2010 Construction and Material Specifications - Ohio Department of ...

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451.18
When zones of deficient thickness greater than 1/2 inch (13 mm) to 1 inch
(25 mm) are allowed to remain in place, the Engineer will calculate two average
thicknesses. A Project Average Thickness (PAT) including all cores not more than
1/2 inch (13 mm) deficient. Cores that exceed the specified thickness by more
than ½ inch (13 mm) will be considered as the specified thickness plus 1/2 inch
(13 mm) when calculating the PAT. A second Deficient Zone Average (DZA) will
include all cores with thickness deficiency greater than 1/2 inch (13 mm) to 1 inch
(25 mm). The pavement represented by each of the two averages, PAT or DZA,
will be calculated and paid separately.
Determine and apply deductions to each separately placed width of
pavement.
For any pavement areas removed and replaced, re-core those areas replaced
following this section of the specifications. Include those core values into the
calculations for average pavement thickness.
Unless the Director requests, do not core any widening less than 5 feet (1.5
m) in width or any pavement area less than 2000 square yards (1650 square
meters).
Fill all core holes with concrete of the same proportions and materials used
in the pavement.
B. Price Adjustments. Based on the pavement average thickness payment will
be made as specified in Table 451.17-1.
TABLE 451.17-1 CONCRETE PAVEMENT DEFICIENCY
Deficiency in Thickness
Proportional Part
as Determined by Cores
of Contract Price
0.0 to .2 inch (0.0 to 5 mm) 100 percent
0.3 to 0.5 inch (6 to 13 mm)
0.6 to 1.0 inch (15 to 25 mm)*
PAT
Ratio
PST
DZA
Ratio
PST
Greater than 1.0 inch (25 mm) Remove and replace
* The District Construction Engineer will determine whether pavement areas from
0.6 inch (15 mm) up to 1 inch (25 mm) deficient in thickness will be allowed to
remain in place at the reduced price or must be removed and replaced.
PAT = Project Average Thickness
PST = Plan Specified Thickness
DZA = Deficient Zone Average
451.18 Method of Measurement. The Department will measure Reinforced
Concrete Pavement by the number of square yards (square meters) completed and
accepted in place. The width equals the pavement width shown on the typical
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