855COATINGS, PAINTS, ENAMELS, AND VARNISHES FOR METAL AND WOOD STRUCTURES

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brown color matching Federal Standard 595 Chip 30045 unless otherwise specified. High solids aluminum mastic coatings will not be required to be colored, unless otherwise specified.

855.06Timber and Wood Paints

The following primer, second, and third coat paints shall meet the production specification indicated below. Unpainted work and old painted surfaces in poor condition shall be painted with one coat of primer FSS TT-P-25. These paints have different uses according to the area in which they are used and whether they are to be tested or not.

855.07Primer (Wood)

FSS TT-P-25.

855.08Outside White

AASHTO M 70, Type 2.

855.09Outside Black

FSS TT-E-489. Intended for the top or finish coat on previously primed wood or metal.

855.10Paint For Concrete and Masonry

FSS TT-P-24. Type I - White only. Type II - Tint-base-white for tinting. Primarily intended to be used as a primer and finish coat on outside surfaces. It can be used inside over suitable primed concrete, brick, stucco, and similar surfaces except floors. The dried coat is an eggshell color.

855.11Paint For Masonry

FSS TT-P-19. Acrylic Emulsion Type, for exterior use.

855.12Olive-Drab (Exterior)

FSS TT-P-81.

855.13Green Exterior Paint

FSS TT-E-489.

855.14Enamel (Exterior)

FSS TT-E-489. Class A - Air-drying. Class B - Baking. This enamel gives a high-gloss finish to be used over previously primed smooth wood or metal surfaces. Color selection is wide. It is suitable for signs and automotive equipment.

855.15Zinc Coating for Galvanization and Coating Repair

The zinc coating used for the repair of damaged galvanization and the repair of zinc coatings shall be one of the coatings given under the classification "Zinc-Rich Coating for Repairing Galvanized Items or Zinc Coatings" shown in List III-1 "Coating Systems for Structural Steel."

855.16Asphalt Varnish

FSS-TT-V-51.

855.17Shellac Varnish

FSS TT-S-300.

855.18Spar Varnish

FSS TT-V-121. TRAFFIC MARKING MATERIALS 737

TRAFFIC MARKING MATERIALS

856.01Acceptance Program for Traffic Marking Materials

The guidelines for the evaluation and acceptance of traffic marking materials are given in the procedure ALDOT-420 "Acceptance Program for Traffic Marking Materials". These guidelines shall be followed in furnishing traffic marking materials.

856.02Packaging and Labeling of Containers

Traffic marking materials shall be shipped in containers that are plainly marked with the weight in pounds per gallon {kilograms per liter}, the volume in gallons {liters}, the color, user information, date of manufacture, lot and batch number. Each batch shall have a unique number. A statement of the percentage composition of the pigment, the proportion of pigment to vehicle, and the name and address of the manufacturer shall also be shown. The label shall contain any instructions for special handling or precautions for use of the material that are recommended by the manufacturer. Containers with inadequate identification and marking will not be accepted for use. The date of manufacture and the shelf life shall be shown for materials that have a shelf life. Preformed thermoplastic materials and permanent tape products shall be marked with content, color, date of manufacture and lot number.

856.03Color and Luminance Factor

The materials for pavement stripe, markings and legends shall meet the performance requirements given in ASTM D 6628 as tested in accordance with the requirements given in ASTM E 1349 with the instrument set to read x, y and Y coordinates with 45 degree/0 degree by-directional geometry, observer angle 2 degrees, and illuminant D65 with the exception of the following: The initial daytime chromaticity for yellow materials shall fall within the box created by the following coordinates: Initial Daytime Chromaticity Coordinates (Corner Points) 1 2 3 4 X 0.498 0.557 0.479 0.438 Y 0.412 0.442 0.520 0.412 The initial daytime chromaticity for white materials shall fall within the box created by the following coordinates: Initial Daytime Chromaticity Coordinates (Corner Points) 1 2 3 4 X 0.330 0.368 0.340 0.274 Y 0.300 0.366 0.393 0.329 White and yellow materials shall meet the following luminance factor requirements:  White: Daylight luminance factor at 45 degrees/0 degrees - 50 % minimum;  Yellow: Daylight luminance factor at 45 degrees/0 degrees – 35 % minimum.

