1.5.3
Reflective Media Dispenser
The dispenser for applying the reflective media shall be attached to the
paint dispenser and shall operate automatically and simultaneously with the
applicator through the same control mechanism. The dispenser shall be
capable of adjustment and designed to provide uniform flow of reflective
media over the full length and width of the stripe at the rate of coverage
specified in paragraph APPLICATION, at all operating speeds of the
applicator to which it is attached.
1.5.4
Preformed Tape Application Equipment
Mechanical application equipment shall be used for the placement of
preformed marking tape. Mechanical application equipment shall be defined
as a mobile pavement marking machine specifically designed for use in
applying precoated, pressure-sensitive pavement marking tape of varying
widths, up to 300 mm 12 inches. The applicator shall be equipped with
rollers, or other suitable compactive device, to provide initial adhesion
of the preformed, pressure-sensitive marking tape with the pavement
surface. Additional hand-operated rollers shall be used as required to
properly seat the thermoplastic tape.
1.5.5
Surface Preparation Equipment
1.5.5.1
Sandblasting Equipment
Sandblasting equipment shall include an air compressor, hoses, and nozzles
of proper size and capacity as required for cleaning surfaces to be
painted. The compressor shall be capable of furnishing not less than 70.8
L/sec 150 cfm of air at a pressure of not less than 620 kPa 90 psi at each
nozzle used, and shall be equipped with traps that will maintain the
compressed air free of oil and water.
1.5.5.2
Waterblast Equipment
The water pressure shall be specified at 17.9 MPa 2600 psi at 60 degrees C
140 degrees F in order to adequately clean the surfaces to be marked.
1.5.6
Marking Removal Equipment
Equipment shall be mounted on rubber tires and shall be capable of removing
markings from the pavement without damaging the pavement surface or joint
sealant. Waterblasting equipment shall be capable of producing an
adjustable, pressurized stream of water. Sandblasting equipment shall
include an air compressor, hoses, and nozzles. The compressor shall be
equipped with traps to maintain the air free of oil and water.
1.5.6.1
Shotblasting Equipment
Shotblasting equipment shall be capable of producing an adjustable depth of
removal of marking and pavement. Each unit shall be self-cleaning and
self-contained, shall be able to confine dust and debris from the
operation, and shall be capable of recycling the abrasive for reuse.
1.5.6.2
Chemical Equipment
Chemical equipment shall be capable of application and removal of chemicals
from the pavement surface, and shall leave only non-toxic biodegradeable
residue.
SECTION 02763A
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