ITEM 645  PREFORMED PAVEMENT MARKING

645.01   Description
645.02   Materials
645.03   Application
645.04   Layout and Premarking
645.05   Basis of Payment

645.01  Description.  This work consists of furnishing and applying preformed pavement marking material according to Item 641, 740.05, 740.06, and the additional requirements specified below.

645.02  Materials.  Furnish materials from the Department’s Prequalified List conforming to the following:

645.03  Application.  Apply preformed markings to the pavement by means of a precoated adhesive on the back, or by an adhesive or activator furnished with the markings and used according to the manufacturer’s recommendations.  Form lines 12 inches (300 mm) wide or less by one piece; form lines wider than 12 inches (300 mm) by no more than two pieces.  Do not overlap individual pieces.  Do not allow a gap greater than 1/4 inch (6 mm) between pieces.

Do not use preformed markings that are subject to premature adhesion or contamination before placement.

Apply preformed markings according to the appropriate type of application as follows:

A.     Type A Marking Application.  Apply the preformed markings while the pavement surface temperature is at least 60 °F (16 °C).  Initially position the marking under light pressure, or use a hand operated light roller or mechanical applicator.  Once correctly located, hold the marking in position without delay by rolling.

If Type A preformed markings are specified to be inlaid on newly placed asphalt concrete, press the markings into the warm surface using a mechanical roller.  Proper application of inlaid markings requires that the asphalt concrete pavement surface have a temperature below the maximum temperature recommended for the preformed material or its adhesive backing.

B.     Type B and Type C Marking Application.  Apply the preformed markings according to the manufacturer’s recommendations.

645.04  Layout and Premarking.  In addition to the requirements specified in 641.06, place preformed auxiliary markings only on new pavement.

645.05  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: