806 - DURABLE PAVEMENT MARKING
800-25 (8) Pavement Marking Application. Provide the Engineer with a copy of the manufacturer’s application
instructions. Apply the pavement markings according to the manufacturer’s recommendations. Follow the manufacturer’s recommendations regarding pavement and ambient temperature at the time of application. The Engineer will verify the pavement and ambient temperatures before beginning work and when deemed necessary. Apply pavement markings straight and close to the intended alignment without abrupt changes that result in an unacceptable appearance. Meet the minimum retroreflectivity requirements in TABLE 806-1 .
9.Unsatisfactory Pavement Markin g. Remove and replace unsatisfactor y pavement marking according to the Contract Documents.
a.General. Remove and re place pavement markings that: have drag marks, gashes, gouges, foreign covering, discolored areas or areas that have failed to solidify. have improper adhesion, length or thickness. have areas that present a ragged appearance, ar eas that do not present sharply defined edges, or areas with abrupt unintended changes in alignment.
b.Alignment. Lines that deviate laterally from the intended alignment more than 2 inches in 200 feet may be rejected.
c.Width. The Engineer will take a minimum of 10 width measurements per color line randomly spaced every 1 mile. Remove and replace the defici ent widths of pavement markings so the total length of deficiency in any 1 mile section is less than 300 feet.
d.Retroreflectivity. See TABLE 806-1 for minimum retroreflectivity requirements for pavement marking. TABLE 806-1: MINIMUM RETROREFLECTIVITY REQU IREMENTS Type of Material Color millicandelas/sq m/lux* (minimum) (Initial) Cold Plastic White 250 Yellow 175 Patterned Cold Plastic White 500 Yellow 300 Epoxy or Multi-Component White 325 Yellow 250 High Durability Tape White 225 Yellow 175 Thermoplastic, Preformed Thermoplastic or Spray Thermoplastic White 300 Yellow 225 NOTE: Provide an acceptable 100-foot retroreflectometer to use on the project which will remain the property of the Contractor. In the presence of the Engineer, measure the retroreflectivity between 12 hours and 14 days afte r the application of all pavement markings. Take a minimum of 5 randomly spaced readings per color line every 1 mile. The Engineer will average all of the readings for each color line within the 1 mile section to determine the retroreflectivity. 806 - DURABLE PAVEMENT MARKING
800-26 If the pavement markings have a retror eflectivity reading as measured for TABLE 806-1 (in any 1 mile
section) less than that shown in TABLE 806-2 , remove and replace the entire 1 mile section. TABLE 806-2: RETROREFLECTIVITY RE ADINGS REQUIRIN G REMOVAL OF PAVEMENT MARKING Type of Material Color Retroreflectivity reading (R) in a 1 mile section (millicandelas) Cold Plastic White 200 Yellow 125 Patterned Cold Plastic White 450 Yellow 250 Epoxy or Multi-Component White 275 Yellow 200 High Durability Tape White 175 Yellow 125 Thermoplastic, Preformed Thermoplastic or Spray Thermoplastic White 250 Yellow 175
10.Acceptance of Pavement Marking. The Engineer will not examine pavement marking for final acceptance until the pavement markings complete a 180 cal endar day observation period. The Contractor is responsible for the pavement marking during this period. The 180 calendar day observation period begins the day following the completion of the pavement marking. Providing all other work on the contract is complete, the Engineer will not assess working day charges duri ng the 180 calendar day observation period. Immediately following the 180 day observation period, arrange with the Engineer to have a joint meeting to examine the pavement marking. The Engineer will provide written results of the final examination to the Contractor within 5 business days of the joint meeting. Before the project is accepted, replace all failed paveme nt markings, at own expens e. The pavement marking is failed, when more than 10% of the substrate is exposed in a 2,000-foot section of longitudinal pavement marking line. The transverse lines and symbols will be evaluated separately for the exposure of 10% substrate. Abrasion of pavement marking at private entrances or intersections may be excluded from examination. If the Contractor fails to complete the required replace ment of pavement markings within 10 business days of the date of the notice of the unacceptable pavement markings , during which the application of pavement markings is not precluded by adverse weathe r or road surface conditions, the Engineer, af ter giving the Contractor written notice, will reinstate the assessment of work ing day charges or Liquidated Damages. Working day charges or Liquidated Damages will continue until the work is accepted. If more than 30% of pavement marking is required to be replaced, the replacement pavement markings will not be accepted until the completion of an a dditional 180 calendar da y observation period. The Engineer will, upon sati sfactory inspection of the pavement mark ing, accept the work and terminate the Contractor’s responsibilities.
