8-59 Section 811. Permanent Pavement Markings
811.01. Description This work consists of providing and applying retroreflective permanent pavement markings in accordance with the MMUTCD. Provide markings, shapes, spacing, and dimensions that conform to MDOT ’s Pavement Marking Standard Plans . 811.02. Materials Provide materials in accordance with the following sections : Glass Beads .......................................................................................... 920 Wet Reflecti ve (WR) Optics .................................................................. 920 Waterborne Pavement Marking Material ............................................... 920 Low Temperature Waterborne Pavement Marking Material .................. 920 Regular Dry Pavement Marking Material .............................................. 920 Cold Plastic Pavement Marking Material .............................................. 920 Thermoplastic Pavement Marking Material ........................................... 920 Sprayable Thermoplastic Pavement Marking Material .......................... 920 Polyurea Pavement Marking Material ................................................... 920 Modified Epoxy Pavement Marking Material ......................................... 920 Preformed Thermoplastic Pavement Marking Material ......................... 920 Provide the Material Safety Data Sheets to the Engineer for required materials and supplies . Dispose of unused material and containers in accordance with the f ederal Resource Conservation and Recovery Act (RCRA) of 1976 (42 USC 6901 et seq. ) and Part 111, Hazardous Waste Management , of the Natural Resources and Env ironmental Protection Act (MCL 324.11101 et seq. ). Provide samples of permanent pavement marking materials on Department request. Ship all material to the job site in sturdy containers marked in accordance with subsection 920.01.A. Submit to the Engineer prior to the start of work the manufacturer’s recommended application rate of the wet reflective (WR) optics and the liquid applied pavement marking binder to be used on the project . If the manufacturer’s recommended application rate differs from the specif ied rate in Table 811-1, the manufacturer’s recommended rate supersedes the table values. MDOT Standard Specifications for Construction Section 811
8-60 Table 811- 1:
Pavement Marking Material Application Rates per Mile(a)(b) Binder Type Wet Binder Thickness without Beads (mil) Min. Dry Thickness with Beads (mil) Binder Volume / Weight and Bead Weight Line Type Broken Solid 4 inch 6 inch 8 inch 12 in ch 4 inch 6 inch 8 inch 12 in ch Waterborne 15 20 Binder (gal) 4.2 6.2 8.3 12.4 16.5 24.7 33 49.4 Bead (lb) 34 50 67 100 132 198 264 396 Low temperature waterborne 15 20 Binder (gal) 4.2 6.2 8.3 12.4 16.5 24.7 33 49.4 Bead (lb) 34 50 67 100 132 198 264 396 Regular dry 15 20 Binder (gal) 4 6 8 12 16 24 32 48 Bead ( lb) 24 36 48 72 96 144 192 288 Thermoplastic 90 110 Binder (lb) 435 653 870 1,305 1,740 2,610 3,480 5,220 Bead (lb) 50 75 100 150 200 300 400 600 Sprayable thermoplastic 30 40 Binder (lb) 140 210 280 420 560 840 1,120 1,680 Bead (lb) 50 75 100 150 200 300 400 600 Modified epoxy 20 45 Binder (gal) 5.5 8.25 11 17 22 33 44 66 Bead (lb) As directed by the manufacturer As directed by the manufacturer Polyurea 20 45 Binder (gal) 5.5 8.25 11 17 22 33 44 66 Bead (lb) As directed by the manufacturer As directed by the manufacturer
a.Binder yield indicates the amount (gal or lbs/mile) needed to produce the required mil thickness without drop on beads.
