SECTION 702: HOT MIX ASPHALT SIDEWALKS AND DRIVEWAYS DESCRIPTION 702.20: General This work shall consist of the construction of sidewalks and driveways. Sidewalks and driveways shall be constructed of HMA. Construction shall be in accordance with the specifications and within the tolerances established on the plans. MATERIALS 702.30: General Materials shall meet the requirements specified in the following Subsections of Division III, Materials: Gravel Borrow , Type b ............................................................................................................... M1.03.0 Asphalt Release Agents ............................................................................................................. M3.01.6 HMA for Driveways, Sidewalks, Berm, and Curb ............................................................ M3.07.0 Hot Mix Asphalt Production Facility .................................................................................... M3.12.0 Hot Mix Asphalt Materials Testing Laboratory and Equipment .............................. M3.13.0 CONSTRUCTION METHODS 702.40: General Prior to the start of any work activity addressed in 702.40: General through 702.42: Construction of Hot Mix Asphalt Sidewalks and Driveways below, a Construction Quality Meeting shall be held to review the Contractor’s Quality Control system. The Contractor shall present and discuss with the Engineer in sufficient detail the specific QC information and activities required under this specification. The meeting is intended to ensure that the Contractor has an adequate QC system in Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.326 202 4 Edition place and that the Contractor’s personnel are fully knowledgeable of the roles and activities for which they are responsible to achieve the specified level of quality. Contractor personnel required to attend the Construction Quality Meeting include the Con struction QC Manager and all Superintendents. 702.41: Preparation of Underlying Surface Walks and driveways shall be placed only upon properly prepared surfaces that are clean from foreign materials. The underlying surface shall be prepared in accordance with the requirements below, prior to the placement of sidewalk and driveway mixtures.
A.Excavation. Excavation of the area shall be in accordance with the applicable portions of Subsection 120: Excavation . Existing pavements shall be sawcut in accordance the 450.49: Hot Mix Asphalt Joints as shown on the plans.
B.Subgrade and Subbase. The subgrade for the sidewalks and driveways shall be shaped parallel to the proposed surface of the sidewalks and driveways and thoroughly compacted. All depressions in the subgrade shall be filled with suitable material and again compacted until the surface is smooth and hard. Prior to the placement of the subbase, the Contractor shall inspect the prepared subgrade to ensure that it is in conformance with the required grade and cross -section. Subgrade shall be fine graded to meet the applicable requiremen ts of Subsection 170: Grading. After the subgrade has been prepared, a gravel subbase shall be placed upon it. After being compacted thoroughly, the subbase shall be at least 8 in. thick and parallel to the proposed surface of the sidewalk. Prior to the placement of the HMA mixtures, th e Contractor shall inspect the prepared subbase material to ensure that it is in conformance with the required grade and cross - section. Subbase material that is not in accordance with the plans or specifications shall be reworked or replaced to meet the applicable requirements of Subsection 170: Grading before the start of HMA placement. When placing HMA, the compacted subbase shall not be frozen or have standing water. 702.42: Construction of Hot Mix Asphalt Sidewalks and Driveways
A.Forms. Where walls, curbing, or other suitable permanent supports are not present or where an approved mechanical spreader is not used, satisfactory forms shall be installed to assist in securing proper alignment and adequate compaction of the base and surface co urses.
B.Zero Tolerance for Use of Petroleum Products as Release Agents. The production, loading, transport, and placement of HMA sidewalks and driveways shall follow the zero- tolerance policy for the use of petroleum products as a release or cleaning agent specified under 450.44: Zero Tolerance for Use of Petroleum Products as Release Agents .
C.Hot Mix Asphalt Production. HMA production shall conform to the requirements of 702.30: General. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.327 202 4 Edition D. Hot Mix Asphalt Transportation and Delivery. HMA transportation and delivery shall conform to the requirements of 450.46: Hot Mix Asphalt Transportation and Delivery .
