell a tree. Inexperienced users of chain
saws should not fell trees. Do not
attempt any task that you feel unsure of!
!
WARNING! During critical felling
operations, hearing protectors should be
lifted immediately when sawing is
completed so that sounds and warning
signals can be heard.