SECTION 860: REFLECTORIZED PAVEMENT MARKINGS DESCRIPTION 860.20: General This item of work consists of furnishing materials and the application of Reflectorized Pavement Markings in accordance with the MUTCD. MATERIALS 860.40: General Materials shall be as specified under the particular payment item being used and shall meet the appropriate requirements specified in the following Subsections of Division III, Materials: General Requirements for Paints and Protective Coatings ........................................ M7.00.00 Liquid Thermoplastic Striping Material ............................................................................. M7.01.3 White Traffic Paint ...................................................................................................................... M7.0 1.05 Yellow Traffic Paint ..................................................................................................................... M7.01.06 Glass Beads ..................................................................................................................................... M7.01.07 White High Heat Rapid Drying Traffic Marking Material ............................................ M7.01.08 Yellow High Heat Rapid Drying Traffic Marking Material .......................................... M7.01.09 Fast Drying White Traffic Paint ............................................................................................. M7.01.10 Fast Drying Yellow Traffic Paint ............................................................................................ M7.01.11 Striping Powder ........................................................................................................................... M7.01.12 Preformed Permanent Plastic Pavement Markings or Legends ............................... M7.01.18 Green Pavement Coatings ........................................................................................................ M7.01.21 Fast Drying White Water -borne Traffic Paint .................................................................. M7.01.23 Fast Drying Yellow Water -borne Traffic Paint ................................................................ M7.01.24 CONSTRUCTION METHODS 860.60: Equipment All equipment used for the application of pavement markings shall be approved by the Engineer and shall be of standard commercial manufacture. All equipment and devices necessary for the protection of the pavement marking and the traveling public shall be approved by the Engineer. The pavement marking equipment shall be operated in accordance with the manufacturer’s recommendations. Truck mounted equipment shall be used for the application of pavement markings except in such cases where in the Engineer’s judgment travel will be unreasonably delayed and/or the quality of the work performed by the machine is unsatisfactory. The Contractor shall supply the following equipment for each pavement marking operation:
1.An infrared pistol thermometer meeting the requirements of 450.42: Weather Limitations ;
2.A digital thickness gauge for measuring the thickness of thermoplastic lines;
3.A wet film thickness gauges for painted lines; and
4.A retroreflectometer with certification of calibration within the last 6 months. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.442 202 4 Edition The above equipment shall remain the property of the Contractor upon completion of the project. 860.61: Layout of Work A schedule of pavement marking operations shall be furnished by the Contractor for the approval of the Engineer prior to the application of any pavement markings. This schedule must be in the office of the Engineer 7 days prior to the proposed date of application of any pavement markings. The Engineer will provide at a convenient location on the roadway a line of reference for use by the Contractor in establishing the location of markings. The line of reference shall be at a maximum of 50-ft intervals by means deemed satisfactory by the Engineer. All markings shall follow the line of reference without deviation. Any line deviating from the establishing control of incorrect width shall be reapplied, as directed by the Engineer in accordance wi th 860.62: Application of Markings . 860.62: Application of Markings Pavement markings shall be applied as follows: Table 860. 