Special Provision No. 313F51 March Section of OPSS 313 is amended by the addition of the following:

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1 SMA mm LIFT THICKNESS - Item No. SMA mm LIFT THICKNESS - Item No. SUPERPAVE mm LIFT THICKNESS - Item No. SUPERPAVE mm LIFT THICKNESS - Item No. SUPERPAVE 12.5FC mm LIFT THICKNESS - Item No. SUPERPAVE 12.5FC mm LIFT THICKNESS - Item No. Special Provision No. 313F51 March 2012 Measurement by Square Metre for Surface Course REFERENCES Section of OPSS 313 is amended by the addition of the following: Ministry of Transportation Publications: MTO Laboratory Testing Manual: LS-294 Method for Measuring Pavement Lift Thickness DEFINITIONS Section of OPSS 313 is amended by the addition of the following: Design Lift Thickness (T D ) means the thickness in millimetres of the surface course specified in the Contract Documents. Lift Thickness means the thickness in millimetres of the placed and compacted lift of surface course as determined through the measurement method specified in the Contract Documents CONSTRUCTION Paving Clause of OPSS 313 is amended by the addition of the following sentence: The hot mix tender items shall be placed and compacted to the design lift thickness requirements specified elsewhere in this Special Provision while meeting all other acceptance criteria specified in the Contract Documents including but not limited to surface tolerances and surface smoothness Sampling Subsection of OPSS 313 is amended by the addition of the following clause: March 2012 Pg. 1 of 6 SSP 313F51

2 Lift Thickness All areas of surface course, including paved shoulders, within the contract limits shall be sampled for lift thickness with the following exceptions: a) Detours and other temporary pavement b) Miscellaneous hot mix c) Bridge decks d) The following additional stations and/or roadways: * Upon completion of each sublot, the Contract Administrator shall inform the Contractor in writing of the random location for sampling. The Contractor shall obtain one pavement core sample from each sublot to be designated as the sublot QA core. The Contractor shall obtain all pavement core samples to be used for payment purposes not later than the next working day after the completion of the sublot. Each core shall have a nominal diameter of 50 mm or a nominal diameter of 150 mm when directed by the Contract Administrator and shall consist of the full layer being sampled and at least one underlying layer. Each core shall have its vertical side cored perpendicular to the upper surface of the core. Each sample shall be placed in a suitable container to protect the sample integrity during transport and until testing. The sublot number shall be clearly marked with a permanent marker on each core. In addition the sample documentation specified elsewhere in the Contract Documents shall be provided. No replacement surface course thickness cores shall be obtained for QA or referee testing. When a new 150 mm nominal diameter core is requested due to the core thickness being reported as indeterminate or damaged, the new 150 mm core shall be taken centred over the sublot s previously taken 50 mm core. The Contractor shall be permitted for the first sublot of each lot to obtain for QC purposes a maximum of three surface course thickness core samples. Samples obtained for QC purposes shall be a minimum of 100 m 2 from any core samples obtained for QA purposes and any other core sample obtained for QC purposes within the sublot. Holes resulting from the removal of core samples shall be cleaned, dried and filled with a material acceptable to the Contract Administrator immediately after sampling QUALITY ASSURANCE Acceptance Criteria Subsection of OPSS 313 is amended by the addition of the following: f) Lift Thickness Subsection of OPSS 313 is amended by the addition of the following clauses: Lift Thickness Lot Size The Contract Administrator shall determine the size and location of the lots and sublots after discussion with the March 2012 Pg. 2 of 6 SSP 313F51

3 Contractor and before hot mix production for the item starts. Generally the Contract shall consist of one lot of the total pavement quantity in a given surface course tender item that is measured for lift thickness. When more than one T D is specified for the surface course tender item, the Contract shall generally consist of a separate lot for each T D specified for the surface course tender item. Each lot shall be divided into sublots approximately 2000 m 2 in size. A minimum of 3 sublots is required for each lot Acceptance of Pavement Width The Contract Administrator shall conduct random spot checks of the width of each binder and surface course lift for acceptance. The Contractor shall provide and maintain offset stakes on both sides of the roadway, or other identifiers acceptable to the Contract Administrator, for use in checking the pavement width at 25 m maximum intervals until the Contract Administrator advises the Contractor that the stakes or identifiers are no longer required. The width of each lift shall be accepted provided the: a) outside edges of the lanes and the paved shoulders are free from horizontal waves, b) width across all the adjacent lanes from the outside edge to outside edge is not less than the sum of the specified lane widths, and c) width of the paved shoulders is not less than the specified shoulder width. If the width is not acceptable at any location, the Contract Administrator shall notify the Contractor in writing that the pavement is rejectable and the Contractor shall submit a written proposal for corrective action to the Contract Administrator within 2 Business Days of receiving the notification Acceptance of Lift Thickness General The Contract Administrator shall determine the acceptability of the lift thickness of the surface course based on lift thickness measurements. The Contract Administrator shall calculate the thickness payment adjustment for the lot once all measurements for the lot have been completed Lift Thickness Measurement The lift thickness measurements shall be determined based on lift thickness of the QA designated core samples for each sublot as determined by the Owner s designated laboratory according to LS-294. The Contract Administrator shall provide the Contractor with a copy of each lift thickness measurement upon completion of the sublot measurement. The lift thickness measurements shall be reported in millimetres to the closest 0.5 mm. The rounding-off procedure, for all values, shall be according to LS Assessment Criteria for Lift Thickness Individual sublot thickness measurements shall be acceptable if they are equal to or greater than the minimum sublot lift thickness specified in Table A. If an individual sublot thickness measurement is less than the minimum sublot lift thickness specified in Table A, the sublot shall be deemed rejectable and shall be repaired. The repaired sublot shall be re-evaluated using the lift thickness measurement for the repaired sublot and used in determining March 2012 Pg. 3 of 6 SSP 313F51

