S-17-26_SPECIAL_PROVISON.pdf

Special Provisions – POWDERHOUSE RD & CARLSON ST. SIGNAL PROJECT

04001

PRE-FORMED PAVEMENT MARKINGS

PART 1 GENERAL

1.1 SUMMARY

A. The markings must be a resilient white, yellow, or other color (as available and/or required) preformed thermoplastic product with uniformly distributed glass beads throughout the entire cross-sectional area. The markings must be resistant to the detrimental effects of motor fuels, lubricants, hydraulic fluids, antifreeze, etc. Lines, legends and symbols are capable of being affixed to bituminous and/or portland cement concrete pavements by using the normal heat of a propane torch or heating method in accordance with the application specifications in Section 4 below.

B. The markings must be capable of conforming to pavement contours, breaks, and faults through the action of traffic at normal pavement temperatures. The markings shall have resealing characteristics such that it is capable of fusing with itself and previously applied thermoplastic when heated with the propane torch or recommended heater.

C. The markings shall not have minimum ambient and road temperature requirements for application, storage, or handling.

1.2 MANUFACTURING CONTROL AND CERTIFICATION

A. The marking material must be produced in the United States, and the manufacturer must be ISO 9001:2015 certified for design, development and manufacturing of preformed thermoplastic pavement markings, and provide proof of current certification.

PART 2 MATERIALS

2.1 General:

A. Shall be Premark® as manufactured by Flint Trading Inc. or approved equal.

B. The marking material must be composed of an ester modified rosin in conjunction with aggregates, pigments, binders and glass beads which have been factory produced as a finished product and meet the requirements of the current edition of the Manual on Uniform Traffic Control Devices. The thermoplastic material conforms to AASHTO designation M249 with the exception the relevant differences due to the material being supplied in a preformed state.

C. Contrast markings shall be used on concrete surfaces or as shown in the plans.

2.2 Graded Glass Beads:

A. The material must contain a minimum of thirty percent (30%) intermixed graded glass beads by weight. The intermixed beads shall be conforming to

AASHTO designation M247 with minimum 80% true spheres and minimum refractive index of 1.50.

B. The material must have factory-applied surface beads in addition to the intermixed beads at a rate of 1 lb. (± 10%) per 10 sq. ft. These factory-applied surface beads shall have a minimum of 80% true spheres and minimum refractive index of 1.50.

C. Black material shall be manufactured without intermixed glass beads and without factory-applied surface beads. The material shall be manufactured with abrasives on the material surface to provide skid resistance.

2.3 Pigments:

A. White: The material shall be manufactured with sufficient titanium dioxide pigment to meet FHWA Docket No. FHWA-99-6190 Table 5 and Table 6 as revised and corrected.

B. Red, Blue, and Yellow: The material shall be manufactured with sufficient pigment to meet FHWA Docket No. FHWA-99-6190 Table 5 and Table 6 as revised and corrected. Yellow pigment must be organic and must be heavy-metal free.

C. Other Colors: The pigments must be heavy-metal free.

2.4 Heating Indicators: The top surface of the material (same side as the factory applied surface beads) shall have regularly spaced indents. The closing of these indents during application shall act as a visual cue that the material has reached a molten state allowing for satisfactory adhesion and proper bead embedment, and as a post-application visual cue that the application procedures have been followed.

2.5 Skid Resistance: The surface, with properly applied and embedded surface beads, must provide a minimum resistance value of 45 BPN when tested according to

ASTM E 303.

2.6 Thickness: Unless otherwise specified, the material must be supplied at a minimum thickness of 125 mils (3.15 mm). Markings such as bicycle markings and accessibility symbols will be supplied at a minimum thickness of 90 mil unless otherwise specified.

2.7 Versatility: As an option, markings such as turn arrows and combination arrows may come without surface applied glass beads facilitating the use of those arrows as either left or right indicators.

2.8 Environmental Resistance: The material must be resistant to deterioration due to exposure to sunlight, water, salt or adverse weather conditions and impervious to oil and gasoline.

2.9 Flexibility: In accordance with ASTM D522, the preformed thermoplastic marking materials shall have flexibility such that when a 1 in. by 6 in. sample is bent through an arc of 90° at a uniform rate in 10 seconds (9° per second) over a 1-inch mandrel at 50°F (10˚C) with no cracking occurring in the test sample. The sample must be conditioned at the stated temperatures (±2°) prior to testing for a minimum of four hours. At least two specimens tested must meet the flexibility requirements at 50°F for a passing result.

2.10 Impact Resistance: In accordance with ASTM D5420, the material shall have a minimum impact resistance of 140 in. lbs. at 77°F (25˚C) when tested with a

Gardner Impact Tester.

