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.