Perform the following procedure to set-up the initial pair of sheet piles for driving:
Ensure the initial pair of sheet piles has been properly modified with a driving tube
as outlined above.
Ensure the correct size guide plate is installed on the direct drive assembly of the
impact hammer for the size of drive tube installed on the initial pair of sheet piles.
If not, install the proper guide plate as described in the "Guide Plate Installation"
If removed, connect the five-ton headache ball to the pile line (aux. hoist).
Ensure the Load Moment Indicator (LMI) system on the crane is configured for
Front Hoist, Outrigger Position 100%, and Two (2) Parts of Line.
If not removed, remove the pile gate by performing the following procedure:
Use the hammer line (main hoist) to lift the impact hammer up the lead tower
and away from the pile gate and use the crane boom to lift the lead tower
approximately two-feet (60 cm) from the ground.
Attach two lifting slings to the five-ton headache ball on the pile line (aux.
hoist). Raise the pile line (aux. hoist) and attach the lifting slings to the pile
gate lifting lugs with shackles.
Using the pile line (aux. hoist), raise the pile gate away from the gate stop.
Remove the quick-release pin securing the pile gate stop on the foot roller.
Retract the stop into the foot roller and reinsert the quick-release pin.
Using the pile line (aux. hoist), lower the pile gate and remove it from the
lead tower by lowering, disengaging the gibs from the rails, and sliding it
beyond the foot roller.
Cut lifting holes, at the same elevation, in the return pans of the initial pair of sheet
piles. The holes should be slightly larger than the ground-release shackle pins.
Also cut lifting holes, at the same elevation, in the return pans of each of the
remaining, adjacent sheet piles to be driven. All lifting holes should be cut in the
Connect, with shackles, each leg of the H-type pile lifting sling to a 72-inch lifting
sling and connect, with shackles, the other end of each 72-inch lifting sling to a
Connect the ground-release shackles to the lifting holes cut in the initial pair of
sheet piles. Attach a rope tag line to each ground release shackle cut to a length
at least equal to that of the pile being driven. Ensure the H-type pile lifting sling is
in front of the driving tube welded to the top of the sheet piles.
Due to excessive vibration caused by driving sheet piles, lock wire the ground-
release shackle pins (connected to the H-type pile lifting sling) to ensure they
Remove the headache ball from the pile line (aux. hoist) and stow in the crane tool
Connect the H-type pile lifting sling to the wedge and socket on the pile line (aux.
H-70 Change 1