ITEM 642 TRAFFIC PAINT

642.01 Description

642.02 Materials

642.03 Equipment

642.04 Application

642.05 Basis of Payment

642.01 Description. This work consists of furnishing and applying alkyd or water-based traffic paint according to Item 641, 740.01, 740.02, 740.09, and the additional requirements specified below.

642.02 Materials. Furnish materials from the Department’s Approved List conforming to:

Traffic Paint............................................................ 740.02

Glass Beads, Type A.............................................. 740.09

The Engineer may obtain random samples from the application equipment. Furnish the manufacturer’s identification information for the sampled liquid materials. The Department will test the quality assurance sample for conformance to the manufacturer’s production ranges. Samples not meeting the manufacturer’s production ranges will require the Contactor to re-apply, at his expense, any markings using that sample. All other untested batches will become not approved and will either require testing or re-application.

Do not apply paints that exceeded the manufacturer’s shelf life. Do not use glass beads that are wet.

642.03 Equipment. Use equipment capable of applying the traffic paint as recommended by the manufacturer and applying glass beads at the time of line placement. Furnish a calibrated measuring device acceptable to the Engineer to measure the traffic paint in the striper tanks.

Equip all striping equipment with a Data Logging System (DLS) conforming to 641.04.

Furnish written documentation to the Engineer for the equipment’s operational capabilities from the equipment manufacturer.

Furnish documentation that the application equipment, pump, paint guns and bead applicators are capable of applying the minimum wet millage and pounds of beads at no more than 10 miles (16 km) per hour. Do not operate above 10 miles (16 km) per hour without documenting the equipment’s capability to operate at higher speed.

642.04 Application. Apply pavement markings only when the surface is clean and dry in accordance with the paint manufacturer’s written application instructions.

If any project safety requirements require application below 40°F (5°C), obtain approval from the Engineer and apply only pre-qualified alkyd type materials. Furnish alkyd paint manufacturer’s temperature and dry (no track) time recommendations. Apply paint and block from traffic tracking per alkyd paint manufacturer’s recommendations.

Keep the paint thoroughly mixed during application.

Apply 20 mil (0.51 mm) thick traffic paint Type 1 at the following rates:

	20 Mil Thickness Gallons per Mile of Line
	Width of Line (inches)
	4	6	8	12	24
Solid Line	22	33	44	66	132
Broken Line	5.5	8.25	11	16.5	33
Dotted Line	7.15	10.75	14.3	21.45	42.9
Areas, Symbols, Words	1.33 gallon per 100 square feet

	20 Mil Thickness Liter per Kilometer of Line
	Width of Line (mm)
	100	150	200	300	600
Solid Line	50	75	100	150	300
Broken Line	12.4	18.6	24.8	37.2	74.4
Dotted Line	16.4	24.6	32.8	49.2	98.4
Areas, Symbols, Words	0.53 L/m²

Apply 15 mil (0.38 mm) thick traffic paint Type 2 at the following rates:

	15 Mil Thickness Gallons per Mile of Line
	Width of Line (inches)
	4	6	8	12	24
Solid Line	16	24	32	48	96
Broken Line	4	6	8	12	24
Dotted Line	5.33	8	10.67	16	32
Areas, Symbols, Words	1 gallon per 100 square feet

	15 Mil Thickness Liter per Kilometer of Line
	Width of Line (mm)
	100	150	200	300	600
Solid Line	37	56	74	111	222
Broken Line	9.3	14	18.54	28	56
Dotted Line	12.3	18.5	25	37	74
Areas, Symbols, Words	0.41 L/m²

Increase the first application of traffic paint Type 2 on new asphalt pavement surfaces by 25 percent over the specified rate.

Do not dilute the paint. However, the Contractor may add spent traffic paint solvents, generated during performance of this work, to virgin traffic paint. If adding spent solvents, add them in a maximum ratio of 1:50 of spent solvents to virgin paint. Ensure that the maximum concentration of spent solvents in the striping equipment tanks is maximum 2 percent. Add spent solvents during the loading of the striping equipment.

Apply glass beads to the wet paint so that the beads are embedded and retained in the paint and uniformly cover the paint surface. Apply the glass beads at the rate of at least 12 pounds (1.4 kg) of glass beads per gallon (liter) of traffic paint Type 1 applied in a manner that provides uniformly retroreflective lines. Apply the glass beads at the rate of 8 pounds (0.9 kg) of glass beads per gallon (liter) of traffic paint Type 2 applied in a manner that provides uniformly retroreflective lines.

Ensure that the temperature of fast dry paint at the discharge point is within the range recommended by the paint manufacturer. Demonstrate test equipment that measures the temperature and check and document the temperature at least every 4 hours.

For markings found to be more than 20 percent deficient, reapply full dimensional pavement markings and marking materials and glass beads at the application rates specified in 642.04.

Material applied without written approval of the Engineer outside the temperature or application speed requirements will be considered unsatisfactory and will be replaced per 641.07 and 642.04.

Furnish the Engineer a DSL report conforming to 641.04 for each day’s marking application no later than the following day.

642.05 Basis of Payment. The Department will pay for accepted quantities at the contract prices, or prices adjusted according to 641.11, measured according to 641.12, with the provisions specified in 641.13, and as follows:

Item unit Description

642 Mile (Kilometer) Edge Line, Type ___

642 Mile (Kilometer) Lane Line, Type ___

642 Mile (Kilometer) Center Line, Type ___

642 Foot (Meter) Channelizing Line, Type ___

642 Foot (Meter) Stop Line, Type ___

642 Foot (Meter) Crosswalk Line, Type ___

642 Foot (Meter) Transverse/Diagonal Line, Type ____

642 Foot (Meter) Curb Marking, Type ___

642 Square Foot Island Marking, Type ___
(Square Meter)

642 Each Handicap Symbol Marking, Type ___

642 Each Railroad Symbol Marking, Type ___

642 Each School Symbol Marking, __ inch (___ mm),

Type ___

642 Foot (Meter) Parking Lot Stall Marking, Type ___

642 Each Lane Arrow, Type ___

642 Each Word on Pavement, ___ inch
(___ mm), Type ___

642 Foot (Meter) Dotted Line, ___ inch (___mm), Type ___

642             Foot or Square Foot        Removal of Pavement Marking
                       (Meter or Square
                       Meter), or Each

642 Lump Sum Two-Way Radio Equipment