ITEM 643 POLYESTER PAVEMENT MARKING
643.01 Description
643.02 Materials
643.03 Equipment
643.04 Application
643.05 Basis of Payment
643.01 Description. This work consists of furnishing and applying polyester pavement markings according to Item 641, 740.01, 740.03, 740.09, and the additional requirements specified below.
643.02 Materials. Furnish materials from the Department’s Approved List conforming to:
Polyester Pavement Marking.................................. 740.03
Glass Beads, Type B.............................................. 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 Contractor to re-apply, at his expense, any markings using that sample. All other untested batches will become not approved materials and will either require testing or re-application.
Do not apply material that exceeded the manufacturer’s shelf life. Do not use glass beads that are wet.
643.03 Equipment. Use application equipment capable of mixing the polyester components in proportions recommended by the manufacturer and applying glass beads at the time of marking placement. Use equipment (striper) capable of applying polyester long-lines at the thickness specified for solid and broken lines while moving on the highway at a speed of not less than 7 miles per hour (11 km/h). Furnish a calibrated measuring device acceptable to the Engineer to measure the polyester resin in the striper tanks.
Equip all striping equipment with a Data Logging System (DLS) conforming to 641.04 for polyester resin only. Catalyst will be calculated as 2 percent of the resin used.
Furnish written documentation to the Engineer for the equipment’s operational capabilities from the equipment manufacturer. Include application speed with DLS report.
Furnish documentation that the application equipment, pump, paint guns and bead applicators are capable of applying the minimum wet millage (millimeters) and pounds (kilograms) of beads at not 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 a higher speed.
Furnish written documentation for the equipment’s operational capabilities from the equipment manufacturer.
643.04 Application. Apply polyester only when the pavement surface is clean and dry and the pavement and air temperature are above 50 °F (10 °C). Before any application, test and record the pavement surface temperature, air temperature and record the temperature of polyester at the point of application. Retest and record every 4 hours of operation. Demonstrate to the Engineer the testing devices on DLS are accurate and operational.
If project safety requirements require application below 50°F (10°C), obtain approval from the Engineer and apply only 740.02 Type 2 alkyd materials. Furnish alkyd paint manufacturer’s temperature and dry (no track) time recommendations. Apply paint and protect from traffic per alkyd paint manufacturer’s recommendations.
After sampling of resin is completed, transfer the entire contents of each material container to the striper tanks. Ensure that the polyester is thoroughly mixed at all times during application. Apply polyester (catalyst plus resin) uniformly to the pavement at the following rates:
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|
Gallons per Mile of Line |
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|
Width of Line (inches) |
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|
4 |
6 |
8 |
12 |
24 |
|
|
Solid Line |
16 |
24 |
32 |
48 |
96 |
|
Broken Line |
4 |
6 |
8 |
12 |
24 |
|
Dotted Line |
5 1/3 |
8 |
10 2/3 |
16 |
32 |
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Areas, Symbols, Words |
1 gallon per 100 square feet |
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Liter per Kilometer of Line |
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Width of Line (mm) |
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|
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 |
0.4 L/m2 |
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Do not dilute the material.
Apply glass beads to the uncured polyester in sufficient quantity so that the beads completely fill the polyester film from the film-pavement interface to the top surface of the film to the extent that there are loose beads on the surface of the uncured line. Apply the glass beads at a rate of at least 18 pounds (2.2 kg) of glass beads per gallon (L) of polyester applied in a manner that provides uniformly retroreflective lines.
If the applied polyester becomes tacky and causes marking discoloration and darkening, cease marking application until the Inspector agrees that the problem is corrected.
If any marking is in a tracking condition 45 minutes after application, cease marking application until the Inspector agrees that the problem is corrected.
Do not apply polyester pavement markings to new asphalt concrete until at least 2 weeks after the pavement is placed. Assure curing compound is removed from portland cement concrete pavements.
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 643.04.
Material applied without written approval of the
Engineer outside the
Furnish the Engineer a DLS report conforming to 641.04 for each day’s marking application no later than the following day.
643.05 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
643 Mile (Kilometer) Edge Line
643 Mile (Kilometer) Lane Line
643 Mile (Kilometer) Center Line
643 Foot (Meter) Channelizing Line
643 Foot (Meter) Stop Line
643 Foot (Meter) Crosswalk Line
643 Foot (Meter) Transverse/Diagonal Line
643 Foot (Meter) Curb Marking
643 Square
Foot
(Square Meter)
643 Each Handicap Symbol Marking
643 Each Railroad Symbol Marking
643 Each School Symbol Marking, ___ inch (___ mm)
643 Foot (Meter) Parking Lot Stall Marking
643 Each Lane Arrow
643 Each Word on Pavement, ___ inch (___ mm)
643 Foot (Meter) Dotted Line, ___ inch (___ mm)
643 Foot
or Square Foot Removal of Pavement Marking
(Meter or Square
Meter), or Each
643 Lump Sum Two-Way Radio Equipment