4 payment of the lot. In addition, when a core taken for compaction testing does not meet the minimum lift thickness specified in Table A, the thickness sublot in which the compaction core was located shall be rejectable and shall be repaired. The Contract Administrator shall calculate the lot mean to one decimal point and the lot thickness payment adjustment based on all the sublot lift thickness measurements in the lot, according to LS-101. If the lot mean is equal to or greater than design lift thickness, the lot shall be accepted with no thickness payment adjustment. If the lot mean is less than the design lift thickness, the payment for the mix shall be reduced by a thickness payment adjustment that shall be calculated as specified under the Payment Adjustment for Lift Thickness clause Referee Testing The Contractor may only challenge the individual lift thickness measurement by requesting referee testing within five Business Days of the Contractor receiving the sublot thickness measurement and shall submit his request in writing to the Contract Administrator. The Contractor shall then have the opportunity to view the re-measurement of the QA designated pavement core for that sublot at an alternative Owner designated QA laboratory together with the Owner s representative. The re-measured lift thickness measurement shall be considered binding and shall replace the original lift thickness measurement for assessment of the sublot Repair and Re-evaluation The Contractor shall not be permitted to make any repairs solely to correct for excess lift thickness. The minimum length of a repair is the entire length of the sublot being repaired. The minimum width of repair shall be the width of the lane or shoulder or both being repaired. A paver shall be used in carrying out the repair. The repair shall be as specified in the Contract Documents. When a sublot is repaired, the sublot shall be re-evaluated for and accepted, for all other hot mix requirements, at the full Contract price, subjected to payment adjustment or rejected as specified in the Contract Documents. For lift thickness, acceptance of the repaired sublot shall be based on the individual sublot lift thickness measurement and the lot thickness payment adjustment shall reflect the re-evaluated sublot measurement MEASUREMENT FOR PAYMENT Plan Quantity Measurement Subsection of OPSS 313 is amended by the addition of the following: The Plan Quantity shall not be adjusted due to any of the exceptions specified in the Lift Thickness clause under the Sampling subsection. March 2012 Pg. 4 of 6 SSP 313F51

5 BASIS OF PAYMENT Clause of OPSS 313 is amended by the addition of the following item names: SMA mm Lift Thickness - Item SMA mm Lift Thickness - Item SUPERPAVE mm Lift Thickness - Item SUPERPAVE mm Lift Thickness - Item SUPERPAVE 12.5FC mm Lift Thickness - Item SUPERPAVE 12.5FC mm Lift Thickness - Item Payment Adjustment for Mix Properties and Compaction The definition for Lot Quantity in clause of OPSS 313 is deleted and replaced by the following: Lot Quantity shall be the quantity of the mix in the lot Payment Adjustment for Segregated HMA Clause of OPSS 313 is amended by deleting the second paragraph and replacing it with the following: When the unit of measure is square metres and the Contractor is to receive a payment increase, the payment increase shall be based on square metres not tonnes and shall be: $0.06 per m 2 for Superpave 12.5 FC2 $0.06 per m 2 in Northeast Region for Superpave 12.5 FC1 used on freeways $0.024 per m 2 for Superpave 12.5 FC1 excluding Superpave 12.5 FC1 placed on freeways in Northeast Region $0.024 per m 2 for all mixes excluding Superpave 12.5FC 2 and Superpave 12.5FC 1 The Contract Administrator shall calculate the square metres of mainlane surface course that shall receive a payment increase using theoretical square metres calculated using the design widths for each lane-kilometre of mainlane paving, including any paved shoulder up to 0.5 m in width that is placed at the same time and using the same paver as the finished lane for the surface course Payment Adjustment for Aggregate Density Clause of OPSS 313 is deleted. Subsection of OPSS 313 is amended by the addition of the following clause: Payment Adjustment for Lift Thickness The thickness payment adjustment shall apply to the horizontal area of the surface course in the lot. The thickness payment adjustment shall be a reduction in payment. The following formula shall be used to calculate the thickness payment adjustment: March 2012 Pg. 5 of 6 SSP 313F51

6 Thickness Payment Adjustment = lot quantity x price x ((1.000 (T L /T D )) x 2.0) where lot quantity = the horizontal area of the surface course in the lot price = the contract price of the hot mix surface course tender item T D = Design Lift Thickness of surface course specified in millimetres elsewhere in Contract Documents T L = lot mean, if lot mean is less than or equal to T D or T L = T D, if lot mean is greater than T D Section of OPSS is amended by the addition of the following subsection: Referee Testing for Thickness If the referee test result is 5.0 mm or more greater than the original QA test result, the Owner will bear the cost of the thickness measurement referee testing. If the referee test result is not 5.0 mm or more greater than the original QA test result for the sublot retested, the Contractor will be charged the cost of the referee testing as specified elsewhere in the Contract Documents. Table A Minimum Lift Thickness Specified Design Thickness, T D (mm) Minimum Sublot Lift Thickness (mm) 25 to 39 T D to 59 T D and greater T D 15.0 March 2012 Pg. 6 of 6 SSP 313F51