b.Bead yield indicates the amount (lbs/mile) of drop on beads required for the given binder. MDOT Standard Specifications for Construction Section 811
8-61 811.03. Construction
A.Equipment. Provide self -propelled equipment certified by the Department in accordance with MDOT’s Equipment Certification Guidelines – Pavement Markings . Certification is effective for 2 years . The Engineer may approve other equipment for special markings or areas inaccessible to self -propelled pavement marking equipment. Apply longitudinal lines using certified self -propelled pavement marking equipment . Operate marking equipment at no greater than the certified speed. The Engineer will assume that a striper operating above the certified working speed has operated at that speed for the entire day. The Department may inspect the equipment at any time. Use equipment capable of uniformly applying material to the required length and width. Provide equipment for placing centerlines capable of applying three 4-inch-minimum -width lines on a two-lane road in one pass . If applying multiple centerlines, use three spray guns positioned 6 inches on center . For two-lane freeways, apply the lane line from the left lane. For freeways with at least three lanes, apply the right lane line with the right edgeline when the right lane line and edgeline are the same material . Use an easily adjusted, dashing mechanism to retrace ex isting lane or centerline markings. Use a self -propelled pavement marker capable of marking pavement in either direction on a roadway . Use a continuous skip cycle . Do not zero or return the cycle control unit to the beginning or start of a new cycle. Provi de a distance meter to measure the length of each line. The Engineer may check the calibration of metering devices at any time. If the Engineer determines that the equipment is unsatisfactory, use other methods approved by the Engineer. Use equipment for placing hot -applied thermoplastic and sprayable thermoplastic material that can maintain the temperature recommended by the material manufacturer. Allow time for the Engineer to inspect traffic control devices as shown in MDOT’s Pavement Marking Convoy Typicals prior to marking applications. Correct traffic control devices not approved by the Engineer before continuing. If applying markings on a roadway closed to traffic, the traffic control devices specified in MDOT’s Pavement Marking Convoy Typicals are no t required, unless otherwise directed by the Engineer. MDOT Standard Specifications for Construction Section 811
8-62 B. General. The Department will not provide storage buildings or space for
permanent pavement marking equipment or materials. If pavement marking plan sheets and/or Witness, Log are included in the project , the markings must be laid out by the Contractor prior to the permanent markings being applied. Layout is considered incidental to placement of permanent pavement markings . Provide the Engineer documented notice at least 2 calendar days prior to the Contractor ’s pavement marking crew arriving onsite to layout or layout and stripe. The onsite Engineer must approve the layout prior to the marking application. Notify the Engineer if it is discovered during layout that the pavement width or geometry has been altered or is different from the planned or logged configuration. The Contractor and Engineer will discuss and document the resolution for marking layout in such areas . If pavement marking plans and/ or Witness, Log are not in the project, it is the responsibility of the Engineer to provide layout for the permanent pavement markings. For any portion of the project that pavement marking plan sheets or details are included, layout the permanent pavement markings according to the pavement marking plans . If the contract call s for Witness , Log, t he Contractor must witness and log the existing markings in accordance with the following. Provide a pavement marking layout plan consisting of aerial imagery , computer -generated drawings and/or hand sketches with legibly handwritten or documented dimensions . When using aerial imagery, the pavement mark ings must be sketched in for any sections where they are not clearly visible. Required dimensions include turn lane storage lengths, taper lengths, stop bar location as measured from the centerline of the intersection or the crosswalk markings (if present) , symbol and legend locations, cross hatching location and spacing, longitudinal line style changes, and any other dimensions required to return markings to the pre-construction configuration . The layout plan must additionally indicate lane widths of all l anes, shoulders, bike lanes, and other features at all transition points where these elements are added and/or removed and at every ½-mile interval where there are no changes to pavement widths and/or the pavement marking configuration. Provide the pavement marking layout plan to the Engineer prior to pavement removal operations and/or any pavement markings being disturbed. If any changes are needed, the Engineer will mark up a copy of the pavement marking layout plan and initial any changes . The Engineer will provide any markups and documented approval of the pavement marking layout plan to the Contractor within 10 calendar days of initial receipt . MDOT Standard Specifications for Construction Section 811