E.Hot Mix Asphalt Placement. HMA sidewalks and driveways shall be constructed to the following thicknesses. The HMA sidewalks shall be paved in two lifts to achieve a final pavement thickness of 3 in. after compaction. The HMA driveways shall be paved in two lifts to achieve a final pavement thickness of 4 in. after compaction. The pavement structure shall meet the following requirements:
a.The mixtures type shall be in accordance with 702.30: General.
b.For sidewalks, the compacted lift thickness for intermediate course shall be 1.75 in. and the surface course shall be 1.25 in .
c.For driveways, the compacted lift thickness for intermediate course shall be 2.5 in . and the surface course shall be 1.5 in.
d.The intermediate course shall be a driveway and sidewalk recipe mix or 12.5 mm Superpave Surface Course. In areas of high traffic, the driveway intermediate course shall be 12.5 mm Superpave Surface Course.
e.The surface course shall be a driveway and sidewalk recipe mix or 9.5 mm Superpave Surface Course. In areas of high traffic, the driveway surface course shall be 12.5 mm Superpave Surface Course.
f.The mixture type and placement method shall be determined by the Contractor and approved by the Engineer prior to commencing the work. A pedestrian path of travel must be maintained across the driveway opening. The dimensions, cross slope, grades, and tolerances of the pedestrian path shall be in conformance with the standard construction drawings. The surface of the sidewalk or driveway shall have a cross -slope to the roadside edge to provide for surface drainage. The cross -slope shall be 1.5% ± 0.5%. HMA shall be placed in a manner which limits segregation and allows for adequate compaction. The mixture shall be spread with a mechanical paver. In areas not accessible to a paver, the mixture shall be deposited in wheelbarrows or on approved steel dump sheets outside the areas on which it is to be placed. It shall then be immediately distributed into place with shovels and raked into a uniformly loose layer to the full width required and of such depth that, when compacted, it shall conform to the grade and slope required.
F.Hot Mix Asphalt Compaction. Equipment used for compaction of HMA sidewalks and driveways may include smooth drum steel wheeled rollers, vibratory rollers, or oscillation rollers as determined appropriate by the Contractor for the particular mixture type being placed. The type and size of rollers used shall meet the requirements below.
1.Compaction of Sidewalks . The HMA mixture shall be compacted with a self- propelled roller with a weight not less than 1.5 tons and not more than 5 tons. In places inaccessible to a power roller, compaction shall be Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.328 202 4 Edition obtained by means of mechanical plate compactor or by hand tampers with a mass not less than 50 lb and having a tamping face not exceeding 100 in. ².
2.Compaction of Driveways The surface shall be compacted with a self -propelled roller with a mass not less than 3 tons and not more than 5 tons. CONTRACTOR QUALITY CONTROL 702.60: General The Contractor shall provide a Quality Control System (QC System) adequate to ensure that all materials and workmanship conform with the specification requirements. The Contractor shall provide qualified QC personnel and QC laboratory facilities and perfor m Quality Control inspection, sampling, testing, corrective action (when necessary), and documentation as outlined further below. 702.61: Contractor Quality Control Plan The Contractor shall provide and maintain a Quality Control Plan (QC Plan). The QC Plan shall sufficiently document the QC processes of all Contractor parties (i.e. , Contractor, Subcontractors, Producers) performing work required under this specification. QC activities related to the sidewalk and driveway operations shall be addressed in the Contractor’s QC Plan for HMA Pavement in accordance with 450.61: Contractor Quality Control Plan . 702.62: Quality Control Personnel Requirements The Contractor’s Quality Control organization shall, at a minimum, consist of the personnel outlined under 450.62: Quality Control Personnel Requirements . 702.63: Quality Control Laboratory Facility Requirements All Contractor QC testing shall be performed in laboratories qualified through the NETTCP LQP or accredited through the AAP. The QC laboratory shall conform to 702.30: General. 