00850.20 871 Section 00850 - Common Provisions for Pavement Markings
Description
00850.00Scope - This Work consists of furnishing, preparing, and installing all forms of pavement
markings.
Materials
00850.10Materials - Furnish the following Materials from the QPL:
• Adhesive for Pavement Markers • High Performance Pavement Markings • Methyl Methacrylate • Pavement Markers • Reflective Elements* • Marking Paint • Marking Tape • Thermoplastic
* Reflective elements used with materials other than marking paint are not required to be from the QPL. Use reflective elements according to the manufacturer's recommendations.
00850.11Flexible Bituminous Adhesive - At least 2 weeks before using, submit for Agency testing
and approval a 15 pound brick sample of flexible bituminous adhesive for each manufacturer lot number, including previously tested and approved lot numbers that are over 1 year old, that will be used on the Project . All previously rejected lot number samples will not be retested. Agency testing and approval is only for acceptance of use of the adhesive.
Equipment
00850.20Equipment - Use Equipment acceptable by the marking material manufacturer for the
method specified and the following:
Equipment .
for applying the specified pavemen t marking Material at a uniform width and thickness on the Roadway surface.
Except for tape applications, use automatic bead applicators that place a uniform layer of beads on the line.
Provide Equipment that can:
• Place two parallel lines simultaneously with 4 inch minimum to 12 inch maximum spacings between the two lines. • Place the entire width of a line in one Pass. Use a three- gun system for applying sprayed markings.
Hand units are allowed for tape applications only.
00850.30 872 (c) Equipment f or Inlaid/Grooved Markings - For thermoplastic and methyl methacrylate inlaid markings on dense graded asphalt concrete Pavement , provide grinders with either diamond cutting heads that create smooth, flat -bottomed cuts of uniform depth or carbide cutting heads that create smooth uniform depths and uniform patterned striations as the Contractor elects.
For all other operations, provide grinders with diamond cutting heads that create smooth, flat-bottomed cuts of uniform depth or sloped cuts as show n.
Labor
00850.30Manufacturer 's Representative - For Sections referencing 00850.30, provide the
services of a manufacturer's representative on-site during the installation, authorized to sign a warranty on behalf of the manufacturer.
00850.31Manufacturer -Certified Installers - For Sections referencing 00850.31, provide installers
certified by the marking materials manufacturer for the specified marking material and method. Do not begin instal lation before receiving the Engineer's approval.
Construction
00850.40Plans : For Projects with partial striping Plans or Projects without striping Plans, document
all existing striping that is not shown in the Supplemental Drawings. Submit documentation to the Engineer at least 7 Calendar Days before the loss of existing pavement markings.
in the Project, install striping as shown.
a Project, install striping according to the following:
• In areas where striping details are shown on the Supplemental Drawings, install striping as shown. • In areas where striping details are not shown on the Supplemental Drawings, install striping to match the origi nal striping configuration with the appropriate striping items listed in the Contract Schedule of Items.
the Project, install striping to match the original str iping configuration with the appropriate striping items listed in the Contract Schedule of Items.
00850.42Pre -Striping Conference - Meet with the Engineer and striping Subcontractor, if striping
is done by a Subcontractor, at least 2 weeks prior to beginning striping Work to discuss methods and practices of accomplishing all required striping Work . Submit the following in writing at least 5 Calendar Days before the pre-striping conference for approval:
• A striping schedule showing areas and timing of Work , and placing of material. • A list of materials proposed for use and the application method. • A copy of the manufacturer's installation instructions and Material Safety Data Sheets (MSDS). • Proof of installer's certification for those Sections referencing 00850.31. • Equipment specifications. • A spill recovery plan including: • Name, address, and phone number of the Contractor's contact with the DEQ. 00850.45 873 • Name, address, and phone number of the persons certified and on- call to do clean-up.
00850.43Prepare and Prime Pavement - Prepare Pavement surfaces according to the following:
• Existing Pavement Surfaces - When required by the pavement marking manufacturer, remove pavement markings from existing Pavement surfaces that will adversely affect the bond of new pavement marking Material to the Roadway surface according to 00225.45 .
Remove all other contaminants from existing Pavement surfaces that may adversely affect the installation of new pavement mar kings by sandblasting, shot -blasting, or sweeping. Air blast the Pavement with a high-pressure system to remove extraneous or loose material.
• New Asphalt Concrete Surfaces - Remove contaminants from new AC surfaces that may adversely affect the installation of the pavement markings by sandblasting, shot -blasting, or sweeping. Air blast the Pavement with a high-pressure system to remove extraneous or loose material. Apply Materials to new asphalt concrete that is sufficiently cured according to the manufacturer's recommendations.
• New Portland Cement Concrete Surfaces - Remove curing compounds and laitance by an approved mechanical means . Air blast the Pavement with a high- pressure system to remove extraneous or loose material . Apply M aterials to concrete that has reached a minimum compressive strength of 3,000 psi and that is sufficiently cured according to the manufacturer's recommendations.
After the Pavement surface is clean and dry, apply primer as recommended by the manufacturer to the area receiving the pavement markings. Apply the primer in a continuous, solid film according to the recommendations of the primer manufacturer and the pavement markings manufacturer.