8-63 The pavement surface must be clean and dry before applying pavement
markings. Air blast to remove material that prevents pavement markings from adhering to the pavement surface. Remove debris and dead animals from the line track. For solid lines, apply 4-inch lines, 6-inch lines, 8-inch lines, and 12- inch lines no greater than ¼ inch wider than the required width. Apply solid lines with no gaps or spaces . Apply a double line as two solid lines or one solid line and one broken line. For new broken lines, apply 12½ -foot-long lines . Leave a 37½ -foot gap between new broken lines . Continue this 50-foot cycle of broken line and gap, as shown on the plans . Apply new lines at the required location within a lateral tolerance of 1 inch and no greater than 4 inches longer than the required length. When applying centerline and lane lines on new construction, retrace at least five existing adjacent skips to match the existing pavement marking cycle. Retrace existing pavement markings using lines equal to the width and length of the original markings . For existing 4 -inch, 6-inch, 8 -inch, or 12-inch-w ide lines, retrace no greater than ¼ inch wider than the existing line. If existing lines exceed the nominal widths, ensure that the total line widths, existing and retraced, do not exceed 5 inches, 7 inches, 9 inches, and 13 inches. For existing 12½ -foot broken lines, place the retraced line to a longitudinal tolerance of no greater than 4 inches longer than the existing line. If existing lines exceed 12½ feet long, ensure that broken line lengths for existing and retraced lines do not exceed 13 feet. Mix liquid materials during application. Do not thin materials . Uniformly apply pavement marking material at the rates shown in Table 811- 1. The Engineer will determine the application rates by dividing the quantity of material used by the length of the li ne placed. The Engineer may check application rates at start up and during work without prior notice to the Contractor. Load pavement marking materials on the pavement marking machine without interfering with or delaying traffic . Operate striping equipment to prevent traffic from crossing the uncured markings . Prevent vehicles from being sprayed. Position bead guns to direct beads into the line material and provide a uniform application of beads. MDOT Standard Specifications for Construction Section 811
8-64 If applying markings in off -road areas open to traffic, including rest areas,
roadside parks, and car pool lots, maintain traffic to prevent vehicles from crossing the uncured markings. The Department does not require glass beads for waterborne pavement marking material for parking stalls and cross hatching if marki ng rest areas, roadside parks, and car pool lots . Beads are not to be placed in liquid shadow markings. Apply pavement marking lines straight or in uniform curvature. Markings must be sharp and well defined and free of uneven edges, overspray, and other vi sible defects, as determined by the Engineer . Remove pavement markings outside the required tolerances and re-apply in the correct locations . Re-apply unprotected pavement markings damaged by traffic and remove tracked lines at no additional cost to the Department.
C.Removal . If required, remove existing pavement markings or in accordance with subsection 812.03. F. When surface applying pavement markings on new concrete, remove the curing compound in accordance with subsection 812.03.F. If removing existing special markings, including legends, symbols, crosswalks, cross hatching, and stop bars, in advance of placing new special markings, install the new markings within 5 working days of removing the existing markings . When removing markings, collect and dispose of removed material.
D.Application, Temperature, and Seasonal Restrictions. Ensure that the material application rates in Table 811- 1, the temperature and seasonal application restrictions in Table 811- 2, and the additional requirements detailed in this subsection for specific materials are met when applying any material, unless directed by the Engineer . Document moisture testing and provide results to the Engineer.