b.Cold Plastic/Patterned Co ld Plastic Pavement Marking. Grind an inset for the pavement marking into the surface of the pavement. Grind the inset 0.08 inches (+ 0.01 inch tolerance) deep, with the width and length of the inset a maximum of 2 inches greater than the dimensions of the pavement marking. On new or existing PCCP, cut the marking tape at any joint in the pavement that is crossed by the tape. Apply adhesive-sealer primer of a type recommended by the manufacturer. Primer is required on all tape applications regardless of temperature, date or season.
c.Epoxy Liquid Pavement Marking. When pavement markings are applied to PCCP (including concrete bridge decks) less than 1 year old, remove all curing compounds and laitance by shot, sand or waterblasting. Use a slower curing epoxy material (40 minutes) for pavement markings applied to PCCP. For other surfaces, fast setting (10 minutes) epoxy material may be used with appr oval of the Engineer. Apply the epoxy liquid material closely behind the surface cleaning procedures. 806 - DURABLE PAVEMENT MARKING
800-27 Before mixing the components of the pavement marking material, heat the individual components to the
temperature ranges recommended by the manufacturer of the material. Do not excee d the maximum recommended temperature at any time. Apply the epoxy liquid pavement marking material at a thickness of 20-25 mils on all pavement. Immediately apply all glass beads (double drop system or blended bead) to the epoxy liquid pavement marking at the glass bead gradation and bead drop rate recommended by the manufacturer to obtain the required level of retroreflectivity.
d.Multi-Component Liquid Pavement Marking. When pavement markings are applied to PCCP (including concrete bridge decks) less than 1 year old, remove all curing compounds and laitance by shot, sand or waterblasting. For intersection grade multi-component, grind the inset 15 mil (+10 mil tolerance) deep, with the width and length of the inset a maximum of 2 inches greater than the dimensions of the pavement marking on concrete surfaces. Multi-component liquid pavement mark ing will only be allowed for use on concrete pavement on a pre- qualified basis. Apply the multi-component liqui d material closely behind th e surface cleaning procedures. Before mixing the components of the pavement marking material, heat the individual components to the temperature ranges recommended by the manufacturer of the material. Do not excee d the maximum recommended temperature at any time. Apply the multi-component liquid pa vement marking material at the thickness of 20-25 mils on all pavement. Immediately apply the glass beads (double drop system or blended drop) to the multi-component liquid pavement marking at the glass bead gradation and bead drop rate recommended by the manufacturer to obtain the required level of retroreflectivity.
e.Intersection Grade Pavement Marking.
1.Multi-Component. Follow subsection 806.3d .
2.High Durability Tape. Grind an inset for the pavement marking into the surface of the pavement. Grind the inset 80 mil (+10 mil tolerance) deep with the width and length of the inset a maximum of 2 inches greater than the dimensions of the pavement marking. Apply adhesive-sealer primer of a type recommended by the manufacturer. Primer is required on all tape applications regardless of temperature, date or season. On new or existing PCCP, cut the marking tape on either side of any joint in the pavement that is crossed by the tape.
3.Preformed Thermoplastic. Grind the inset 40 mil (+ 20 mil tolerance) deep with the width and length of the inset a maximum of 2 inches greater than the dimensions of the pavement marking on concrete surfaces. Use a heating device recommended by the material manufacturer to fuse the preformed thermoplastic to the pavement. Apply adhesive-sealer primer of a type recommended by the manufacturer. Primer is required on all preformed applications on concrete regardless of temperature, date or season. Apply the pavement markings as recommended by the manufacturer.
f.All Thermoplastic Pavement Marking. The Engineer will verify the thickness of the thermoplastic pavement marking. Thickness will be checked by placing me tal plates or other suitable material of known thickness in a 3-foot section along the path of application at 2 to 3 locations. After the application of the thermoplastic material, the samples will be cut free. The material thic kness will be measured using either a micrometer or vernier calipers (with proper correctio n for the metal plate). The thickness reco rded for the locations within the 3-foot section will be averaged. Initially, thic kness determinations will be made every ⅓ mile for each color and each stripe width. Once a pattern of compliance is established, the Engineer may reduce the frequency of thickness verification to once each 1 mile section. Failure of a sec tion will require testing to return to the initial frequency until compliance may be re-established. The location of the 3-foot sample segment within the sample section will be selected at random. The Contractor may provide other devices for gauging thickness to the Engineer for approval. Apply thermoplastic pavement markings between April 15 and October 15. If the manufacturer’s recommendations allow, the Engineer may waive the date re strictions. The Engineer will notify the Contractor in writing of any allowed variance.
1.Thermoplastic Pavement Marking. The required thickness for longitudinal markings is a minimum of 90 mil at the edges, and a maximum of 125 mil at the cente r of the stripe. The required thickness for transverse markings and symbols is a minimum of 90 mil at the edges, and a maximum of 140 mil at the center.
Source: Kansas Standard Specifications for State Road and Bridge Construction, 2015 Edition. Pages 516–518 of 978.