Performance-Based Pavement Warranty Practices (2020)

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A P P E N D I X E Michigan DOT Warranty Information E-1 Guidelines for Administering Warranties on Road and Bridge Construction Contracts Available at: https://www.michigan.gov/documents/mdot/MDOT_WarrentyGuide_225426_7.pdf. Material and Workmanship Pavement Warranty (12SP-500A-04) Available at: https://mdotcf.state.mi.us/public/dessssp/spss_source/12SP-500A-04.pdf a. Description. The materials and workmanship pavement warranty consists of the warranty bond, the terms of this special provision, and the Special Provision for Warranty Work included in the contract. This special provision establishes the common terms and definitions applied to pavement projects requiring a warranty. The Materials and Workmanship Pavement Warranty warrants the Department against defects in materials and workmanship. b. Definitions. Acceptance Date of Construction. The date when the warranted work is complete and confirmed in writing on the initial acceptance document, by the Department, to be in compliance with the contract specifications and is open to traffic. This is the date of initial acceptance and constitutes the start date for the warranty period. There may be more than one acceptance date of construction for a project. Conflict Resolution Team (CRT). The five-person team responsible for resolving disputes between the Department and the Contractor regarding any claim of non-compliance with the warranty requirements. Concrete Pavement Distresses A. Crack. A visible fissure or surface discontinuity that may or may not extend through the entire slab/pavement. Cracks may be singular or in multiple patterns. Crack types are: 1. Corner. Orientation is generally diagonal and located near a slab corner. It intersects both the transverse and longitudinal pavement joints. 2. Longitudinal. A crack, at least five feet in length, that is oriented primarily in the longitudinal direction versus the transverse direction. That is, the angle between the overall crack line and the centerline is less than 45 degrees. It can exist anywhere in the driving lane; i.e., at the pavement centerline joint, wheel path, center of lane, or lane/shoulder joint. 3. Map. Interconnecting, variable spaced cracks in a random orientation and pattern. 4. Transverse. A crack, at least five feet in length, that is oriented primarily in the transverse direction versus the longitudinal direction. That is, the angle between the overall crack line and the transverse line is less than 45 degrees. It can be either straight or irregular in direction. B. C. Scaling. The concrete surface has a visible, exposed, rough texture from a loss of either aggregate or mortar. D. Shattered Slab. A pavement slab broken into four or more sections by full-depth cracks. Joint Sealant Failure. The loss of material integrity consisting of either adhesive failure (debonding), cohesive failure (material separation), or the complete loss of sealant material.

E-2 Performance-Based Pavement Warranty Practices E. Spall. Broken or missing piece of concrete contiguous with the perimeter edge of a slab with a surface area exceeding two square inches. F. Driving Lane(s). The delineated pavement surface used by traffic and the portion of the pavement considered warranted work. Each of the following is considered a separate driving lane. - Each individual mainline lane. - The sum of all ramp lanes and the associated acceleration/deceleration lanes is considered a separate driving lane. - The sum of all auxiliary lanes, such as passing lanes and turn lanes, is considered a separate driving lane. Approaches, driveways, shoulders, and adjoining transition tapers between various types of pavement are not considered driving lanes for the purpose of this provision. HMA Pavement Distresses A. Crack. A visible fissure or surface discontinuity that may or may not extend through the entire slab/pavement. Cracks may be singular or in multiple patterns. Crack types are: 1. Alligator. Parallel longitudinal cracks with transverse tears between them exhibiting a pattern similar to an alligator hide. An alligator crack typically starts in a wheel path and may extend to other lane locations. 2. Block. Transverse and longitudinal cracking that has progressed to a pattern that the pavement is broken into blocks of size less than 12 foot by 12 foot. The shape of each block may be irregular. 3. Longitudinal/Open Joint. A crack, at least five feet in length, that is oriented primarily in the longitudinal direction versus the transverse direction. That is, the angle between the overall crack line and the centerline is less than 45 degrees. It can exist anywhere in the driving lane; i.e., at the pavement centerline joint, wheel path, center of lane, or lane/shoulder joint. 4. Transverse. A crack, at least five feet in length, that is oriented primarily in the transverse direction versus the longitudinal direction. That is, the angle between the overall crack line and the transverse line is less than 45 degrees. It can be either straight or irregular in direction. B. Debonding. A physical separation of two HMA layers. Debonding will be visually identified as shoving, or the loss of the new surface course. Surface potholes, regardless of depth, will be classified as debonding. C. Flushing. The accumulation of excess asphalt binder on the pavement surface that creates a shiny, reflective condition and becomes tacky to the touch at high temperatures. D. Raveling. Surface disintegration, due to the loss of coarse or fine aggregate material, that occurs over an area or in a continuous longitudinal strip. E. Rutting. A longitudinal surface depression in the wheel path. It may have associated transverse displacement or humping. Materials and Workmanship Warranty. The Contractor is responsible for correcting defects in the pavement caused by elements within the Contractor’s control (i.e., the materials supplied and the workmanship), during the warranty period. Since the Department is responsible for the pavement design, the Contractor assumes no responsibility for defects that are design related. If a defect is attributable to both, the materials and/or workmanship, and the design, responsibility for correcting the defect will be shared by the Department and the Contractor; the Contractor is responsible for the percentage of fault attributable to the workmanship and/or materials, and the Department is responsible for the percentage of fault attributable to the design. Slab. The concrete pavement outlined between consecutive transverse joints and longitudinal joints or a longitudinal joint and the outer edge. Warranty Bond. A bond issued by a surety which guarantees that the warranty requirements will be met. Warranty Work. Corrective action taken to correct a deficient pavement as outlined in the applicable warranty special provision. c. Initial Acceptance. The Department and the Contractor must jointly review all completed warranted work, or a portion thereof, as determined by the Department. If the work does not meet contract requirements, the

Michigan DOT Warranty Information E-3 Contractor must make all necessary corrections, at their expense, prior to initial acceptance. Initial acceptance will occur as soon as the Department confirms in writing, on the initial acceptance form, that contract requirements have been met for the warranted work. The date on which initial acceptance occurs is termed the Acceptance Date of Construction. Initial acceptance will be documented and executed jointly by the Department and the Contractor on a form furnished by the Department. A copy of the form will be sent to the Contractor’s warranty bond surety agent by the Department. Neither the initial acceptance nor any prior inspection, acceptance or approval by the Department diminishes the Contractor’s responsibility under this warranty. The Department may accept the work and begin the warranty period, excluding any area needing corrective work, to accommodate seasonal limitations or staged construction. Acceptance of material, in penalty, under the Department’s quality assurance program will not relieve the Contractor from meeting the material and workmanship warranty requirements for the accepted material. d. Warranty Bond. Furnish a single term warranty bond, in an amount stipulated in the Special Provision for Warranted Work Requirements, prior to contract award. The effective starting date of the warranty bond will be the Acceptance Date of Construction. The warranty bond will be released at the end of the warranty period or after all warranty work has been satisfactorily completed, whichever is latest. e. Rights and Responsibilities of the Department. The Department: 1. Reserves the right to approve the schedule proposed by the Contractor to perform warranty work. 2. Reserves the right to approve all materials and specifications used in warranty work. 3. Reserves the right to determine if warranty work performed by the Contractor meets the contract specifications. 4. Reserves the right to perform, or have performed, routine maintenance during the warranty period, which routine maintenance will not diminish the Contractor’s responsibility under the warranty. 5. Reserves the right, if the Contractor is unable, to make immediate emergency repairs to the pavement to prevent an unsafe road condition as determined by the Department. The Department will attempt to notify the Contractor that action is required to address an unsafe condition. However, should the Contractor be unable to comply with this requirement, to the Department’s satisfaction and within the time frame required by the Department, the Department will perform, or have performed any emergency repairs deemed necessary. Any such emergency repairs undertaken will not relieve the Contractor from meeting the warranty requirements of this special provision. Any costs associated with the emergency repairs, including but not limited to all maintaining traffic and restoring all associated pavement features will be paid by the Contractor if it is determined the cause was from defective materials and/or workmanship. 6. Reserves the right, if the Contractor is unresponsive, to call the surety to complete the applicable warranty work. 7. Is responsible for monitoring the pavement throughout the warranty period and will provide the Contractor all written reports of the surface treatment’s condition related to the warranty requirements. The Contractor will not be relieved of any responsibility based upon a claim that the Department failed to adequately monitor the pavement or to report its findings to the Contractor. 8. Is responsible for notifying the Contractor, in writing, of any corrective action required to meet the warranty requirements. f. Rights and Responsibilities of the Contractor. The Contractor: 1. Must warrant to the Department that the warranted work will be free of defects in materials and workmanship. Ensure the warranty bond is described on a form furnished by the Department. Submit the completed form to the Department prior to award of contract. 2. Is responsible for performing all warranty work including, but not limited to, maintaining traffic and restoring all associated pavement features, at the Contractor’s expense. 3. Is responsible for performing all temporary or emergency repairs, resulting from being in non-compliance with the warranty requirements, using Department approved materials and methods.

E-4 Performance-Based Pavement Warranty Practices 4. Must notify the Department and submit a written course of action for performing the needed warranty work a minimum of 10 calendar days prior to commencement of warranty work, except in the case of emergency repairs as detailed in this special provision. The submittal must propose a schedule for performing the warranty work and the materials and methods to be used. 5. Must follow a Department approved maintaining traffic plan when performing warranty work. Ensure all warranty work is performed under permit issued by the TSC Permits Staff. The permit fee and an individual permit performance bond will not be required. The permit insurance requirements, however, will apply. 6. Will be responsible for reimbursing the Department a portion of any incentive payments paid to the Contractor for early completion of the original work. Reimbursements will be required if the proposed maintaining traffic plan for corrective action requires lane closures during peak hour traffic. Peak hours will be determined by the Region Traffic and Safety Engineer. The daily reimbursement amount must not exceed 25 percent of the original daily earned incentive payment. The Department will determine the actual percentage on a project by project basis. 7. Must furnish to the Department, if warranty work is required, a supplemental lien bond in the amount required by the Department to cover the costs of warranty work using Department approved forms. Supplemental lien bond must be furnished prior to beginning any warranty work. 8. Must complete all warranty work prior to conclusion of the warranty period, or as otherwise agreed to by the Department. 9. Will be liable during the warranty period in the same manner as Contractors currently are liable for their construction related activities with the Department pursuant to the standard specifications, including, but not limited to subsections 104.07.C, 107.10, and 107.11. This liability will arise and continue only during the period when the Contractor is performing warranty work. This liability is in addition to the Contractor performing and/or paying for any required warranty work, and will include liability for injuries and/or damages and any expenses resulting therefrom which are not attributable to normal wear and tear of traffic and weather, but are due to non-compliant materials, faulty workmanship, and to the operations of the Contractor as set forth more fully in subsections 104.07.C, 107.10 and 107.11 of the Standard Specification for Construction. g. Evaluation Method. The Department will conduct pavement evaluations by dividing the project into segments. Each individual driving lane will be divided into segments of 528 feet (1/10 mile) in length for measuring and quantifying the condition parameters. Evaluation will include use of both the Department’s Pavement Management System and/or field pavement condition reviews. This evaluation may be waived in emergency situations. The beginning point for laying out segments will be the Point of Beginning (POB) of the project. Segments will be laid out consecutively to the Point of Ending (POE) of the project. The original segmentation of the project will be used for all successive reviews throughout the warranty period. h. Condition Parameters. Condition parameters are used to measure the performance of the warranted pavement during the warranty term. Each condition parameter has a threshold level applied to each segment and a maximum number of defective segments allowed before corrective action (warranty work) is required. During the warranty period, the Contractor will not be held responsible for pavement distresses that are caused by factors unrelated to materials and workmanship. These include, but are not limited to: chemical and fuel spills, vehicle fires, snow plowing, and quality assurance testing such as coring. Other factors considered to be beyond the control of the Contractor which may contribute to pavement distress will be considered by the Engineer on a case by case basis upon receipt of a written request from the Contractor. i. Warranty Requirements. Warranty work will be required when the following two criteria are met as a result of a defect in materials and/or workmanship. Criterion 1 - The threshold limit for a condition parameter is exceeded, and Criterion 2 - The maximum allowable number of defective segments is exceeded for one or more condition parameters for a driving lane. Specific threshold limits and segment limits are covered in the Special Provision for Warranted Work.

Michigan DOT Warranty Information E-5 (NCHRP) Report 747 “Guide for Conducting Forensic Investigations of Highway Pavements.” If agreement cannot be reached, either party may serve written notice that appointment of a Conflict Resolution Team (CRT) is required. The CRT shall be convened in accordance with this special provision. To determine whether the failure to meet the warranty criteria is a result of defects in materials and/or workmanship, a joint field investigation by the Department and the Contractor will be conducted. The Department and/or Contractor may elect to have a forensic investigation conducted. The decision to undertake a forensic investigation, the scope of it, and the selection of the party to conduct it will be agreed to by the Department and the Contractor. The forensic investigation will be conducted following the National Cooperative Highway Research Program. j. Conflict Resolution Team. The sole responsibility of the Conflict Resolution Team (CRT) is to provide a decision on disputes between the Department and the Contractor regarding application or fulfillment of the warranty requirements. The CRT will consist of five members: Two members selected, and compensated by the Department. Two members selected and compensated by the Contractor. One member mutually selected by the Department and the Contractor. Compensation for the third party member will be equally shared by the Department and the Contractor. The CRT may decide to conduct a forensic investigation, will determine the scope of work, and select the party to conduct the investigation. All costs related to the forensic investigation will be shared proportionately between the Contractor and the Department based on the determined cause of the condition. The forensic investigation will be conducted following the NCHRP Report 747 “Guide for Conducting Forensic Investigations of Highway Pavements.” k. Emergency Repairs. If the Department determines that emergency repairs are necessary for public safety, the Department or its agent may take repair action. Emergency repairs must be authorized by the Region Engineer. Prior to emergency repairs, the Department will document the basis for the emergency action. In addition, the Department will preserve evidence of the defective condition. l. Non-extension of Contract. This special provision must not be construed as extending or otherwise affecting the claim process and statute of limitation applicable to this Contract. m. Measurement and Payment. All costs, including engineering and maintaining traffic costs, associated with meeting the requirements of this special provision are considered to be included in the Contract unit prices for the warranted work items regardless of when such costs are incurred throughout the warranty period. These costs include but are not limited to, all materials, labor, and equipment necessary to complete required warranty work.

E-6 Performance-Based Pavement Warranty Practices Pavement Performance Warranty (12SP-500B-03) a. Description. The pavement performance warranty consists of satisfying the warranty requirements of the work contained in the special provision for Warranty Work Requirements. This special provision establishes the common terms and definitions applied to the pavement requiring warranted work. The pavement performance warranty assures and protects the Department from specific defects found in the pavement. b. Definitions. Abrasion. The wearing away of treatment material by tire friction or snowplow scraping. Acceptance Date of Warranted Work. The date when the warranted work is complete, has been determined by the Department to be in compliance with the contract specifications,and is continuously open to traffic. This is the date of initial acceptance and constitutes the start date for the warranty period. There may be more than one acceptance date of warranted work for a project. Adhesion. The bonding of a material to crack sidewalls and the pavement surface. Bleeding/Flushing. The accumulation of excess asphalt binder on the pavement surface that creates a shiny, reflective condition and becomes tacky to the touch at high temperatures. Cohesion. The resistance of a material to internal rupture.

Michigan DOT Warranty Information E-7 Debonding. A physical separation of two HMA layers. De-bonding will be visually identified as shoving, or the loss of the surface course. Surface potholes, regardless of depth, will be classified as de-bonding. Driving Lane(s). The delineated pavement surface used by traffic. Each of the following is considered a separate driving lane. - Each individual mainline lane and adjacent shoulder - The sum of all ramp lanes and the associated acceleration/deceleration lanes - The sum of all auxiliary lanes, such as passing lanes and turn lanes Approaches and driveways are not considered driving lanes for the purpose of this special provision. Longitudinal Crack. Any open crack in the individual driving lanes that extends more in the longitudinal direction than the transverse direction. Loss of Cover Aggregate. Areas of dislodged and removed aggregate from the chip seal surface caused by the mechanical action of vehicles. Chip seal damage from snow plows will not be considered defective if both the aggregate and asphalt emulsion have been removed from the underlying pavement surface. When asphalt emulsion remains on the surface without aggregate, the chip seal is defective. This parameter applies to all treated areas, including driving lanes and shoulders. Non-Working Cracks. Cracks that experience relatively little horizontal or vertical movement as a result of temperature change or traffic loading. As a general rule, movement less than 1/8 inch. Opening to Traffic. The allowance of vehicles on the newly chip sealed pavement with or without the use of reduced speeds and/or a pilot car. Overband. A type of finish in which material is allowed to completely cover prepared cracks by extending onto the pavement surface. Raveling. Surface disintegration, due to the loss of aggregate material, that occurs over an area or in a continuous longitudinal strip. Wear caused by snowplow abrasion is not considered raveling. Reservoir. A uniform rectangular channel resulting from crack sawing operations. Rutting. Longitudinal surface depressions in the wheel path of a HMA pavement caused by inadequate compaction or plastic movement of the asphalt mixture. Surface Cracking. The total number of defective cracks within a 528 feet segment. Transverse Crack. Any open crack that equals or exceeds 6 feet in length in the individual driving lanes that extends more in the transverse direction than the longitudinal direction. Treatment Failure. The degree to which a treatment is not performing its function. This includes areas along the sealed or filled crack exhibiting loss of adhesion or cohesion or pull-out of material. Sealant materials displaying abrasion are not performing, unless there is a definable upheaval in the pavement profile along crack edges that allows snowplow scraping to wear away material. Warranted Work. Work that is guaranteed not to exceed the specified thresholds of performance during the warranty period. Warranty Bond. A surety which guarantees that the warranty requirements will be met. Warranty Work. Corrective action by the Contractor to bring the warranted work back into compliance. All costs will be borne by the Contractor including traffic control, mobilization, pavement marking, and/or other related work. Working Cracks. Cracks that experience considerable horizontal or vertical movement as a result of temperature change or traffic loading. In general, movement greater than, or equal to 1/8 inch. c. Initial Acceptance. The Department and the Contractor must jointly review all completed warranted work, or a portion thereof, as determined by the Department. If the work does not meet contract requirements, the Contractor must make all necessary corrections, at their expense, prior to initial acceptance. Initial acceptance will occur as soon as the Department determines that all contract requirements have been met for the warranted work. The initial acceptance date on warranties that include a Delayed Acceptance, will be the date that the warranted work was completed and opened to traffic if no deficiencies are observed in the delay period,

E-8 Performance-Based Pavement Warranty Practices or the date that all corrective work was completed for any deficiencies that were observed in the delay period. The date on which initial acceptance occurs is termed the Acceptance Date of Warranted Work. Initial acceptance will be documented and executed jointly by the Department and the Contractor on a form furnished by the Department. A copy of the form will be sent to the Contractor’s warranty bond surety agent, by the Department. Neither the initial acceptance nor any prior inspection, acceptance, or approval by the Department diminishes the Contractor’s responsibility under this warranty. The Department may accept the work and begin the warranty period to accommodate seasonal limitations or staged construction, excluding any area needing corrective work. d. Warranty Bond. Furnish a single term warranty bond of the amount stipulated in the special provision for Warranty Work Requirements, prior to contract award. The effective starting date of the warranty bond will be the Acceptance Date of Warranted Work. The warranty bond will be released at the end of the warranty period or after all warranty work has been satisfactorily completed, whichever is later, and a form furnished by the Department is jointly executed by the Department and the Contractor. e. Rights and Responsibilities of the Department. The Department: 1. Reserves the right to approve the time, traffic control, and methods for performing any warranty work by permit through the Region utilities and permit process. 2. Reserves the right to approve the schedule proposed by the Contractor to perform warranty work. 3. Reserves the right to approve all materials and specifications used in warranty work. 4. Reserves the right to determine if warranty work performed by the Contractor meets the contract specifications. 5. Reserves the right to perform, or have performed, routine maintenance during the warranty period, which routine maintenance will not diminish the Contractor’s responsibility under the warranty. 6. Reserves the right, if the Contractor is unable, to make immediate emergency repairs to the pavement to prevent an unsafe road condition caused by defective warranted work as determined by the Department. The Department will attempt to notify the Contractor that action is required to address an unsafe condition. The Department will record the time and date of the attempts for Contractor notification. However, should the Contractor be unable to comply with this requirement, to the Department’s satisfaction and within the required time frame specified by the Department, the Department will perform, or have performed any emergency repairs deemed necessary. Any such emergency repairs undertaken will not relieve the Contractor from meeting the warranty requirements of this special provision. Any costs associated with such emergency repairs will be paid by the Contractor. 7. Is responsible for monitoring the pavement throughout the warranty period and will provide the Contractor any written reports of the surface condition and/or maintenance activities related to pavement performance when requested. 8. Is responsible for notifying the Contractor, in writing, of any corrective action required to meet the warranty requirements. f. Rights and Responsibilities of the Contractor. The Contractor: 1. Must warrant to the Department that the warranted work will be free of defects as measured by the performance parameters and specified threshold values for each. Ensure the warranty bond is described on a form furnished by the Department. Submit the completed form to the Department prior to award of contract. 2. Is responsible for performing all warranty work including, but not limited to, maintaining traffic and restoring all associated pavement features, at the Contractor’s expense. 3. Is responsible for performing all temporary or emergency repairs, resulting from being in non-compliance with the warranty requirements, using Department approved materials and methods. 4. Must notify the Department and submit a written course of action for performing the needed warranty work, 10 calendar days prior to commencement of said warranty work, except in the case of emergency repairs as detailed in this special provision. The submittal must propose a schedule for performing the warranty work and the materials and methods to be used.

Michigan DOT Warranty Information E-9 5. Must follow a Department approved maintaining traffic plan when performing warranty work. Ensure all warranty work is performed under permit issued by the Region Utilities and Permits Engineer. The permit fee and an individual permit performance bond will not be required. The permit insurance requirements, however, will apply. 6. Must furnish to the Department, in addition to the regular performance and lien bond for the contract, supplemental performance and lien bonds covering any warranty work being performed. Furnish these supplemental bonds prior to beginning any warranty work, using Department approved forms. Ensure these supplemental bonds are in the amount required by the Department to cover the costs of warranty work. 7. Must complete all warranty work required by this special provision and prior to conclusion of the warranty period, or as otherwise agreed to by the Department. 8. Will be liable during the warranty period in the same manner as Contractors currently are liable for their construction related activities with the Department pursuant to the Standard Specifications for Construction, including, but not limited to subsections 104.07.C, 107.10 and 9. 107.11. This liability will arise and continue only during the period when the Contractor is performing warranty work. This liability is in addition to the Contractor performing and/or paying for any required warranty work, and must include liability for injuries and/or damages and any expenses resulting therefrom which are not attributable to normal wear and tear of traffic and weather, but are due to non - compliant materials, faulty workmanship, and to the operations of the Contractor as set forth more fully in subsections 104.07.C, 107.10 and 107.11 of the Standard Specifications for Construction. g. Evaluation Method. The Department will conduct pavement evaluations by dividing the project into segments. Each individual driving lane will be divided into segments of 528 feet for measuring and quantifying the condition parameters. Evaluation may include use of both the Department’s Pavement Management System and/or field pavement condition reviews. This evaluation may be waived in emergency situations. The beginning point for laying out segments will be the Point of Beginning (POB) of the project. Segments will be laid out consecutively to the Point of Ending (POE) of the project. The original segmentation of the project will be used for all successive reviews throughout the warranty period. h. Condition Parameters. Condition parameters are used to measure the performance of the warranted work during the warranty period. Each condition parameter has a threshold level applied to each segment and defines the number of defective segments allowed before corrective action (warranty work) is required. i. Warranty Requirements. Warranty work will be required when the following two criteria are both met as a result of a failure to meet the performance parameters. Criterion 1 - The threshold limit for a performance parameter is exceeded, and Criterion 2 - The maximum allowable number of defective segments is exceeded for one or more performance parameters for a driving lane, unless otherwise noted in the appendix. Specific threshold limits and segment limits are covered in the appendix. During the warranty period, the Contractor will not be held responsible for pavement distresses that are caused by factors beyond his control and unrelated to design decisions made by the Contractor, pavement construction or materials. These include, but are not limited to: chemical and fuel spills, vehicle fires, snow plowing, and any testing by the Department, such as coring. Other factors considered to be beyond the control of the Contractor, which may contribute to pavement distress will be considered by the Engineer on a case by case basis upon receipt of a written request from the Contractor. j. ConflictResolution Team. The sole responsibility of the Conflict Resolution Team (CRT) is to provide a decision on disputes between the Department and the Contractor regarding application or fulfillment of the warranty requirements. The CRT will consist of five members: 1. Two members selected and compensated by the Department. 2. Two members selected and compensated by the Contractor. 3. One member mutually selected by the Department and the Contractor. Compensation for the third party member will be equally shared by the Department and the Contractor.

E-10 Performance-Based Pavement Warranty Practices If a dispute arises on the application or fulfillment of the terms of this warranty, either party may serve written notice that appointment of a CRT is required. At least three members of the CRT must vote in favor of a motion to make a decision. If agreement cannot be reached, the CRT may decide to conduct a forensic investigation. The CRT will determine the scope of work and select the party to conduct the investigation. All costs related to the forensic investigation will be shared proportionally between the Contractor and the Department based on the determined cause of the condition. k. Emergency Repairs. If the Department determines that emergency repairs are necessary for public safety, the Department or its agent may take repair action. Emergency repairs will be authorized by the Engineer. Prior to emergency repairs, the Department will document the basis for the emergency action. In addition, the Department will preserve evidence of the defective condition. l. Non-Extension of Contract. This special provision must not be construed as extending or otherwise affecting the claim process and statute of limitation applicable to this contract. m. Measurement and Payment. All costs, including engineering and maintaining traffic costs, associated with meeting the requirements of this special provision are considered to be included in the contract unit prices for the warranted work regardless of when such costs are incurred throughout the warranty period. These costs include but are not limited to, all materials, labor, and equipment necessary to complete required warranty work.

