approved by the Contracting Officer. The methods used for sampling and
testing shall be the same as those specified for Government quality
assurance testing. Reports shall be prepared of all testing and inspection
and shall be submitted within 24 hours of the time sampling or testing took
place. Minimum acceptable extent of testing and inspection shall be as
follows:
a.
Quality and gradation tests shall be made on samples of aggregate
as it is delivered to the site, at least one for every 2250 metric
tons 2500 tons of each size of aggregate.
b.
Gradation test shall be made on samples of aggregate from the cold
feed, at least one for every 225 metric tons 250 tons of each size
of aggregate.
c.
Depth of uncompacted bituminous courses shall be tested with a
probe, immediately behind the paver and at least once for every 15
meters 50 ft. of lane. No written report is necessary.
d.
Tests for asphalt content shall be made.
e.
The Contractor shall check and recalibrate scales, other measuring
devices and batching or proportioning equipment prior to starting
production and at least once every 4500 metric tons 5000 tons of
PFC produced.
f.
Surface smoothness shall be tested as necessary, to assure that
specification requirements are attained.
g.
Placing operations, including construction of joints, shall be
continuously checked for conformance with specification
requirements. Problems encountered shall be reported.
3.9
ACCEPTABILITY OF WORK
Acceptance of the PFC mixture and completed pavement will be based on
gradation, asphalt content, and smoothness. Testing for acceptability of
work to determine percent payment will be performed by the Government. The
Contracting Officer reserves the right to sample and test any area which
appears to deviate from the specification requirements. Testing in these
areas can be considered a separate lot for determining payment.
3.10
PERCENT PAYMENT
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NOTE: The lot size can be specified on the basis of
working hours (i.e., 4 hours, 1 day, etc.) or amount
of production (i.e., 500 metric tons (tons), 1000
metric tons (tons), etc.). If the lot size is based
on amount of production, it should be selected to be
approximately equal to the amount of the PFC mix
produced in one day's operation. Generally, the lot
size should not exceed 1000 metric tons (tons) of
PFC mix. When a lump-sum contract is used, the lot
size becomes the total job; thus the penalty is
assessed to the contract price. The following
paragraph will be edited accordingly.
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SECTION 02747
Page 20
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