ITEM #0406314A – 80 MIL (2 mm) PAVEMENT MARKING GROOVE 5” WIDE (130 mm)
ITEM #0406315A – 80 MIL (2 mm) PAVEMENT MARKING GROOVE 7” WIDE (180 mm)
ITEM #0406316A – 80 MIL (2 mm) PAVEMENT MARKING GROOVE 9” WIDE (230 mm)
ITEM #0406317A – 80 MIL (2 mm) PAVEMENT MARKING GROOVE 13” WIDE (330 mm)
Work under this item shall consist of grooving the pavement surface in a continuous or regularly spaced fashion for the placement of recessed pavement markings. Unless otherwise noted, the groove shall be 1 inch (25 mm) wider than the anticipated pavement marking. The groove for double-yellow centerline markings shall consist of two grooves, each 5 inches (130 mm) wide.
Groove Width: 5 inches (130 mm) wide for 4-inch (100 mm) markings
7 inches (180 mm) wide for 6-inch (150 mm) markings
9 inches (230 mm) wide for 8-inch (220 mm) markings
13 inches (330 mm) wide for 12-inch (300 mm) markings
Groove Depth: 0.080 inches (2 mm) ± 0.010 inches (0.25 mm)
The groove shall not be installed continuously for intermittent pavement markings, but only where markings are to be applied.
The groove shall not be installed on metal bridge decks, on bridge joints, at drainage structures, at loop detector sawcut locations, or in other areas identified by the Engineer.
The grooving equipment shall be equipped with a free-floating, depth-controlled head which provides a consistent groove depth over irregular pavement surfaces. The grooving head shall only be equipped with diamond saw blades. Any ridges in the bottom of the groove shall have a maximum height of 0.015 inches (0.38 mm).
The grooving equipment shall be capable of installing a groove 6 inches (150 mm) away from any vertical or horizontal obstruction.
The pavement marking groove shall be installed in accordance with the current ConnDOT pavement marking standard drawings.
The Contractor shall establish control points for measuring offsets and pre-marks along the entire distance of pavement being grooved. Prior to installation of the groove, the Contractor shall verify the equipment is capable of installing the correct width and spacing of the groove. The control points, pre-marks, and equipment will be reviewed by the Engineer prior to commencement of the work.
The groove will be considered defective if any edge of the groove varies more than 0.25 inch (6.35 mm) in a 10-foot length (3 m), or if the alignment of the groove visibly deviates from the normal alignment of the road.
Final Cleaning: The Contractor shall immediately collect all debris and dust resulting from the grooving operation by vacuuming the pavement groove and adjacent pavement surface. Collected debris and any waste material shall be properly disposed of by the Contractor.
The work area shall be returned to a debris-free state prior to re-opening to traffic.
Repair of Unacceptable Groove:
The Contractor shall repair any defective groove(s) to the satisfaction of the Engineer. All work in conjunction with this repair shall be performed at no additional cost to the State.
Pavement Marking Requirements:
The Contractor is required to install permanent epoxy resin pavement markings in the grooves before the lane or roadway is opened to live traffic. If the permanent pavement markings cannot be installed before the lane or roadway is opened to live traffic, temporary 0.005-inch (0.125 mm) hot-applied waterborne pavement markings without glass beads shall be installed before the lane or roadway is opened to live traffic at no additional cost to the State. Within 10 calendar days, permanent epoxy resin pavement markings shall be applied in the groove over the 0.005-inch (0.125 mm) hot-applied waterborne pavement markings.
Groove Depth Gauge:
The Contractor shall supply the Engineer with two accurate, easily readable gauges with which to verify groove depth for the duration of the project. The gauges shall be delivered no less than one week prior to the anticipated beginning of grooving operations. Gauges shall be accompanied by manufacturer’s instructions for their use. The gauges will be returned to the Contractor at the conclusion of the project.
Method of Measurement:
This work will be measured for payment by the number of linear feet (meters) of groove installed in the pavement as ordered and accepted by the Engineer.
Basis of Payment:
This work will be paid for at the contract unit price per linear feet (meters) of “Pavement Marking Groove” installed in the pavement and accepted. This price shall include cleaning of the pavement, all materials, equipment, tools, depth gauges, and labor incidental thereto, and disposal of any waste material resulting from the operation.
Pay Item Pay Unit
80 Mil (2 mm) Pavement Marking Groove 5” (130 mm) Wide L.F. (m)
80 Mil (2 mm) Pavement Marking Groove 7” (180 mm) Wide L.F. (m)
80 Mil (2 mm) Pavement Marking Groove 9” (230 mm) Wide L.F. (m)
80 Mil (2 mm) Pavement Marking Groove 13” (330 mm) Wide L.F. (m)
Item #0406314A, #0406315A, #0406316A, #0406317A