Contractor. Testing shall be performed with a minimum 1.25 m 4 foot
straightedge to reveal irregularities exceeding the edge slump tolerance
specified above. The edge slump shall be determined at each free edge of
each slipformed paving lane constructed. The straightedge shall be placed
transverse to the direction of paving and the end of the straightedge
located at the edge of the paving lane. Measurements shall be made at 1.5
to 4.5 m 5 to 15 foot spacings, as directed, commencing at the header where
paving was started. Initially measurements shall be made at 1.5 m 5 foot
intervals in each lane. When no deficiencies are present, the Contracting
Officer may approve an increase in the interval. When any deficiencies
exist, the interval will be returned to 1.5 m 5 feet. In no case shall the
interval exceed 4.5 m 15 feet. In addition to the transverse edge slump
determination above, the Contractor, at the same time, shall check the
longitudinal surface smoothness of the joint on a continuous line 25 mm 1
inch back from the joint line using the 4 m 12 foot straightedge advanced
one-half its length for each reading. Other tests of the exposed joint
face shall be made to ensure that a uniform, true vertical joint face is
attained. The measurements shall be made by the Contractor, shall be
properly referenced in accordance with paving lane identification and
stationing, and a report given to the Contracting Officer within 24 hours
after measurement is made. The report shall also identify areas requiring
replacement in accordance with paragraph: "Excessive Edge Slump".
1.5.6.4
Excessive Edge Slump
When edge slump exceeding the limits specified above is encountered on
either side of the paving lane, additional straightedge measurements shall
be made, if required, to define the linear limits of the excessive slump.
The concrete slabs having excessive edge slump or joint deformation shall
be removed and replaced to the next transverse joint in conformance with
paragraph: REPAIR, REMOVAL, REPLACEMENT OF NEWLY CONSTRUCTED SLABS. Use of
slip-form paving equipment and procedures that fail to consistently provide
edges within the specified tolerances on edge slump and joint face
deformation shall be discontinued and the pavements shall be constructed by
means of standard paving procedures using fixed forms.
1.5.7
Plan Grade
1.5.7.1
Grade Conformance Tests
Within 5 days after paving of each lot, the finished surface of the
pavement area shall be tested by the Contractor, by running lines of levels
at intervals corresponding with every longitudinal and transverse joint to
determine the elevation at each joint intersection. The results of this
survey shall be recorded and a copy given to the Government at the
completion of the survey of each lot. The finished surfaces of airfield
runway, taxiway, and apron pavements shall vary not more than 12 mm 1/2 inch
above or below the plan grade line or elevation indicated. The surfaces
of other pavements shall vary not more than 18 mm 3/4 inch.
1.5.7.2
Payment Adjustment for Plan Grade
When more than 5.0 and less than 10.0 percent of all measurements made
within a lot are outside the specified tolerance, the computed percent
payment for that lot will be 95 percent. When more than 10.0 percent are
outside the specified tolerances, the computed percent payment for the lot
will be 75 percent. However, in any areas where the deviation from grade
exceeds the specified tolerances by 50 percent or more, the deficient area
shall be removed and replaced at no additional cost to the Government. The
SECTION 02753
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