1.Waterborne . The Engineer will not decide the suit ability of specific days for the application of waterborne paint . Re-apply lines damaged by weather at no additional cost to the Department. The Contractor may place waterborne pavement marki ngs immediately on new HMA pavement. For micro -surfacing projects, place waterborne pavement markings on the surface course before opening to traffic . Allow the surface to wear for at least 30 days or as determined by the Engineer before applying the secon d application of waterborne or a first application of sprayable thermoplastic. MDOT Standard Specifications for Construction Section 811
8-65 Table 811- 2:
Minimum Material Placement Temperature and Seasonal Restrictions(a) Material Minimum Air Temperature
b.Minimum Pavement Temperature(c) Date Start End Waterborne 50°F 50°F May 1 Oct. 15 Low temperature waterborne 35°F 35°F Oct. 1 May 1 Regular dry 25°F 25°F Oct. 1 May 1 Cold plastic tape with contact cement 60°F 60°F May 1 Oct. 15 Cold plastic tape – primerless – without surface preparation adhesive 60°F 60°F Jun. 1 Sept. 1 Cold plastic tape – primerless – with surface preparation adhesive 40°F 40°F Apr. 15 Nov. 15 Thermoplastic 50°F 50°F May 1 Nov. 1 Sprayable thermoplastic 50°F 50°F Apr. 15 Nov. 15 Polyurea 40°F 40°F Apr. 15 Nov. 15 Modified epoxy 40°F 40°F Apr. 15 Nov. 15 Preformed thermoplastic 35°F 35°F Apr. 15 Nov. 15
a.See text for more detailed informati on.
b.Temperature must meet minimum and be rising.
c.Pavement must be dry. Waterborne paint may be used outside the specified dates and temperatures only when approved by the Engineer.
2.Low Temperature Waterborne . If seasonal limitations prevent placement of waterborne paint, the Engineer may approve low - temperature waterborne pai nt. Wait at least 5 days after placing the pavement surface before applying low -temperature, waterborne pavement markings to new HMA wearing surface. The Engineer may waive the 5-day waiting period.
3.Regular Dry Paint . If seasonal limitations prevent the placement of waterborne paint, the Engineer may approve regular dry paint. Wait at least 14 days after placing the pavement surface before applying regular dry pavement markings to new HMA wearing surface. The Engineer may waive the 14-day waiting period.
4.Cold Plastic . Prepare the pavement surface and apply the cold plastic tape in accordance with the manufacturer’s specifications. Remove curing compound from new concrete surfaces before applying cold plastic tape. For pavements with two or more layers of MDOT Standard Specifications for Construction Section 811
8-66 existing overlay cold plastic marking material or any other
non-compatible materials, remove the existing marking material before installing the new cold plastic markings. Install cold plastic tape symbols, legends, crosswalks, cross hatching, and stop bar s, as shown on the MDOT S tandard Plans , unless otherwise required in the plans.
a.With Contact Cement . Apply contact cement recommended by the cold plastic marking manufacturer and approved by the Department . Mix contact cement during application. Do not thi n the contact cement . Allow time for solvents to evaporate from the adhesive before applying the cold plastic marking. Apply the contact cement by a method recommended by the manufacturer and ensure that it is beneath the entire marking. Provide non-adhesi ve backed cold plastic for stop bars and crosswalks. Provide adhesive -backed cold plastic for all other special markings. Immediately after placement, roll transverse and special markings at least four times with a roller weighing at least 200 pounds . The Engineer will not require additional rolling for longitudinal applications if the equipment for installing the line is equipped with a roller.
b.Primerless – Without Surface Preparation Adhesive . Ensure that the weather has been dry for at least 24 hours and that the pavement surface is dry before applying the primerless cold plastic tape marking. Clean the pavement surface using an air compressor with at least 185 cfm air flow and 120 psi . On all pavement surfaces, prevent damage to transverse and longit udinal joint sealers. Immediately after placement, roll transverse and special markings at least six times with a roller weighing at least 200 pounds . The Engineer will not require additional rolling for longitudinal applications if the equipment installing the line is equipped with a roller.
c.Primerless – With Surface Preparation Adhesive. Use surface preparation adhesive on all primerless cold plastic tape as recommended by the manufacturer or as shown on the plans. Ensure that the weather has been dry for at least 24 hours and that the pavement surface is dry before applying the primerless cold plastic tape marking. Clean the pavement surface using an air compressor with at least 185 cfm air flow and 120 psi . On all MDOT Standard Specifications for Construction Section 811
8-67 pavement surfaces, prevent damage to transverse and longitudinal
joint sealers. Immediately after placement, roll transverse and special markings at least six times with a roller weighing at least 200 pounds . The Engineer will not require additional rolling for longitudinal applications if the equipment installing the line is equipped with a roller.
