ITEM 642  TRAFFIC PAINT

642.01  Description

642.02  Materials

642.03  Equipment

642.04  Application

642.05  Basis of Payment

 

642.01  DescriptionThis work consists of furnishing and applying fast dry water-based traffic paint or fast dry water-based traffic paint for cold weather applications according to Item 641, 740.01, 740.02, 740.09, and the additional requirements specified below.

642.02  MaterialsFurnish materials  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 have exceeded the manufacturer’s shelf life.  Do not use glass beads that are wet.

642.03  EquipmentUse 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 for center line, lane line and edge line markings with a computerized Data Logging System (DLS) conforming to 641.04 when the length of marking exceeds 0.5 miles (0.8 km) of continuous line equivalent.

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

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

If application is required when air and pavement temperatures are between 35 °F (2 °C) and 50 °F (10 °C)  obtain approval from the Engineer and apply only pre-qualified  Type 1A cold weather traffic paint materials.  Apply traffic paint according to the manufacturer’s recommendations and protect line from tracking.

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

Line Width (inch)

4

6

8

12

24

Gallon per Mile of Line

Solid Line

22

33

44

66

132

Broken Line

5.5

8.25

11

16.5

33

Dotted Line

5.5

8.25

11

16.5

33

Areas, Symbols, Words

1.25 gallon per 100 square feet

 

0.51 mm Thickness

Line Width (mm)

100

150

200

300

600

Liter per Kilometer of Line

Solid Line

50

75

100

150

300

Broken Line

12.5

19

25

38

75

Dotted Line

12.5

19

25

38

75

Areas, Symbols, Words

0.51 L/m²

 

Apply 15 mil (0.38 mm) thick traffic paint Type 1A at the following rates:

15 Mil Thickness

Line Width (inch)

4

6

8

12

24

Gallon per Mile of Line

Solid Line

16

24

32

48

96

Broken Line

4

6

8

12

24

Dotted Line

4

6

8

12

24

Areas, Symbols, Words

0.94 gallon per 100 square feet

 

0.38 mm Thickness

Line Width (mm)

100

150

200

300

600

Liter per Kilometer of Line

Solid Line

37

56

74

111

222

Broken Line

9.3

14

18.6

28

56

Dotted Line

9.3

14

18.6

28

56

Areas, Symbols, Words

0.38 L/m²

 

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 provide uniform retroreflectivity in the paint surface.  Apply glass beads at a minimum rate of 15 pounds per 100 square feet (7.3 kg per 10 m2) for Type 1 traffic paint.  Apply glass beads at a minimum rate of 8.0 pounds per 100 square feet (3.9 kg per 10 m2) for  Type 1A traffic paint. 

Ensure temperature of the paint at the discharge point is within the range recommended by paint manufacturer. 

Replace unsatisfactory markings according to 641.11.

Furnish the Engineer daily, biweekly and final DLS reports according to 641.04

Perform traffic control operations for all 642 pavement markings according to 614.12 and MT-99.20M, but provide for center line, edge line, lane line and channelizing line traffic control equipment according to MT-99.20M equipment requirements for center line, longer than 2 minute dry.

Payment for this work shall be included in the 642 price per mile for Center Line, Edge Line and Lane Line and the 642 price per foot for channelizing Line.

642.05  Basis of PaymentThe 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, ____ inch (_____ mm), Type ___

642             Mile (Kilometer)              Lane Line, ____ inch (_____ mm), Type __

642               Mile (Kilometer)                     Center Line, Type ___

642             Foot (Meter)                    Channelizing Line,  ____ inch (_____ mm), Type ___

642               Foot (Meter)                            Stop Line, Type ___

642             Foot (Meter)                    Yield 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             Each                                Bicycle Lane Symbol Marking, Type____

642             Each                                Shared Lane Marking, 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