SECTION 702—DELINEATORS
702.01 Description
This work shall consist of furnishing and installing road-edge, barrier, flexible post, or guardrail delineators of the type specified in accordance with these specifications and in conformity with the lines and dimensions on the plans or as established by the Engineer.
702.02 Materials
a.Fabrication of aluminum panels with reflective sheeting shall conform to Section 701.
b.Reflective sheeting shall conform to Section 247.02(f) and shall be selected from the VDOT’ s Approved Products List 46.
c.Plastic lens retroreflector delineators shall conform to Section 235.
d.Plastic panels shall conform to Section 235.
e.Aluminum panels shall conform to Section 235.
f.Adhesive for attaching delineators to guardrail and barrier shall be as recommended by the delineator manufacturer.
g.Flexible Post Delineators and anchoring systems shall conform to Section 235 and shall be selected from the VDOT Materials Division’ s Approved Products List 16. Surface-mount flexible post delineators shall contain an anchoring system for attaching the flexible post delineator to the pavement, median, or island. Ground-mount flexible post delineators shall contain an anchoring system for anchoring the flexible post delineator in earth.
702.03 General Requirements
Retroreflectors for road edge, flexible post, barrier, and guardrail delineators shall be the same color as the adjacent pavement marking, unless otherwise specified on the plans. Barrier delineators on the top of barriers separating opposing directions of traffic shall be yellow on both sides.
a.Road-edge Delineators:
1.Interstate road-edge delineators shall consist of two types. T ype I shall be an aluminum panel with reflective sheeting. T ype II shall be a plastic lens retroreflector.
2.Standard and special road-edge delineators shall be an aluminum alloy panel with reflective sheeting.
b.Barrier and Guardrail Delineators shall have no less than 7.0 square inches of retroreflective sheeting and shall have no more than 5 inches of vertical projection when installed. The delineator shall be fabricated from a flexible plastic panel. 702.04
702.04 Procedures
a.Roadedge delineators shall be placed as shown on the Standard Drawings, ED-2 or ED-3, as appropriate. Posts shall be installed plumb and to the details and dimensions shown.
b.Barrier and guardrail delineators shall be applied to clean, dry surfaces in accordance with the delineator manufacturer’ s recommendations. Loose material and dirt shall be removed from concrete by wire brushing and from steel surfaces by other appropriate methods. When recommended by the manufacturer, a primer shall be used to aid adhesion. Delineators shall be installed on all barriers and guardrails that are within 15 feet of the edge of the pavement. Barrier delineators shall be installed on the respective barriers at the locations shown on the Standard Drawings, MB-Series, or on the relevant bridge parapet/railing detail shown on the plans. Barrier delineators shall be installed using an adhesive recommended by the delineator’ s manufacturer. The Contractor shall install guardrail delineators at the midpoint of the offset block, if an offset block is used, or on the web of the guardrail posts if an offset block is not required in the installa - tion. The Engineer will not permit field cutting or adjustments where weak post guardrail and cable guardrail systems are installed, delineators shall be manufactured to fit. If a bolting system is used to attach the delineators to the posts, the bolting system shall be such that drilling of the guardrail posts or offset blocks is unnecessary. Delineators shall be attached with screws or by an adhesive system recommended by the manufacturer where delineators are to be attached to wood or recycled plastic offset blocks. Screws shall be stainless steel or galvanized. Spacing for delineators on barrier or guardrail shall be on 80-foot centers unless otherwise indicated. Delineators mounted on guardrail and barriers located in curves on interchange ramps shall be spaced in accordance with the spacing for interstate road-edge delineators as shown on the Standard Drawing ED-3, except that the maximum spacing shall be 80 feet. Where the center-to-center spacing for delineators on guardrail cannot be obtained due to post spacing, the delineators shall be installed to provide spacing that is not greater than the spacing indicated herein.
c.Flexible Post Delineators – Surface-mount delineators shall be attached to clean, dry roadways, medians, or concrete island surfaces in accordance with the manufacturer’ s instructions. Loose material and dirt shall be removed from concrete surfaces by wire brushing. When recommended by the manufacturer, a specified primer shall be used to aid in adhesion. Ground-mount flexible post delineators shall be embedded in the ground in accordance with the manufacturer’ s instructions.
702.05 Measurement and Payment
Road-edge delineators will be measured in units of each and will be paid for at the contract unit price per each for the standard and type specified. This price shall include post, fasteners, retroreflective elements, excavation, and backfill.
Referenced in this section
Sections that cite this one
Delineators in other states
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Source: Road and Bridge Specifications, 2020 Edition. Pages 847–848 of 1,065. View official source ↗