c. Lash a snatch block containing the bight of the winch line 12 inches from the top of the gin
pole. Lash a second block about the same distance above the ground. If a truck winch is not available,
attach the fall line block of a set of three-shave block and tackle to the top of the gin pole. Raise and
guy the gin pole. Secure each rope guy to an appropriate anchor (patent anchor, pole, tree, truck, and so
forth).
d. Run the winch line through the snatch blocks (lower block, then upper block) to the pole.
Attach the end of the winch line to the line pole at a point just above the balance point. If block and
tackle are used, use a rope sling to attach the second block hook to the pole.
e. Raise the line pole until the pole butt is centered above the pole hole. Slack off slowly on the
winch line (or fall line) and lower the pole into the hole. While lowering, guide the line pole butt into
the center of the hole.
f. Brace the pole with pike poles. Slack off on the winch line (or fall line). Remove the winch
line (or the block and tackle) from the pole. Set the pole by aligning, bracing, backfilling, and tamping
as in other methods of setting poles.
g. Remove the gin pole.
6.
A-frame method of raising and setting poles. An A-frame may be used when the poles are to be
set in open areas. An A-frame consists of two poles, timbers, or crossarms (for short poles) bolted or
lashed together at the tap to form a rough A-frame. When the A-frame is erect, the vertical distance
from the bolting or lashing point to the ground must be at least one-fifth of the length of the pole to be
raised. Use an A-frame as follows:
a. Dig an inclined trench from the ground level into the pole hole. (See Figure 1-10.) Be sure
that this trench has a length equal to the depth of the pole hole and a depth equal to one-half the depth of
the pole hole.
b. Place a butting board in the pole hole. The butting board should be above the ground level.
Position the pole to be erected with the butt end in the trench. Slide the pole toward the pole hole until
the pole butt is 4 inches to 6 inches away from the butting board.
c. Attach three rope guys, 1/2 inch or larger manila rope, to the top of the pole. While the pole
is being raised, use two of these guy lines as side guys and one as a back guy. Use timber hitches to
attach the guy lines. Make sure the distance from the pole to each anchorage is greater than the pole
length. Snub the guy ropes to the anchorages.
d. Position the truck at a safe distance (greater than the length of the pole) from the pole.
Chock the truck wheels to anchor the truck. Attach the winch line to the pole at a pin a little above the
balance point of the pole. A pulling line fastened to the rear pintle on the truck may also be used if there
is enough space to drive the truck forward to pull in the pole.
SS0439
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