Michigan DOT Warranty Information E-11 Warranty Work Requirements New/Reconstructed Hot Mix Asphalt Pavement on Unbounded or Stabilized Base a. Description. This special provision must be used in conjunction with 12SP-500A to construct new and reconstructed warranted pavement using Hot Mix Asphalt (HMA) placed on an unbound or stabilized aggregate base. b. Limits of Warranted Work. The warranted work includes all hot mix asphalt on driving lanes within the project limits unless otherwise indicated on the plans. c. Warranty Term. The warranty term will be 5 years from the date of Initial Acceptance otherwise termed the Acceptance Date of Construction. d. Warranty Bond. Supply a warranty bond equal to $1,000,000.00 or five percent of the total contract amount whichever is less. e. Initial Ride Quality Acceptance Criteria. Initial Ride Quality requirements are outlined in the contract. f. Warranty Requirements. Table 1 lists the allowable threshold limit for each condition parameter within each segment and the maximum number of allowable segments within a driving lane for each condition parameter. If any of the warranty requirements are not met, as a result of a defect in materials and/or workmanship, corrective action (warranty work) is required. The defective segments for surface distress may or may not be contiguous to necessitate corrective action. The maximum allowable number of defective segments for each condition parameter applies to each driving lane in each travel direction. Each driving lane will be evaluated independent of adjacent driving lanes. Any pavement surface requiring removal/replacement to correct deficiencies, for any condition parameter, must be replaced full-width across the driving lane. g. Corrective Actions. Table 2 lists recommended corrective actions to outline typical acceptable treatments for the various condition parameters. The Department will accept the listed corrective action if the action addresses the cause of the condition parameter. The Contractor may use an alternative action subject to Department approval. Table 1: Warranty Requirements Condition Parameter(a) Threshold Limits Per Segment(Length = 528 feet) Max. Defective Segments Per Driving Lane-Mile(b) Transverse Cracking 3 1 Longitudinal Cracking/Open Joint 10% of segment length 1 De-bonding 5% of segment length 1 Raveling 8% of segment length 1 Flushing 4% of segment length 1 Rutting(c) ave. rut depth = 3/8 inch(d) 1 (a) Any amount of Alligator and/or Block Cracking is an unacceptable condition, and will be removed and replaced as approved by the Engineer. (b) The maximum allowable number of defective segments per driving lane is determined by multiplying by the length of the specific driving lane in miles. (c) The rut depth threshold applies to each wheel path independently. (d) The pavement surface will be evaluated for the presence of rutting on each driving lane throughout the warranty period. The pavement surface will be measured beginning at the POB and every 132 feet thereafter to determine average rut depth to quantify rutting for a particular segment. Rut measurements will be done using a straight rigid device that is a minimum of 7 feet long and of sufficient stiffness that it will not deflect from its own weight, or a wire under sufficient tension to prevent sag when extended 7 feet. Measurements will be taken by placing this “straightedge” across the pavement surface perpendicular to the direction of travel. The straightedge must contact the surface on at least two bearing points with one located on either side of the rut. The straightedge is properly located when sliding the straightedge along its axis does not change the location of the contact points. Rut depth is then measured at the point of greatest perpendicular distance from the bottom of the straightedge to the pavement surface.

E-12 Performance-Based Pavement Warranty Practices Table 2: Recommended Corrective Actions Condition Parameter(b) Recommended Action Transverse Cracking Cut and Seal Longitudinal Cracking Cut and Seal De-bonding Mill and Resurface affected courses Raveling Mill and Resurface affected courses Flushing Mill and Resurface top course Rutting Microsurface or Mill and Resurface(a) (a) Recommended action is dependent on the depth of the rut susceptible material. (b) Any areas exhibiting Alligator or Block Cracking must be removed and replaced as directed by the Engineer. Multiple Course Hot Mix Asphalt Overlays on Concrete Pavement; Multiple Course Hot Mix Asphalt Overlays on Composite Pavement; Multiple Course Hot Mix Asphalt Overlays on Flexible Pavement a. Description. This special provision must be used in conjunction with 12SP-500A - Materials and Workmanship Pavement Warranty to construct to warranted pavement for multiple course Hot Mix Asphalt (HMA) overlays on rigid, flexible, and composite pavements using E10, E30, E50, and Gap Graded Superpave mixtures. b. Limits of Warranted Work. The warranted work includes all multiple course HMA overlays on driving lanes within the project limits unless otherwise indicated on the plans. c. Warranty Term. The warranty term will be 5 years from the date of Initial Acceptance otherwise termed the Acceptance Date of Construction. d. Warranty Bond. Supply a warranty bond equal to $400,000.00 or five percent of the total contract amount whichever is less. e. Initial Ride Quality Acceptance Criteria. Initial Ride Quality requirements are specified in the contract. f. Warranty Requirements. Table 1 lists the allowable threshold limit for each condition parameter within each segment and the maximum number of allowable segments within a driving lane for each condition parameter. If any of the warranty requirements are not met, as a result of a defect in materials and/or workmanship, corrective action (warranty work) is required. The defective segments for surface distress may or may not be contiguous to necessitate corrective action. The maximum allowable number of defective segments for each condition parameter applies to each driving lane in each travel direction. Each driving lane must be evaluated independent of adjacent driving lanes. Any pavement surface requiring removal/replacement to correct deficiencies, for any condition parameter, must be replaced full- width across the driving lane. g. Corrective Actions. Table 2 lists recommended corrective actions to outline typical acceptable treatments for the various condition parameters. The Department will accept the listed corrective action if the action addresses the cause of the condition parameter. The Contractor may use an alternative action subject to Department approval. Table 1: Warranty Requirements Condition Parameter Threshold Limits Per Segment(Length = 528 feet) Max. Defective Segments Per Driving Lane-Mile(a) Longitudinal Cracking/Open Joint(b) 10% of segment length 1 De-bonding 5% of segment length 1 Raveling 8% of segment length 1 Flushing 4% of segment length 1

Michigan DOT Warranty Information E-13 Condition Parameter Threshold Limits Per Segment (Length = 528 feet) Max. Defective Segments Per Driving Lane-Mile(a) Rutting (c) ave. rut depth = 3/8 inch(d) 1 (a) The maximum allowable number of defective segments per driving lane is determined by multiplying by the length of the specific driving lane in miles. (b) A crack in the new surface will be excluded if it is determined to be “reflective” from a similar underlying crack condition. (c) The rut depth threshold applies to each wheel pathindependently. (d) The pavement surface will be evaluated for the presence of rutting on each driving lane throughout the warranty period. The pavement surface will be measured beginning at the POB and every 132 feet thereafter to determine average rut depth to quantify rutting for a particularsegment. Rut measurements will be done using a straight rigid device that is a minimum of 7 feet long and of sufficient stiffness that it will not deflect from its own weight, or a wire under sufficient tension to prevent sag when extended 7 feet. Measurements will be taken by placing this “straightedge” across the pavement surface perpendicular to the direction of travel. The straightedge must contact the surface on at least two bearing points with one located on either side of the rut. The straightedge is properly located when sliding the straightedge along its axis does not change the location of the contact points. Rut depth is then measured at the point of greatest perpendicular distance from the bottom of the straightedge to the pavement surface. Table 2: Recommended Corrective Actions Condition Parameter Recommended Action Longitudinal Cracking/ Open Joint Cut and Seal De-bonding Mill and Resurface Raveling Mill and Resurface Flushing Mill and Resurface Rutting Microsurface or Mill and Resurface(a) (a) Recommended action is dependent on the depth of the rut susceptible material. Hot Mix Asphalt Pavement on Rubblized Concrete a. Description. This special provision must be used in conjunction with 12SP-500A to construct warranted pavement for Hot Mix Asphalt (HMA) pavement placed on a rubblized concrete base. b. Limits of Warranted Work. The warranted work includes all hot mix asphalt on driving lanes within the project limits unless otherwise indicated on the plans. c. Warranty Term. The warranty term will be 5 years from the date of Initial Acceptance otherwise termed the Acceptance Date of Construction. d. Warranty Bond. Supply a warranty bond equal to $800,000.00 or five percent of the total contract amount whichever is less. e. Initial Ride Quality Acceptance Criteria. Initial Ride Quality requirements are outlined in the contract. f. Warranty Requirements. Table 1 lists the allowable threshold limit for each condition parameter within each segment and the maximum number of allowable segments within a driving lane for each condition parameter. If any of the warranty requirements are not met, as a result of a defect in materials and/or workmanship, corrective action (warranty work) is required. The defective segments for surface distress may or may not be contiguous to necessitate corrective action. The maximum allowable number of defective segments for each condition parameter applies to each driving lane in each travel direction. Each driving lane must be evaluated independent of adjacent driving lanes. Any pavement surface requiring removal/replacement to correct deficiencies, for any condition parameter, must be replaced full- width across the driving lane. g. Corrective Actions. Table 2 lists recommended corrective actions to outline typical acceptable treatments for the various condition parameters. The Department will accept the listed corrective action if the action addresses the cause of the condition parameter. The Contractor may use an alternative action subject to Department approval.

E-14 Performance-Based Pavement Warranty Practices Table 1: Warranty Requirements Condition Parameter(a) Threshold Limits Per Segment(Length = 528 feet) Max. Defective Segments Per Driving Lane-Mile(b) Transverse Cracking 3 1 Longitudinal Cracking / Open Joint 10% of segment length 1 De-bonding 5% of segment length 1 Raveling 8% of segment length 1 Flushing 4% of segment length 1 Rutting(c) ave. rut depth = 3/8 inch(d) 1 (a) Any amount of Alligator and/or Block Cracking is an unacceptable condition, and will be removed and replaced as approved by the Engineer. (b) The maximum allowable number of defective segments per driving lane is determined by multiplying by the length of the specific driving lane inmiles. (c) The rut depth threshold applies to each wheel path independently. (d) The pavement surface will be evaluated for the presence of rutting on each driving lane throughout the warranty period. The pavement surface will be measured beginning at the POB and every 132 feet thereafter to determine average rut depth to quantify rutting for a particular segment. Rut measurements will be done using a straight rigid device that is a minimum of 7 feet long and of sufficient stiffness that it will not deflect from its own weight, or a wire under sufficient tension to prevent sag when extended 7 feet. Measurements will be taken by placing this “straightedge” across the pavement surface perpendicular to the direction of travel. The straightedge must contact the surface on at least two bearing points with one located on either side of the rut. The straightedge is properly located when sliding the straightedge along its axis does not change the location of the contact points. Rut depth is then measured at the point of greatest perpendicular distance from the bottom of the straightedge to the pavementsurface. Table 2: Recommended Corrective Actions Condition Parameter(a) Recommended Action Transverse Cracking Cut and Seal Longitudinal Cracking Cut and Seal De-bonding Mill and Resurface affected courses Raveling Mill and Resurface affected courses Flushing Mill and Resurface top course Rutting Microsurface or Mill and Resurface(b) (a) Any areas exhibiting Alligator or Block Cracking must be removed and replaced as directed by the Engineer. (b) Recommended action is dependent on the depth of the rut susceptible material. Hot Mixed Asphalt Placed on Crush and Shaped Base a. Description. This special provision must be used in conjunction with 12SP-500A - Materials and Workmanship Pavement Warranty to construct warranted pavement for hot mix asphalt (HMA) pavement placed on a crush and shaped base. b. Limits of Warranted Work. The warranted work includes all HMA on driving lanes within the project limits unless otherwise indicated on the plans. c. Warranty Term. The warranty term will be 5 years from the date of Initial Acceptance otherwise termed the Acceptance Date of Construction. d. Warranty Bond. Supply a warranty bond equal to $800,000.00 or five percent of the total contract amount, whichever is less. e. Initial Ride Quality Acceptance Criteria. Initial Ride Quality requirements are specified in the contract. f. Warranty Requirements. Table 1 lists the allowable threshold limit for each condition parameter within each segment and the maximum number of allowable segments within a driving lane for each condition parameter. If any of the warranty requirements are not met, as a result of a defect in materials and/or workmanship, corrective action (warranty work) is required.

