641PAVEMENT MARKING—GENERAL

641.01 Description

641.02 Materials

641.03 General

641.04 Equipment

641.05 Pavement Preparation

641.06 Layout and Premarking

641.07 Line Placement Tolerance

641.08 Marking Types

641.09 Two -Way Radio Communications

641.10 Removal of Pavement Markings

641.11 Deduction for Deficiency

641.12 Method of Measurement

641.13 Basis of Payment

641.01 Description. This specification gives general requirements for various

kinds of retroreflective pavement markings. Deviations from these general requirem ents are covered in the specific requirements for each marking type. Place all pavement markings according to the OMUTCD.

641.02 Materials. Use marking materials that are a formulation, identified by a

manufacturer’s code number, prequalified by the Laboratory and that have the same composition as the prequalified marking material. Any materials delivered without a TE -24 when applicable and applied without Laboratory preapproval shall be removed. Laboratory tested materials not meeting specifications shall be removed from the project site . Furnish a safety data sheet ( SDS) for each material, including resin, catalyst, primer, adhesive, activator, glass beads, and cleaning solvent, to be used on the project to the Engineer before material delivery. Inform workers of the location of all SDS and allow workers an opportunity to review them. Furnish the Engineer, prior to application, the paint manufacturer's printed application equipment requirements and application instructions.

641.03 General. Apply lines as solid, broken, or dotted line s, either singly or in

combination, as shown on the plans. Apply broken lines in a 40 foot (12.0 m) cycle consisting of a 10 foot (3.0 m) dash and a 30 foot (9.0 m) gap between broken lines, unless otherwise shown on the plans. Use an accurate striping mechanism that is capable of being easily adjusted to retrace existing broken markings or to apply new materials at the correct spacing. Begin broken lines that are to be applied over plainly visible existing broken lines within 6 inches (150 mm) of the be ginning of the existing broken line, unless otherwise directed by the Engineer. Apply dotted lines in an 8 foot (2.4 m) cycle consisting of a 2 foot (0.6 m) dot and a 6 foot (1.8 m) gap 641.04 628 between dots for line extensions and in a 12 foot (3.6 m) cycle co nsisting of a 3 foot (0.9 m) line segment and a 9 foot (2.7 m) gap for lane drop/add markings. Fill gaps that were not marked as a result of template use for spray -applied auxiliary markings with marking material after the template is removed. If applyin g extruded thermoplastic, the Contractor may leave small gaps in arrows or letters resulting from template use unfilled. Ensure that pavement markings are free of uneven edges, overspray, or other readily visible defects that detract from the appearance or function of the pavement markings. Ensure that lines are sharp, well defined, and uniformly retroreflective. Apply the lines to the width specified ±1/4 inch (6 mm). Fuzzy lines, excessive overspray, or non-uniform application are unacceptable. The Engine er will inspect lines at night to verify proper retroreflectivity. Correct pavement markings that are improperly applied, located, or reflectorized. Reapply lines applied with insufficient material quantities according to 641.11, 644.04 or 648.05. Remove i mproperly located lines according to 641.10, and apply new lines in the correct locations. Reapply any lines applied with non -specification materials. Obtain the Engineer’s approval for methods and equipment used for pavement preparation, marking, and mark ing removal. Keep glass beads dry during storage and before use. Furnish to the Engineer at least 3 days in advance of installation current copies of the manufacturer’s instructions and recommendations for application of any marking material, including pri mer, activator, catalyst, and adhesive, shown on the plans. Schedule and perform other construction work, such as shoulder paving, seeding, and mulching in a manner to avoid damage to applied pavement markings. Do not apply pavement marking materials to th e reflector of a plowable raised pavement marker. Interrupt the application of the pavement marking line at each raised pavement marker where marking material would otherwise be applied to the marker’s prismatic reflector. Provide a maximum gap in the mark ed line of 18 inches (0.5 m) at each marker. Remove pavement marking material applied to a prismatic reflector surface, or replace the reflector that same workday. If material must be removed from the reflector, restore the reflector’s brightness to its pr ior condition.

