Quantcast Tree trimming clearances and climbing space

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TM 5-684/NAVFAC MO-200/AFJMAN 32-1082
Table 4-5. Number of guy wire clamps
of pull
Number of
Breaking strength of
guy stand
clamps
Type of clamp
angle b o l t with
plote
square wosher
Kilograms
Pounds
A
Two-bolt
1,800
1
4,000
clomp
'Guy
Three-bolt
2,700
1
6,000
\
Stroin insulator
Three-bolt
4,500
2
10,000
Three-bolt
7,200
3
16,000
pole
d. Safety precautions. Tree trimming should be
equal
Golvonized
done from a bucket to the utmost extent possible.
turnbuckle
eye and eye
Even maximum use of buckets will not permit all
screws
work to be done without climbing the tree. When
tree climbing is required, safety precautions must
be observed. Refer to ANSI 2133.1 for tree care
cut off
operations and safety requirements.
ot  nut
,
Eye bolt
square
4-54. Tree trimming clearances and climbing
space.
10 ft
quord
opproxtmote
Minimum clearances to be maintained between con-
Concrete
ductors and any part of a tree are shown in figure
Anchor rod
(200mm)
4-24. These distances may be increased as desired.
around pole
Note that distances A and B are measured from the
Stroin plote
Set pole
deeper
normal sagged position of the conductor, and that
thon stondord
distance C, D, and E must be increased by the sag
at that point. For tree trimming purposes, the 30-
inch (750-millimeter)  climbing space dimensions
shown in figure 4-l should be increased to 40
Figure 4-23. Self-supporting, hog-guyed pole
inches (1,000 millimeters), and distances in figure
4-24 should be increased as required to maintain a
cleared on a planned time cycle and should provide
40-inch (l,000-millimeter) minimum climbing
hazard-free operation for at least 2 years to be cost-
space.
effective.
750 lo
8700
13.2
750 v
lo 4 0
120
ond
Neutrol
Kv
SAG Of
.
.
C
m)
Figure 4-24. Recommended minimum clearances for tree trimming
4-30





 


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