Article 1 — Description
Eliminate existing pavement markings and raised pavement markers (RPMs).
Article 2 — Materials
Furnish surface treatment materials in accordance with the following Items . Item 300, “Asphalts, Oils, and Emulsions” Item 302, “Aggregates for Surface Treatments” Item 315, “Fog Seal” Item 316, “Seal Coat” Use approved patching materials for repairing damaged surfaces. Use a commercial abrasive blasting medium capable of producing the specified surface cleanliness. Use potable water when water is required.
Article 3 — Equipment
Furnish and maintain equipment in good working condition. Use moisture and oil traps in air compression equipment to remove all contaminants from the blasting air and prevent the deposition of moisture, oil, or other contaminants on the roadway surface.
Article 4 — Construction
Eliminate existing pavement markings and markers on both concrete and asphaltic surfaces such that color and texture contrast of the removed area and surrounding pavement surface will be held to a minimum. Remove all markings and markers with minimal damage to the roadway to the satisfaction of the Engineer. Repair damage to asphal tic surfaces such as spalling and shelling greater than 1/ 8 in. deep resulting from the removal of pavement markings and markers. Dispose of markers in conformance with federal, state, and local regulations. Use any of the following methods unless otherwise shown on the plans . Refer to the Pavement Marking Handbook for additional information on removal types and best practices.
4.1 Surface Treatment Method . Apply surface treatment material at the rates shown on the plans, or as
directed. Place a surface treatme nt at least 2 ft. wide to cover the existing marking. Place a surface treatment, thin overlay, or microsurfacing at least one lane in width in areas where directional changes of traffic are involved or other areas as directed.
4.2 Burn Method. Use an approved burning method. For thermoplastic pavement markings or prefabricated
pavement markings, heat may be applied to remove the bulk of the marking material before blast cleaning. When using heat, avoid spalling pavement surfaces. Ensure the burning heads are not left in one place too long to prevent pavement damage. Sweeping or light blast cleaning may be used to remove minor residue.
4.3 Blasting Method. Use a blasting method such as high- pressure water blasting, abrasive blasting, water
abrasive blasting, shot blasting, slurry blasting, water- injected abrasive blasting, or brush blasting as approved. Use high- pressure water blasting for removal of pavement markings for lane shifts on concrete surfaces. 921 4.4. Mechanical Method . Use any mechanical method except grinding. Do not use flail milling on grooved concrete or porous asphalt.
4.5 Corrective Actions. Whenever removed markings on asphalt surfaces continue to simulate pavement
markings to an extent determined by the Engineer to cause driver confusion, apply a fog seal or slurry at least 2 ft. wide over the area where pavement markings were removed as approved.
Article 5 — Measurement
This Item will be measured by each word, symbol, or shape eliminated; by the foot of marking eliminated; or by any other unit shown on the plans. This is a plans quantity measurement Item. The quantity to be paid is the quantity shown in the proposal , unless modified by Article 9.2., “Plans Quantity Measurement.” Additional measurements or calculations will be made if adjustments of quantities are required.
Article 6 — Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Eliminating Existing Pavement Markings and Markers” of the type and width as applicable. This price is full compensation for the elimination method used and materials, equipment, tools, labor, and incidentals. Removal of RPMs will not be paid for directly , but will be subsidiary to pertinent I tems.