610Traffic Stripes, Traffic Markings, and Rumble Strips

610.01DESCRIPTION

This Section describes the requirements for applying traffic stripes, traffic markings, and Raised Pavement Markers

markings, and RPMs, removing and replacing RPM lenses, and constructing rumble strips.

610.02MATERIALS

.01 Materials

Provide materials as specified: Flexible Delineators ................................ ................................ ................................ ................................ ..... 911.03 Traffic Stripes ................................ ................................ ................................ ................................ .......... 912.03.01 Traffic Markings ................................ ................................ ................................ ................................ ...... 912.03.02 Raised Pavement Markers (RPM) ................................ ................................ ................................ ............. 912.03.03 Epoxy Resin Adhesive ................................ ................................ ................................ .......................... 912.03.03.2 Lenses................................ ................................ ................................ ................................ ................... 912.03.03.3 Lens to Casting Adhesive ................................ ................................ ................................ ...................... 912.03.03.4

.02 Equipment

Provide equipment as specified: Grinding Machine ................................ ................................ ................................ ................................ ....... 1006.08 Epoxy Striping Equipment ................................ ................................ ................................ .......................... 1007.01 Thermoplastic Applicator ................................ ................................ ................................ ............................ 1007.02 Traffic Stripe and Marking Removal Equipment ................................ ................................ .......................... 1007.03 Rumble Strip Cutting Machine ................................ ................................ ................................ .................... 1007.04 Pavement Saw ................................ ................................ ................................ ................................ ............. 1008.04

610.03CONSTRUCTION

.01 Traffic Stripes

application temperatures.

foreign material, including curing compound on new concrete. Clean the surface 2 inches beyond the perimeter of the stripes to be placed.

the Contractor’s ability to meet the requirements specified in 610.03.01.D. For each striping test strip, apply striping to approximately 500 linear feet of pavem ent with the same striping procedure that will be used for the Project. Construct a test strip for each applicator unit and epoxy resin material used. Provide the RE with 50 test cards made of heavy stock paper measuri ng 8 inches by 2 inches, and 2 wet film thickness gauges. Construct additional test strips when major equipment repairs or adjustments are made or when the traffic stripes are determined to be defective. Construct additional test strips when traffic striping operations are performed on multiple, non-continuous occasions. Perform additional test strips as requested by the RE. When the test strip is in compliance, as determined 308 by the RE, proceed with striping operations. Each test strip may remain in place and become part of the finished stripes subject to the requirements of 610.03.01.E.

compound at a tem perature of between 100 and 130 °F onto dry surfaces. Apply the compound with a wet film thickness of 20 ± 1 mil. Apply the material during dry weather conditions when the ambient temperature is a minimum of 45 °F and the surface temperature is a minimum of 50 °F. Adjust operations as required for the prevailing ambient and surface conditions to achieve a no-track drying time of 30 minutes or less. Immediately after, or in conjunction with, the compound application, uniformly apply 12 pounds of large glass beads per gallon of epoxy resin to the compound. After applying the large glass beads, uniformly apply 12 pounds of small glass beads per gallon of epoxy resin to the compound. Remove all compound that has been tracked or spilled outside of the intended placement areas. E Performance. Ensure that the traffic stripes, show no fading, lifting, cracking, chipping for any reason including but not limited to traffic wear, mai ntenance activities including snow plowing, until Acceptance. Ensure that 60 days after application, traffic stripes have a minimum retroreflectance value of: 375 millicandelas per square meter per lux for white traffic stripe 250 millicandelas per square meter per lux for yellow traffic stripe

damaged during construction. Remove defective stripes as specified in 610.03.08. Replace an entire 10 foot skip line if the RE determines the stripe to have a deficiency. If the RE determines, based upon calculated and measured yields, that the striping has a wet film thickness of less than 19 mils, restripe the entire length with 20 mils of new compound. Provide the RE with a Reflectometer that meets a 30 meter geometry as specified in ASTM E 1710, capable of measuring wet and dry conditions as specified in ASTM E 2176 and ASTM E 2177, and that has been certified by the manufacturer as being calibrated within the last 2 years. The RE will test the retroreflectance of traffic stripes. Replace traffic stripes that do not meet the retroreflectance values indicated in 610.03.01.E. Replace the entire length of striping where improper curing or discoloration has occurred. Discoloration is localized areas or patches of brown or grayish colored compound. Where improper curing or discoloration occurs intermittently in intervals of 100 feet or less throughout the striping length, replace the entire length of striping from the beginning of the first occurrence until the end of the last occurrence, plus 5 feet on each end. Replace the entire length of striping that has failed to bond to the pavement, or has chipped or cracked. Where more than 25 spots of chipping, cracking, or poor bonding have occurred within 1 ,000 linear feet of striping, replace the entire 1,000 foot length of striping as indicated in 610.03.01.E.

opening to traffic. At a minimum, delineate center lines on undivided roadways and broken lines between lanes before the traveled way is opened. The RE will determine when the traveled way can be opened to traffic.

