the initial core boring and as many additional core borings as may be
required to delineate the limits of the unacceptable concrete and the
repair of the cutoff wall, shall be borne by the Contractor and shall not
result in any additional cost to the Government.
1.3.1.2
Measurement
Coring Concrete in Completed Panels will be measured for payment from the
top of the panel to the bottom of the core hole. If overall core recovery
for a boring is less than [_____] percent or the boring deviates from the
cutoff wall prior to reaching a depth of [_____] meters feet, the boring
shall be redrilled and backfilled at no additional cost to the Government.
1.3.2
Unit of Measure
Unit of measure: per linear meter foot of cored hole.
1.4
UNACCEPTABLE CONCRETE IN COMPLETED PANELS
"Unacceptable Concrete" is concrete that is honeycomb, segregated,
uncemented, or contains voids greater than the diameter of the core boring.
When such concrete is encountered in any panel, the unacceptable concrete
shall be replaced or repaired in accordance with paragraph CONCRETE
PLACEMENT.
1.5
GOVERNMENT TESTING AND SAMPLING
The Government will sample and test aggregates and concrete to determine
compliance with the specifications. The contractor shall provide
facilities and labor as may be necessary for procurement of representative
test samples. Samples of aggregates will be obtained at the point of
batching in accordance with ASTM D 75. Concrete will be sampled in
accordance with ASTM C 172.
1.5.1
Preconstruction Sampling and Testing
1.5.1.1
Aggregates
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NOTE: The Designer should consult the appropriate
DM, identify the sources for aggregates, and attach
them to the end of this section. A Format Template
for Aggregate Sources is located in the Template
Menu of UFGS. Contact the Division Laboratory for
information to fill in the blanks below.
**************************************************************************
The aggregate sources listed at the end of this section have been tested
and at the time testing was performed were capable of producing materials
of a quality required for this project provided suitable processing is
performed. The Contractor may furnish materials from a listed source or
from a source not listed. Samples from any source of coarse aggregate and
any source of fine aggregate selected by the Contractor, consisting of not
less than [_____] [70 kg 150 pounds] of each size coarse aggregate and
[_____] [35 kg 75 pounds] of fine aggregate taken under the supervision of
the Contracting Officer in accordance with COE CRD-C 100 shall be delivered
to [_____] within 15 days after notice to proceed. Sampling and shipment
of samples shall be at the Contractor's expense. [_____] days will be
required to complete evaluation of the aggregates. Testing will be
SECTION 03373
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