641.04 Equipment . Equip long line pavement marking equipment for traffic

paint, polyester, epoxy and work zone marking Item 642 with a computerized Data Logging System (DLS), including a cab mounted display which shows the actual material ap plication rate and film thickness. For center line, lane line and edge line markings, when the length of marking exceeds 0.5 miles (0.8 km) of continuous line equivalent, document the following with the DLS: 641.05 629 Measure and record application vehicle speed to nearest 0.1 MPH (0.16 km/h) , Measure and record weight and/or volume amount of material used by color , Measure and record weight of glass beads , Measure and record pavement surface temperature , Measure and record air temperature , Measure and record dew point , Measure and record humidity , Calculate and record average material application rate and film thickness over the section painted. Record as a separate DLS report line entry the above information for each route section painted, when the length of center line, lane line and edge line marking exceeds 0.5 miles (0.8 km) of continuous line equivalent. A route section is defined as one direction of a contiguous section of highway (without breaks) with the same route number designation. DLS documenta tion is not required for center line, lane line and edge line markings of 0.5 miles (0.8 km) or less, and for channelizing lines of any length. If the DLS equipment fails, finish that day’s work only and resume when the DLS equipment is working. The Depart ment will provide a standard DLS short form and long form, which prescribes the correct DLS report format and content prior to beginning of work. On the first working day following application of markings requiring documentation with the DLS or upon demand , furnish the Engineer a copy of the DLS report in ODOT DLS short report format. The DLS report can be provided in one of the following methods, which should be agreed upon at the preconstruction meeting: Hand delivery of paper report , Fax delivery of pap er report , E-mail of Excel spreadsheet file , Disk or flash drive transfer of Excel spreadsheet file . Within two weeks of the date of application of markings requiring documentation with the DLS, furnish the Engineer the Excel spreadsheet file of the DLS report in ODOT DLS long report format by e -mail at the e -mail address provided at the preconstruction meeting. At the end of the project, furnish the Engineer all Excel spreadsheet files in ODOT DLS long report format. Each DLS shall have an annual cal ibration of all mechanical and electrical components and its software function and output confirmed by the DLS manufacturer or their designated representative. Evidence of the annual calibration shall be carried by a signed and dated stamp or seal affixed to the inside of the driver’s door of each striper.

641.05 Pavement Preparation. Clean all visible loose or foreign material from

the surface to be marked. Equip the pavement marking equipment with an air jet to 641.06 630 remove all debris from the pavement in advan ce of the applicator gun. Operate the air jet when marking material is being applied, and synchronize it with marking material application. Power -broom clean all surfaces where gore markings or edge lines are to be applied. If required by the Engineer, als o power -broom clean other surfaces. Do not apply marking to portland cement concrete until the concrete in the areas to be marked is clean of membrane curing material and is dry.

641.06 Layout and Premarking. Lay out the locations of all lines, words, and

other symbols to ensure their proper placement. Do not start marking operations until the Engineer or the Engineer’s representative has approved the layout and premarking lines If applying longitudinal or transverse lines, use existing lines, construction joints, or premarking to guide this marking equipment. On projects where resurfacing or other operations will result in obliteration of the existing pavement markings, establish reference points to ensure proper placement of restored markings. If existing markings are to be retraced, verify any adjustment in the location with the Engineer. Establish “T” marking of no -passing zones according to the plans or a no -passing zone log provided by the Engineer. Locate premarking from survey data or reference points , and offset it so as to parallel the theoretical edge of the marking lines at a maximum distance of 1 inch (25 mm). Use templates for the layout of arrows, words, and other symbols. Place premarking for longitudinal lines at 40 foot (12 m) intervals, and do not exceed 2 inches (50 mm) in width or 12 inches (300 mm) in length. Locate premarking for auxiliary markings from the plans or schematic forms provided by the Engineer.