62-1: Pavement Marking Application Requirements Material Application Temperature Line Thickness Above Roadway Surface Glass Bead Application M7.01.3 400°F to 425°F 125 to 188 mils Drop -on 1 lb per 10 ft² M7.01.23 135°F to 150°F 15 mils 6 lb per ga l M7.01.24 135°F to 150°F 15 mils 6 lb per gal Line thickness above the roadway surface shall meet the minimum requirements regardless of the type of surface on which it is applied. No thinners shall be used for the above listed pavement marking applications except in accordance with the manufacturer's specifications and at the direction of the Engineer. No paint or pavement marking material shall be heated above the temperature marked on the container. Glass beads for water -borne traffic paint and thermoplastic pavement markings shall be applied by the single drop method using AASHTO M 247 Type 1 glass beads sprayed or dropped on pavement marking material. Glass beads for epoxy and polyurea pavement markings shall be both standard gradation beads and large gradation beads. Standard gradation beads shall be applied by the double drop method. Large gradation beads shall be injected into or dropped onto the liq uid pavement marking material. Large gradation beads shall be applied first, immediately followed by standard gradation beads. The beads shall adhere to the cured pavement marking material or all pavement marking operations shall cease until corrections ar e made. Markings shall be applied only in seasonable weather and in accordance with good painting practices. The surface shall be dry and free of sand, grease, oil or other foreign substances prior to the application. The Contractor shall prepare the surface to ac cept the application as part of this item, with no additional compensation. The Engineer will make the final determination for all of the foregoing. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.443 202 4 Edition HMA pavements shall have been in place for 48 hours prior to the application of pavement markings except preformed permanent plastic pavement markings which can be applied immediately. When it is necessary to expedite the flow of traffic, the Engineer may reduce the waiting period as is deemed necessary. If for any reason material is spilled or tracked on the highway, or any markings applied by the Contractor, in the Engineer's judgment, fail to conform to 860.61: Layout of Work , because of a deviation from the desired pattern, the Contractor shall remove such material by a method that is not injurious to the roadway surface and is acceptable to the Engineer, clean the roadway surface and prepare the surface for a reapplication o f markings and reapply the markings as directed without additional compensation for any of the foregoing corrective operations. The ambient (air) temperature for thermoplastic application is to be a minimum of 45°F and rising at the time of marking operations. If work has started and air temperatures fall below 45°F and continuous cooling is indicated, work shall be stopped. In cool weather conditions, temporary dr ops down to 40°F will be tolerated, providing temperatures also vary upwards. Sustained striping (greater than one hour) at 40°F shall not be allowed. Starting work at air temperatures lower than 45°F shall not be allowed. 860.63: Protection of Markings Markings shall remain protected until sufficiently dry to bear traffic on highways that are open to traffic. Markings shall be protected by traffic cones conforming to Subsection 850: Traffic Controls for Construction and Maintenance Operations , except in the case of markings which cure to a no track condition in 180 seconds or less in the latter case protection may be provided by a convoy of vehicles with suitable warning devices to warn overtaking or onco ming traffic that the pavement marking operation is in progress.
A.Broken Lines. On tangents and on curves of 1 ,000 -ft radius or greater, at least one cone shall be placed on every other bar. On curves of less than 1 ,000 -ft radius, one cone shall be placed on every bar
B.Solid Lines. On tangents and on curves of 1 ,000 -ft radius or greater, cones shall be spaced not over 80 ft apart and on curves of less than 1 ,000 -ft radius the spacing shall be not over 50 ft . On edge line adjacent to the median wider spacing may be used at the direction of the Engineer. In order to control the proper positioning of the cones during the drying period, the Contractor shall assign sufficient personnel as determined by the Engine er. Such control is dependent on traffic density, cone widths, etc. 860.64: Accommodation of Traffic All traffic control devices required for pavement marking installation or protection of markings shall be in accordance with Subsection 850: Traffic Controls for Construction and Maintenance Operations . Lane closures, shifts, or other temporary traffic control setups to accommodate pavement marking operations shall be approved by the Engineer. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.444 202 4 Edition 860.65: Recessed Markings Prior to cutting out the grooves for recessed markings, the Contractor shall layout the proposed pavement markings per 860.61: Layout of Work . Once the Engineer has inspected and approved the proposed striping layout, the grooves for the proposed pavement markings may be cut. No pavement grooving shall be done without the prior approval of the Engineer. Groove position shall be a minimum of 4 in . from the edge of the pavement marking to any longitudinal pavement joints. The groove shall not be installed on bridge joints, on drainage structures, or in other areas identified by the Engineer. The groove shall not be installed continuously for intermi ttent pavement markings, but only where markings are to be applied. The use of gang stacked diamond cutting blades to grind