.02 Traffic Markings Lines, Traffic Markings Symbols, and Traffic Markings Route Symbols

includes:

foreign material, including curing compound on new concrete. Clean the surface 2 inches beyond the perimeter of the marking to be placed. 309

thoroughly dry surfaces and during dry weather conditions. Apply using equipment and procedures that produce markings of the specified color, width, and thickness with well-defined edges, uniform retroreflectivity, and proper bonding to the pavement. Apply the thermoplastic material as follows:

in position according to the manufacturer’s recommendations. Meet the minimum initial retroreflectance value, as specified in 610.03.01.D for thermoplastic tape, by applying additional glass beads to the hot-wet material in a uniform pattern as necessary.

temperatures are at least 50 °F, apply the melted material at a temperature of between 400 and 425 °F. Extrude the thermoplastic traffic markings on the HMA or concrete pavement ensuring a thickness of 90 ± 1 mils. Immediately after, or in conjunction with the thermoplastic extrusion, uniformly apply glass beads to the wet material at a minimum rate of 10 pounds per 100 square feet of markings. Apply glass beads by mechanical means only.

but not limited to traffic wear, maintenance activities including snow plowing, until Acceptance. Ensure that 60 days after application, traffic markings have a minimum retroreflectance value of: 375 millicandelas per square meter per lux for white traffic markings 250 millicandelas per square meter per lux for yellow traffic markings

defective or that are damaged during construction. Remove defective markings as specified in 610.03.08. Replace the entire area of thermoplastic traffic markings determined to be less than the required thickness, to have incorrect color or width, to have failed to bond to the pavement, or to have chipped or cracked. The minimum replacement area is an individual word or symbol, or for longitudinal lines the entire length from where the deficiency first occurs to where it no longer exists. The RE will determine initial retroreflectance as follows: Provide the RE with a Reflectometer that meets a 30 meter geometry as specified in ASTM E 1710, capable of measuring wet and dry conditions as specified in ASTM E 2176 and ASTM E 2177, and that has been certified by the manufacturer as being calibrated within the last 2 years. The RE will test the retroreflectance of traffic markings with the provided reflectometer according to the manufacturer’s recommendations. Replace traffic markings that do not meet the retroreflectance values indicated in 610.03.02.D.

opening to traffic. The RE will determine when the traveled way can be opened to traffic.

.03 RPMs (Raised Pavement Markers)

Lay out the locations of all RPMs before installing to ensure proper placement. Place RPMs as follows:

line to the near edge of the RPM.

gap between dashes as shown in the Contract documents.

Obtain RE approval of RPM locations before beginning sawcutting operations. If the pre-installation layout determines that a RPM is to be placed at a transverse joint or at a location that shows evidence of cracking, checking, spalling, or the failure of underlying base material, relocate the RPM longitudinally. Obtain RE appro val of the proposed relocation. Ensure that the center -to-center RPM distance does not deviate from the specified distance by ±4 feet. If the center-to-center distance for the proposed relocation deviates from the specified center -to-center distance by ±4 feet, do not install the RPM. 310 When placing RPMs on bridge deck surfaces, locate reinforcement steel in the bridge decks using a pachometer. Do not place RPMs in any location that would expose the existing reinforcement steel. Repair damage to the reinforcement steel or bridge deck that is caused by the installation of RPMs. Sawcut roadway grooves to the depth, width, and diameter specified by the RPM manufacturer. Sawcut only those grooves for RPMs that will be installed during the same workday. Ensure that roadway grooves are free of dirt, dust, oil, grease, moisture, curing compounds, loose or unsound pavement, or other material that may interfere with bonding of the epoxy compound. Sand blast grooves where necessary. Ensure that the grooves are dry where installing RPMs. Apply epoxy compound according to the manufacturer’s recommendations. Do not apply epoxy compound when either the pavement surface or ambient air temperature is less than 50 °F at the time of application. Install RPMs according to the manufacturer’s recommendations. Ensure RPM leveling lugs rest on the pavement surface. Do not allow lugs to drop below the pavement surface. The tips of each RPM’s snow plow deflecting surface must remain below the roadway surface. Use reflector adhesive to bond each RPM lens to its casting. The RE will reject a RPM if visible buildup of epoxy compound or reflector adhesive affects its optical performance. Ensure that RPMs are installed within 14 days of opening each day’s surface paving to traffic.

.04 Removal of RPM

Remove RPMs as directed by the RE. Dispose of RPMs as specified in 201.03.01.H. If directed by the RE, fill the hole with HMA patch as specified in 159.03.07 except sawcutting is not required.

.05 Removal and Replacement of RPM Lenses

Remove existing RPM lenses and install new mono-directional or bi-directional pavement reflector lenses using methods that do not damage the RPM castings. Dispose of RPM lenses as specified in 201.03.01.H.

