Item 647 HEAT-FUSED PREFORMED THERMOPLASTIC PAVEMENT MARKING
647.05 Basis of Payment
647.01 Description. This work consists of furnishing and applying heat-fused preformed thermoplastic for use as auxiliary pavement markings according to Item 641, 740.01, 740.08 and the additional requirements specified below.
Heat fused preformed thermoplastic pavement marking material.................................. 740.08
1. Propane torch to heat the pavement and material according to 647.04.B.
2. Infrared thermometer to assure that both the pavement and the material are properly heated and do not exceed the manufacturer’s specified application temperature.
1. Propane torch for ensuring no moisture is present on the pavement and heating the material according to 647.04.C.
2. A thermometer is not required.
A. General. Apply the heat-fused preformed thermoplastic pavement marking material to clean, dry pavement surfaces according to the appropriate type unless otherwise directed by the manufacturer's recommendation. Apply primer sealer on portland cement concrete pavements for proper adhesion only if the manufacturer requires its use.
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.
B. Type A90 and Type A125 Material Application on Asphalt Concrete and Portland Cement Concrete Pavements. Uniformly pre-heat the pavement to 300 °F (149 °C) with a propane torch. Place the material on the warm surface as soon as practical, then uniformly post-heat to 400 °F (204 °C). Begin the post-heating process of material application as quickly as possible. The Contractor may have to extend post-heating on concrete having a high moisture content. Allow the material to cool naturally and solidify before exposing it to traffic.
Type A90 and A125 materials shall contain intermix beads throughout. Drop-on glass beads are not required unless using a non-surface beaded marking (i.e., for turn or combination arrows).
C. Type B90 and Type B125 Material Application on Asphalt Concrete and Portland Cement Concrete Pavements. Heat the pavement only to ensure no moisture is present. Place the material on the dry surface and then uniformly heat the material until it bubbles and changes color to off-white. Material must be able to be applied with no preheating of the pavement to a specified temperature and without the use of a thermometer. Allow the material to cool naturally and solidify before exposing it to traffic.
Type B90 and B125 material shall contain intermix glass beads throughout. Drop-on glass beads are not required unless using a non-surface beaded marking (i.e., for turn or combination arrows).
647.05 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
647 Foot (Meter) Channelizing Line, ____ inch (_____ mm), Type ___
647 Foot (Meter) Stop Line, Type ___
647 Foot (Meter) Yield Line, Type____
647 Foot (Meter) Crosswalk Line, Type ___
647 Foot (Meter) Transverse/Diagonal Line, Type ____
647 Each Handicap Symbol Marking, Type ___
647 Each Railroad Symbol Marking, Type ___
647 Each School Symbol Marking, ___ inch (___ mm), Type ___
647 Each Bicycle Lane Symbol Marking, Type____
647 Each Shared Lane Marking
647 Foot (Meter) Parking Lot Stall Marking, Type ___
647 Each Lane Arrow, Type ___
647 Each Word on a Pavement,
___ inch (___ mm), Type ___
647 Foot (Meter) Dotted Line, ___ inch (___ mm), Type ___
647 Each, Foot, Removal of Pavement Marking