a smooth square slot is required for producing all grooves. The spacers between blade cuts shall be such that there will be less than a 10 mil rise in the finished groove between the blades. The acceptability of the surface texture will be determined by the Engineer. The diamond grinder shall have an articulating head so that the slots are installed correctly on grades and super elevated sections. Grooves that are ground deeper or wider than the specified allowable limits shall be repaired per the direction of the Engineer at no additional cost. Grooves that are ground too shallow, too narrow, or with unacceptable rises between blade cuts shall be reground to the correct size, depth, and surface finished at no additional cost. Slots ground out of alignment shall be patched using an approved method and materials. Grooves shall be 1 in . ±¼ in . wider than the pavement marking width. Groove depth is dependent upon pavement marking material type and shall be per Table 860.65 -1. Table 860.65- 1: Groove Depth for Recessed Pavement Markings Pavement Marking Material Type Groove Depth Multi- Component (i.e., Epoxy, Polyurea, Urethane) 80 mil Preformed 150 mil Thermoplastic Proposed wet thickness of line + 40 mil Water -borne Paint 80 mil The Contractor may propose an alternate groove depth based upon recommendations of the pavement marking material manufacturer. An alternate depth shall be approved by the Engineer prior to installation. Groove depth shall be consistent across the full width of the groove. Depth plates shall be provided by the Contractor to the Engineer to assure that the specified groove depth is achieved. Grooves shall be clean, dry and free of laitance, oil, dirt, grease, paint or other foreign contaminants. Shrouds and a vacuum apparatus shall be included as part of the grinder to remove larger pieces of pavement that are ground out. If water is used to c lean the groove or the grooving process takes place during rainfall, a minimum of 24 hours of dry time is required prior to the placement of pavement markings. The grooves shall be dry for 24 hour prior to placement of the pavement markings. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.445 202 4 Edition After the depth, width, length, and surface condition has been approved by the Engineer, an air lance shall be used to remove fine particles from the groove. Air compressors shall initially be blown out away from the application area to prevent compressor condensation build -up from entering the groove. The Contractor shall prevent traffic from traversing the grooves per 860.63: Protection of Markings and re -clean grooves, as necessary, prior to application of pavement markings at no additional cost. All grooves must be approved by the Engineer prior to the placement of pavement markings. COMPENSATION 860.80: Method of Measurement Markings are to be paid for on the actual length of lines applied under the various items of the Contract. The lengths of solid lines will be obtained by:
1.Calculation from established base line stations; or
2.Use of a measuring wheel; or
3.Vehicle odometer readings. The length of broken lines (except for broken lines less than 10 ft , the actual length shall be used) will be obtained by using 25% of the results obtained above for solid lines. Patterns, other than lines, are to be paid for by the square foot area under the item in the Contract. 860.81: Basis of Payment The work under these items will be paid for at the contract unit price under each item of the Contract based on the measurements as determined by the Engineer. The contract prices shall include all material, labor, and equipment required or incidental to the satisfactory completion of the work. 860.82: Payment Items 860.106 6-Inch Reflectorized White Line (Painted) ........................................................ Foot 860.112 12-Inch Reflectorized White Line (Painted) ..................................................... Foot 861.106 6-Inch Reflectorized Yellow Line (Painted) ...................................................... Foot 861.112 12-Inch Reflectorized Yellow Line (Painted) ................................................... Foot 864. Pavement Arrow Reflectorized White (Painted) ............................................ Square Foot
864.01 Pavement Arrow and Legends Reflectorized White - Inlay Tape ............ Square Foot
864.02 Pavement Arrow and Legends – Tape ................................................................. Square Foot
864.04 Pavement Arrows and Legends Reflectorized White (Thermoplastic) . Square Foot
866.106 6-Inch Reflectorized White Line (Thermoplastic) ......................................... Foot 866.112 12-Inch Reflectorized White Line (Thermoplastic) ....................................... Foot 867.106 6-Inch Reflectorized Yellow Line (Thermoplastic) ........................................ Foot 867.112 12-Inch Reflectorized Yellow Line (Thermoplastic) ..................................... Foot Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.446 202 4 Edition SUB
Source: , Edition.