NYC 9/11 Public Portal Document
III. EXECUTION
A. GENERAL
1. The Subcontractor shall be solely responsible
for manufacture, handling, transporting, and driving
of the pile under the terms of this Section, and
for all permits, arrangement, costs and charges
incident thereto.
B. EQUIPMENT
1, All piles shall be driven using a single acting
steam or air hammer developing not less than 32,000
ft. pounds of energy. The source of steam or air
shall be sufficient to operate the hammer at its
rated speed,
2. Piles shall be driven using fixed leads and
hajraner carriages constructed in such a manner as to
allow freedom of movement to the hammer, and such
that the pile is held firmly in correct position and
alignment, as well as in axial, alignment with the
hajramer.
3. A suitable anvil shall be used to prevent damage
tn the pile tops. Suitable cushioning shall be used
in the cap block to prevent damage to the pile top.
C. PILE DRIVING CRITERIA
1. Piles shall be driven to sound bedrock and then to
specified penetration resistance. Pile driving shall
be continuous until the pile has developed its required
bearing capacity.
2. Piles shall be driven to sound bedrock and then to
resistance of five (5) blows per one cjuarter inch or
smaller penetration for the last 40 blows .
3. Piles whose tops have been crimped or damaged
during driving shall be trimmed square below the
damaged portion and redriven to the specified minimum
penetration resistance<.
EPC-C0I4MERCIAL CENTER 02363-4
CONCRETE FILLED STEEL
, PIPE PILES
NYC-WTC_000165130
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