758 considered as included in the contract price for the marking. Measurement and payment for sawcut grooves shall be in accordance with the special provisions. Payment will be made for Type I and Type IV permanent pavement symbols, legends and short lines at the contract unit price, regardless of whether Type I or Type IV pavement markings are used. The accepted quantities for removal of curing compound from new Portland cement concrete pavement and the ap plication of primer - sealer, measured as provided above, will be paid for at the respective contract unit prices, under the items of work established in the bid schedule. When Type II or III temporary preformed pavement markings are required for maintaining traffic through a construction work zone and are approved for use by the Engineer , but are not listed as pay items in the bidding schedule, they will be paid for in accordance with the provisions of Subsection 109.04 of the specifications. Additional payment will be made for replacement of Type II or Type III temporary preformed pavement markings when the contractor is req uired by the Engineer to install marking materials on distressed pavements or during adverse weather conditions and subsequent failure occurs. Distressed pavement conditions are defined as alligator cracking, bleeding, or spalling of bituminous pavements and spalling of PCC pavements. Adverse weather conditions are defined as any occurrence where application is required at pavement temperatures less than 60 degrees F or when precipitation occurs within 24 hours before or after application. The Department will pay for the replacement, where failures occur, at the contract unit price for the initial occurrence. In the event a second failure occurs when markings have been reapplied on distressed pavements or under weather conditions described above, the Engi neer shall determine if conditions require primer, alternate methods of marking, or reapplication of preformed markings. Preformed markings will be paid for at the contract unit price. Primers or other methods of markings deemed necessary by the Engineer to remedy second failures will be paid for in accordance with the provisions of Subsection 109.04 of the specifications. 706- 1 Description: The work under this section shall consist of cleaning and preparing the pavement surface; furnishing all materials, equipment, tools and labor; and placing raised pavement markers of the type specified at the locations and in accordance with the details shown on the plans and the requirements of these specifications. TABLE OF CONTENTS INDEX 759 706- 2 Materials: 706- 2.01 General: Certificates of Compliance, for raised pavement markers and adhesive, conforming to the requirements of Subsection 106.05 of the specifications shall be submitted to the Engineer at least 10 days prior to use. A minimum of one sample per lot per type of marker shall be taken by the Engineer. The pavement marker samples shall be tested to determine conformance to the applicable standard drawings and these specifications. The base of the pavement markers shall be free from glass glaze or from substances which may reduce its bond to the adhesive. The base shall be flat and its deviation from a flat surface shall not exceed 0.05 inches. 706- 2.02 Reflective Pavement Markers: Reflective pavement markers shall be of the following type: Type C Clear, red Type D Yellow, two -way Type E Clear, yellow Type G Clear, one- way Type H Yellow, one- way Reflective pavement markers shall be of the prismatic reflector type consisting of a molded methyl methacrylate or suitably compounded acrylonitrile butadiene styrene (ABS) shell filled with a mixture of an inert thermosetting compound and filler material. The exterior surface of the shell shall be smooth and shall contain one or two prismatic reflector faces of the color specified. When illuminated by an automobile headlight, the color of the reflectors shall be an approved clear, yellow, or red as designated. Reflectors not meeting the required color may be rejected. Permanent reflective pavement markers will be tested for compressive strength, abrasion resistance and specifi c intensity. Permanent reflective pavement markers shall have thin untempered glass or other abrasion resistant material bonded to the prismatic reflector face to provide an extremely hard and durable, abrasive resistant reflector surface. The glass, or other abrasion resistant surface, is not required on the red faces of two- way (Clear/Red) permanent reflective markers. The area covered by the glass, or other abrasion resistant surface, shall not be less than 3 square inches. TABLE OF CONTENTS INDEX 760 Temporary reflective pavement markers will be tested for compressive strength and specific intensity. Temporary reflective pavement markers, or permanent reflective pavement markers used as temporary, will not be tested for abrasion resistance. The strength by compressive loading shall be at least 2,000 pounds for both permanent and temporary reflective pavement markers. The original specific intensity of each reflecting surface for both temporary and permanent reflective markers shall not be less than the following: Reflectance: Specific Intensity: candelas/foot -candle degrees incidence Clear Yellow Red 0 3.0 1.8 0.75 20 1.2 0.72 0.30 Permanent reflective pavement markers shall be subject to an abrasion resistance test as follows: Steel Wool Abrasion Procedure: Form a 1-inch diameter flat pad using No. 3 coarse steel wool per Federal Specification FF -W1825. Place the steel wool pad on the reflector lens face. Apply a force of 50 pounds and rub the entire lens surface 100 times. After the lens surface has been abraded, the specific intensity of each clear and yellow reflective surface shall be not less than that required above for the original specific intensity. 706- 2.03 Non -Reflective Pavement Markers and Reflectorized Dagmars: Non -reflective pavement markers shall be of the following types: Type Color A white AY yellow
