492.1DESCRIPTION—This work is profile milling of existing asphalt pavement surface with parameters
to control surface tolerances in both longitudinal and transverse directions.
492.3CONSTRUCTION—
wide in one pass. Equip the milling machine with a built-in automatic grade control system to control the longitudinal profile and the transverse cross-slope. Provide longitudinal controls capable of operating from a longitudinal grade reference, including string line, ski 30 feet minimum, mobile string line 30 feet minimum, or matching shoe. Provide the transverse controls with an automatic system for controlling cross-slope at a given rate. Mount profiler cutters to the carrier to adjust and control them according to depth of cut and cross-slope. Longitudinal milling action may be produced either by a suitable carrier wheelbase or use of an automatic control system having an external reference. Produce either a variable or a constant cross-slope with cross- slop adjustments or automatic controls. Design, maintain, and operate milling cutters to produce a surface free from grooves, ridges, gouges, or other irregularities detrimental to the safe operation of vehicles in traffic routed onto the profiled surface. Suitable supplemental equipment or methods, approved by the Representative, may be used in small or confined areas and around utility facilities. Complete adjustment of utility facilities before the milling operation when pavement is not to be resurfaced. Repair or replace utility facilities that are damaged by the profiling operation to the satisfaction of the utility owner at no additional cost to the Department.
the specified pavement surface elevation or cross-slope with one or more passes over the designated area, operating the milling machine in automated mode. Remove milled material from the surface following each pass of the equipment. Before opening the completed area to traffic, thoroughly clean the surface of all loose material that would create a hazard, a nuisance, or would be redeposited into the surface texture. Maintain the milled surface free of all loose material and contaminants during milling and cleaning operations. Repair areas where sound pavement has been damaged by milling operations at no additional cost to the Department, in a manner satisfactory to the Representative. The repaired area must conform to the adjacent pavement in smoothness and durability. Do not allow traffic to drive on any milled surface for more than 6 calendar days. Place the first overlaying asphalt course within 7 calendar days from the start of the milling operation. Failure to overlay a milled section of roadway within 7 calendar days after it has been milled will constitute a failure to comply with a contract traffic control requirement for which work zone liquidated damages, as specified in Section 108.07(c), will be accessed. Work stoppages caused by the Department, Utilities, and documented weather delays will not count towards the 7 working days for calculating Work Zone Liquidated Damages. Maintain all milled surfaces and repair or replace any areas damaged due to the asphalt overlay not being placed within 7 calendar days of the milling operation methods accepted by the Representative at no additional cost to the Department. If the first course of the asphalt overlay is not placed on the same day of the milling operation, install ROUGH ROAD (W8 -8) signs according to Publication 212, Publication 213, and MUTCD 1/2 -mile in advance of the project and at a minimum of 1/2 -mile intervals throughout the project befor e the end of the day. Eliminate vertical edges around utilities and inlets wi thin all open travel lanes at the end of each day. If this is not feasible, install a BUMP (W8-1) sign in advance of the appurtenance, and co nsider a reduced regulatory speed limit sign. Install these signs at no additional cost to Department.
unsound pavement during profile milling operation will be designated by the Representative. Excavate to match depth of existing surface. Clean the areas of loose material, coat with Emulsified Asphalt Tack Coat (TACK), and fill with asphalt mixture of the same type. Level and compact the asphalt mixture to conform to the adjacent pavement.
surface at the edge of adjacent passes within 1/8 inches. Conform the cross -slope of the profiled surface to the specified cross-slope within 1/8 inch in 12 feet. Provide a positive cross slope, as shown in the plans, such that the pavement drains.
conditions will apply with regard to the disposition of milled material.
the Contractor, satisfactorily dispose of milled material immediately after milling.
material will be retained by the Department, deliver milled material to the designated stockpiling location immediately after milling. The proposal/contract will include a special provision that identifies where milled material i s to be stockpiled, as well as the approximate distance (miles) from the project site to the designated stockpiling location. Advance notification of a scheduled delivery of milled material to the designated stockpile is to be provided to the individual whose name and telephone number are listed in the special provision.
considered defective. Payment for defective work will be made at 50% of the Contract Unit Price (CUP) for the full-lane width of the defective area.
492.4MEASUREMENT AND PAYMENT—
The cost of delivering milled material to the designated stockpiling location is incidental to this item of work.
indicated or required:
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