Michigan DOT Warranty Information E-15 The defective segments for surface distress may or may not be contiguous to necessitate corrective action. The maximum allowable number of defective segments for each condition parameter applies to each driving lane in each travel direction. Ensure each driving lane is evaluated independent of adjacent driving lanes. Ensure any pavement surface requiring removal/replacement to correct deficiencies, for any condition parameter, is replaced full-width across the driving lane. g. Corrective Actions. Table 2 lists recommended corrective actions to provide typical acceptable treatments for the various condition parameters. The Department will accept the listed corrective action if the action addresses the cause of the condition parameter. The Contractor may use an alternative action subject to Department approval. Table 1: Warranty Requirements Condition Parameter(a) Threshold Limits Per Segment (Length = 1/10 mile) Max. Defective Segments Per Driving Lane-Mile(b) Transverse Cracking 4 1 Longitudinal Cracking/ Open Joint 10% of segment length 1 De-bonding 5% of segment length 1 Raveling 8% of segment length 1 Flushing 4% of segment length 1 Rutting(c) avg. rut depth = 3/8 inch(d) 1 (a) Alligator and/or Block Cracking will not be an acceptable condition, and will be removed and replaced as approved by the Engineer. (b) The maximum allowable number of defective segments per driving lane is determined by multiplying by the length of the specific driving lane in miles. (c) The rut depth threshold applies to each wheel path independently. (d) The pavement surface will be evaluated for the presence of rutting on each driving lane throughout the warranty period. The pavement surface will be measured beginning at the POB and every 132 feet thereafter to determine average rut depth to quantify rutting for a particular 1/10 mile segment. Rut measurements will be done using a straight rigid device that is a minimum of 7 feet long and of sufficient stiffness that it will not deflect from its own weight, or a wire under sufficient tension to prevent sag when extended 7 feet. Measurements will be taken by placing this “straightedge” across the pavement surface perpendicular to the direction of travel. The straightedge must contact the surface on at least two bearing points with one located on either side of the rut. The straightedge is properly located when sliding the straightedge along its axis does not change the location of the contact points. Rut depth is then measured at the point of greatest perpendicular distance from the bottom of the straightedge to the pavement surface. Table 2: Recommended Corrective Actions Condition Parameter(a) Recommended Action Transverse Cracking Cut and Seal Longitudinal Cracking/Open Joint Cut and Seal De-bonding Mill and Resurface affected courses Raveling Mill and Resurface affected courses Flushing Mill and Resurface top course Rutting Microsurface or Mill and Resurface(b) (a) Any areas exhibiting Alligator or Block Cracking must be removed and replaced as directed by the Engineer. (b) Recommended action is dependent on the depth of the rut susceptible material. Cold Milling and One Course Hot Mix Asphalt Overlay (CPM) a. Description. This special provision must be used in conjunction with 12SP-500A - Materials and Workmanship Pavement Warranty to construct warranted pavement for cold mill and 1½ inch or 2 inch capital preventive maintenance hot mix asphalt (HMA) overlays. b. Limits of Warranted Work. The warranted work includes all HMA on warranty lanes within the project limits unless otherwise indicated on the plans.

E-16 Performance-Based Pavement Warranty Practices c. Warranty Term. The warranty term will be 3 years from the date of Initial Acceptance otherwise termed the Acceptance Date of Warranted Work. d. Warranty Bond. The bond will equal 100 percent of the contract cost for the warranted work. e. Warranty Requirements. Table 1 lists the allowable threshold limit for each condition parameter within each segment and the maximum number of allowable segments within a warranty lane for each condition parameter. If the threshold is exceeded for a condition parameter, for more than the maximum number of allowable segments, corrective action (warranty work) is required. The defective segments for surface distress may or may not be contiguous to necessitate corrective action. The maximum allowable number of defective segments for each condition parameter applies to each warranty lane in each travel direction. Ensure each warranty lane is evaluated independent of adjacent warranty lanes. Ensure any pavement surface requiring removal/replacement to correct deficiencies, for any condition parameter, is replaced full-width across the warranty lane. f. Corrective Actions. The Contractor will propose corrective action subject to Department approval. The Department will accept the proposed corrective action if the action will correctly restore both the original preventive maintenance treatment and the benefit that the treatment provides to the underlying pavement structure. Table 1: Warranty Requirements Condition Parameter Threshold Limits Per Segment (Length = 528 feet) Max. Defective Segments(a) Longitudinal Cracking/ Open Joint(b) 25% of segment length 1 De-bonding 25% of segment length 1 Raveling 20% of segment length 1 Flushing 5% of segment length 1 Rutting(c) average rut depth = 1/4 inch(d) 1 (a) The maximum allowable number of defective segments per warranty lane is determined by multiplying by the length of the specific warranty lane in miles. (b) A crack in the new surface will be excluded if it is determined to be “reflective” from a similar underlying crack condition. (c) The rut depth threshold applies to each wheel path independently. (d) The pavement surface will be evaluated for the presence of rutting on each warranty lane throughout the warranty period. The pavement surface will be measured beginning at the POB and every 132 feet thereafter to determine average rut depth to quantify rutting for a particular segment. Rut measurements will be done using a straight rigid device that is a minimum of 7 feet long and of sufficient stiffness that it will not deflect from its own weight, or a wire under sufficient tension to prevent sag when extended 7 feet. Measurements will be taken by placing this “straightedge” across the pavement surface perpendicular to the direction of travel. The straightedge must contact the surface on at least two bearing points with one located on either side of the rut. The straightedge is properly located when sliding the straightedge along its axis does not change the location of the contact points. Rut depth is then measured at the point of greatest perpendicular distance from the bottom of the straightedge to the pavement surface. One Course Hot Mix Asphalt Overlay (CPM) a. Description. This special provision must be used in conjunction with 12SP-500A to construct warranted pavement using 1½inch or 2 inch preventive maintenance hot mix asphalt (HMA) overlays. b. Limits of Warranted Work. The warranted work includes all HMA on warranty lanes within the project limits unless otherwise indicated on the plans. c. Warranty Term. The warranty term will be 3 years from the date of Initial Acceptance otherwise termed the Acceptance Date of Warranted Work. d. Warranty Bond. The bond will equal 100 percent of the contract cost for the warranted work. e. Warranty Requirements. Table 1 lists the allowable threshold limit for each condition parameter within each segment and the maximum number of allowable segments within a warranty lane for each condition parameter. If the threshold is exceeded for a condition parameter, for more than the maximum number of allowable segments, corrective action (warranty work) is required.

Michigan DOT Warranty Information E-17 The defective segments for surface distress may or may not be contiguous to necessitate corrective action. The maximum allowable number of defective segments for each condition parameter applies to each warranty lane in each travel direction. Ensure each warranty lane is evaluated independent of adjacent warranty lanes. Ensure any pavement surface requiring removal/replacement to correct deficiencies, for any condition parameter, is replaced full-width across the warranty lane. f. Corrective Actions. The Contractor will propose corrective action subject to Department approval. The Department will accept the proposed corrective action if the action will correctly restore both the original preventive maintenance treatment and the benefit that the treatment provides to the underlying pavement structure. Table 1: Warranty Requirements Condition Parameter Threshold Limits Per Segment (Length = 528 feet) Max. Defective Segments(a) Longitudinal Cracking/Open Joint(b) 25% of segment length 4 De-bonding 25% of segment length 2 Raveling 20% of segment length 4 Flushing 5% of segment length 2 Rutting(c) average rut depth = 1/4 inch(d) 1 (a) The maximum allowable number of defective segments per warranty lane is determined by multiplying by the length of the specific warranty lane in miles. (b) A crack in the new surface will be excluded if it is determined to be “reflective” from a similar underlying crack condition. (c) The rut depth threshold applies to each wheel path independently. (d) The pavement surface will be evaluated for the presence of rutting on each warranty lane throughout the warranty period. The pavement surface will be measured beginning at the POB and every 132 feet thereafter to determine average rut depth to quantify rutting for a particular segment. Rut measurements will be done using a straight rigid device that is a minimum of 7 feet long and of sufficient stiffness that it will not deflect from its own weight, or a wire under sufficient tension to prevent sag when extended 7 feet. Measurements will betaken by placing this “straightedge” across the pavement surface perpendicular to the direction of travel. The straightedge shall contact the surface on at least two bearing points with one located on either side of the rut. The straightedge is properly located when sliding the straightedge along its axis does not change the location of the contact points. Rut depth is then measured at the point of greatest perpendicular distance from the bottom of the straightedge to the pavement surface. Hot Mix Asphalt Crack Treatment (CPM) a. Description. This special provision must be used in conjunction with 12SP-500B to perform warranted, hot mix asphalt (HMA) surface crack treatment. The work consists of furnishing all labor, equipment, and materials necessary to treat cracks in HMA surfaces using the following operations. 1. Saw/Rout and Seal. This operation consists of sawing or routing a reservoir at the crack of an existing HMA surface, cleaning the sawn surface, and placing sealant into the reservoir to prevent the intrusion of water into the pavement structure. 2. Overband. This operation consists of cleaning the crack in an existing HMA surface and placing material into and over the crack to eliminate water infiltration. b. Limits of Warranted Work. The warranted work includes all HMA crack treatment applications on driving lanes and shoulders within the project limits unless otherwise indicated on the proposal. c. Warranty Period. The length of warranty will be 2 years from the Acceptance Date of Warranted Work. d. Amount of Warranty Bond. Supply a warranty bond equal to 100 percent of the warranted work for HMA crack treatment. e. Materials. Provide materials in accordance with subsection 502.02, of the Standard Specifications for Construction with the following modification: 1. Delete subsection 502.02.B.1 of the Standard Specifications for Construction. f. Construction. Ensure construction is in accordance with subsection 502.03, of the Standard Specifications for Construction with the following modifications: 1. Delete the second sentence of the second paragraph of subsection 502.03.D.2 of the Standard Specifications for Construction and replace with the following: “Apply overband 4 inches wide, ±1/4 inch and from 1/8 inch to 3/16 inch thick.”

E-18 Performance-Based Pavement Warranty Practices 2. Add the following to the end of subsection 502.03.D.2.b. of the Standard Specifications for Construction: “Allow to cure for a minimum of 3 days prior to placement ofmicro-surface.” 3. Add the following to the end of subsection 502.03.D.2.c of the Standard Specifications for Construction: “Allow to cure for a minimum of 7 days prior to placement of chip seal.” 4. Add the following to the end of subsection 502.03.D.2.d of the Standard Specifications for Construction: “Allow to cure for a minimum of 14 days prior to placement of Paver Placed Surface seal.” 5. Add the following to the end of subsection 502.03.D.2.e of the Standard Specifications for Construction: “Allow to cure for a minimum of 14 days prior to placement of HMA Ultra- thin Overlay.” 6. Initial Acceptance. At the construction completion of the HMA Crack Treatment, or a portion as determined by the Department, the Department and Contractor will review the crack treatment for compliance with the contract and the project specifications. If the crack treatment is determined by the Department to not be in compliance, then the Contractor must repair and make good at its own expense any and all defects. The Department and the Contractor will document and execute the initial acceptance on a form furnished by the Department when the crack treatment is determined by the Department to be in compliance. This date is then the Acceptance Date of Warranted Work. A copy of initial acceptance will be sent to the Contractor’s Warranty Bond surety agent by the Department. The Department may accept the HMA Crack Treatment and begin the warranty period, excluding any area needing corrective work, due to seasonal limitations. g. Measurement and Payment. Delete subsection 502.04 of the Standard Specifications for Construction in its entirety and replace it with the following: The completed work, as described, will be measured and paid for at the contract unit price using the following pay items: Pay Item Pay Unit HMA Crack Treatment, Lane, Warranty............................................................. Lane Mile HMA Crack Treatment, Ramp, Warranty ........................................................... Lane Mile HMA Crack Treatment, Lane, Warranty includes all materials, equipment, labor for preparing, filling and sealing the cracks and complying with all requirements including the warranty, for full coverage as specified on the plans. HMA Crack Treatment, Lane, Warranty will be measured along the centerline of each lane and will include the traffic lane, as defined in the Lane Mile Inventory and any adjacent paved shoulders. HMA Crack Treatment, Ramp, Warranty includes all materials, equipment, labor for preparing, filling and sealing the cracks and complying with all requirements including the warranty, for full coverage as specified on the plans. HMA Crack Treatment, Ramp, Warranty will be measured along the ramp centerline beginning at the 2 foot gore point including shoulders h. Warranty Requirements. If any of the following minimum performance criteria are not met, warranty work is required. The warranty work must be performed prior to conclusion of the warranty period or within such other time frame as agreed to by the Department and the Contractor, unless safety concerns dictate otherwise. One segment (528 feet in length) per one lane mile will be selected to review in detail. One lane will be reviewed for measuring the performance of the crack treatment. One segment will be reviewed for any projects or remaining portions of a project less than 1 mile, but greater than 2 segments (1056 feet). A separate measurement and calculation of treatment failure will be made for material placed in a saw and seal configuration and material placed in an overband configuration. The measurement will define the amount of failure as a percentage of the total length of cracks in the segment by the following formula: 1. Single Segment Failure. The allowable threshold limit for material failure must not exceed 30 percent of any one segment. Corrective action for this parameter requires the Contractor to reseal the entire deficient segment plus all other deficient segments that exceed 30 percent failure within that mile, including shoulders unless the shoulders, or portions thereof, were exempted in the proposal from treatment due to a high concentration of cracks.