702.64: Quality Control Inspection The Contractor shall perform Quality Control inspection of all work items addressed under this specification. Inspection activities during production and placement may be performed by qualified Production personnel (e.g. Skilled Laborers, Foremen, and Supe rintendents) or the Contractor’s QC personnel. The Contractor shall not rely on the results of Department’s Acceptance inspection for QC purposes. The Engineer shall be provided the opportunity to monitor and witness all QC inspection. QC inspection activities must address the following four primary components: • Equipment • Materials • Environmental Conditions • Workmanship Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.329 202 4 Edition The minimum frequency of QC inspection activity shall be in accordance with the requirements below and as outlined in the approved QC Plan. The quality of each sidewalk and driveway will be inspected and evaluated on the basis of Lots and Sublots. A Lot is defined as an isolated quantity of work which is assumed to be produced by the same controlled process. A Lot shall constitute no greater than the entire sidewalk or driveway surface area on the project completed within the same construction season using the same paving process. The surface of each sidewalk and driveway shall be divided into longitudinal Sublots of 500 ft. The Contractor shall perform a minimum of one random QC measurement within each Sublot. Additional selective QC measurements within each Sublot will be performed as deemed necessary by the QC personnel. All QC inspection results shall be recorded. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.330 202 4 Edition Table 702.64- 1: Minimum QC Inspection at HMA Sidewalks and Driveways Inspection Component Inspection Attribute Minimum Inspection Frequency Point of Inspection Inspection Method Equipment As specified in QC Plan Per QC Plan Per QC Plan Per QC Plan Materials HMA Mixture (Correct Type) Per QC Plan From Haul Vehicle On Site Visual Check & Delivery Ticket Temperature of HMA Mixture 4 per Day (See Note 1) From Haul Vehicle at On Site Check Measurement Environmental Conditions Underlying Surface (Soundness) Per QC Plan Underlying Surface Visual Check Underlying Surface (Free of Standing Moisture) Per QC Plan Underlying Surface Visual Check Temperature of Air & Underlying Surface 1 per Day (See Note 2) On Site Check Measurement Workmanship HMA Lift Thickness Per QC Plan HMA Lift Check Measurement Physical Segregation Per QC Plan HMA Surface Visual Check Cross- Slope & Profile Per QC Plan Compacted HMA Check Measurement Surface Deviations (See Note 3) Once per 50 ft At Finished Surface 10-ft standard straightedge Joint Deviations (See Note 4) Once per 50 ft At Joints 10-ft standard straightedge Note 1: The initial temperature measurement will be taken from the first haul vehicle. Note 2: At a minimum, the temperature measurements of the air and underlying surface shall be obtained prior to starting the HMA placement. Note 3: When measured with a 10 -ft straightedge the deviation shall be less than ¼ in. Note 4: When measured with a 10 -ft straightedge the deviation shall be less than ⅛ in. Surface Deviation When inspected with a 10 -ft straightedge placed parallel to the center line of the pavement, the variation from the edge of the 10 -ft straightedge to the top of the sidewalk or driveway surface between any two contact points shall not exceed ¼ in. The Contractor shall correct any location not meeting this requirement. The corrective method(s) proposed by the Contractor shall be subject to the approval of the Engineer and shall be performed at the Contractor's expense. 702.65: Quality Control Sampling and Testing The Contractor’s QC personnel will perform QC sampling and testing at both the production facility and at the site of field placement to ensure that the production and placement processes are providing work conforming to the contract requirements. The Engi neer will not sample or test for Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.331 202 4 Edition Quality Control or assist in controlling the Contractor’s operations. The Contractor shall furnish approved containers for all material samples. The Engineer shall be provided the opportunity to monitor and witness all QC sampling and testing.
A.Random Sampling. The Contractor’s QC System shall utilize stratified random sampling of each Lot produced and placed to assure that all material within the Lot has an equal probability of being selected for testing. The Contractor’s qualified QC personnel shall obtain rand om QC samples at the minimum frequencies specified in Table 702.65 -1. In all cases, application of the specified QC sampling frequencies shall result in a minimum of one random sample per Sublot. Random sample locations shall be determined using the random number tables and procedures contained in ASTM D3665 or an electronic random number generator, as presented by the NETTCP. The determination of all random sample locations shall be documented on NETTCP Standard Test Report Form D3665RNG. The Contractor will provide the Engineer with the random QC sampling locations selected and documented for each Sublot prior to production and placement of the relevant Sublots.
