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 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 have 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 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. The DLS shall measure the polyester
resin material component and glass beads 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.
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).
If
project safety requirements require marking application below 50°F (10°C),
obtain approval from the Engineer and apply cold weather traffic paint, Type
1A, according to Item 642 instead of the polyester.
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:
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 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 glass beads at a minimum rate of 16.5 pounds per 100
square feet (8 kg per 10 m2) 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 Engineer agrees that the problem
is corrected.
If
any marking is in a tracking condition 45 minutes after application, cease
marking application until the Engineer 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.
Replace
unsatisfactory markings according to 641.11.
Furnish
the Engineer daily, biweekly and final DLS reports according to 641.04.
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, ____ inch (_____ mm),
643
Mile (Kilometer)
Lane Line, ____ inch (_____ mm),
643
Mile (Kilometer) Center Line
643
Foot
(Meter)
Channelizing Line, ____ inch (_____ mm),
643
Foot
(Meter)
Stop Line
643
Foot
(Meter)
Yield Line
643
Foot
(Meter)
Crosswalk Line
643
Foot
(Meter)
Transverse/Diagonal Line
643
Foot (Meter)
Curb Marking
643
Square
Foot
Island Marking (Square Meter)
643
Each
Handicap Symbol Marking
643
Each
Railroad Symbol Marking
643
Each
School Symbol Marking, ___ inch (___ mm)
643
Each
Bicycle Lane Symbol Marking
643
Each
Shared Lane Marking
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