Michigan DOT Warranty Information E-19 2. Multiple Segment Failure. The allowable threshold limit for material failure must not exceed 10 percent of all segments evaluated. Corrective action for this parameter requires the Contractor to reseal the entire project location, including shoulders unless the shoulders, or portions thereof, were exempted in the proposal from treatment due to a high concentration of cracks. 3. Catastrophic Failure. If at any time during the warranty period, 30 percent of the cracks treated as part of this contract fail, the Contractor will correct all failures as soon as weather conditions permit. One Course Hot Mix Asphalt Overlay (CPM) a. Description. This special provision must be used in conjunction with 12SP-500A to construct warranted pavement using 1½inch or 2 inch preventive maintenance hot mix asphalt (HMA) overlays. b. Limits of Warranted Work. The warranted work includes all HMA on warranty lanes within the project limits unless otherwise indicated on the plans. c. Warranty Term. The warranty term will be 3 years from the date of Initial Acceptance otherwise termed the Acceptance Date of Warranted Work. d. Warranty Bond. The bond will equal 100 percent of the contract cost for the warranted work. e. Warranty Requirements. Table 1 lists the allowable threshold limit for each condition parameter within each segment and the maximum number of allowable segments within a warranty lane for each condition parameter. If the threshold is exceeded for a condition parameter, for more than the maximum number of allowable segments, corrective action (warranty work) is required. The defective segments for surface distress may or may not be contiguous to necessitate corrective action. The maximum allowable number of defective segments for each condition parameter applies to each warranty lane in each travel direction. Ensure each warranty lane is evaluated independent of adjacent warranty lanes. Ensure any pavement surface requiring removal/replacement to correct deficiencies, for any condition parameter, is replaced full-width across the warranty lane. f. Corrective Actions. The Contractor will propose corrective action subject to Department approval. The Department will accept the proposed corrective action if the action will correctly restore both the original preventive maintenance treatment and the benefit that the treatment provides to the underlying pavement structure. Table 1: Warranty Requirements Condition Parameter Threshold Limits Per Segment (Length = 528 feet) Max. Defective Segments(a) Longitudinal Cracking/Open Joint(b) 25% of segment length 4 De-bonding 25% of segment length 2 Raveling 20% of segment length 4 Flushing 5% of segment length 2 Rutting(c) average rut depth = 1/4 inch(d) 1 (a) The maximum allowable number of defective segments per warranty lane is determined by multiplying by the length of the specific warranty lane in miles. (b) A crack in the new surface will be excluded if it is determined to be “reflective” from a similar underlying crack condition. (c) The rut depth threshold applies to each wheel path independently. (d) The pavement surface will be evaluated for the presence of rutting on each warranty lane throughout the warranty period. The pavement surface will be measured beginning at the POB and every 132 feet thereafter to determine average rut depth to quantify rutting for a particular segment. Rut measurements will be done using a straight rigid device that is a minimum of 7 feet long and of sufficient stiffness that it will not deflect from its own weight, or a wire under sufficient tension to prevent sag when extended 7 feet. Measurements will be taken by placing this “straightedge” across the pavement surface perpendicular to the direction of travel. The straightedge shall contact the surface on at least two bearing points with one located on either side of the rut. The straightedge is properly located when sliding the straightedge along its axis does not change the location of the contact points. Rut depth is then measured at the point of greatest perpendicular distance from the bottom of the straightedge to the pavement surface.

E-20 Performance-Based Pavement Warranty Practices Hot Mix Asphalt Crack Treatment (CPM) a. Description. This special provision must be used in conjunction with 12SP-500B to perform warranted, hot mix asphalt (HMA) surface crack treatment. The work consists of furnishing all labor, equipment, and materials necessary to treat cracks in HMA surfaces using the following operations. 1. Saw/Rout and Seal. This operation consists of sawing or routing a reservoir at the crack of an existing HMA surface, cleaning the sawn surface, and placing sealant into the reservoir to prevent the intrusion of water into the pavement structure. 2. Overband. This operation consists of cleaning the crack in an existing HMA surface and placing material into and over the crack to eliminate water infiltration. b. Limits of Warranted Work. The warranted work includes all HMA crack treatment applications on driving lanes and shoulders within the project limits unless otherwise indicated on the proposal. c. Warranty Period. The length of warranty will be 2 years from the Acceptance Date of Warranted Work. d. Amount of Warranty Bond. Supply a warranty bond equal to 100 percent of the warranted work for HMA crack treatment. e. Materials. Provide materials in accordance with subsection 502.02, of the Standard Specifications for Construction with the following modification: 1. Delete subsection 502.02.B.1 of the Standard Specifications for Construction. f. Construction. Ensure construction is in accordance with subsection 502.03, of the Standard Specifications for Construction with the following modifications: 1. Delete the second sentence of the second paragraph of subsection 502.03.D.2 of the Standard Specifications for Construction and replace with the following: “Apply overband 4 inches wide, ±1/4 inch and from 1/8 inch to 3/16 inch thick.” 2. Add the following to the end of subsection 502.03.D.2.b. of the Standard Specifications for Construction: “Allow to cure for a minimum of 3 days prior to placement of micro- surface.” 3. Add the following to the end of subsection 502.03.D.2.c of the Standard Specifications for Construction: “Allow to cure for a minimum of 7 days prior to placement of chip seal.” 4. Add the following to the end of subsection 502.03.D.2.d of the Standard Specifications for Construction: “Allow to cure for a minimum of 14 days prior to placement of Paver Placed Surface seal.” 5. Add the following to the end of subsection 502.03.D.2.e of the Standard Specifications for Construction: “Allow to cure for a minimum of 14 days prior to placement of HMA Ultra-thin Overlay.” 6. Initial Acceptance. At the construction completion of the HMA Crack Treatment, or a portion as determined by the Department, the Department and Contractor will review the crack treatment for compliance with the contract and the project specifications. If the crack treatment is determined by the Department to not be in compliance, then the Contractor must repair and make good at its own expense any and all defects. The Department and the Contractor will document and execute the initial acceptance on a form furnished by the Department when the crack treatment is determined by the Department to be in compliance. This date is then the Acceptance Date of Warranted Work. A copy of initial acceptance will be sent to the Contractor’s Warranty Bond surety agent by the Department. The Department may accept the HMA Crack Treatment and begin the warranty period, excluding any area needing corrective work, due to seasonal limitations. g. Measurement and Payment. Delete subsection 502.04 of the Standard Specifications for Construction in its entirety and replace it with the following: The completed work, as described, will be measured and paid for at the contract unit price using the following pay items: Pay Item Pay Unit HMA Crack Treatment, Lane, Warranty............................................................. Lane Mile HMA Crack Treatment, Ramp, Warranty ........................................................... Lane Mile

Michigan DOT Warranty Information E-21 HMA Crack Treatment, Lane, Warranty includes all materials, equipment, labor for preparing, filling and sealing the cracks and complying with all requirements including the warranty, for full coverage as specified on the plans. HMA Crack Treatment, Lane, Warranty will be measured along the centerline of each lane and will include the traffic lane, as defined in the Lane Mile Inventory and any adjacent paved shoulders. HMA Crack Treatment, Ramp, Warranty includes all materials, equipment, labor for preparing, filling and sealing the cracks and complying with all requirements including the warranty, for full coverage as specified on the plans. HMA Crack Treatment, Ramp, Warranty will be measured along the ramp centerline beginning at the 2 foot gore point including shoulders. h. Warranty Requirements. If any of the following minimum performance criteria are not met, warranty work is required. The warranty work must be performed prior to conclusion of the warranty period or within such other time frame as agreed to by the Department and the Contractor, unless safety concerns dictate otherwise. One segment (528 feet in length) per one lane mile will be selected to review in detail. One lane will be reviewed for measuring the performance of the crack treatment. One segment will be reviewed for any projects or remaining portions of a project less than 1 mile, but greater than 2 segments (1056 feet). A separate measurement and calculation of treatment failure will be made for material placed in a saw and seal configuration and material placed in an overband configuration. The measurement will define the amount of failure as a percentage of the total length of cracks in the segment by the following formula: 1. Single Segment Failure. The allowable threshold limit for material failure must not exceed 30 percent of any one segment. Corrective action for this parameter requires the Contractor to reseal the entire deficient segment plus all other deficient segments that exceed 30 percent failure within that mile, including shoulders unless the shoulders, or portions thereof, were exempted in the proposal from treatment due to a high concentration of cracks. 2. Multiple Segment Failure. The allowable threshold limit for material failure must not exceed 10 percent of all segments evaluated. Corrective action for this parameter requires the Contractor to reseal the entire project location, including shoulders unless the shoulders, or portions thereof, were exempted in the proposal from treatment due to a high concentration of cracks. 3. Catastrophic Failure. If at anytimeduring the warranty period, 30 percent of the cracks treated as part of this contract fail, the Contractor will correct all failures as soon as weather conditions permit. Paver Placed Surface Seal (CPM) a. Description. This special provision must be used in conjunction with 12SP-500B to construct warranted Paver Placed Surface Seals. The work consists of furnishing all labor, equipment, and materials necessary to place a warm polymer modified asphalt emulsion followed by a hot mix asphalt (HMA) thin overlay. b. Limits of Warranted Work. The warranted work includes all Paver Placed Surface Seal applications on driving lanes and shoulders within the project limits unless otherwise indicated in the proposal or excluded as specified in section h.1. c. Warranty Period. The length of warranty will be 3 years from the Acceptance Date of Warranted Work. d. Amount of Warranty Bond. Supply a warranty bond equal to 100 percent of the warranted work for Paver Placed Surface Seal. e. Materials. 1. Aggregate Physical Properties. The physical properties of the aggregate must comply with the values shown in Table 1 and Table 2. 2. Performance Graded (PG) Asphalt Binder. Binders must meet all the requirements of the Special Provision for Price Adjustment on Performance Grade Asphalt Binders, Table 1, and the Selection criteria listed in Table 3. 3. Asphalt Emulsion. The polymer modified asphalt emulsion used must meet the requirements listed in Table 4.

E-22 Performance-Based Pavement Warranty Practices 4. HMA Mixture Design. Submit a completed mix design from an MDOT approved laboratory to the Engineer, 5 working days prior to the start of construction. All material sources used for the mix design will be identified. The mixture will be designed so that the asphalt binder produces a minimum film thickness of 9 microns. The film thickness will be computed consistent with the method defined in Hot Mix Asphalt Materials, Mixture Design and Construction, Second Edition, National Center for Asphalt Technology. The designed mixture must meet all requirements of Table 5 and minimum film thickness. Test results verifying that the mix meets the requirements in Table 5 and film thickness will be presented to MDOT as part of the completed mix design. Reclaimed Material will not be allowed in the mixture. Table 1: Physical Requirements for Coarse Aggregate Test Method Specifications L.A. Abrasion Resistance: MTM-102 35% max loss Aggregate Wear Index (AWI) MTM-111 260 min Percentage of Crushed Particles, Two Faced MTM-117 90% min Deleterious Particles in Aggregate MTM-110(a) 5.0% max Flat and Elongated Ratio, 3:1 ASTM D 4791(b) 25% max Water Absorption ASTM C 127 <3.0% max Micro-Deval, % loss AASHTO T 327-06 18 max (a) Includes the sum of shale, siltstone, structurally weak and clay-ironstone. (b) As determined in accordance with ASTM D 4791 for material retained on the No. #4 sieve. The ratio between length to width or length to thickness or any combination shall not be greater than 3:1 for not be more than 25 percent of the material. Table 2: Physical Requirements for Fine Aggregate Test Method Specifications Sand Equivalent ASTM D 2419 45% min. Uncompacted Void Content ASTM C 1252 40% min. Table 3: Performance Graded Asphalt Binder Location PG Asphalt Binder North of M-72 in lower peninsula and the upper peninsula PG 64-28P South of M-72 (including M-72) PG 70-28P Metro Region only PG 70-22P Table 4: Polymer Modified Asphalt Emulsion Test on Residue from Distillation Method Min. Max. Viscosity @ 25 °C, SFS ASTM D 88 20 100 Sieve Test, % ASTM D 244 0.05 24-Hour Storage Stability, % Diff.(a) ASTM D 244 1 Residue from Distillation @ 204°C, %(b) ASTM D 244 63 Oil Distillate, ml ASTM D 244 2 Demulsibility 35 ml, 0.02 N CaCl 2 or 50 ml 0.8% DSS ASTM D 244 60 Elastic Recovery, % AASHTO T 301 60 Penetration @ 25°C, 100 g, 5 sec. dmm ASTM D 5 80 150 a. After standing undisturbed for 24 hours, the surface shall show no white, milky colored substance, but shall be a smooth homogenous color throughout. Any visible amount of white, milky colored substance is basis for non-acceptance. b. ASTM D 244 with modifications to include a 400 degree F ± 10 degree maximum temperature to be held for a period of 15 minutes.

Michigan DOT Warranty Information E-23 Table 5: Mixture Requirements Sieve Size Type B Mix % Passing Indicated Sieve Type C Mix % Passing Indicated Sieve 3/4 inch 100 1/2 inch 100 85-100 3/8 inch 85-100 55-80 No. 4 22-38 22-38 No. 8 19-32 19-32 No. 16 15-24 15-24 No. 30 11-18 11-18 No. 50 8-14 8-14 No. 100 5-10 5-10 No. 200 4-7 4-7 Asphalt Binder Content, % 4.8-6.2 4.6-6.2 Draindown Test AASHTO T305(a) 0.10% max. 0.10% max. Moisture Sensitivity, AASHTO T 283(b) 80% min. 80% min. (a) Conduct the draindown test at the JMF asphalt content plus .5%. Test the draindown at the mixing temperature plus 27 degrees F but do not exceed 350 degreesF. (b) Specimens for T-283 testing are to be compacted by using the Superpave Gyratory Compactor (SGC) at 100 gyrations with target dimensions of either 150 mm diameter x 95 mm (±3mm) height or 100 mm diameter x 63 mm (±3mm) height. No adjustment is made to the number of revolutions to target an air void range. Cure the loose bituminous surface course mix 1 hour at the specified application temperature. Minimum time for vacuum saturation: 20 minutes. Specimens subject to freeze-thaw conditioning. If an anti-stripping agent is needed, amount and type must be reported with the mix design. A. Mix Design Documentation. (1) MDOT Form 1820 - Contractor Bituminous Mix Design Communication (2) MDOT Form 1923 - Sample Identification (3) Average max. percent draindown for each test temperature (Report) (4) Moisture sensitivity for specimen tests (Report) (5) Computation of film thickness (Report) f. Construction. 1. Equipment. A. Self-Priming Machine. The self-priming machine must spray a polymer modified emulsion membrane and place a HMA surface course over the membrane in a single pass continuous application. No part of the self-priming machine is to come in contact with the polymer modified emulsion membrane before the HMA surface course is applied. The self-priming machine must have: (1) A receiving hopper with at least two heated - twin screw, mix feed augers. (2) An integral storage tank for the polymer modified asphalt emulsion. (3) Twin expandable emulsion spray bars located immediately in front of the HMA feed augers and ironing screed. The spray bars must be metered to accurately apply the polymer modified asphalt emulsion and monitor the rate of spray across the entire width of the paving pass. (4) A variable width vibratory heated ironing screed. Ensure the screed is adjustable and capable of providing both positive and negative crowns to the desired thickness and cross section. B. Compacting Equipment. Use at least two steel wheel roller each weighing a minimum of 10 tons. The rollers must meet subsection 501.03.A.5 of the Standard Specifications for Construction.