B.Selective Sampling. The Contractor’s QC System may also utilize selective sampling (i.e. , non- random samples), as needed, to provide supplemental information to assist in maintaining all production and placement processes in control. The Contractor’s qualified QC personnel shall obtain selective QC samples from any Sublot as determined necessa ry and in accordance with the guidelines established in the approved QC Plan. Selective QC samples shall not be used as a basis to dispute the Engineer’s Acceptance test results.
C.QC Sample Identification System. The Contractor shall establish a reliable system for the identification of all QC samples obtained. All HMA loose mixture samples and core samples shall be correctly labeled with the following minimum information:
a.Contract No.
b.Date of Sample.
c.Bid Item Number
d.Mixture Type
e.Mixture ID Number
f.Lot & Sublot No.
g.Sample No.
h.Sample Type (i.e. , Random or Selective).
i.Sample Location (e.g., Station & Offset). The Contractor’s system and procedures for identification of QC samples shall be outlined in the approved QC Plan.
D.Retention of Split Samples. The Contractor’s qualified QC personnel shall obtain all material samples (HMA loose mix samples) for QC testing. The Contractor will retain split samples from each HMA loose mix sample. If Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.332 202 4 Edition requested, these split samples will be provided to the Engineer. All split samples shall be properly labeled and stored for a period of 30 days, or until tested. The retained split samples may be discarded prior to the required 30 days when agreed upon by the Contractor and the Engineer.
E.Quality Control Testing of Prepared Underlying Surface. The Contractor’s QC personnel will perform QC testing during preparation of the underlying surface. All QC testing shall be in accordance with the current AASHTO, ASTM, NETTCP, or Department procedures specified in Subsection 170: Grading . The Engineer shall be provided the opportunity to monitor and witness all QC testing.
F.Hot Mix Asphalt Testing. The Contractor’s QC personnel will perform Quality Control testing at the HMA production facility to ensure that the production processes are providing work conforming to the contract requirements. The Engineer shall be provided the opportunity to monitor and witness all QC testing of HMA. All QC testing of HMA Lots shall be in accordance with the current AASHTO, ASTM, NETTCP, or Department test methods specified in Table 702.65 -1. Table 702.65- 1: Minimum Quality Control Sampling & Testing of HMA Sidewalks and Driveways Lots Quality Characteristic Test Method(s) Sublot Size Minimum Test Frequency Point of Sampling Sampling Method PG Asphalt Binder Content AASHTO T 308 1,200 tons 1 per Sublot (See Note 1) From Haul Vehicle at Plant Random AASHTO R 97 and R 47 Combined Aggregate Gradation (See Note 2) AASHTO T 30 1,200 tons 1 per Sublot (See Note 1) From Haul Vehicle at Plant Random AASHTO R 97 and R 47 In-place HMA Mat Density (Density Gauge) AASHTO T 343 or T 355 Each Driveway 1 per Sublot (See Note 1) From Compacted HMA Course Selective & Random AASHTO T 343 or T 355 Note 1: In the event that the total daily HMA production is less than one Sublot, a minimum of one random QC sample shall be obtained for the day’s production. Note 2: The combined aggregated gradation shall conform to the requirements of 450.65: Quality Control Sampling and Testing Requirements , Part F(4). 702.66: Quality Control Documentation and Data Evaluation
A.QC Inspection Documentation & Evaluation. The Contractor shall document all QC inspection activities for each HMA Lot produced and placed. All inspection results shall be recorded within 24 hours of inspection on current NETTCP standard IRFs. The QC Manager shall evaluate inspection results in a t imely manner to confirm that production and placement processes are in control. The Contractor shall submit hard copies of all IRFs to the Engineer at the completion of each Lot. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.333 202 4 Edition B. QC Sampling and Testing Documentation & Data Analysis. The Contractor shall document all QC sampling and testing data for each HMA Lot produced and placed. All sampling and testing data shall be recorded within 24 hours of sampling and testing on current NETTCP standard TRFs. The QC Manager shall evaluate sampling and testing results in a timely manner, as further outlined below, to confirm that production and placement processes are in control. The Contractor shall submit hard copies of all TRFs to the Engineer at the completion of each Lot.
