177 up to the full vertical depth of the course to be pla ced, and a tack coat of asphalt material shall be applied. Joints adjacent to curbs, gutters, or adjoining pavement shall be formed by transporting back sufficient hot material to fill any space left uncovered by the paver. The longitudinal joint betw een adjacent mats shall be set up to a sufficient height to receive the full compactive effort from the rollers and shall be tacked prior to placing adjacent material. Transverse joints shall be checked for smoothness with a ten foot straight edge prov ided by the Contractor. All surface irregularities shall be corrected prior to proceeding with paving operations.
401.10.6 Safety Edge: When the total specified lift thickness of pavement is 1.5 inches
or greater, asphalt safety edge shall be constructed on the outside pavement edge. The device utilized shall be a model listed on Division Approved Product Listing. The resulting finishe d surface of the safety edge shall be sufficiently consolidated so as to show no segregation, or raveling of the aggregate and shall have the same surface profile and texture of the compacted mat surface. Safety edge is not to be used through intersectio ns, against curb or barrier, or when directed by the Engineer. The paving operation shall allow for automatic and/or manual transitions at cross roads, driveways, and intersections. The Engineer may allow short sections of handwork for transitions at dri veways, intersections, interchanges, and bridges.
401.11 Protection of Pavement and Traffic Control :
The Contractor shall be responsible fo r the protection of asphalt surfaces from damage by their equipment and personnel. When the construction of asphalt surfaces is undertaken on projects under public traffic and the road surface is sixteen ( 16) feet wide or greater and the ADT is 400 or gre ater, the Contractor shall place no passing signs, Interim pavement markings, and Temporary pavement markings to delineate the edge line, centerline, and/or lane line of the roadway as required herein and in the project plans. The provision of Section 636 : Maintaining Traffic shall apply.
401.12 Method of Measurement :
Asphalt concrete will be measured by the ton, or square yard. For projects paid by the ton, the quantity will be determined by the Contractor from the total weigh slips for each vehicle load weighed upon an approved standard scale or from digital printout slips from an automatic batching plant, and certified by the Contractor as correct. For projects paid by the square yard, the quantity will be determined by the Plan Quantity as provided for in the proposal unless otherwise directed by the Engineer. Any patching or leveling mixture placed on a subbase or base course constructed in the same Contract with the asphalt items shall be at the expense of the Contractor. No additional compensation will be allowed for the material or any work incidental to its placement. No additional measurement is necessary nor will addition compensation be allowed for the placement of Safety Edge.
401.13 Basis of Payment :
The quantities determine as provided ab ove, will be paid for at the contract unit price for the items listed below, which prices and payment shall be full compensation for furnishing all the materials and doing all the work herein prescribed in a workmanlike and acceptable manner, including all labor, tools, equipment, field laboratory, supplies, and incidentals necessary to complete the work. 178 The conditioning, cleaning, and sweeping of the existing base or underlying surface shall be considered as part of the construction of the appropriate it ems listed in 401.14, and no additional compensation will be allowed for "Cleaning and Sweeping". There will be no additional compensation for tack coat material used for minor (spot) areas to be patched and leveled; the cost of this tack coat material wi ll be included in the unit bid price for the “patching and leveling” Item. There will be no additional compensation for Interim Pavement Markings.
401.13.1 When a Lot of asphalt material is found not in compliance with the tolerance
requirements of MP 401.02.27 or MP 401.02.29, it shall be subject to a price adjustment in accordance with the criteria established in this MP.
