121 SECTION 152
152.01 Trucks
A.General. Use trucks that prevent contents from escaping during transit.
B.Water Trucks. Use water trucks that have the following features: − Capability of evenly distributing water; − Watertight connections and tanks; and − Control valves operated from the dri ver’s seat.
C.Aggregate Trucks. Use a truck with a dump box capable of controlled discharge.
D.Bituminous Trucks. Use trucks equipped with tarpaulins to protect the asphalt from weather. Install tarps free of holes larger than 0.5 inches in diameter and of sufficient size to completely cover the opening above the asphalt. Use a truck with a dump box capable of controlled discharge. Use a smooth-lined dump box, free from cracks, holes, and deep dents. Use trucks that are equipped with a hole of sufficient size for a thermometer, on the driver’s side in the middle of the box. Discharge material without the dump body or truck frame making direct contact or exerting pressure on the paver. Lubricate dump box when necessary with a thin film of material that does not dissolve the bitumen. Do not use petroleum distillates. Drain excess coating from dump box before use.
E.Bituminous Tank Trucks. Ensure bituminous tank trucks are sealed at the refinery. Equip tank trucks with a conveniently located bitumen-sampling valve. Ensure the valve is inside the tank and the valve stem and outlet extend outside the tank. Section 153 122 SECTION 153 EARTHWORK AND AGGREGATE EQUIPMENT
153.01 Reclaimer
Use a self-propelled machine capable of pulverizing and mixing to a depth of 18 inches that also has the following features: − Capable of incorporating water into the mixture; − Produces a homogeneous mixture that has a uniform moisture content; and − Uses a control system that automatically controls the elevation of the cutting head.
153.02 Roadbed Planers
Use a track mounted roadbed planer equipped with rotary cutting mechanisms. Equip the planer with an automatic grade control that maintains the elevation at both sides of the planer by controlling the elevation of one side and the crown, or each side independently. Use an erected string line or other approved grade reference. Use a tightly stretched wire or string as the string line. Offset the string line parallel to the pavement edge on one or both sides and parallel to the established grade of the pavement surface.
Source: North Dakota Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 156–156 of 550.