2232Mill Pavement Surface

2232.1DESCRIPTION

This Work consists of removing the existing pavement by cold milling.

2232.2MATERIALS — BLANK

2232.3CONSTRUCTION REQUIREMENTS

A Equipment Mill the existing pavement with a power operated, self-propelled cold milling machine capable of removing concrete and bituminous Materials to the profile, cross-slope, grade, and elevation uniformly across the pavement surface as shown on the Plans. Use automatic controls to control grade, elevation, cross-slope, and profile. Use a machine with ski, matching shoe, or an independent grade control to reference the existing pavement and automatically establish Profile Grades along each edge of the machine within ±1/4 inch. B Operations Mill the pavement surface to the depth, width, grade, and cross -slope as shown on the Plans. Perform milling without tearing or gouging the underlying Material . Surface irregularities exceeding 1/2 inch under a 10 foot straightedge laid transversely and longitudinally after milling is complete are unacceptable. Reference the milling operation from an independent grade control in areas directed by the Engineer. Establish and maintain grade control as approved by the Engineer. Mill the entire pavement width to a flush surface at the end of each W ork period, when the pavement is open to traffic. If uncompleted operations result in a vertical or near vertical longitudinal face, reslope the longitudinal face to provide a taper, construct a temporary bituminous taper or provide protective measures, as approved by the Engineer. Taper transverse cutting faces at the end of each Work period where pavement is open to traffic. Construct temporary bituminous tapers at intersecting Streets, around utility appurtenances, and appropriated entrances during the milling operations, as directed by the Engineer. Mill areas inaccessible to the milling machine using other Equipment or methods as approved by the Engineer. The Contractor may recycle the surfacing removed by the milling operations and use on the Project in accordance with 3138, “Aggregate for Base and Surface Courses,” or 3139, “Graded Aggregate for Bituminous Mixtures,” or dispose of the millings outside the Right-of-way in accordance with 2104.3, “Removing Pavement and Miscellaneous Structures, Construction Requirements. ”

After milling to the depth shown on the Plans, sweep or vacuum clean the milled area with Equipment approved by the Engineer. Clean the milled area as approved by the Engineer. Dispose of debris from milling and cleaning operations outside of the Right-of-way in accordance with 2104.3, “Removing Pavement and Miscellaneous Structures, Construction Requirements, ” except as otherwise approved by the Engineer. Mill previously patched areas to the specified depth below the pavement surface that existed before placement of the previous patch, and not from the surface of the patch. Avoid disturbing or damaging existing drainage or utility Structures on the Project. Repair damage resulting from the milling operations at no additional cost to the Department. Keep the milled pavement surface free of all loose Materials and dust.

2232.4METHOD OF MEASUREMENT

The Engineer will measure pavement milling by the area of each type of surface removed . The Engineer will measure areas milled, based on actual finished dimensions of the W ork.

2232.5BASIS OF PAYMENT

The Contract Unit Price for pavement milling includes the cost of cleanup, and disposal operations. The cost of constructing a temporary milled taper and providing, placing, and removing temporary bituminous tapers is included in the Contract Unit Price for other relevant Contract Items. The Department will pay for mill pavement surface on the basis of the following schedule: Item No. Item Unit

2232.504 Mill Bituminous Surface (___”) square yard

4 Mill Concrete Surface (____”) square yard

Pavement Construction