Quantcast Types of tree trimming

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TM 5-684/NAVFAC MO-200/AFJMAN 32-1082
4-55. Tree trimming tools.
of clearance and shaping. Tree-trimming jobs usu-
ally come under one of the following classifications,
Only approved tools should be used for tree trim-
as shown in figure 4-25.
ming. A 30-inch (750-millimeter) one-man crosscut
a. Center trimming. Center trimming, when nec-
saw, docking saw, forester saw, or pruning saw is
used for cutting off any limbs within arm's reach.
essary, requires that the limbs he cut away to leave
The type of saw to use depends on the size and
a clear space around the wires. The cuts should be
location of the limbs to be removed. A pole saw or
made at tree crotches to encourage the direction of
tree pruner is used for cutting off limbs beyond an
limb growth away from the wires, thus avoiding the
arm's reach. If the saws become dull or lose their
need for frequent trimming in the future.
set, they should be repaired. Sharp tools make the
b. Side trimming. Side trimming is necessary
job easier and safer. The first and second sections of
when the ends of the limbs on the side of a tree
the tree pruner are assembled on the ground and
extend into or over the wires. In these cases, the
then raised carefully to a working position. If more
limbs are cut off at a crotch so the limb can continue
than two sections of the pruner are to be used, the
to grow, but in a direction parallel to or away from
first two sections are assembled on the ground, and
the line wires. The amount of trimming needed de-
then raised and leaned against a limb, pole step, or
pends on the size and location of the limbs. Side
other object while the third section is added. More
trimming usually results in notches or an unbal-
than two sections must never be assembled on the
anced tree that looks unsightly. When this is the
ground and then raised, because the pruner is likely
case, branches or limbs not interfering with wires
to break under the strain.
should be trimmed from the other side so that the
4-56. Types of tree trimming.
tree is balanced.
Different species of trees and their location with
c. Top trimming. Top trimming is necessary when
respect to overhead lines present varying problems
a tree is growing into the wires. The ends of the
BEFORE
AFTER
BEFORE
AFTER
a
Center
Side
b
AFTER
c. Top
Figure 4-25. Tree trimming to clear electric wires
4-31





 


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