644 Thermoplastic Pavement Marking

1.        Material Type, 740.04

2.        Glass beads, 740.09 Type C

3.        Application of Thermoplastic, Item 644

a.        Thermoplastic shall be applied when the pavement surface and the ambient air temperature are 50 F (10 C) and rising for pavements less than a year old.

                                                               i.      At the end of the construction season if the surface temperature is 50 F (10 C) or less, apply Traffic Paint Type 2.

b.        Thermoplastic shall be applied when the pavement surface and the ambient air temperature are 70 F (21 C) and rising for pavements one year or older.

c.        Temperature of thermoplastic at the point of application shall be at least 400 F (204 C) and not more than 440 F (227 C).

d.        Glass beads, 740.09 Type C shall be applied at the rate of 12 pounds per 100 square feet (6kg per 10 square meters) .

e.        Thermoplastic material shall be applied at a thickness of 125 mils(3.2 mm)

                                                               i.      . Use an applicator that has a shoe that rides on the pavements and extrudes the thermoplastic.

f.         Thermoplastic shall be applied at the rate of 2340 pounds per mile (650 kg per km) of 4 inch (100 mm) line and / or at 133 pounds per 100 square feet (650 kg per square meter).

 

Documentation Requirements - 644 Thermoplastic Pavement Marking

1.        Ambient air temperature, type, and condition of existing pavement. Also pavement temperature

a.        Temperature requirements are outlined in 644.04

2.        Location and/or stationing where work performed

3.        Amount of thermoplastic and beads required and used. Thermoplastic pavement marking 740.04, glass beads Type C 740.09

4.        Location and/or stationing where work performed

5.        Measure in appropriate unit and turn in for pay

6.        Use form CA-D-3A to document information