TM 5-3810-307-10
7)
Using the hammer line (main hoist), raise the impact hammer and remove
the blocking (or sheet pile adapter)
8)
Reinstall the pile gate as described in the "Pile Gate Installation" Paragraph
on Page H-50.
c.
If installed, remove and stow the five-ton headache ball and install a ground
release shackle on the pile line (aux. hoist). Attach a rope tag line to the ground
release shackle cut to a length at least equal to that of the pile being driven.
d.
Ensure the Load Moment Indicator (LMI) system on the crane is configured for
Front Hoist, Outrigger Position 100%, and Three (3) Parts of Line.
NOTE
The Load Moment Indicator (LMI) system is configured for Three
(3) Parts of Line to compensate for the additional weight of a pre-
cast concrete pile.
e.
Install a shackle on one end of the 96-inch lifting sling. Use the 96-inch lifting sling
as a choker by wrapping it around the wood pile five feet (1.5 m) from the top of the
pile and routing the free end through the shackle. Tighten choker around pile.
Attach the free end of the 96-inch lifting sling to the ground-release shackle
attached to the pile line (aux. hoist).
f.
Using the hammer line (main hoist), raise the impact hammer along the lead tower
to a height equal to approximately two-thirds the length of the pile to be driven.
g.
Open the swing arm on the pile gate.
h.
Using the pile line (aux. hoist), raise the pile to a point where it meets the front side
of the square (concrete) pile adapter. It may be necessary to raise or lower the
impact hammer using the hammer line (main hoist).
i.
Using the pile (aux. hoist) and hammer (main hoist) lines, raise the pile and the
impact hammer simultaneously allowing the pile to enter the square (concrete) pile
adapter. Allow the pile to come to a vertical position then close the swing arm on
the pile gate. Ensure the latch on the pile gate springs shut.
j.
Ensure there are no obstructions along the proposed swing path. Then, using the
crane boom, position the pile over the center of the driving location. Adjust the
length of the spotter for any final adjustments.
k.
Using the pile (aux. hoist) and hammer (main hoist) lines, lower the pile and impact
hammer simultaneously. The pile may penetrate the ground under the weight of
the pile and impact hammer. The weight of the impact hammer should be fully
resting on the pile.
l.
Using a carpenter's level, ensure the pile is plumb. Raise, lower, telescope the
boom, and/or adjust the length of the spotter to plumb the pile.
m.
Proceed to the "Startup and Shutdown" Procedure on Page H-62 to start the
impact hammer, start the impact hammer, and then stop the impact hammer after
five strokes.
Change 1 H-67