E-24 Performance-Based Pavement Warranty Practices A. Review of a work schedule. B. Examine traffic control plan. C. Review equipment calibrations and adjustments. D. Inspect condition of equipment for safety criteria. E. Discussion of the quality control plan. F. Designation of Contractor’s authorized representative. 3. Weather/Seasonal Limitations. Ensure the Paver Placed Surface Seal is placed on dry pavement. Placement is not permitted if the air temperature is below 50 degrees Fahrenheit (F) at thetime of placement. Seasonal limitations for placing Paver Placed Surface Seal will be from May 1 to October 15. 4. General Placement. A. Emulsion Membrane. The target application rate for the polymer modified asphalt emulsion membrane is 0.20 gallons per square yard. A field adjustment of the emulsion application rate is allowed for changes in existing pavement surface conditions or limitation of the HMA Mixture Design. B. HMA Surface Course. The target application rate is 73 pounds per square yard for Type B surface course mixture and 83 pounds per square yard for Type C surface course mixture. In no case will the application rate be thin enough to fracture aggregate by the screed. 5. Quality Control. Take the following measures to maintain quality control and uniformity. If a condition is identified below that causes an unsatisfactory Paver Placed Surface Seal, all production work must stop and corrective action must immediately be taken. A. Placing HMA Surface Course. The application rate of the HMA surface course is determined by three yield checks daily. The yield must not exceed a tolerance of ±5 pounds per square yard from the target application rate. B. HMA Mixture. A sample of the HMA mixture will be taken from the truck transports according to ASTM D 979 and reduce them in size according to MTM 313. One daily sample will be taken and tested prior to the following day’s production. The test results must fall within the tolerances listed in Table 6. Table 6: Quality Control Tolerances Sieve Size Type B Mix Tolerance, % (a) Type C Mix Tolerance, % (a) 3/4 inch 1/2 inch ±5 3/8 inch ±5 ±5 #4 ±5 ±5 #8 ±4 ±4 #200 ±1 ±1 PG Asphalt Binder Content, % ±0.4 Film Thickness 9 microns (Min.) (a) Tolerance in reference to values listed in Table 5. C. Material Temperature. Apply the polymer modified asphalt emulsion membrane at a temperature of 140 to 175 degrees F. Apply the HMA mixture at a temperature of 300 to 330 degrees F and compaction will be completed before the mat has cooled to 185 degrees F. D. Rough Joints. Transverse or longitudinal construction joints created from a Paver Placed Surface Seal operation that causes a bump or poor riding joint, in the opinion of the Engineer, is unsatisfactory and must be repaired by a mutually agreed upon method. 6. Initial Acceptance. At the construction completion of the Paver Placed Surface Seal, or a portion as determined by the Department, the Department and Contractor will review the Paver Placed Surface Seal for compliance with the project specifications. If the Department determines that the Paver Placed Surface 2. Pre-Paving Meeting. A pre-paving meeting between the Engineer and Contractor will be held on-site prior to beginning work. The agenda for this meeting includes:

Michigan DOT Warranty Information E-25 Seal is not in compliance, then the Contractor must repair and make good at its own expense any and all defects. The Department and the Contractor must document and execute the initial acceptance on a form furnished by the Department when the Paver Placed Surface Seal is determined by the Department to be in compliance. A copy of initial acceptance will be sent to the Contractor’s Warranty Bond surety agent by the Department. g. Measurement and Payment. The completed work, as described, will be measured and paid for at the contract unit price using the following pay items: Pay Item Pay Unit Paver Placed Surface Seal, Type B, Warranty ...............................................Square Yard Paver Placed Surface Seal, Type C, Warranty ...............................................Square Yard Paver Placed Surface Seal, Type B, Warranty and Paver Placed Surface Seal, Type C, Warranty includes all materials, equipment, labor for preparing the surface, placing temporary pavement markings, placing the Paver Placed Surface Seal mixture and complying with all requirements including the warranty. The placement includes placement of a membrane and HMA surface course of mixture for full width coverage as specified in the contract documents. h. Warranty Requirements. If any of the following performance thresholds are exceeded, warranty work is required. The warranty work must be performed prior to conclusion of the warranty period or within such other time frame as agreed to by the Department and the Contractor, unless safety concerns dictate otherwise. Maximum Deficient Segments per Warranty Lane 4 Segments - A combination of one or more surface deficiencies exceeding the allowable threshold limit for rutting, raveling, bleeding/flushing, and debonding. 1 Segment - Rutting exceeding the allowable threshold limit. 1 Segment - Any single surface deficiency for raveling, bleeding/flushing, and debonding, exceeding 10 percent of the segment length. Threshold Limits and Corrective Action 1. Rutting. A single measure of rut depth must not exceed 1/4 inch for any 528 feet (0.1 mile) segment during the first 120 days after initial project acceptance. During the entire warranty period rut depths that average in excess of 3/8 inch are deficient. The average rut depth is defined by 5 measurements at approximately 100 foot intervals in the segment as determined by the Engineer. Pavement segments where the original pavement rut depth exceeds 1/2 inch are excluded from the warranty for rutting threshold level. The Contractor will define locations where rutting exceeds 1/2 inch and provide the information to the Engineer. Work must not begin until the Engineer has verified and accepted the Contractor’s list of rutting exceptions. Any subsequent rutting caused from movement of the underlying pavement layers is excluded from the warranty. Corrective action is required for any one segment deficiency. Correction of this parameter requires the Contractor to reapply a Paver Placed Surface Seal treatment on the deficient portion of the segment. The Engineer may accept alternative corrective measures, based on unique conditions. The measurement will be done using a straight rigid device that is a minimum of 7 feet long and of sufficient stiffness that it will not deflect from its own weight, or a wire under sufficient tension to prevent sag when extended 7 feet. Measurements will be taken by placing this straightedge across the pavement surface perpendicular to the direction of travel. The straightedge must contact the surface on at least two bearing points with one located on either side of the rut. The straightedge is properly located when sliding the straightedge along its axis does not change the location of the contact points. Rut depth is then measured at the point of greatest perpendicular distance from the bottom of the straightedge to the pavement surface. 2. Raveling. The threshold limit for raveling is 8 percent of the segment length. Corrective action for this parameter requires the Contractor to reapply Paver Placed Surface Seal (full- width) to the deficient portion of the segment, including shoulders if part of the Paver Placed Surface Seal

E-26 Performance-Based Pavement Warranty Practices work. The Engineer may accept alternative corrective measures, based on unique conditions. The corrective action must be placed on the full lane width. 3. Bleeding/Flushing. The threshold limit for bleeding or flushing is 5 percent of the segment length. Corrective action for this parameter requires the Contractor to either reapply Paver Placed Surface Seal (full-width), diamond grind, or remove and replace (full-width) the Paver Placed Surface Seal treatment on the deficient portion of the segment, including shoulders if part of the Paver Placed Surface Seal work. The Engineer may accept alternative corrective measures, based on unique conditions. 4. Debonding. The threshold limit for debonding is 5 percent of the segment length. Corrective action for this parameter requires the Contractor to either reapply Paver Placed Surface Seal (full-width) or remove and replace the Paver Placed Surface Seal (full-width) on the deficient portion of the segment, including shoulders if part of the Paver Placed Surface Seal work. The Engineer may accept alternative corrective measures, based on unique conditions. The corrective action must be placed on the full lane width. Micro-Surfacing (CPM) a. Description. This special provision must be used in conjunction with 12SP-500B to construct warranted single course micro-surfacing or multiple course micro-surfacing. Section 504 of the Standard Specifications for Construction remains in effect except as noted in this special provision. b. Limitsof WarrantedWork. The warranted work includes all micro-surfacing applications on driving lanes within the project limits unless otherwise indicated on the proposal. c. Warranty Period. The length of warranty will be 2 years from the Acceptance Date of Warranted Work. d. Amount of Warranty Bond. Supply a warranty bond equal to 100 percent of the warranted work for micro- surfacing. e. Materials. Add the following to subsection 504.02.A of the Standard Specifications for Construction. Aggregate used for micro-surfacing must be screened at the project site to ensure aggregate being introduced into the micro-surface mixture is not larger than the top size aggregate allowed in the mix design. The aggregate must be screened directly into the material transport units or micro-surface machine(s). The aggregate screening unit must be capable of producing adequate tonnage to maintain project production in accordance with subsection 504.03. f. Construction. Ensure all construction is in accordance with subsection 504.03 of the Standard Specifications for Construction with the following exception: Delete subsection 504.03.I.2 of the Standard Specifications for Construction. g. Measurement and Payment. Delete subsection 504.04 of the Standard Specifications for Construction and replace with the following: The completed work, as described, will be measured and paid for at the contract unit price using the following pay items: Pay Item Pay Unit Micro-Surface, Warranty................................................................................Square Yard Micro-Surface, Single Cse, Warranty.............................................................Square Yard Micro-Surface, Warranty includes all materials, equipment, and labor for preparing the surface (excluding removal of pavement markings which will be paid for separately), placing temporary pavement markings, placing the micro-surfacing mixture and complying with all requirements including the warranty. The placement includes application of a rut filling and/or leveling course and/or a surface course for full width coverage as specified in the contract. 1. Micro Surface, Single Cse, Warranty includes all materials, equipment, labor for preparing the surface (excluding removal of pavement markings which will be paid for separately), placing temporary pavement markings, placing the micro-surfacing mixture and complying with all requirements including the warranty. The placement includes application of a single course of mixture for full width coverage as specified in the contract.

Michigan DOT Warranty Information E-27 h. Warranty Requirements. The following lists the allowable threshold limit for each condition parameter within each segment and the maximum number of allowable segments within a driving lane during the warranty period. If the threshold is exceeded for a condition parameter, for more than the maximum number of allowable segments, warranty work is required. The deficient segments for surface distress may or may not be contiguous to necessitate corrective action. The maximum allowable number of deficient segments for each condition parameter applies to each driving lane in each travel direction. Each driving lane must be evaluated independent of adjacent driving lanes. Any pavement surface requiring removal/replacement to correct deficiencies, for any condition parameter, must be replaced full-width across the driving lane. The warranty work must be performed prior to conclusion of the warranty period or within such other time frame as agreed to by the Department and the Contractor, unless safety concerns dictate otherwise. Maximum Deficient Segments per Driving lane 4 Segments - A combination of one or more surface deficiencies exceeding the allowable threshold limit for rutting, raveling, bleeding/flushing, and debonding. 1 Segment - Rutting exceeding the allowable threshold limit. 1 Segment - Any single surface deficiency for raveling, bleeding/flushing, and debonding, exceeding 10 percent of the segment length. Threshold Limits and Corrective Action 1. Rutting. A single measure of rut depth must not exceed 1/4 inch for any 528 feet (0.1 mile) segment during the first 120 days after initial project acceptance. Rut depths that average in excess of 1/4 inch are deficient. The average rut depth will be defined by 5 measurements at 100 foot intervals in the segment as determined by the Engineer. Pavement segments where the original pavement rut depth exceeds 1/2 inch are excluded from the warranty for rutting threshold level. The Contractor will define locations where rutting exceeds 1/2 inch and provide the information to the Engineer. Work must not begin until the Engineer has verified and accepted the Contractor’s list of warranty exceptions. Any subsequent rutting caused from movement of the underlying pavement layers is excluded from the warranty. The measurement will be done using a straight rigid device that is a minimum of 7 feet long and of sufficient stiffness that it will not deflect from its own weight, or a wire under sufficient tension to prevent sag when extended 7 feet. Measurements will be taken by placing this “straightedge” across the pavement surface perpendicular to the direction of travel. The straightedgemust contact the surface on at least two bearing points with one located on either side of the rut. The straightedge is properly located when sliding the straightedge along its axis does not change the location of the contact points. Rut depth is then measured at the point of greatest perpendicular distance from the bottom of the straightedge to the pavement surface. Reapply the micro-surfacing on segments that have a rutting deficiency. The Engineer may accept alternative corrective measures, based on unique conditions. The corrective action must be placed on the full lane width. 2. Raveling. The threshold limit for raveling is 8 percent of the segment length. Corrective action for this parameter requires the Contractor to reapply Micro-surfacing to the deficient portion of the segment, including shoulders if part of the Micro-surfacing work. The Engineer may accept alternative corrective measures, based on unique conditions. The corrective action must be placed on the full lane width. 3. Bleeding/Flushing. The threshold limit for bleeding or flushing is 5 percent of the segment length. Corrective action for this parameter requires the Contractor to either reapply micro-surfacing, diamond grind, or remove and replace the micro-surfacing treatment on the deficient portion of the segment, including shoulders if part of the micro-surfacing work. Removal and replacement must be placed on the full lane width. The Engineer may accept alternative corrective measures, based on unique conditions.

