GENERAL REQUIREMENTS FOR SURFACES 401.03
401.01 Description
This work consists of all types of surface construction.
401.02 Materials
Provide materials for surface construction in accordance with the relevant section or sections of Chapter 700, “Materials.”
401.03 Equipment
A.Distributors and Supply Tanks Provide distributors and supply tanks capable of uniformly applying bituminous material in accordance with the following: At the temperatures specified in the relevant specification sections; On variable widths of surface not to exceed 26 ft [7.8 m]; At rates from 0.010 gal/y d² to 1.000 gal/yd² [0.045 L/m² to 4.525 L/m²]; and With constant pressure and uniform temperature. Ensure the distributor can apply material to vertical faces of asphalt pavement at the joints between paving operations. Prevent variation that exceeds the specified application rate by more than 0.01 gal/yd² [0.045 L/m²]. Provide a distributor equipped with the following: A tachometer, Pressure gauges, Volume -metering devices or a calibrated tank, A thermometer for measuring temperatures of tank contents, A power unit for the pump, Full circulation spray bars adjustable vertically and laterally, A positive shut -off valve, and Fittings that prevent bituminous material from dripping. Frequently check and adjust the angle of the spray nozzles and the height o f the spray bar to ensure uniform distribution of the bituminous material. The Department will not allow drilling, clogging, or streaking the bituminous material. If any of these conditions occur, stop the operation and correct the problems creating thes e conditions before resuming distribution. Check the rate and uniformity of distribution if directed by the Resident Engineer. Provide supply tanks in accordance with AASHTO M 156, Section 3.
401.04 General Req Uirements for Surfaces
B.Compactors Provide rollers of the following types: Vibratory steel -wheel, Non -vibratory steel -wheel, Pneumatic tire, or A combination of the three types. Provide rollers in good condition, capable of reversing without backlash, and operating at speeds that do not displace the bituminous mixture. Equip vibratory roll ers with working amplitude controls or frequency controls designed specifically for the compaction of the specified bituminous material. Use rollers of a type, number, and weight to complete the compaction of the bituminous material before its temperature drops below the specified minimum. Do not use equipment that crushes the aggregate in the bituminous material.
401.04 Construction Methods
A.Tolerances Provide the required surface construction in accordance with the following:
1.Surface Elevation and S moothness Finish the surface elevations for new pavement construction and overlays within ½ in [13 mm] of the elevations shown on the Plans. If the Plans do not show the elevations for overlays, provide a finished surface in accordance with the surface smoothness tolerances. Ensure the surface smoothness is within ⅛ in in 10 ft [3 mm in 3 m]. Test for surface smoothness by placing a straightedge between two contacts on the finished surface and measuring the distance from the surface to the straightedge .
2.Width Finish surfaces to the minimum width shown on the Plans.
B.Corrections Correct material dimensions that exceed the specified surface tolerance using methods approved by the Resident Engineer only, at no additional cost to the Department.
C.Surface Protection Submit a plan to the Resident Engineer to protect the pavement from damage by the paving operations before starting paving operations. If paving operations spall, crack, chip, rut, or deface the pavement, repair the pavement at no addition al cost to the Department. TRAFFIC -BOUND SURFACE COURSE 402.05
401.05 Method of Measuremen T — Vacant
401.06 Basis of Payment — Vacant
SECTION 402 TRAFFIC -BOUND SURFACE COURSE
402.01 Description
This work consists of constructing a surface course of hard and durable particles of sand, gravel, mine chats, crushed stone, or disintegrated granite and placing the surface course material on a prepared subgrade.
402.02 Materials
Provide aggregate materials in accordance with Subsection 703.05, “Aggregates for Traffic Bound Surface Course.”
402.03 Equipment — Vacant
402.04 Construction Methods
B.Shaping and Maintenance Shape and compact as directed by the R esident Engineer if placing material adjacent to the roadway. Correct irregularities, such as holes, ruts, waves, and undulations, with material from the working windrow on the subgrade. Continue shaping the surface material until it is compacted and free of irregularities. Place the surface course material to the elevations shown on the Plans. Remove excess material and stockpile at a location approved by the Resident Engineer.
C.Traffic Control Unless otherwise specified, avoid closing the road to traf fic. Minimize interference with traffic. Maintain warning signs and lights to safeguard against traffic accidents. Place windrows or piles of surface course material on the shoulders and off the traveled roadway at the end of the workday.
402.05 Method of Measurement
For each material quantity of the relevant traffic -bound surface course pay item, the Resident Engineer will deduct the weight of moisture that is in excess of 5 percent of the oven -dry weight.
Referenced in this section
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Source: Oklahoma Standard Specifications for Highway Construction, 2019 Edition. Pages 223–224 of 935. View official source ↗