5.Thermoplastic . The pavement must be free of excess surface and subsurface moisture that may affect bonding. The Engineer will not decide the suitability of specific days for the application of thermoplastic. Heat and apply the thermoplastic material within the temperature range recommended by the manufacturer.
6.Sprayable Thermoplastic. The pavement must be free of excess surface and subsurface moisture that may affect bonding. The Engineer will n ot decide the suitability of specific days for the application of sprayable thermoplastic. Heat and apply the sprayable thermoplastic material within the temperature range recommended by the manufacturer. On projects calling for 10,000 feet or less (per color) of sprayable thermoplastic pavement markings to be placed per workday, the Contractor has the option of placing two applications of waterborne paint instead of the sprayable thermoplastic pavement markings . The second application of waterborne is to be completed between 14 and 60 days after the initial application unless otherwise directed by the Engineer.
7.Polyurea. The pavement must be free of excess surface and subsurface moisture that may affect bonding. The Engineer will not decide the suitability of specific days for the application of polyurea. Surface preparation requirements for special and longitudinal polyurea pavement markings depend on surface conditions. Prepare new HMA surfaces and HMA surfaces open to traffic for 10 days or less with no oil drips, residue, debris, or temporary or permanent markings by cleaning the marking area with compressed air. Prepare new P ortland cement concrete (P CC) surfaces and PCC surfaces free of oil drips, residue, debris, and temporary or perman ent markings by removing the curing compound from the area required for pavement markings. MDOT Standard Specifications for Construction Section 811
8-68 Prepare existing HMA or PCC surfaces that do not have existing
markings but may have oil drip areas, debris, or both, by scarifying the marking area using non-millin g grinding teeth or shot blasting. The Engineer will allow the use of water blasting to scarify the marking area on PCC surfaces. Prepare existing HMA or PCC surfaces with existing non-polyurea markings by completely removing non-polyurea markings. Prepare existing HMA or PCC surfaces with existing polyurea marking and that may have oil drip areas, debris, or both, by using the following methods:
a.For existing polyurea pavement markings, scarify the proposed marking area using non-milling grinding teeth or s hot blast.
b.Occasionally , existing polyurea pavement markings require complete removal, which will be determined by the Engineer.
8.Modified Epoxy . The pavement must be free of excess surface and subsurface moisture that may affect bonding. The Engineer will not decide the suitability of specific days for the application of modified epoxy . Surface preparation requirements for special and longitudinal modified epoxy pavement markings depend on surface conditions. Prepare new HMA surfaces and HMA s urfaces open to traffic for 10 days or less free of oil drips, residue, debris, and temporary or permanent markings by cleaning the marking area with compressed air. Prepare new PCC surfaces and PCC surfaces free of oil drips, residue, debris, and temporar y or permanent markings by removing the curing compound from the area required for pavement markings. Prepare existing HMA or PCC surfaces that do not have existing markings but may have oil drip areas, debris, or both, by scarifying the marking area using non-milling grinding teeth or shot blasting. The Engineer will allow the use of water blasting to scarify the marking area on PCC surfaces. Prepare existing HMA or PCC surfaces with existing non-modified urethane markings or non-modified epoxy markings by completely removing non- modified urethane markings or non-modified epoxy markings . Prepare existing HMA or PCC surfaces with existing modified urethane pavement markings or modified epoxy pavement markings MDOT Standard Specifications for Construction Section 811
8-69 and that may have oil drip areas, debris, or both, by using the
following methods:
a.For existing modified urethane pavement markings or modified epoxy pavement markings, scarify the proposed marking area using non-milling grinding teeth or shot blast.
b.Occasionally existing modified urethane pavement marki ngs or modified epoxy pavement markings require complete removal, which will be determined by the Engineer.