641.07 Line Placement Tolerance. Ensure that pavement marking lines are

straight or smoothly curved, true to the alignment of the pavement, and do not deviate laterally from the proper location at a rate of more than 2 inches in 100 feet (50 mm in 30 m). The Engineer will not allow any deviation greater than 3 inches (75 mm). Remove im properly located lines according to 641.10 and apply new lines in the correct locations.

641.08 Marking Types. Apply marking materials at the rate or thickness

specified in 642.04, 643.04, 644.04, 645.03, 646.05, 647.04, or 648.05 and, except for parking l ot stall markings, ensure that they are uniformly retroreflective. Ensure that portions of parking stalls that are adjacent to street traffic are retroreflective. Pavement markings consist of the following types:

641.09 Two -Way Radio Communications. If two -way radio equipment is

required, furnish and maintain radio equipment necessary for the voice communication between the striper and the inspector’s vehicle at all times during the pavement marking operation. Use equipment capable of transmitting and receiving normal voice communications to at least 4 miles (6 km).

641.10 Removal of Pavement Markings. If specified as a pay item, remove

pavement markings as described in 614.11.G. Take care during marking removal 641.11 632 not to scar, discolor, or otherwise damage the pavement surface. Do not overpaint or use other methods of covering markings instead of removal.

641.11 Deduction for Deficiency. For traffic paint, polyester and epoxy, the

Engineer will compute each day the amount of marking material (including all components) and glass beads applied for each route section on the DLS report for determining unsatisfactory sections. The Department will reduce the contract price for each route s ection in direct proportion to the percent of deficiency of marking material or glass beads as specified in 642.04, 643.04 and 646.05, up to 20 percent for each material deficiency. The Department will only use the greater deficiency of marking material or glass beads to compute the deduction. If the deficiency of marking material or glass beads is 20 percent or more, the Department will consider the work unsatisfactory. In addition, the Engineer will consider as unsatisfactory materials applied outside the temperature or application requirements in Items 642, 643 and 646 without written approval of the Engineer. Replace pavement markings and glass beads in all sections determined to be unsatisfactory by retracing over the unsatisfactory markings at the full thickness specified in Items 642, 643 and 646.

641.12 Method of Measurement. The Department will measure pavement

markings complete in place in the units designated. The Department will measure line quantities as the length of completed marking, including the gaps, intersections, and other sections of pavement not normally marked. The Department will measure the removal of pavement markings using the same method of measurement as completed markings in the units designated.

641.13 Basis of Payment. The Depa rtment will pay for accepted quantities of

work performed under Items 642, 643, 644, 645, 646, 647 and 648. The Department will not pay for costs associated with correcting improperly located lines, replacing reflectors coated with pavement marking materia l, or replacing unsatisfactory pavement markings. The Department will not pay for lines placed using non -specification materials. The Department will not pay for non -specification lines determined through field measurement. The Department will pay for Two -Way Radio Equipment at the lump sum bid price. ITEM 642 TRAFFIC PAINT

642.01 Description

642.02 Materials

642.03 Equipment

642.04 Application

642.05 Basis of Payment

642.01 Description . This work consists of furnishing and applying fast dry

water -based tr affic paint or fast dry water -based traffic paint for cold weather 642.02 633 applications according to Item 641, 740.01, 740.02, 740.09, and the additional requirements specified below.

642.02 Materials . Furnish materials conforming to:

Traffic Paint ................................ ............................ 740.02 Glass Beads, Type A ................................ ............... 740.09 The Engineer may obtain random samples from the application equipment. Furnish the manufacturer’s identification information for the sampled liquid materials. The Department will test the quality assurance sample for conformance to th e manufacturer’s production ranges. Samples not meeting the manufacturer’s production ranges will require the Contactor to re -apply, at his expense, any markings using that sample. All other untested batches will become not approved and will either require testing or re -application. Do not apply paints that have exceeded the manufacturer’s shelf life. Do not use glass beads that are wet.