Reflectorized Dagmars shall be of the following types: Type J white Type JY yellow Non -reflective pavement markers and reflectorized dagmars shall consist of a heat -fired, vitreous ceramic base and a heat -fired, opaq ue glazed surface which will produce the required properties. Markers shall be produced from any suitable combination of intimately mixed clays, shales, flints, feldspars, or other inorganic material which will meet the properties herein required. Markers shall be thoroughly and evenly matured and free from defects which will affect appearance or serviceability. TABLE OF CONTENTS INDEX 761 The top surface of the marker shall be in reasonably close conformity with the configuration shown on the plans. Markers shall be convex and the radius of curvature shall be between 3- 1/2 and 6 inches, except that the radius of the 1/2 inch nearest the edge may be less. All edges shall be rounded and any change in curvature shall be gradual. The top and sides shall be smooth and free of mold mar ks, pits, indentations, air bubbles, or other objectionable marks or discolorations. Non -reflective pavement markers and dagmars shall meet the following requirements: Glaze Thickness: Inches 0.005 Minimum Moh Hardness: 6 Minimum Directional Reflectance: (White Only) Glazed Surface Body of Marker 75 Minimum 70 Minimum Yellowness Index: (White Only) Glazed Surface Body of Marker
0.07Maximum
0.12Maximum
Color (Yellow Only): Purity: percent, range Dominant Wave Length: mu, range Total Luminous Reflectance (Y valve) 75 - 96
0.41Minimum
Compressive Strength: pounds 1,500 Minimum Water Absorption: percent 2.0 Maximum Autoclave Glaze shall not spall, craze or peel
Reflectorized dagmars shall have encapsulated lens reflectors conforming to standard manufacturing practices. 706- 2.04 Jiggle Bars:
Types K and KY jiggle bars shall be concrete or ceramic, at the option of the contractor, and shall be shaped to conform to the details shown on the plans. The same type of jiggle bar shall be used throughout any one project. Jiggle bars shall be painted either white or yellow and shall be reflectorized, as shown on the plans. The color shall be uniform. The bottom surface of the jiggle bars shall be of a roughness comparable to at least that of fine grade sandpaper. The bottom surface shall not be grooved such that air will be trapped in the grooves when it is pressed into the ad hesive. TABLE OF CONTENTS INDEX 762
Concrete jiggle bars shall be made of Class B concrete conforming to the requirements of Section 1006 of the specifications.
Ceramic jiggle bars shall be made of a heat -fired vitreous base. The glazed surface shall not craze, spall or peel when tested in accordance with the requirements of ASTM C424 for one cycle at 250 pounds per square inch. The jiggle bar tiles shall have a compressive strength as follows when tested in accordance with the requirements of ASTM C773: Minimum average of five units 6,000 psi Individual minimum, one unit 5,000 psi 706- 2.05 Bituminous Adhesive: The bituminous adhesive for pavem ent markers shall be a hot -melt adhesive manufactured by an approved manufacturer. A list of approved manufacturers of bituminous adhesive is shown on the Department’s Approved Products List (APL). Copies of the most current version of the APL are available on the internet from the Arizona Transportation Research Center (ATRC), through its PRIDE program. 706- 3 Construction Requirements: The portion of the highway to which the markers are to be attached shall be free of dirt, existing painted lines, curing compound, grease, oil, moisture, loose or unsound layers and any other material which could adversely affect the bond of the adhesive. The method of cleaning the pavement surface and removal of detrimental material is subject to approval by the Engineer and shall include sweeping and the use of high-pressure air spray. On Portland cement concrete pavement and old asphaltic concrete pavements, cleaning shall be accomplished by sandblasting, followed by sweeping and/or air blowing. Newly placed asphaltic concrete pavement need not be sandblasted unless, in the opinion of the Engineer, the surface is contaminated with materials that would adversely affect the bond of the adhesive. The adhesive shall be placed uniformly on the cleaned pavement surface in an amount sufficient to result in complete coverage of the area of contact of the markers, with no voids present and with a slight excess after the markers have been placed. The markers shall be placed in position and pressure applied until firm contact is m ade with the pavement. The markers shall be protected against impact until the adhesive has set to the degree acceptable to the Engineer. TABLE OF CONTENTS INDEX