E-28 Performance-Based Pavement Warranty Practices 4. Debonding. The threshold limit for debonding is 5 percent of the segment length. Corrective action for this parameter requires the Contractor to either reapply micro-surfacing or remove and replace the micro-surfacing on the deficient portion of the segment, including shoulders if part of the micro-surfacing work. The Engineer may accept alternative corrective measures, based on unique conditions. The corrective action must be placed on the full lane width. Hot Mix Asphalt Ultra-Thin Overlay (CPM) a. Description. This special provision must be used in conjunction with 12SP-500B to construct warranted Low, Medium, and High Volume hot mix asphalt (HMA) Ultra-Thin Overlay. Section 501 of the Standard Specifications for Construction remains in effect except as noted in this special provision. b. Limits of Warranted Work. The warranted work includes all HMA Ultra-Thin Overlay applications on driving lanes within the project limits unless otherwise indicated in the contract. c. Warranty Period. The length of warranty will be 2 years from the Acceptance Date of Warranted Work. d. Amount of Warranty Bond. Supply a warranty bond equal to 100 percent of the warranted work for HMA Ultra-Thin Overlay. e. Materials. Provide HMA and materials meeting the following requirements: 1. Bond Coat. The bond coat will be an emulsified asphalt in accordance with the requirements of section 904 of the Standard Specifications for Construction, Type SS-1h. 2. HMA Ultra-Thin Overlay. Compose the HMA Ultra-Thin Overlay of a mixture of aggregate, asphalt binder, and if required, mineral filler, as listed in Table 1. 3. Aggregate Gradation and Physical Properties. Ensure the combined gradation of the aggregate portion of the mixture, including the mineral filler, is within the limits of Table 2. Ensure the physical properties of the combined aggregates meet the criteria of Table 3. In addition, the sum of the shale, siltstone, ochre, coal, clay-ironstone and particles which are structurally weak or are found to be non-durable in service must not exceed 8.0 percent. 4. Performance Graded (PG) Asphalt Binder. Binder selection is based on present day two-way commercial ADT as listed in Table 4. Ensure the PG binder meets all the requirements in section 904 of the Standard Specifications for Construction. Substitution of reclaimed asphalt pavement (RAP) for part of the new materials required to produce the HMA is acceptable as follows: Reclaimed Asphalt Pavement up to 27 percent binder by weight of the total binder in the mixture is allowed with no change in binder grade. For reclaimed asphalt pavement > 27 percent RAP binder by weight of the total binder in the mixture, the binder grade for the asphalt binder is selected using a blending chart for high and low temperatures. Supply the blending chart and the RAP test data used in determining the binder selection according to AASHTO M 323. Table 1: HMA Ultra-Thin Overlay Mixture Requirements Parameter Value Air Voids % 4.5 VMA % (min.) based on Gsb 15.5 Fines/Binder % Max. 1.4 Nd 35

Michigan DOT Warranty Information E-29 Table 2: HMA Ultra-Thin Overlay Aggregate Gradation Sieve Size Total Passing Percent by Weight 1/2 inch 100 3/8 inch 99-100 No. 4 75-95 No. 8 55-75 No. 30 25-45 No. 200 3-8 Table 3: HMA Ultra-Thin Overlay Aggregate Physical Requirements Parameter Low Volume Comm. ADT <380 Medium Volume Comm. ADT 380 - 3400 High Volume Comm. ADT >3400 Percent Crush (min.) 50% 75% 95% Fine Aggregate Angularity Minimum Criteria 40 43 45 L.A abrasion loss (max.) 40 35 35 Aggregate Wear Index (AWI) (a) (a) (a) (a) AWI of 220 is required for projects with less than or equal to 2000 ADT, projects with ADT greater than 2000 the minimum AWI requirement is 260. Table 4: Asphalt Binder Selection for HMA Ultra-Thin Overlay Low Volume Comm. ADT <380 Medium Volume Comm. ADT 380-3400 High Volume Comm. ADT >3400 PG 58-28 PG 64 -28P PG 70-28P f. Construction. 1. Bond Coat Application. Apply the bond coat material to completely cover the prepared surface at a rate of 0.11 - 0.15 gallons per square yard. 2. Mixture Application Rate. The target application rate is 83 pounds per square yard. 3. Density. Thoroughly compact the mixture immediately after placement. 4. Mix Design. Submit a mix design in accordance with section 501.02 of the Standard Specifications for Construction. A. Materials Required. (1) 3 samples of mixture at * grams each, at optimum asphalt content (gyratory compaction) * = grams of mixture to achieve 115 mm ±3 mm height at Ndes (2) AWI samples per HMA Production Manual B. Documentation Required. (1) Form 1820 - Contractor Bituminous Mix Design Communication. (2) Form 1923 - Sample Identification. Note: must be included in each sample package. (3) Form 1813 - Submitted Mix Design Summary Sheet. (4) Form 1851 - Gyratory Compacted Bulk Specific Gravity Worksheet. (5) Form 1806 - Theoretical Maximum Specific Gravity. (6) Form 1849 - Bituminous Mix Design Checklist. (7) Form 1859 - Coarse Aggregate Gravity.

E-30 Performance-Based Pavement Warranty Practices (8) Form 1860 - Fine Aggregate Gravity. (9) Form 1879 - RAP Stockpile Summary Data Sheet. Note: only if RAP is included in the mixture. (10) Mix Design Regression Analysis. (11) Temperature - Viscosity Graph/Table showing mixing and compaction temperatures. (12) Summary Height Data @ Ndes, Replicate at all asphalt contents. g. Measurement and Payment. The completed work, as described, will be measured and paid for at the contract unit price using the following pay items: Pay Item Pay Unit HMA, Ultra-Thin, Low Volume, Warranty .......................................................Square Yard HMA, Ultra-Thin, Medium Volume, Warranty ................................................Square Yard HMA, Ultra-Thin, High Volume, Warranty ......................................................Square Yard HMA, Ultra-Thin, Low Volume, Warranty; HMA, Ultra-Thin, Medium Volume, Warranty and HMA, Ultra- Thin, High Volume, Warranty includes all materials, equipment, labor for preparing the surface, placing temporary pavement markings, placing the HMA Ultra-Thin Overlay mixture and complying with all requirements including the warranty. The placement includes placement of a single course of mixture for full width coverage as specified on the plans. h. Warranty Requirements. The following lists the allowable threshold limit for each condition parameter within each segment and the maximum number of allowable segments within a driving lane during the warranty period. If the threshold is exceeded for a condition parameter, for more than the maximum number of allowable segments, warranty work is required. The deficient segments for surface distress may or may not be contiguous to necessitate corrective action. The maximum allowable number of deficient segments for each condition parameter applies to each driving lane in each travel direction. Evaluate each driving lane independent of adjacent driving lanes. Ensure any pavement surface requiring removal/replacement to correct deficiencies, for any condition parameter, is replaced full-width across the driving lane. Perform the warranty work prior to conclusion of the warranty period or within such other time frame as agreed to by the Department and the Contractor, unless safety concerns dictate otherwise. Maximum Deficient Segments per Driving lane 4 Segments - A combination of one or more surface deficiencies exceeding the allowable threshold limit for rutting, raveling, bleeding/flushing, and debonding. 1 Segment - Rutting exceeding the allowable threshold limit. 1 Segment - Any single surface deficiency for raveling, bleeding/flushing, and debonding, exceeding 10 percent of the segment length. Threshold Limits and Corrective Action 1. Rutting. A single measure of rut depth must not exceed 1/4 inch for any 528 feet (0.1 mile) segment during the first 120 days after initial project acceptance. Rut depths that average in excess of 1/4 inch are deficient. The average rut depth will be defined by 5 measurements at 100 foot intervals in the segment as determined by the Engineer. Pavement segments where the original pavement rut depth exceeds 1/2 inch are excluded from the warranty for rutting threshold level. The Contractor will define locations where rutting exceeds 1/2 inch and provide the information to the Engineer. Work cannot begin until the Engineer has verified and accepted the Contractor’s list of warranty exceptions. Any subsequent rutting caused from movement of the underlying pavement layers is excluded from the warranty. The measurement will be done using a straight rigid device that is a minimum of 7 feet long and of sufficient stiffness that it will not deflect from its own weight, or a wire under sufficient tension to prevent sag when extended 7 feet. Measurements will be taken by placing this “straightedge” across the pavement surface perpendicular to the direction of travel. The straightedgemust contact the surface on at least two bearing points with one located on either side of the rut. The straightedge is properly

Michigan DOT Warranty Information E-31 located when sliding the straightedge along its axis does not change the location of the contact points. Rut depth is then measured at the point of greatest perpendicular distance from the bottom of the straightedge to the pavement surface. Reapply the HMA Ultra-Thin Overlay treatment on segments that have a rutting deficiency. TheEngineer may accept alternative corrective measures, based on unique conditions. Place the corrective action on the full lane width. 2. Raveling. The threshold limit for raveling is 8 percent of the segment length. Corrective action for this parameter requires the Contractor to reapply HMA Ultra-Thin Overlay to the deficient portion of the segment, including shoulders if part of the HMA Ultra-Thin Overlay work. The Engineer may accept alternative corrective measures, based on unique conditions. Place the corrective action on the full lanewidth. 3. Bleeding/Flushing. The threshold limit for bleeding or flushing is 5 percent of the segment length. Corrective action for this parameter requires the Contractor to either reapply HMA Ultra-Thin Overlay, diamond grind, or remove and replace the HMA Ultra-Thin Overlay treatment on the deficient portion of the segment, including shoulders if part of the HMA Ultra-Thin Overlay work. Place the corrective action on the full lane width. The Engineer may accept alternative corrective measures, based on unique conditions. 4. Debonding. The threshold limit for debonding is 5 percent of the segment length. Corrective action for this parameter requires the Contractor to either reapply HMA Ultra-Thin Overlay or remove and replace the HMA Ultra-Thin Overlay on the deficient portion of the segment, including shoulders if part of the HMA Ultra-Thin Overlay work. The Engineer may accept alternative corrective measures, based on unique conditions. Place the corrective action on the full lane width. Single Chip Seals (CPM) a. Description. This special provision must be used in conjunction with 12SP-500B to construct warranted single chip seals. The work consists of furnishing all materials, equipment and labor necessary for the surface preparation and application of a single chip seal or shoulder chip seal. b. Limits of Warranted Work. The warranted work includes all chip seal applications on driving lanes and shoulders within the project limits unless otherwise indicated on the proposal. c. Warranty Period. The length of warranty will be 2 years from the Acceptance Date of Warranted Work. d. Amount of Warranty Bond. Supply a warranty bond equal to 100 percent of the warranted work for chip seals. e. Materials. Provide materials in accordance with subsection 505.02 of the Standard Specifications for Construction with the following exceptions: 1. Asphalt Emulsion. For jobs north of M-46 with ADT<5000, CRS-2M as specified in section 904 of the Standard Specifications for Construction is an approved alternate. The emulsified asphalt must conform to certification procedures described in the Materials Quality Assurance Procedures Manual. 2. Coarse Aggregate. Coarse aggregates for all chip seals will be tested materials or provided by a prequalified aggregate supplier. Copper Smelter Slag will not be permitted for use as a chip seal aggregate. Table 1: Gradation and Physical Requirements for Single Chip Seal Aggregates Sieve Analysis (MTM 109), Total Percent Passing(a) Sieve Size 34CS-M 3/4 inch 100 1/2 inch 100 3/8 inch 90-100 1/4 inch N/A No. 4 0-15

