4-28 403.206 Hot Mix Asphalt, 25 mm Nominal Maximum Size Ton 403.207 Hot Mix Asphalt, 19.0 mm Nominal Maximum Size Ton 403.2071 Hot Mix Asphalt , 19.0 mm Nominal Maximum Size (Polyme r Modified) Ton 403.2072 Asphalt Rich Hot Mix Asphalt, 19.0 mm Nominal Maximum Size (Asphalt Rich Base and Intermediate course) Ton 403.208 Hot Mix Asphalt, 12.5 mm Nominal Maximum Size Ton 403.2081 Hot Mix Asphalt - 12.5 mm Nominal Maximum Size (Polyme r Modified) Ton 403.209 Hot Mix Asphalt, 9.5 mm Nominal Maximum Size (sidewalks , drives, islands & incidentals) Ton 403.210 Hot Mix Asphalt, 9.5 mm Nominal Maximum Size Ton 403.2101 Hot Mix Asphalt, 9.5 mm Nominal Maximum Size (Polymer Modified) Ton 403.2102 Asphalt Rich Hot Mix Asphalt, 9.5 mm Nominal Maximum S ize (Asphalt Rich Intermediate course) Ton 403.2104 Hot Mix Asphalt, 9.5 mm Nominal Maximum Size ( Thin Lift Surface Treatment ) Ton 403.211 Hot Mix Asphalt, 9.5 mm Nominal Maximum Size (Shimming) Ton 403.2111 Hot Mix Asphalt, 9.5 mm Nominal Maximum Size (Shimming , Polymer Modified)) Ton 403.212 Hot Mix Asphalt, 4.75 mm Nominal Maximum Size Ton 403.213 Hot Mix Asphalt, 12.5 mm Nominal Maximum Size (Base and Intermediate Base course) Ton 403.2131 Hot Mix Asphalt, 12.5 mm Nominal Maximum Size (Base an d Intermediate Base course, Polymer Modified) Ton 403.2132 Asphalt Rich Hot Mix Asphalt, 12.5 mm Nominal Maximum Size (Base and Intermediate Base course) Ton 403.214 Hot Mix Asphalt, 4.75 Nominal Maximum Size (5/8” Surfac e Treatment) Ton SECTION 404 - 408 VACANT SECTION 409 - BITUMINOUS TACK COAT
409.01 Description This work consists of furnishing and apply ing one uniform
application of liquid bituminous material on an approved surfac e in accordance with these specifications and in reasonably close conformity with the line s shown on the plans or established.
409.02 Bituminous Material The type and grade of bituminous m aterial will be
specified in the contract. The bituminous material shall meet the applicable requirements of Section 702 - Bituminous Materials. The bituminous material may be condition ally accepted at the source. 4-29
409.04 Weather Limitations Bituminous material shall not be ap plied on a wet or frozen
surface, or when weather conditions are otherwise unfavorable t o proper construction procedures. Unless otherwise specified in the contract, the use of rapid se t emulsions shall be required after sunset or before sunrise, when the atmospheric t emperature is below 50°F but above 40°F in a shaded area at the job site.
409.05 Equipment The Contractor shall provide necessary equip ment to properly
and uniformly apply the bituminous material. All distributors shall be equipped with accurate volume measuri ng devices, or a calibrated tank and measuring stick, thermometer for measuring temperatures of tank contents, power unit for the pump, capable of full circulation, and able to heat the contents to application temperatures. Approved fog type nozzles will be required. Truck mounted distributors will be required for use on all road way sections considered as traveled way, ramps, side roads and shoulders. Spray bars on truck mounted distributors shall be adjustable laterally and vertically. Truck mounted distributors sh all be designed, equipped, mainta ined and operated so that bituminous material at constant temperature may be applied uniformly on variable widths of surface up to 5 ft at readily determined and controll ed rates from 0.01 to 0.5 gal/yd², with uniform pressure and with an allowable variation from any specified rate not to exceed 0.01 gal/yd². In areas not accessible to a tru ck mounted distributors, or if project conditions warrant, the Department may allow the use of trailer mounted pressurized tank distributors equipped with pressurized spray bars. Spray nozzles, tank pressure, and travel speed shall be adjusted to achieve proper application rate and coverage. All liquid bituminous material bulk delivery vehicles, truck m ounted distributors, or pressurized tank distributors shall be equipped with an accepta ble sampling valve. On bulk delivery vehicles the valve shall be located in an acce ssible area in the lower half of the front or rear bulkhead. The valve shall be similar ly located on distributors except that it may be installed in a circulating line having a rising flow.
409.06 Preparation of Surface before application of the bitumi nous tack coat the surface
shall be thoroughly cleaned of all loose and objectionable mate rial. Preparation of the surface shall be considered incidental to the contract.
409.07 Application of Bituminous Material Bituminous material shall be applied by
a pressure distributor in a uniform, continuous spread over the area to be treated and within