962WATERBORNE PAVEMENT MARKINGS

962.1DESCRIPTION—This work is the furnishing and application of waterborne pavement markings, of

the type and color indicated.

962.2MATERIAL—

Section 106.03(b)3.

962.3CONSTRUCTION—

operations. In addition, provide the Inspector -in-Charge with the manufacturer’s instruction for the installation of the materials, application temperatures, proper mixing techn iques, and any other data to ensure the material is being properly installed.

• Capable of simultaneously applying two parallel lines of the width indicated in solid or broken patterns or various combinations thereof;

• Capable of automatically dispensing glass beads onto the painted surface, at the required application rate, by the pressurized gun method; and

• Equipped with a measuring device, which automatically and continuously measures the length of each line placed, to the nearest foot.

items. Do not apply with hand brushes or rollers. Glass beads may be hand-applied.

are 12 mils ± 1 mil.

• Line Measuring Device. Calibrate automatic line length gauges to maintain a tolerance of ± 25 feet per mile.

• Cycle Length/Line Timer . Calibrate cycle length in a tolerance of 6 inches per 40 feet; calibrate line length to maintain a tolerance of 3 inches per 10 feet.

• Bead Guns. Calibrate to dispense glass beads at the specified rate. Check by dispensing glass beads into a gallon container for a predetermined fixed period of time. Verify the weight of glass beads.

• Paint Guns. Calibrate to simultaneously apply the paint at the uniform rates specified with an allowable tolerance of 1 mil and with an allowable width tolerance of 1/4 inch.

applied. Remove all surface treatment, laitance, curing compound, or any contaminants that would hinder adhesion. Clear any loose dirt and other debris from the area to be painted with compressed air. Surface preparation is incidental to the application of waterborne pavement markings, except for the removal of pavement markings which is performed and paid for under Section 963. Identify the location of t he final pavement markings by applying spots on the pavement at 40 -foot intervals. The Inspector -in-Charge will approve the locations.

of 50F and a maximum relative humidity of 80%. Confirm the proper atmospheric and pavement surface conditions with the Inspector-in-Charge.

and be track-free from vehicular traffic. Follow the manufacturer’s recommendations or use a minimum of 30 minutes. Use barrier cones to protect markings that do not dry in less than 2 minutes on a roadway where traffic is maintained. Repaint marked or damaged areas, as directed.

Avoid placing markings on longitudinal pavement joints and seams. Where existing centerlines are visible and properly located, apply directly over the existing pattern. Where centerlines do not exist or existing centerlines are improperly located, apply at the correct location, as determined by the Inspector-in-Charge. Remove the improperly located existing markings, as specified in Section 963.3. Divide the roadway on two -lane roadways. However, if a portion of the roadway on either or both sides is to be used for parking, then divide the traveled way.

shoulder.

for white and 165 mcd/m2/lux for yellow. Under the direction and supervision of the Representative, measure with a 30-meter geometry retroreflectometer conforming to ASTM E1710 within 21 days after installation in accordance with PTM No. 431.

which after application and drying, the Inspector-in-Charge determines to be defective. Complete this work at no additional cost to the Department. Major types of defective work and method of repair include the following:

• Inadequate retroreflectivity, glass bead coverage or retention. Restripe over defective marking.

• Insufficient thickness or line width, uneven cross -section, p oor adhesion, or delaminating. Remove defective markings as specified in Section 963.3 and clean pavement surface, including 1 foot beyond each end of the affected area. Remove loose particles and debris with compressed air. Restripe the marking on the cleaned surface as specified in this specification.

adhesion resulting from defective materials or method of application in accordance with Section 107.16(b) for a period of 90 days from the date of acceptance.

962.4MEASUREMENT AND PAYMENT—