32 17 23 Pavement Markings.docx

08-01-16

SECTION 32 17 23

PAVEMENT MARKINGS

GENERAL

SUMMARY

Section Includes:

Paint on pavement surfaces, in form of traffic lanes, parking bays, areas restricted to handicapped persons, crosswalks, and other detail pavement markings.

APPLICABLE PUBLICATIONS

Comply with references to extent specified in this section.

Federal Specifications (Fed. Spec.):

TTB1325D - Beads (Glass Spheres) RetroReflective.

TTP1952F - Paint, Traffic and Airfield Marking, Waterborne.

Master Painters Institute (MPI):

No. 97 - Traffic Marking Paint, Latex.

SUBMITTALS

Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

Submittal Drawings:

Show pavement marking configuration and dimensions.

Show international symbol of accessibility at designated parking spaces.

Manufacturer's Literature and Data:

Description of each product.

Application instructions.

Certificates: Certify products comply with specifications.

Qualifications: Substantiate qualifications comply with specifications.

Installer with project experience list.

QUALITY ASSURANCE

Installer Qualifications:

Regularly installs specified products.

DELIVERY

Deliver products in manufacturer's original sealed packaging.

Mark packaging, legibly. Indicate manufacturer's name or brand, type, color, production run number, and manufacture date.

Before installation, return or dispose of products within distorted, damaged, or opened packaging.

STORAGE AND HANDLING

Store products indoors in dry, weathertight conditioned facility.

Protect products from damage during handling and construction operations.

FIELD CONDITIONS

Environment:

Product Temperature: Minimum 13 degrees C (55 degrees F) for minimum 48 hours before installation.

Surface to be painted and ambient temperature: Minimum 10 degrees C (50 degrees F) and maximum 35 degrees C (95 degrees F).

Field Measurements: Verify field conditions affecting traffic marking installation. Show field measurements on Submittal Drawings.

WARRANTY

Construction Warranty: FAR clause 52.24621, "Warranty of Construction."

PRODUCTS

SYSTEM PERFORMANCE

Design paint complying with specified performance:

Application: Fed. Spec. TTP1952.

PRODUCTS - GENERAL

Provide each product from one manufacturer and from one production run.

SANDBLASTING EQUIPMENT

Air compressor, hoses, and nozzles of proper size and capacity as required for cleaning painted surfaces. Compressor to provide minimum 0.08 cu. m/s (150 cfm) of air at pressure of minimum 625 kPa (90 psi) at each nozzle used.

PAINT APPLICATOR

Apply marking paint with approved mechanical equipment. Provide equipment with constant agitation of paint and travel at controlled speeds. Synchronize one or more paint "guns" to automatically begin and cut off paint flow in case of skip lines. Equipment to have manual control to apply continuous lines of varying length and marking widths as indicated on Drawings. Provide pneumatic spray guns for hand application of paint in areas where mobile paint applicator cannot be used.

PAINT

Paint: MPI No. 97. For obliterating existing markings comply with Fed. Spec. TTP1952. Provide minimum 18 L (5 gallons) containers.

EXECUTION

PREPARATION

Examine and verify substrate suitability for product installation.

Allow new pavement surfaces to cure for period of minimum 14 days before application of marking materials.

Protect existing construction and completed work from damage.

Clean substrates. Remove contaminants capable of affecting subsequently installed product's performance.

Remove dust, dirt, and other granular surface deposits by sweeping, blowing with compressed air, rinsing with water, or combination of these methods.

Completely remove rubber deposits, existing paint markings, and other coatings adhering to pavement with scrapers, wire brushings, sandblasting, mechanical abrasion, or approved chemicals as directed by Contracting Officer's Representative.

As an option, comply with Fed. Spec. TTP1952 for removal of existing paint markings on asphalt pavement. Apply black paint in as many coats as necessary to completely obliterate existing markings.

Scrub affected areas with several applications of trisodium phosphate solution or other approved detergent or degreaser, and rinse thoroughly after each application, Where oil or grease are present on old pavements to be marked, .

After cleaning, seal oilsoaked areas with cut shellac to prevent bleeding through new paint.

Clean and dry surface before pavement marking.Do not begin any marking until Contracting Officer's Representative inspected surface and gives permission to proceed.

INSTALLATION - GENERAL

Install products according to manufacturer's instructions and approved submittal drawings.

When manufacturer's instructions deviate from specifications, submit proposed resolution for Contracting Officer's Representative consideration.

PAINT APPLICATION

Apply uniformly painted pavement marking of required colors, length, and width with true, sharp edges and ends on properly cured, prepared, and dried surfaces.

Comply with details as indicated on drawings and established control points.

Apply paint at wet film thickness of 0.4 mm (0.015 inch). Apply paint in one coat. When directed by Contracting Officer's Representative, apply additional coats at markings showing light spots. Comply with paint manufacturer's maximum drying time requirements to prevent undue softening of asphalt, and pickup, displacement, or discoloration by tires of traffic.

When deficiency in marking drying occurs, discontinue paint operations until cause of slow drying is determined and corrected.

Remove and replace marking applied less than minimum material rates, deviates from true alignment, exceeds stipulated length and width tolerances, or shows light spots, smears, or other deficiencies or irregularities.

Remove marking by carefully controlled sandblasting, approved grinding equipment, or other approve method to prevent damage on applied surface.

DETAIL PAVEMENT MARKING APPLICATION

Apply Detail Pavement Markings, exclusive of actual traffic lane marking as follows:

At exit and entrance islands and turnouts.

On curbs.

At crosswalks.

At parking bays.

Other locations as indicated on drawings.

Apply International Handicapped Symbol at indicated parking spaces. Color as shown on drawings. Apply paint for symbol using suitable template that will provide pavement marking with true, sharp edges and ends.

Install detail pavement markings of colors, widths and lengths, and design pattern at locations indicated on drawings.

TOLERANCES

Length and Width of Lines: Plus or minus 75 mm (3 inches) and plus or minus 3 mm (1/8 inch), respectively, in case of skip markings.

Length of intervals exceeding line length tolerance are not acceptable.

CLEANING

Remove excess paint before paint sets.

PROTECTION

Protect pavement markings from traffic and construction operations.

Protect newly painted markings from vehicular traffic until paint is dry and track free.

Place warning signs at beginning of wet line, and at points well in advance of marking equipment for alerting approaching traffic from both directions.

Place small flags or other similarly effective small objects near freshly applied markings at frequent intervals to reduce crossing by traffic.

Repair damage.

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