642.03 Equipment . Use equipment capable of applying the traffic paint as

recommended by the manufacturer and applying gla ss beads at the time of line placement. Furnish a calibrated measuring device acceptable to the Engineer to measure the traffic paint in the striper tanks. Equip all striping equipment for center line, lane line and edge line markings with a computerized D ata Logging System (DLS) conforming to 641.04 when the length of marking exceeds 0.5 miles (0.8 km) of continuous line equivalent. Furnish written documentation to the Engineer for the equipment’s operational capabilities from the equipment manufacturer.

642.04 Application . Apply pavement markings only when the surface is clean

and dry in accordance with the paint manufacturer’s written application instructions. If application is required when air and pavement temperatures are between 35 °F (2 °C) and 50 °F (10 °C) obtain approval from the Engineer and apply only pre - qualified Type 1A cold weather traffic paint materials. Apply traffic paint according to the manufacturer’s recommendations and protect line from tracking. Keep the paint thoroughly mixed duri ng application. Apply 20 mil (0.51 mm) thick traffic paint Type 1 at the following rates: 20 Mil Thickness Line Width (inch) 4 6 8 12 24 Gallon per Mile of Line Solid Line 22 33 44 66 132 Broken Line 5.5 8.25 11 16.5 33 Dotted Line 5.5 8.25 11 16.5 33 Areas, Symbols, Words 1.25 gallon per 100 square feet 642.04 634 0.51 mm Thickness Line Width (mm) 100 150 200 300 600 Liter per Kilometer of Line Solid Line 50 75 100 150 300 Broken Line 12.5 19 25 38 75 Dotted Line 12.5 19 25 38 75 Areas, Symbols, Words 0.51 L/m² Apply 15 mil (0.38 mm) thick traffic paint Type 1A at the following rates: 15 Mil Thickness Line Width (inch) 4 6 8 12 24 Gallon per Mile of Line Solid Line 16 24 32 48 96 Broken Line 4 6 8 12 24 Dotted Line 4 6 8 12 24 Areas, Symbols, Words 0.94 gallon per 100 square feet 0.38 mm Thickness Line Width (mm) 100 150 200 300 600 Liter per Kilometer of Line Solid Line 37 56 74 111 222 Broken Line 9.3 14 18.6 28 56 Dotted Line 9.3 14 18.6 28 56 Areas, Symbols, Words 0.38 L/m² Do not dilute the paint. However, the Contractor may add spent traffic paint solvents, generated during performance of this work, to virgin traffic paint. If adding spent solvents, add them in a maximum ratio of 1:50 of spent solvents to virgin paint. Ensure that the maximum concentration of spent solvents in the striping equipment tanks is maximum 2 percent. Add spent solvents during the loading of the striping equipment. Apply glass beads to the wet paint so that the beads are embedded and reta ined in the paint and provide uniform retroreflectivity in the paint surface. Apply glass beads at a minimum rate of 15 pounds per 100 square feet (7.3 kg per 10 m2) for Type 1 traffic paint. Apply glass beads at a minimum rate of 8.0 pounds per 100 square feet (3.9 kg per 10 m2) for Type 1A traffic paint. Ensure temperature of the paint at the discharge point is within the range recommended by paint manufacturer. Replace unsatisfactory markings according to 641.11. Furnish the Engineer daily, biweekly an d final DLS reports according to 641.04. Perform traffic control operations for all 642 pavement markings according to

614.12 and MT -99.20M, but provide for center line, edge line, lane line and

channelizing line traffic control equipment according to MT -99.20M equipment requirements for center line, longer than 2 minute dry. Payment for this work shall be included in the 642 price per mile for Center Line, Edge Line and Lane Line and the 642 price per foot for channelizing Line.