2.11 Retroreflectivity: The material, when applied in accordance with manufacturer’s guidelines, must demonstrate a uniform level of sufficient nighttime retroreflection when tested in accordance to ASTM E 1710. The applied material must have an initial minimum intensity reading of 500 mcd·m-2·lx-1 for white and 300 mcd·m-

2·lx-1 for yellow as measured with a Delta pavement marking retroreflectometer.

Note: initial retroreflection is affected by the amount of heat applied during installation. When ambient temperatures are such that greater amounts of heat are required for proper installation, initial retroreflection levels may be affected.

2.12 Interconnected material: For markings that include more than one color, the material must consist of interconnected individual pieces of preformed thermoplastic pavement material which through a variety of colors and patterns make up the desired design. The individual pieces in each material segment, typically 2ft. x 3 ft. (.61m x .915m), must be factory assembled with a compatible material and interconnected in a single layer so that it is not necessary to assemble the individual pieces within a material segment in the field. This interconnected option is typically offered for contrast markings and horizontal surface signage.

PART 3 EXECUTION

3.1 APPLICATION

A. Remove loose particles, dirt, tar grease, residue of prior pavement markings, and other deleterious material from the surfaces to be marked.

B. All layouts required in the construction of the pavement marking are the responsibility of the CONTRACTOR. The layout shall be approved by the City of Cheyenne Traffic Department prior to the installation.

C. Asphalt: The materials shall be applied using the propane torch and/or infrared heating method recommended by the manufacturer. The material must be able to be applied without minimum requirements for ambient and road temperatures and without any preheating of the pavement to a specific temperature. The material must be able to be applied without the use of a thermometer. The pavement shall be clean, dry and free of debris. Supplier must enclose application instructions in English and Spanish with each box/package only pertaining to an application method that does not require preheating of the pavement to a specific temperature before application.

Refer to the manufacturer’s application instructions for full details.

Markings made with interconnected material may require a recommended sealer per manufacturer’s recommendation.

D. Portland Cement Concrete: Grind inset grooves into pavement surfaces prior to the application of all pavement markings onto concrete. Ensure the grinding machine is equipped with a dust collection system or that wet grinding is performed so the discharge will meet current DEQ requirements. The depth of the groove shall be 125 mils ± 20 mils. The bottom of the groove shall have a rough flat grind finished surface. The width and length of the groove shall not be more than one (1.5”) inch greater than the dimensions of the pavement marking. When grinding for an irregular shaped symbol, follow the width and length tolerances to the extent practicable as approved by the ENGINEER.

The same application procedure shall be used as described under Section

3.1. However, a compatible primer sealer shall be applied before application to assure proper adhesion. Refer to the manufacturer’s application instructions for full details.

3.2 TECHNICAL SERVICES

A. The successful bidder shall provide technical services as required.

Regionally located manufacturer’s representative, employed directly by the manufacturer, can provide no-cost on-site training for proper application.

3.3 TRAINING AND CERTIFICATION

A. Installation training provided by the manufacturer to each employee must be completed prior to project start date. Certification of this training must be in writing and submitted prior to installation.

3.4 PLACEMENT AND ACCEPTANCE

A. Marking tape shall be applied according to the manufacturer’s recommendations.

B. The City of Cheyenne Traffic Department shall verify the placement and dimensions of finished markings.

Applied pavement markings shall be straight and close to the intended alignment without abrupt changes that result in an unacceptable appearance.

Remove and replace pavement markings that do not meet the minimum retroreflectivity requirements.

Removal and replacement of unsatisfactory pavement marking shall be at no additional cost to the CITY.

C. The CONTRACTOR shall replace all failed pavement markings at no additional cost to the CITY, before the project is accepted. The

CONTRACTOR shall have thirty (30) calendar days; exclusive of days the CONTRACTOR is prevented from working due to adverse weather and road surface conditions, to replace the failed pavement markings. If the work is not completed in this period, the ENGINEER, after giving the CONTRACTOR written notice, shall reinstate the assessment of working day changes. Working day changes shall continue until the work is accepted.

3.5 TRAFFIC CONTROL

A. Prior to installation, the CONTRACTOR shall provide the necessary construction zone traffic control. Traffic control devices shall be placed to keep traffic from traveling on the prepared pavement and/or markings during installation.

PART 4 METHOD OF MEASUREMENT AND BASIS OF PAYMENT

4.1 METHOD OF MEASUREMENT

A. Stop bars and crosswalk bars shall be paid by the linear foot, square foot, or by each installed.

B. Legends shall be paid by each installed.

4.2 BASIS OF PAYMENT

A. The accepted quantities of Traffic Markings shall be paid for at the contract unit price per each item listed in the Bid Proposal; which payment shall be full compensation for furnishing all labor, materials, pavement preparation, equipment, tools and incidentals necessary to complete the work.

END OF

SECTION 04001