856.04Environmental Requirements

All yellow materials using lead chromate pigments shall meet the criteria of non-hazardous waste as defined by 40 CFR 261.24 when tested in accordance with EPA Method 1311, Toxicity Characteristics Leaching Procedures (TCLP). The striping and marking material, upon preparation and installation, shall not exude fumes which are toxic, or detrimental to persons or property. All material using lead free pigments shall NOT contain either lead or other Resource Conservation and Recovery Act (RCRA) materials, in excess of the standard defined by EPA Method 3050 and 6010.

856.05Glass Beads

Glass Beads shall meet the requirements given in AASHTO M 247 and shall not contain greater than 200 ppm (total) for arsenic, 200 ppm (total) for antimony, and 200 ppm (total) for lead when tested according to US EPA Method 3052 and 6010. The manufacturer shall provide independent certified test results that the glass beads meet these requirements. Type 1, 3 and 4 glass beads used for drop on beads shall be coated with a bead coating that is compatible with the traffic marking material to which the TRAFFIC MARKING MATERIALS 738

glass beads will be applied and will provide adequate moisture proofing, increased adhesion, and optimum embedment of the glass beads. Beads used in the intermix (premixed with paint, thermoplastic or other striping materials) are not required to be coated. Glass beads shall meet the gradations shown in the following table. GRADATIONS OF GLASS BEADS, % PASSING DESIGNATED SIEVE Sieve Size * Type of Gradation Type 1 Type 3 Type 4 3M "Reflective Elements" S series 50 % Type 1 and 50 % Type 3 Intermixed 50 % Type 1, 37.5 % Type 3 and 12.5 % 3M "Reflective Elements" Intermixed 10 100 100 100 12 100 95 - 100 85 – 100 100 14 95 - 100 80 - 95 70 - 96 95 – 100 95-100 16 100 80 - 95 10 - 40 50 - 90 85 – 100 85-100 18 10 - 40 0 - 5 5 - 60 55 – 75 50-75 20 95 - 100 0 - 5 0 - 2 0 - 25 40 – 60 45-55 25 0 - 2 40 - 60 30 75 - 95 0 - 7 35 – 55 35-50 50 15 - 35 5 – 25 5-20 80 100 0 - 5 0 - 5 0-5 * Sieve analysis in accordance with the requirements given in ASTM D 1214

856.06Class 1 Paint

Class 1 paint shall be one of the materials shown on List V-4, Permanent Traffic Marking Materials. List V-4 is in the Department’s Manual, “Materials, Sources and Devices with Special Acceptance Requirements”. Manufacturers of Class 1 paint shall participate in ALDOT-420, “Acceptance Program for Traffic Marking Materials”.

856.07Class 1H High Build Paint

Class 1H paint shall not be used after the expiration of the shelf life. The paint shall be easily stirred and mixed to a uniform consistency prior to use. Manufacturers of Class 1H paint shall participate in ALDOT-420, “Acceptance Program for Traffic Marking Materials”. Class 1H High Build Paint shall meet the following requirements. TRAFFIC MARKING MATERIALS 739