00850.44Alignment Layout - Place control points for lines every 50 feet on tangent and
every 25 feet on a curve. Using these control points, layout a continuous narrow guideline for each line, along one edge of, or uniformly offset from the intended per manent line location. Do not proceed with installation until the guidelines are approved by the Engineer.
For inlaid/grooved markings, indicate the exact grind-out location with a 4 inch wide line as the guideline. For broken lines, lane drop lines, and dotted lines, use 10 feet, 3 feet, and 2 feet long sections respectively, at the cycle length shown. For solid lines, use a continuous line. Use marking paint from the QPL applied at a thickness of 6 mils. Reflective elements are not required.
00850.45Installation - Apply pavement marking Materials to clean dry Pavement surfaces and
according the following:
• Place Material between May 1 and October 15. Place Material according to the manufacture r's installation instructions . • Place parallel double lines in one Pass. • Place the specified width of lines in one Pass. • The Pavement surface shall not be visible in the striped areas. • The top of pavement marking shall be smooth and uniform. • Skip line ends shall be square and clean. • Place pavement marking lines parallel and true to line. • Place skip lines so that they are in cycle with at least one end of any adjacent project. • Place markings in proper alignment with existing markings. • Immediately clean up marking material dribbled beyond the cutoff.
00850.46 874 For inlaid/grooved markings, grind the slot as shown. For each grinder operator and piece of Equipment , obtain the Engineer's and manufacturer representative's approval of the slot within the first 150 feet for solid lines and within the first 300 feet for skip lines. Do not proceed with grinding until the slot is approved. Repeat this process for each new grinder operator or new piece of Equipment used. After grinding, obtain the Engineer's and manufacturer representative's approval before placing marking material. Clean the area with high pressure air immediately before placing the marking material.
00850.46Placement Tolerance - Allowable tolerances for insta llation are:
Lateral location on roadway: 1/2 inch on tangents; 1 inch on curves
• 40-foot skip cycle length: ± 2 inches for skip length, ± 2 inches for gap length • 12-foot skip cycle length: ± 3/4 inch for skip length, ± 1 inches for gap length
• 8-foot skip cycle length: ± 1/2 inch for skip length, ± 3/4 inches for gap length
• Skip Cycle: A tolerance of 1/10 of the skip line length on the first skip line of a run, but it shall be on cycle within one skip
• Double lines: Parallel, with a gap tolerance of ± 1/2 inch
• Width of lines: + 3/8 inch, - 1/16 inch
• Thickness of flat, surface applied lines: + 1/3 of the specified thickness, − 1/10 of the specified thickness • Divergence of parallel double lines: ± 3/8 inch
.47 Quality Control - Record the following readings for each type and color of marking material and the locations where they were taken. Submit the results to the Agency within 1 Day of taking the readings.
• For inlaid/grooved markings, measure the depth of the slot every 300 feet. • For surface applied markings, except paint and tape applications, measure the thickness of the lines, at 300 foot intervals. Thickness is measured from the top of the pavement marking to the top of the wearing surface. Marking material placed in a depression left by pavement line removal will not be included in measuring the thickness of the line.
At the time of installation, note and report to the Engineer all soft spots and darkened areas that may result in poor bonding and durability of the pavement markings.
retroreflectivity according to ODOT TM 777. Acceptance will be according to the following:
• Longitudinal Markings - Each longitudinal marking sublot will be accepted if the average of the measur ements and at least 90 percent of the individual measurements within the sublot meet or exceed the required minimum initial retroreflectivity.
00850.71 875 If more than 10 percent but no more than 25 percent of the individual measurements in a sublot fail, take additi onal measurements within the sublot according to ODOT TM 777, Section 7.2.1 halfway between the measurements taken during initial evaluation. Combine these additional measurements with the initial measurements and re-evaluate the sublot. If the combined sublot measurements do not meet the 90 percent criteria, remove and replace the entire longitudinal marking sublot at no additional cost to the Agency.
If more than 25 percent of the individual measurements in a sublot fail remove and replace the entire l ongitudinal marking sublot at no additional cost to the Agency.
• Transverse Markings - Each transverse marking sublot will be accepted if the average of the measurements and at least 90 percent of the individual measurements within the sublot meet or exceed the required minimum initial retroreflectivity.
If more than 10 percent but not more than 25 percent of the individual measurements in a sublot fail, take additional measurements within the sublot according to ODOT TM 777, Section 7.2.2. The Engineer w ill randomly select an equal number of untested transverse markings to test. Combine these additional measurements with the initial measurements and re-evaluate the sublot. If the combined sublot measurements do not meet the 90 percent criteria, remove and replace the entire transverse marking sublot at no additional cost to the Agency .
If more than 25 percent of the individual measurements in a sublot fail remove and replace the entire transverse marking sublot at no additional cost to the Agency.
Temp orary
00850.50General - Protect all applied markings from traffic until sufficiently cured so as not to be
damaged or tracked by traffic movements.
Finishing and Cleaning Up
00850.70Disposal of Waste - Dispose of all materials according to 00290.20
00850.71Removal and Repair of Unacceptable Work - Remove unacceptable materials according
to 00225.4 5. If more than one repair is required in a single 300-foot section, grind and repair the entire 300-foot section.