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Incorrect Backcutting |
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The OSHA standard
requires that the backcut be made above the level of the horizontal
facecut.
This will create a step to keep the tree from sliding back across the stump.
[1910.266(h)(2)(vii)] |
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Kinds of
Incorrect Back Cuts: |
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Back cut
at the same level as a horizontal facecut |
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Highly increases
the possibility of the tree butt kicking-back off the stump and decreases elasticity of
the hinge. |
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Back cut
too deep |
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The hinge will
break almost immediately resulting in inaccurate felling, and
possible damage to the bar or saw. |
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Back cut
too high above the notch |
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Highly increases
the necessity of pushing or pulling the tree to make it fall; produces low quality butt
and also decreases the effectiveness of the notch. |
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Back cut
below the notch |
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Highly increases
the possibility of the tree sitting back on the stump; produces a low quality butt and
also may require pushing. |
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Sloping
back cut |
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Lessens the
effectiveness of the hinge or leaves an inaccurate hinge, producing a low quality butt
and wasted material. |
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Angle
back cut with inadequate notch |
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Increased
possibility of barber chairing, hinge breaks early, resulting in loss of felling control
and a low quality butt. |
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Additional
Incorrect Backcutting information:
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