E-32 Performance-Based Pavement Warranty Practices Sieve Analysis (MTM 109), Total Percent Passing(a) Sieve Size 34CS-M No. 8 0-5 No. 200 (Loss by Wash) 2.0 maximum Physical Requirements for Coarse Aggregates (34CS-M) Test – Description MTM 102 – L.A. Abrasion Resistance MTM 117 – Percent of Crushed Particles MTM 110 – Deleterious Particles in Aggregate ASTM D 4791 – Flat and Elongated Ratio, 3:1(e) MTM 111 – Aggregate Wear Index(f) Moisture Content at time of placement(g) (a) Ensure all aggregate is washed. (b) Natural aggregate. (c) Iron Blast-Furnace slag aggregate. (d) Includes the sum of shale, silt stone, structurally weak and clay-ironstone. (e) As determined for material retained on the No.4 sieve. The ratio between any combination of length, width or thickness. (f) Does not apply to a shoulder chip seal. (g) As described in MDOT Procedures for AggregateInspection. f. Construction. Ensure all construction is in accordance with subsection 505.03 of the Standard Specifications for Construction. g. Measurement and Payment. The completed work, as described, will be measured and paid for at the contract unit price using the following pay items: Pay Item Pay Unit Chip Seal, Single, Warranty...........................................................................Square Yard Chip Seal, Shoulder, Warranty ......................................................................Square Yard 1. Chip Seal, Single, Warranty includes all materials, equipment, labor for placement of a single application of asphalt emulsion and coarse aggregate to a pavement and the accompanying shoulders as specified in the plans. Payment also includes all materials sampling and testing, surface preparation, brooming, and documentation. 2. Chip Seal, Shoulder, Warranty includes all materials, equipment, and labor for placement of a single application of asphalt emulsion and coarse aggregate to only the shoulders. Payment includes materials sampling and testing, surface preparation, brooming, and documentation. h. Warranty Requirements. If any of the following performance criteria are not met, warranty work is required. 1. Surface Cracking. Each individual driving lane will be reviewed for measuring and quantifying surface cracking. One segment (528 feet in length) per 2 miles for each separate driving lane will be randomly chosen to review in detail. One segment will be reviewed for all projects or remaining portions of projects less than 2 miles, but greater than 1 mile. All open cracks will be logged within the chosen segments by crack type. The total length of longitudinal cracks will be logged for each segment. The transverse cracks will be logged by those between 6 inches and 6 feet in length and those equal or exceeding 6 feet in length. Transverse cracks and longitudinal cracks will be converted to defective cracks by the following; A. One transverse crack 6 feet or greater, in length = one defective crack. B. Five transverse cracks between 6 inches and 6 feet in length = one defective crack. C. A total of 125 feet of longitudinal crack(s) = one defective crack. D. If the number of defective cracks equal or exceed the values in Table 2, the segment is considered defective. Warranty work is required when the average of all segments reviewed exceed the following values in Table 2. Specification 35% maximum(b) ADT > 4,000 100% minimum on single face, 90% on 2 (a) 3.5% maximum(d) 15.0% maximum ADT > 4,000 260 minimum 4% maximum

Michigan DOT Warranty Information E-33 Table 2: Warranty Requirements for Surface Cracking Chip Seal Treatment Pavement Type Number of Defective Cracks Single Chip Seal Flexible 25 Corrective action for this parameter requires the Contractor to overband crack fill all cracks on the entire site, including shoulders if part of the chip seal work. 2. Loss of Cover Aggregate. The allowable threshold limit for loss of cover aggregate must not exceed 40 percent of the segment length. All segments in the driving lane or shoulder (528 feet in length) will be measured where the aggregate loss is evident. This measurement is linear and not dependent on area of aggregate loss. Corrective action, full-width across the driving lane or shoulder, will be required for each defective segment. 3. Bleeding/Flushing. The allowable threshold limit for bleeding or flushing must not exceed 40 percent of the segment length. All segments in the driving lane or shoulder (528 feet in length) will be measured where the bleeding or flushing is evident. This measurement is linear and not dependent on area of bleeding or flushing. Corrective action, full-width across the driving lane or shoulder, will be required for each defective segment. Double Chip Seals (CPM) a. Description. This special provision must be used in conjunction with 12SP-500B to construct warranted double chip seals. The work consists of furnishing all materials, equipment and labor necessary for the surface preparation and application of a double chip seal. b. Limits of Warranted Work. The warranted work includes all double chip seal applications on driving lanes and shoulders within the project limits unless otherwise indicated on the proposal. c. Warranty Period. The length of warranty will be 2 years from the Acceptance Date of Warranted Work. d. Amount of Warranty Bond. Supply a warranty bond equal to 100 percent of the warranted work for double chip seals. e. Materials. Provide materials in accordance with subsection 505.02 of the Standard Specifications for Construction with the following exceptions: 1. Asphalt Emulsion. For jobs north of M-46 with ADT<5000, CRS-2M as specified in section 904 of the Standard Specifications for Construction is an approved alternate. The emulsified asphalt must conform to certification procedures described in the Materials Quality Assurance Procedures Manual. 2. Coarse Aggregate. Coarse aggregates for all chip seals will be tested materials or provided by a prequalified aggregate supplier. CS-T must meet the gradation and physical requirements in Table 1. A. For double chip seal top courses, use a CS-T coarse aggregate. B. Copper Smelter Slag is prohibited for use as a chip seal aggregate. Table 1: Gradation and Physical Requirements for Double Chip Seal Aggregates Sieve Analysis (MTM 109), Total Percent Passing(a) Sieve Size CS-T 34CS-M 3/4 inch 100 100 1/2 inch 100 100 3/8 inch 100 90-100 1/4 inch 85-100 N/A No. 4 N/A 0-15 No. 8 0-15 0-5 No. 200 (Loss by Wash) 2.0 maximum 2.0 maximum

E-34 Performance-Based Pavement Warranty Practices Sieve Analysis (MTM 109), Total Percent Passing(a) Sieve Size CS-T 34CS-M Physical Requirements for Coarse Aggregates (CS-T & 34CS-M) Test – Description Specification MTM 102 – L.A. Abrasion Resistance 35% maximum(b) MTM 117 – Percent of Crushed Particles ADT < 4,000 95% minimum on single face 85% on 2 faces MTM 110 – Deleterious Particles in Aggregate 3.5% maximum(d) ASTM D 4791 – Flat and Elongated Ratio, 3:1(e) N/A 15.0% maximum MTM 111 – Aggregate Wear Index(f) ADT > 4,000 60/40 Weighted Average > 260(g) ADT < 4,000 220 minimumMoisture Content at time of placement(h) (a) All aggregate must be washed. (b) Natural aggregate. (c) Iron Blast-Furnace slag aggregate. (d) Includes the sum of shale, silt stone, structurally weak and clay-ironstone. (e) As determined for material retained on the No.4 sieve. The ratio between any combination of length, width or thickness. (f) Does not apply to a shoulder chip seal. (g) The top course will be weighted at 60% and base course will be weighted at 40% with the higher AWI aggregate as the top course. (h) As described in MDOT Procedures for Aggregate Inspection. f. Construction. Perform all construction in accordance with subsection 505.03 of the Standard Specifications for Construction with the following exceptions 1. Double Chip Seal Seasonal Limitations. Place double chip seals in accordance with the following: A. From June 1 to August 1, in the Upper Peninsula; B. From May 15 to August 15, in the Lower Peninsula north of M-46; and C. From May 15 to August 31, in the Lower Peninsula south of M-46. 2. Longitudinal Construction Joints in Double Chip Seal. A. For sections without corrugations and sections with shoulder corrugations construct per subsection 505.03.D.8.b in the Standard Specifications for Construction. B. Where centerline corrugations are present place the first course up to the corrugations on both bounds. For the second course construct joint at the far edge of the corrugation on the first pass. Only one pass of the top course should cover the corrugations. 3. Application Rates. A. Asphalt Emulsion. Apply asphalt emulsion from 0.28 gallons per square yard to 0.32 gallons per square yard for the top course of the double chip seal. B. Course Aggregate. Apply course aggregate from 16 pounds per square yard to 20 pounds per square yard for the top course of the double chip seal. g. Measurement and Payment. The completed work, as described, will be measured and paid for at the contract unit price using the following pay item: Pay Item Pay Unit Chip Seal, Double, Warranty .........................................................................Square Yard Chip Seal, Double, Warranty includes all materials, equipment, labor for placement of a double application of asphalt emulsion and coarse aggregate to a pavement and the accompanying shoulders as specified on the plans. Payment also includes all materials sampling and testing, surface preparation, brooming, and documentation. h. Warranty Requirements. If any of the following performance criteria are not met, warranty work is required. 1. Surface Cracking. Each individual driving lane will be reviewed for measuring and quantifying surface cracking. One segment (528 feet in length) per 2 miles for each separate driving lane will be randomly chosen to review in detail. One segment will be reviewed for all projects or remaining portions of projects less than 2 miles, but greater than 1 mile. All open cracks will be logged within the chosen segments by ADT > 4,000 100% minimum on single face, 90% on 2 faces

Michigan DOT Warranty Information E-35 crack type. The total length of longitudinal cracks will be logged for each segment. The transverse cracks will be logged by those between 6 inches and 6 feet in length and those equal or exceeding 6 feet in length. Transverse cracks and longitudinal cracks will be converted to defective cracks by the following; A. One transverse crack 6 feet or greater, in length = one defective crack. B. Five transverse cracks between 6 inches and 6 feet in length = one defective crack. C. A total of 125 feet of longitudinal crack(s) = one defective crack. If the number of defective cracks equal or exceed the values in Table 2, the segment is considered defective. Warranty work is required when the average of all segments reviewed exceed the following values in Table 2. Table 2: Warranty Requirements for Surface Cracking Chip Seal Treatment Pavement Type Number of Defective Cracks Double Chip Seal Flexible 30 Double Chip Seal Composite 30 Corrective action for this parameter requires the Contractor to overband crack fill all cracks on the entire site, including shoulders if part of the double chip seal work. 2. Loss of Cover Aggregate. The allowable threshold limit for loss of cover aggregate must not exceed 40 percent of the segment length. All segments in the driving lane or shoulder (528 feet in length) will be measured where the aggregate loss is evident. This measurement is linear and not dependent on area of aggregate loss. Warranty work, full-width across the driving lane or shoulder, will be required for each defective segment and shall be approved by and completed to the satisfaction of the Engineer. 3. Bleeding/Flushing. The allowable threshold limit for bleeding or flushing must not exceed 40 percent of the segment length. All segments in the driving lane or shoulder (528 feet in length) will be measured where the bleeding or flushing is evident. This measurement is linear and not dependent on area of bleeding or flushing. Warranty Work, full-width across the driving lane or shoulder, will be required for each defective segment and must be approved by and completed to the satisfaction of the Engineer. New/Reconstructed Jointed Plain Concrete Pavement a. Description. This special provision must be used in conjunction with 12SP-500A - Materials and Workmanship Pavement Warranty to construct new and reconstructed jointed plain concrete warranted pavement on an unbound or stabilized aggregate base. b. Limits of Warranted Work. The warranted work includes all jointed plain concrete pavement on driving lanes within the project limits unless otherwise indicated on the plans. c. Warranty Term. The warranty term will be 5 years from the date of Initial Acceptance otherwise termed the Acceptance Date of Construction. d. Warranty Bond. Supply a warranty bond equal to $1,000,000.00 or five percent of the total contract amount whichever is less. e. Initial Ride Quality Acceptance Criteria. Initial Ride Quality requirements are outlined in the contract. f. Warranty Requirements. Table 1 lists the allowable threshold limit for each condition parameter within each segment and the maximum number of allowable segments within a driving lane for each condition parameter. If any of the warranty requirements are not met, as a result of a defect in materials and/or workmanship, corrective action (warranty work) is required. The defective segments for surface distress may or may not be contiguous to necessitate corrective action. The maximum allowable number of defective segments for each condition parameter applies to each driving lane in each travel direction. Each driving lane must be evaluated independent of adjacent driving lanes. Any pavement surface requiring removal/replacement to correct deficiencies, for any condition parameter, must be replaced full-width across the driving lane.

E-36 Performance-Based Pavement Warranty Practices g. Corrective Action. Table 2 lists the recommended corrective actions to outline typical acceptable treatments for the various condition parameters. The Department will accept the listed corrective action if the action addresses the cause of the condition parameter. The Contractor may use an alternative action subject to Department approval. Table 1: Warranty Requirements Condition Parameter Threshold Limits Per Segment (Length = 528 feet) Max. Defective Segments Per Driving Lane-Mile(a) Transverse Crack 2 1 Longitudinal Crack 5% of segment length 1 Map Cracking 10% of segment area 1 Spalling 10% each slab(b) < 2 slabs 1 Scaling 15% of the slab area < 1 slab 1 Corner Cracking 1 1 Joint Sealant Failure 10% joint length(c) < 2 slabs 1 Shattered Slab 0 0 (a) The maximum allowable number of defective segments per driving lane, on the project, is determined by multiplying by the length of the specific driving lane in miles. (b) Can be non-contiguous. 10% value applies to total perimeter (four sides) of theslab. (c) Applies to all transverse and longitudinal joints on the perimeter of the slab. Non-contiguous lengths will be summed on a per slab basis. Table 2: Recommended Corrective Action Condition Parameter(a) Recommended Action(a) Longitudinal Cracking(b) Retrofit load transfer Transverse Cracking(b) Retrofit load transfer Corner Cracking Full-depth, tied, concrete patch Map Cracking Remove and replace(c) Spalling Repair with epoxy or cement mortar(d) Scaling Diamond grind surface(e) Joint Sealant Failure Remove and replace seal material(f) Shattered Slab Remove and replace (a) If multiple condition parameters are present, the recommended action may be revised. Removal and replacement is required if multiple crack types are present. (b) The appropriate corrective treatment is dependent on the crack’s location and depth. Full-depth T cracks require retrofit load transfer (> 90% load transfer efficiency) as a minimum. Full-depth/full- length L cracks require slab removal and replacement, if outside influence of laneties. (c) Dependent on cause. If cracking is entirely from “drying shrinkage”, no corrective action is required. (d) Repair dependent on area and depth of spall. Use most current procedures and material mixtures recommended by Materials Technology Section, in the Construction Field Services Division. (e) Diamond grinding applies to entire slab surface area where scaling exists. (f) Replace with existing material type. Neoprene seals are removed and replaced full-width.