Rev. 9-1-95
OVERSIZED PREDRILLED PILE
HOLES
701-B-078
DESCRIPTION. This work shall consist
of predrilling pile holes, greater in diameter than the maximum
cross sectional dimension of the pile, to the elevations and at
the locations shown on the plans.
MATERIALS. The backfill for the pile
holes shall be uncrushed coarse aggregate size No. 12.
CONSTRUCTION. The minimum diameter of
the holes shall be 100 mm (4 in.) greater than the maximum cross
sectional dimension of the pile. The holes shall be drilled to
the elevations shown on the plans. The piles shall then be driven
to full penetration if practicable, but to at least the specified
bearing value. The drilled holes shall be maintained open during
the driving of the piles. Immediately after driving the piles,
the voids around the piles shall be filled with uncrushed coarse
aggregate size No. 12.
METHOD OF MEASUREMENT. Predrilled
pile holes will be measured by the meter (linear foot).
BASIS OF PAYMENT. Predrilled pile
holes will be paid for at the contract unit price per meter
(linear foot) for oversized predrilled pile holes. The costs of
maintaining open holes during pile driving and filling voids with
uncrushed coarse aggregate size No. 12 shall be included in the
cost of this work.