C.Evaluation of Individual Sublot QC Test Results. The Contractor shall evaluate the individual QC test results for each HMA Lot produced and placed. Each random QC test result shall be evaluated against the applicable Quality Limits within 24 hours of testing. Each Sublot test value shall be within the ap plicable Engineering Limits specified in Table
702.76 1.
If the evaluation of the QC testing data indicates that an individual Sublot is not in conformance with the applicable Engineering Limits, the Contractor shall follow the requirements of 702.67: Corrective Action . 702.67: Corrective Action As part of the Contractor’s QC System, the Contractor shall implement corrective action for any part of a Lot that is determined by inspection or testing to not be in conformance with the quality requirements specified in this specification. If the results of QC inspection identify nonconforming material or workmanship within one or more Sublots, or if the evaluation of the QC testing data indicates that any Sublot is not in conformance with the applicable Quality Limits, the Contractor shall isolate the Su blot(s) and perform additional inspection or testing to further assess the quality of the Sublot. Selective inspection or testing should be used to determine the limits of non - conformance. If a Sublot test result is outside of the Engineering Limits, the Q C Manager and the Engineer will further assess the Sublot quality to determine whether the material in the Sublot can remain in place in accordance with 702.76: Lot Acceptance Determination Based on Testing Data, Part (2). Based on the results of additional inspection or testing, the Contractor shall prepare a plan of corrective action for the nonconforming Sublot(s). The corrective action plan shall be submitted to and approved by the Engineer prior to initiating corrective action. All corrective action shall be performed at the Contractor’s expense.
702.68 : Quality Control Records System
The Contractor’s Quality Control Records System shall conform to applicable requirements of 450.68: Quality Control Records System . DEPARTMENT ACCEPTANCE 702.70: General The Engineer is responsible for performing all Acceptance activities and making the final Acceptance determination for each Lot produced and placed. The Engineer’s Acceptance System will include monitoring the Contractor’s QC activity and performing Acceptance inspection, Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.334 202 4 Edition sampling, and testing in order to determine the Quality and corresponding payment for each Lot. These activities will be performed for each HMA Lot as outlined further below. 702.71: Acceptance System Approach For all Lots, the Engineer’s Acceptance determination will be based on the Engineer’s Acceptance inspection information and Acceptance testing data. The Engineer will perform Acceptance sampling and testing on a minimum of 50% of the Sublots produced and p laced. 702.72: Engineer Monitoring of Contractor Quality Control The Engineer will monitor the Contractor’s QC System to confirm that QC activities are being performed for each Lot in compliance with this specification and the approved QC Plan. The Engineer will not perform the QC responsibilities of the Contractor or p rovide constant direction to the Contractor on how to perform Quality Control. The Engineer’s monitoring of QC activity will include the following: • Periodic visual observation of QC inspection, sampling, and testing. • Reviewing QC documentation and records. • Providing feedback based on monitoring findings. When deficiencies in the Contractor’s QC System are identified and documented by the Engineer, the Contractor shall take immediate action to address the deficiencies and coordinate appropriate corrective actions with the Engineer. If the material in an HMA Lot where deficiencies in the Contractor’s QC System were identified is removed and replaced, and the replacement HMA complies with the Specification requirements, no further action will be required. If the Contractor fails to acknowledge the deficiency and take appropriate action, the Contractor shall suspend production and placement of the corresponding Lot(s). Failure by the Contractor to comply with the Quality Control requirements in either this specification or the approved QC Plan may result in the withholding of payment. 702.73: Acceptance Inspection The Engineer will perform Acceptance inspection of all work items addressed under Subsection 702: Hot Mix Asphalt Sidewalks and Driveways to ensure that all materials and completed work are in conformance with the contract requirements. Acceptance inspection is intended to visually assess the quality of each HMA Lot produced and placed and will address only the inspection components of Mate rials and Workmanship in support of the Department’s final acceptance determination. All Acceptance inspection activity by the Department will be performed independent of the Contractor’s QC inspection. The Engineer will document the results and findings of Acceptance inspection. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.335 202 4 Edition Table 702.73- 1: Department Acceptance Inspection at Sidewalks and Driveway s Inspection Component Inspection Attribute Minimum Inspection Frequency Point of Inspection Inspection Method Materials HMA Mixture (Correct Type) 1 per Day On Site Visual Check & Delivery Ticket Workmanship Physical Segregation 50% of Sublots Compacted HMA Visual Check Cross- Slope 50% of Sublots Finished HMA Surface Check Measurement Surface Deviation 50% of Sublots Finished HMA Surface 10-ft standard straightedge Surface Deviation. The Engineer will inspect the pavement for Surface Deviations using a 10 -ft standard straightedge in accordance with the procedures outlined in 702.64: Quality Control Inspection . 702.74: Acceptance Sampling & Testing