9.Preformed Thermoplastic. The pavement must be free of excess surface and subsurface moisture that may affect bonding. The Engineer will not decide the suitability of specific days for the application of preformed thermoplastic. Heat and apply the preformed thermoplastic material as recommended by the manufacturer . Feather all edges of the material with a putty knife while the preformed thermoplastic is still soft.
E.Second Application . If the contract requires a second application of permanent pavement markings, complete two applications regardless of initial pavement marking conditions . Complete the second application from 14 to 60 days after initial application in the same calendar year. The Contractor may apply the second application before the required 14 days if approved by the Engineer.
F.Call Back Painting . The Engineer will provide a prioritized list of locations and limits for call back pavement marking painting. Begin call back painting work within 7 days of the Engineer’s notification.
G.Recessed Pavement Marking . Install a recess (groove) in accordance with the pavement marking material manufacturer’s installation instructions . All recessing configurations must be in accordance with the MMUTCD and MDOT’s Pavement Marking Standard Plans .
1.Grooving Concrete and Hot Mi x Asphalt Pavement . If there are no markings on the pavement, it is the Contractor’s responsibility to layout and groove exactly where the permanent markings will be placed. If there are temporary painted pavement markings in the correct location, use thes e lines as a template for the grooving operation. If there are existing permanent pavement markings in place, remove them in accordance with subsection 812.03.F prior to grooving operations . The removal of any existing pavement markings will be paid for se parately. MDOT Standard Specifications for Construction Section 811
8-70 Use equipment and methods approved by the manufacturer of the
pavement marking material to be recessed for forming grooves in pavement surfaces . Dry-cut the grooves in a single pass using stacked diamond cutting heads on self -vacuuming equipment capable of producing a finished groove ready for pavement marking material installation. Ensure that the bottom of the groove has a fine corduroy finish. If a coarse tooth pattern results, increase the number of blades and decrease the spaces on the cutting head until the required finish is achieved.
2.Placing Recessed Pavement Markings. Place t he pavement -marking material in clean and dry grooves within 24 hours of the grooves being made. Locate the groove so the entire marking can be placed within the groove.
H.Raised Thermoplastic Rumble Strips. If required on the plans, furnish and install raised thermoplastic rumble strips on pavement or as directed by the Engineer . Layout the thermoplastic rumble strips, prepare the pavement surface, and apply the rumble strips in accordance with sections 811 and 920 and the following:
1.Clean the pavement surface, making sure the pavement is dry and above the minimum temperature for thermoplastic placement in Table 811-2.
2.Apply the thermoplastic in accordance with the manufacturer’s recommendations and as shown in MDOT ’s Pavement Marking Standard Plans .
3.Apply glass beads as recommended by the thermoplastic manufacturer.
I.Raised Pavement Marker (RPM) Removal . Remove RPM with equipment approved by the Engineer . During removal, do not disturb pavement more than 3 inches below the surface or more than 3 inches from the perimeter of the marker casting. The Engineer will stop marker removal if damage to the pavement exceeds these limits. The Engineer will require patching, regardless of milling requirements, unless the Engineer determines that damaged areas do not pos e a hazard to traffic . Use an HMA mix approved by the Engineer to patch concrete and HMA pavement s that will receive a n HMA overlay. Use a prepackaged, hydraulic, fast -set material for patching structural concrete from the Qualified Products List for patching concrete pavement . MDOT Standard Specifications for Construction Section 811
8-71 Patch concrete pavement in accordance with the patch material
manufacturer’s specifications. Patch HMA pavement, not requiring overlay, with the epoxy adhesive used to attach raised pavement markers to the pavement. Clean and dispose of debris from RPM removal and patching operations.