PHYSICAL AND PERFORMANCE REQUIREMENTS FOR HIGH BUILD TRAFFIC PAINT PROPERTY VALUE TEST METHOD Acrylic Resin 100 % Rohm & Haas Rhoplex Fastrack HD-21A emulsion with 48.5 – 49.5 % solids content, or Dow DT 400NA acrylic emulsion with 49.5 – 51.5 % solids content, or an approved equal. ASTM D 2743 Infrared Spectral Analysis Nonvolatiles in Vehicle 42 % Minimum by Weight ASTM D 215 No Track Time Maximum of 10 minutes ASTM D 711 Volatile Organic Content Maximum of 1.25 Pounds per Gallon ASTM D 3960 Pigment Content Minimum of 55% by Weight Maximum of 62% by Weight ASTM D 3723 Total Solids Content Minimum of 73 % by Weight Maximum of 79 % by Weight ASTM D 2369 White Pigment Content, Rutile Titanium Dioxide Minimum of 1.0 Pound per Gallon ASTM D 476 Yellow Pigment Content, Hansa Yellow (11-2400) % minimum per manufacturer - Viscosity @ 77ºF (25ºC) Kreb Units 78 – 95 ASTM D 562 Density in Pounds per Gallon White – 13.7 Minimum Yellow – 13.1 Minimum ASTM D 1475 Scrub Resistance Pass Minimum 300 cycles ASTM D-2486 PH 9.6 Minimum ASTM E 70 Daylight Reflectance % White – 80 Minimum Yellow – 50 Minimum ASTM E 1349

856.08Class 2 and Class 2T Spray Applied Thermoplastic

Thermoplastic shall be alkyd based materials. Manufacturers of Class 2 and Class 2T Thermoplastic shall participate in ALDOT-420, "Acceptance Program for Traffic Marking Materials". Reflective glass beads shall be mixed into the thermoplastic as a part of the manufacturing process. The intermixed glass beads shall be either 50 % Type 1 and 50 % Type 3 beads or 50% Type 1, 37.5 % Type 3, and 12.5 % 3M "Reflective Elements". The pigment, glass beads and filler shall be well dispersed in the resin. The composition of Class 2 and Class 2T thermoplastic material shall be in accordance with the following. TRAFFIC MARKING MATERIALS 740

COMPOSITION OF CLASS 2 and CLASS 2T THERMOPLASTIC (% BY WEIGHT) COMPOSITION VALUE FOR WHITE VALUE FOR YELLOW (Lead Free) VALUE FOR YELLOW (Leaded) TEST METHOD Binder 20.0 % minimum 20.0 % minimum 20.0 % minimum AASHTO T 250 White Pigment TiO2, Type II Rutile 10.0 % minimum - 1.5 % minimum ASTM D 476 Glass Beads

Yellow Pigment, Lead Chromate - N/A 5.0 % minimum * AASHTO T 250 Yellow Pigment, Organic Pigment Yellow 83 - % minimum per manufacturer ** N/A - Calcium Carbonate and Inert Filler (-200 mesh {-75 µm} sieve) 30.0 % maximum 37.5 % maximum 33.5 % maximum ASTM D 1199 * Note: For yellow leaded thermoplastic markings the pigment shall be silica encapsulated lead chromate yellow, containing a minimum of 42 % lead. ** Note: For yellow lead free markings the pigment shall be an organic pigment yellow 83. The lead free yellow thermoplastic material shall contain no more than 100 ppm of lead, cadmium, or hexavalent chromium.

The physical requirements for the thermoplastic shall be in accordance with the following. PHYSICAL REQUIREMENTS OF CLASS 2 and CLASS 2T THERMOPLASTIC (% BY WEIGHT) PROPERTY MAXIMUM MINIMUM TEST METHOD Water Absorption 0.5 % - ASTM D 570 Softening Point - 195 ºF {90 ºC} ASTM D 36 Low Temperature Stress Resistance - Pass AASHTO T 250 Specific Gravity 2.3 1.9 ASTM D 792 Indentation Resistance 75 40 ASTM D 2240* Shore Durometer, A2 Impact Resistance - 1.0 N·m ASTM D 256, Method A Flash Point - 475 ºF {245 ºC} ASTM D 92 *The durometer and panel shall be at 110 ºF {45ºC} with a 4.4 lb {2.0 kg} load applied. Instrument measurement shall be taken after 15 seconds.

856.09Preformed Thermoplastic

Preformed Thermoplastic shall be alkyd based materials. Manufacturers of Class 2 Preformed Thermoplastic shall participate in ALDOT-420, "Acceptance Program for Traffic Marking Materials". Preformed Thermoplastic shall conform to all physical and composition requirements of Class 2 and 2T Thermoplastic with the exception that preformed Thermoplastic shall contain 30% intermix glass beads.