A.Random Sampling. The Engineer will utilize stratified random sampling in accordance with 450.65: Quality Control Sampling and Testing Requirements, Part A. The Engineer will obtain all random Acceptance samples independent of the Contractor’s QC samples at the frequencies outlined below. The Engineer will obtain Acceptance samples from a minimum of 50% of all Sublots for the applicable Quality Chara cteristics specified in Table 702.74 -1.
B.Selective Sampling. The Engineer will utilize selective sampling (i.e. , non-random samples) in accordance with 450.65: Quality Control Sampling and Testing Requirements, Part B.
C.Acceptance Sample Identification System. The Engineer will use a standard system for the identification of all Acceptance samples. All HMA samples will be labeled by the Engineer with the minimum information indicated under 702.65: Quality Control Sampling and Testing, Part C.
D.Retention of Split Samples. The Engineer’s personnel will obtain all material samples for Acceptance testing. The Engineer will retain Acceptance split samples from each HMA loose mix sample in accordance with 702.65: Quality Control Sampling and Testing, Part D.
E.Hot Mix Asphalt Testing. The Engineer will perform Acceptance testing using random samples obtained in accordance with 702.74: Acceptance Sampling & Testing , Part A from the HMA production facility. The specific Quality Characteristics subject to the Engineer’s Acceptance testing are identified in Table 702.74 -1. All Acceptance testing of HMA Lots will be performed by the Engineer in accordance with the Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.336 202 4 Edition AASHTO, ASTM, NETTCP, or Department test methods specified in Table 702.74 -1. Testing performed on samples obtained from the HMA production facility shall be performed by a NETTCP certified HMA Plant Technician. Table 702.74- 1: Engineer’s Acceptance Sampling and Testing of HMA Sidewalks and Driveways Lots Quality Characteristic Test Method(s) Sublot Size Minimum Test Frequency Point of Sampling Sampling Method PG Asphalt Binder Content AASHTO T 308 1,200 tons 50% of Sublots From Haul Vehicle at HMA Plant Random AASHTO R 97 and R 47 Combined Aggregate Gradation (See Note 1) AASHTO T 30 1,200 tons 50% of Sublots From Haul Vehicle at HMA Plant Random AASHTO R 97 and R 47 In-place HMA Mat Density (Density Gauge) AASHTO T 343 or T 355 Each Driveway 50% of Sublots From Compacted HMA Course Selective & Random AASHTO T 343 or T 355 Note 1: The combined aggregated gradation shall conform to the requirements of 450.65: Quality Control Sampling and Testing Requirements , Part F(4). 702.75: Lot Acceptance Determination Based on Inspection Results The Engineer’s Acceptance inspection results will be used in the final Acceptance determination for all Lots. Prior to final Acceptance of each Lot produced and placed, the Engineer will periodically evaluate all Acceptance inspection information for the prepared underlying surface and the Lot. The materials and product workmanship for the completed work will be evaluated for conformance with the plans and the requirements specified in 702.40: General through 702.42: Construction of Hot Mix Asphalt Sidewalks and Driveways . When the Acceptance information identifies deficiencies in either material quality or product workmanship for any underlying surface location or Sublot(s), the location or Sublot(s) will be isolated and further evaluated by the Engineer through additional Acceptance inspection (or sampling and testing, if relevant or possible). Depending upon the findings of the additional Acceptance inspection activity, the Engineer will determine the disposition of the nonconforming work in accordance with Subsection 5.03: Conformity with Plans and Specifications. After each Lot (and corresponding prepared underlying surface) is complete, including any corrective action, the Engineer will evaluate all Acceptance inspection information for the Work. The Engineer will accept the subject Work if the Engineer’s evaluati on of all inspection information for the completed Lot (and underlying surface) indicates that the corresponding materials and product workmanship meet the specified requirements (provided the evaluation of all Acceptance testing data for the subject work per 702.76: Lot Acceptance Determination Based on Testing Data also finds the work to be acceptable). Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.337 202 4 Edition 702.76: Lot Acceptance Determination Based on Testing Data Evaluation of Lot Testing Data. Prior to final acceptance of each Lot produced and placed; the Engineer will periodically evaluate all available Acceptance testing data for the Lot.
