Enhanced Linear Delineation-12DS811(J785).Spec.pdf

12DS811(J785)

MICHIGAN

DEPARTMENT OF TRANSPORTATION

SPECIAL PROVISION

FOR

ENHANCED LINEAR DELINEATION

PMK:MKB 1 of 2 APPR:MWB:CT:10-21-15

a. Description. This work consists of preparing guardrail and concrete barrier surfaces and applying retroreflectorized white, yellow and/or red reflectors or reflective sheeting reflector systems for enhanced linear delineation. Complete this work in accordance with this special provision, the project plans, the MMUTCD, the standard specifications, and as directed by the Engineer.

b. Materials. Provide all reflectors and reflective sheeting reflectors and supports meeting the requirements of section 919 of the Standard Specifications for Construction, and the manufacturer’s specifications.

1. Guardrail - Post Mount. For single-color delineation (i.e. white or yellow), choose from the following, or approved equal:

A. Shur-Tite Guardrail Post Flat Mount Delineator “Shortie”, white or yellow.

B. Carsonite Guardrail Delineator, white or yellow.

C. Pexco S-Flex Guardrail Reflector, white or yellow.

2. Concrete Barrier - Side Mount. For single-color delineation (i.e. white or yellow), choose from the following, or approved equal:

A. Luciol Systems A.D. (continuous system), white/white or yellow/yellow.

B. Luciol Systems E.X. (gapped system), white/white or yellow/yellow.

C. 3M 6 inch LDS, white or yellow.

c. Construction. Clean and dry the guardrail or concrete barrier surface and remove any obstacles or debris that can interfere with the installation of the line delineation system.

Post mount guardrail delineation is to be mounted to the front side of guardrail posts and not the blocks unless otherwise approved by the Engineer.

Side mount concrete barrier delineation is to be installed at the height recommended by the manufacturer or as directed by the Engineer.

Do not install enhanced linear delineation on guardrail approach terminals. Place enhanced linear delineation beginning on standard run of guardrail.

12DS811(J785)

PMK:MKB 2 of 2 10-21-15

Mechanically fasten the selected line delineation system to the clean, dry surface in accordance with this special provision, the manufacturer’s requirements, and as directed by the Engineer.

Adhesives may be used to supplement mechanical fasteners, but not in lieu of them. Install the selected delineation system at the spacing shown in Table 1 or as directed by the Engineer:

Table 1: Single- or Dual-Color Delineation Systems

Delineation System Spacing (Center-to-Center in feet)

Luciol Systems (A.D. or E.X.) 12.5

3M 6 inch LDS 10

Shur-Tite Flat Mount Guardrail Delineator “Shortie” 50

Carsonite Guardrail Delineator 50

Pexco S-Flex Guardrail Reflector 50

Approved Equal As directed by the Engineer

Orient reflectors on the selected delineation system per the manufacturer’s requirements, so that the reflective sheeting and optical performance requirements of section 919 of the Standard Specifications for Construction are met. Match the color of reflectors with the color of pavement edge lines stipulated in MMUTCD. Use of adhesive as the permanent attachment is prohibited;

a mechanical attachment is required. Take care not to damage the guardrail or concrete barrier during installation. Repair any damage caused by the installation as directed by the Engineer at the Contractor’s expense.

Perform final cleanup of the completed area prior to moving to the next section of installation.

d. Measurement and Payment. The completed work, as described, will be measured and paid for at the contract unit price using the following pay items:

Pay Item Pay Unit

Enhanced Delineation, Single Color, Guardrail, Post Mount........................................ Foot Enhanced Delineation, Single Color, Conc Barrier, Side Mount .................................. Foot

Each pay item includes the cost of preparing the guardrail or concrete barrier surface, removal of any existing guardrail or barrier delineators, providing and installing the selected system and all its supporting elements for installation, and final cleanup of the entire project.

The completed work will be measured by the foot along the entire length of the guardrail or concrete barrier to which the system is being applied from the beginning of the first system section to the end of the last system section, including gaps between system sections. Exclude sections gapped for bridges, discontinuities in the guardrail or concrete barrier, or as directed by the Engineer.

The cost of repairs to any damaged guardrail or concrete barrier is included in the unit price for the related repair pay items.