Specifications include, but are not limited to: A. GRINDING 1. Equipment: Grinding of PCC pavement will be accomplished using diamond blades mounted on a self-propelled machine designed specifically for diamond grinding and texturing pavement. The equipment will weigh a minimum of 35,000 pounds including the grinding head and be of a size that will grind a strip at least 4 feet wide in a single pass. The effective wheel base of the machine will be no less than 12 feet. The effective wheel base is defined as the distance from the front wheel assembly transverse pivot point to the transverse pivot point of the profile/depth control/ground drive wheels. The equipment will be such that it will not strain or damage the underlying pavement surface. Grinding equipment that causes raveling, aggregate fractures, spalls, or disturbance of the transverse or longitudinal joints will not be permitted. The equipment will have a positive means of vacuuming the grinding residue from the pavement surface, leaving the surface in a clean, near-dry condition. 2. Methods and Procedures: The grinding will be performed in a longitudinal direction. Grinding will begin and end at lines normal to the pavement centerline at the project limits. Passes of the grinding head will not overlap more than 1 inch. No unground surface area between passes will be permitted. The area ground between passes will not be left smooth or polished. Adequate cross slope drainage will be maintained. Lateral drainage will be achieved by maintaining a constant cross slope between grinding extremities in each lane. The finished cross slope will match the pre-grind cross slope. Structures will not be ground.