1.Conformance with Engineering Limits. The Engineer will evaluate all Acceptance testing data and Contractor QC testing data for each Lot to determine conformance with the Engineering Limits in Table 702.76 -1. Each Sublot test value for the Acceptance Quality Characteristics identified in Table 702.76 -1 shall be within the Engineering Limits. If a Sublot test result is outside of the Engineering Limits, the QC Manager and Engineer will further assess the Sublot quality to determine whether the material in the Sublot can remain in place. The Engineer will determine the disposition of the Sublot in accordance with Subsection 5.03: Conformity with Plans and Specifications. If the Engineer’s assessment determines that the material quality is not sufficient to permit the Sublot to remain in place the Sublot shall be removed and replaced. When a nonconforming Sublot is corrected or replaced, the Engineer will perform Acceptance testing of the Sublot and evaluate the test results for conformance with the Engineering Limits. Once the above requirements have been met, the Engineer will accept all completed Sublots.
2.Final Lot Acceptance Determination. For each Lot produced and placed, the Engineer will evaluate all Acceptance testing data for the Lot after all Sublots are complete in -place. After each Lot is complete, including any corrective action, the Engineer will perform a final evaluation of all Acceptance data and Contractor QC data for the Lot. The Engineer will accept the Lot if the Engineer’s evaluation of all testing data for the L ot is in conformance with this specification and the contract documents. Table 702.76- 1: Quality Limits for Acceptance of HMA Lots Quality Characteristic Target Lower Engineering Limit Upper Engineering Limit PG Asphalt Binder Grading Per Binder Grade Specified Per Binder Grade Specified Per Binder Grade Specified PG Asphalt Binder Content Per JMF Target - 0.4% Target + 0.4% In-Place HMA Mat Density (Density Gauge) 95 % of G mm 91.5 % of G mm 98.5 % of G mm COMPENSATION 702.80: Method of Measurement Hot Mix Asphalt Sidewalk or Driveway will be measured by the ton. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.338 202 4 Edition Gravel Borrow will be measured by the cubic yard as specified in 150.80: Method of Measurement . Fine grading and compacting will be measured by the square yard as specified in 170.80 Method of Measurement . 702.81: Basis of Payment Hot Mix Asphalt Sidewalk or Driveway will be paid for at the contract unit price per ton complete in place. Gravel will be paid for at the contract unit price per cubic yard under Item 151., Gravel Borrow. Fine grading and compacting will be paid for at the contract unit price per square yard under Item 170., Fine Grading and Compacting – Subgrade Areas. Excavation will be paid for at the contract unit price per cubic yard under the excavation items. All required sawcutting in the existing pavement in accordance with this specification will be included in the contract unit price for Hot Mix Asphalt Sidewalks and Driveways . 701.82: Payment Items 702. Hot Mix Asphalt Sidewalk or Driveway .............................................................. Ton SUB
Source: , Edition.