.06 Flexible Delineators, Ground Mounted

Use white retroreflective sheeting for delineators located on the right side when facing in the direction of traffic. Use yellow retroreflective sheeting for delineators located on the left side when facing in the direction of traffic. Drive ground mounted flexible delineators vertically into the ground to a minimum depth of 18 inches. Position flexible delineators so that the plane face of the center of the reflective area is at an angle of 0 degrees with a line that is perpendicular to the direction of traffic.

.07 Rumble Strip

At least 20 days before constructing rumble strips, submit a plan for cutting rumble strips and debris collection/removal to the RE for approval. Construct rumble strips on newly constructed pavement after it has cooled sufficiently to allow the cutting to be done cleanly without causing damage to the adjacent pavement. Clean the area where rumble strips are to be constructed. Construct rumble strips by cutting indentations into the pavement perpendicular to the traveled way without disturbing the surrounding pavement. Collect cuttings and reuse or dispose of as specified in 202.03.03.C. Ensure that after cutting centerline rumble strips, the cen terline rumble strips are cleaned, all debris is collected and the surface is prepared as specified in 610.03.01.B before placing traffic stripes. Do not construct rumble strips 200 feet linear feet before and after the approximate midpoint of Weigh-in-Motion (WIM) systems in the roadway as listed in the Special Provisions. Ensure that rumble strips are constructed within 14 days of opening each day’s surface paving to traffic. 311

.08 Removal of Traffic Stripes and Traffic Markings

Remove traffic stripes and traffic markings using methods that do not damage the underlying or adjacent pavement, and do not cause gouging or create ridges or grooves in the pavement. Before beginning removal operations, demonstrate to the RE the proposed method to remove at least 95 percent of stripes or markings without removing more than 1/16 inch of pavement thickness. Obtain RE approval before beginning removal operations. The removal area includes the area of the stripe or marking plus 1 inch on all sides. Only remove traffic stripes or markings that will be replaced during the same workday. Dispose of debris from the removal of stripes and markings as specified in 201.03.01.H.

.09 Removal of Rumble Strip

Prior to shifting lanes, remove rumble strips as indicated in the plans and as directed by the RE. Centered over the rumble strip, mill the width of the rumble strip plus 4 inches beyond the edge of the rumble strip on both sides. Mill to a minimum depth of 2 inches. Clean the milled area as specified in 401.03.01.A. Obtain RE approval of the removal before proceeding with paving in the milled rumble strip. Apply polymerized joint adhesive to the vertical surfaces of the milled rumble strip area as specified in 401.03.04. Apply tack coat as specified in 401.03.05 at an application rate of 0.15 gallons per square yard to bottom surface of the milled rumble strip area. Spread and grade HMA surface course in the milled rumble strip area as specified in 401.03.07.E. Ensure that the temperature of the HMA when placed and compacted is at least 250 ºF. Compact as specified in

401.03.07.F, ensuring that the top of the compacted HMA is flush with, or not greater than 1/8 inch higher than, the

adjacent pavement surface. Reuse removed material as specified in 202.03.03.C.

610.04MEASUREMENT AND PAYMENT

The Department will measure and make payment for Items as follows: Item Pay Unit TRAFFIC STRIPES, ___" LINEAR FOOT TRAFFIC MARKINGS LINES, ___" LINEAR FOOT TRAFFIC MARKINGS SYMBOLS SQUARE FOOT TRAFFIC MARKINGS ROUTE SYMBOLS SQUARE FOOT RPM, MONO-DIRECTIONAL, WHITE LENS UNIT RPM, MONO-DIRECTIONAL, AMBER LENS UNIT RPM, BI-DIRECTIONAL, AMBER LENS UNIT REMOVAL OF RPM UNIT REMOVAL AND REPLACEMENT OF RPM LENS UNIT FLEXIBLE DELINEATOR, GROUND MOUNTED UNIT RUMBLE STRIP LINEAR FOOT REMOVAL OF TRAFFIC STRIPES LINEAR FOOT REMOVAL OF TRAFFIC MARKINGS SQUARE FOOT REMOVAL OF RUMBLE STRIP LINEAR FOOT The Department will measure TRAFFIC STRIPES and TRAFFIC MARKINGS LINES by the linear foot for each specified width of stripe. The Department will not measure gaps in striping. The Department will measure rumble strip by the linear foot measured in the longitudinal direction of the rumble strip without deducting the interval spacing between rumble strips and the gaps for RPM placement and make payment u nder the Item RUMBLE STRIP. The Department will not include payment for traffic stripes in RUMBLE STRIP. The Department will make payment for traffic stripes placed in conjunction with constructing a centerline rumble strip under TRAFFIC STRIPES as specified in

The Department will not include payment for fog seal in RUMBLE STRIP. The Department will measure and make payment for FOG SEAL STRIP as specified in 422.04.