401.13.3 A Lot of asphalt pavement shall have its price be adjusted in accordance with
Table 401.13.3A using Formula -1. If a Lo t of asphalt pavement is associated with a Longitudinal Joint Lot its price shall be adjusted in accordance with Table 401.13.3A and Table 401.13.3B using Formula -2. The longitudinal joint density determined in accordance with Section 401.6.4 shall repres ent the Lot on which the joint density testing was performed. Any price adjustment for joint density shall be applied to that Lot only. Use Formula -1 on the first lane paved before a longitudinal joint is constructed. Use Formula -2 when both mat and joi nt density testing is required on a project. FORMULA -1: Lots requiring only mat density testing: Lot Price Adjustment (Mat only) = (unit price) X (Lot quantity) X (mat density price adjustment % from Table
401.13 3a)
FORMULA -2: Lots requiring both mat and joint density testing: Lot Price Adjustment (Mat + Joint) = (unit price) X (Lot quantity) X [(mat density price adjustment % from Table
401.13 3A) + (joint density price adjustment %
from Table 401.13.3B)] 179 TABLE 401.13.3A Adjustment of Contract Price for Pavement Mat Density Percent of Density Percent of Contract Price to be Paid Greater than 97 % Note 1 93% to 97% 100 92% 99 88% to 91% = 99 – 4*(92% - Percent density) Less than 88% = 84 – 10*(88% - Percent density) Note 2 Note 1: Mat density slightly above 97% is normally only a problem if it leads to asphalt flushing on the surface of the mat or rutting due to an unstable mix. The Division will make a special evaluation of the material and determine the appropriate action. Note 2: When the density is less than 93%, the mat will be more susceptible to accelerated deterioration and a decrease in the expected service life of the pavement. For mat densities less than 88%, the percent of Contract Bid Price will be decreased by an additional 10% per percentage of mat density less than 88%, unless a Special evaluation performed by the Division determines a more appropriate action. TABLE 401.13.3B Adjustment of Contract Price for Pavement Joint Density Percent of Joint Density Percent Adjustment Greater than 97 % Note -3 90% to 97% Note 4 0% 89 % Note 5 -1.0% 88 % Note 5 -3.0% Less than 88 % Note 5 and 6 Note 3: Density greater than 97% is normally only a problem if it leads to asphalt flushing on the surface of the mat or rutting due to an unstable mix. The Division will make a special evaluation of the material and determine the appropriate action. Note 4: If the longitudinal joint density is determined to be less than 92% on 25% or more of the total project LOTs, then the Contractor shall be required to seal the joint a minimum of 3” on each side of the joint with a heated PG 64S -22 binder (or approved equivalent) on the entire project at no additional cost to the Division. Note 5: Any longitudinal joint densities determined to be below 90% the Contractor shall be required to seal the joint a minimum of 3” on each side of the joint on the entire project with a heated PG 64S -22 binder (or approved equivalent) at no additional cost to the Division Note 6: Density values less than the minimum specified 90% will be more susceptible to accelerated deterioration of both the joint and the surrounding pavement. For Joint densities less than 88%, the percent of adjustment will be decreased by an additional 6% per percentage of joint density less than 88%, unless a Special evaluation performed by the Division determines a more appropriate action.
401.13.4 When a Lot of asphalt pavement is determined to be statistically non -conforming
in accordance with Criteria ‘B’ of Section 401.7.4, the Division will review the plans and project records to determine if there is an acceptable explanation for this deficiency. If it is determined that a def iciency does exist, one of the following adjustments may be used. If the deficiency is less than ¾ inch, the Division may choose to accept the material at a price equal to the bid price times the ratio of the average thickness divided by the specified thi ckness. If the deficiency is ¾ inch or greater, the Division may require that an additional lift of material [specified to the nearest ¼ inch of the deficiency] be placed at the Contractor’s expense. Retesting of the overlay will be at the expense of the Contractor in accordance with MP 109.00.20.
401.14 Pay Items :
ITEM DESCRIPTION UNIT 401001 -* “design method” Asphalt Base Course, “aggregate type”, Type “mix type” Ton 401002 -* “design method” Asphalt Wearing Course, “aggregate type”, Type “mix type” Ton 401003 -* “design method” Asphalt Patching And Leveling Course, “aggregate type Ton 401007 -* “design method” Asphalt Scratch Course, “aggregate type”, Type ‘mixed type” Ton 401017 -* Asphalt Pothole Repair, Type Ton * Sequence number “design method” shall be either Marshall or Superpave “aggregate type” shall be either stone and gravel or slag “mix type” from Table 401.4.2A or 401.4.2B