J.Wet Reflective Liquid Applied Pavement Markings. Furnish and install WR optics and liquid applied pavement marking materials . Place the binder , beads , and WR optics in accordance with the manufacturer ’s recommendations and sections 811 and 920 .
K.Guide Line Pavement Markings. Provide all labor , material , and equipment necessary to prepar e pavement surface and layout and apply solid or dotted retroreflective guide line pavement markings . When using dotted guide lines to delineate vehicle movements, the guide lines must be recessed. Prepare pavement surfaces by using the following methods:
1.Remove all residue and debris resulting from the preparation work . Control and minimize airborne dust and similar debris generated by surface preparation and cleanup to prevent a hazard to motor vehicle operation or nuisance to adjacent property.
2.Do not damage transverse and longitudinal joint sealers on hot mix asphalt and PCC surfaces when performing removal and c leaning work.
3.Preformed tape markings must be ready for traffic immediately following surface preparation, application and tamping, and markings of other materials must be adequately protected until they can be crossed by traffic without tracking.
4.Replace or repair nonconforming material to the satisfaction of the Engineer, and at no additional cost to the Department. 811.04. Measurement and Payment Pay Item Pay Unit Pavt Mrkg, Waterborne, __ inch, (color) .................................................... Foot Pavt Mrkg, Waterborne, 2nd Application __ inch, (color) ........................... Foot Pavt Mrkg, Wet Reflective Waterborne, 2nd Application __ inch, (color) .................................................................. Foot Pavt Mrkg, Waterborne, for Rest Areas, Parks, & Lots, __ inch, (color) ............................................................................... Foot Pavt Mrkg, Regular Dry, __ inch, (color) .................................................... Foot Pavt Mrkg, Regular Dry, 2nd Application, __ inch, (color) .......................... Foot Pavt Mrkg, Sprayable Thermopl, __ inch, (color ) ....................................... Foot MDOT Standard Specifications for Construction Section 811
8-72 Pavt Mrkg, Thermopl, __ inch, (color) ........................................................ Foot
Pavt Mrkg, Thermopl, __ inch, Crosswalk ................................................. Foot Pavt Mrkg, Thermopl, __ inch, Stop Bar .................................................... Foot Pavt Mrkg, Thermopl, __ inch, Cross Hatching, (color) ............................. Foot Pavt Mrkg, Thermopl, Rumble Strip ........................................................... Foot Pavt Mrkg, Ovly Cold Plastic, __ inch, (color) ............................................ Foot Pavt Mrkg, Ovly Cold Plastic, (legend) ..................................................... Each Pavt Mrkg, Ovly Cold Plastic, (symbol) ..................................................... Each Pavt Mrkg, Ovly Cold Plastic, __ inch, C rosswalk ...................................... Foot Pavt Mrkg, Ovly Cold Plastic, __ inch, Stop Bar ........................................ Foot Pavt Mrkg, Ovly Cold Plastic, __ inch, Cross Hatching, (color) ................. Foot Pavt Mrkg, Ovly Cold Plastic, __ inch, Shadow Tape, Black ...................... Foot Pavt Mrkg, Ovly Cold Plastic, __ inch, Wet Reflective, (color) ................... Foot Pavt Mrkg, Ovly Cold Plastic, __ inch, Dotted Turning Guide Line, (color) ..................................................................................... Foot Pavt Mrkg, Polyurea, __ inch, (color) ......................................................... Foot Pavt Mrkg, Polyurea, (legend) .................................................................. Each Pavt Mrkg, Polyurea, (symbol) .................................................................. Each Pavt Mrkg, Polyurea, __ inch, Crosswalk .................................................. Foot Pavt Mrkg, Polyurea, __ inch, Stop Bar ..................................................... Foot Pavt Mrkg, Polyurea, __ inch, Cross Hatching, (color) .............................. Foot Pavt Mrkg, Modified Epoxy , __ inch, (color) ............................................... Foot Pavt Mrkg, Modified Epoxy , (legend) ........................................................ Each Pavt Mrkg, Modified Epoxy , (symbol) ........................................................ Each Pavt Mrkg, Modified Epoxy , __ inch, Crosswalk ........................................ Foot Pavt Mrkg, Modified Epoxy , __ inch, Stop Bar ........................................... Foot Pavt Mrkg, Modified Epoxy , __ inch, Cross Hatching (color) ..................... Foot Pavt Mrkg, Preformed Thermopl, (legend) ................................................ Each Pavt Mrkg, Preformed Thermopl, (symbol) ............................................... Each Pavt Mrkg, Preformed Thermopl, __ inch, Crosswalk ................................ Foot Pavt Mrkg, Preformed Thermopl, __ inch, Stop Bar .................................. Foot Pavt Mrkg, Preformed Thermopl, __ inch, Cross Hatching, (color) ............ Foot Pavt Mrkg, Preformed Thermopl, (route) Route Shield, __ foot by __ foot ...................................................................................... Each Pavt Mrkg, (binder), __ inch, Shadow Liquid, Black ................................... Foot Pavt Mrkg, Wet Reflective (binder) , __ inch, (color) ................................... Foot Pavt Mrkg, (binder), For On-Street Parking, __ inch, Whit e ....................... Foot Pavt Mrkg, (binder), __ inch, Solid Thru Guide Line, (color) ...................... Foot Pavt Mrkg, (binder), __ inch, Solid Turning Guide Line, (color) ................. Foot Pavt Mrkg, (material), __ inch, Dotted Thru Guide Line, (color) ................. Foot Rem Curing Compound, for Spec Mrkg ......................................... Square Foot Rem Curing Compound, for Longit Mrkg, __ inch ...................................... Foot Rem Spec Mrkg ............................................................................. Square Foot Rem Raised Pavt Marker .......................................................................... Each MDOT Standard Specifications for Construction Section 811
8-73 Recessing Pavt Mrkg, Longit ..................................................................... Foot
Recessing Pavt Mrkg, Transv ........................................................ Square Foot Recessing Pavt Mrkg, Guide Line .............................................................. Foot Scarification, for Polyurea Spec Mrkg ............................................ Square Foot Scarification, for Modified Epoxy Spec Mrkg ................................. Square Foot Witness, Log, $1, 250.00 .......................................................................... Dollar
A.General . The Engineer will not measure the skips in dashed lines . Unless otherwise included in the contract, t he cost of traffic control and mobilization is included in the unit prices for other pavement marking placement pay items. The cost of collecting and disposing of residue generated by the removal of pavement markings and curing compound is included in the unit prices for removal pay items. The cost of WR optics is included in the unit prices for the applicable pavement marking material. The Department will not pay separately for the contact cement and adhesives for longitudinal lines, legends, symbols, crosswalks, cross hatching, or stop bars. The Department will not pay for markings placed by equipment operated at speeds higher than the certified speed. The Department will not assess liquidated damages if the 5-day waiting period for placing low -temperature, waterborne paint is in effect and the project is complete. The Department will not assess liquidated damages if the 14-day waiting period for regular dry paint is in effect and the project is complete. Permanent pavement marking materials , temporary retroreflective pavement markings required for traffic control , removal of curing compound, removal of existing permanent pavement markings , and scarification of pavement markings will be paid for separately using the appropriate pay items .
B.Seasonal Limitations. The Engineer will apply price adjustment s as required by the contract only for the quantity of regular dry or low-temperature waterborne substituted for waterborne paint and placed outside seasonal and temperature limitations . The adjustment applies only to projects that have completion dates after October 1 or have approved extensions of time without liquidated damages beyond October 1. Contractors who are in liquidated damages between October 2 and April 30 are not eligible for the price adjustment. MDOT Standard Specifications for Construction Section 811
8-74 C. Sprayable Thermoplastic. When two applications of waterborne
pavement markings are substituted for a single application of sprayable thermoplastic due to placing 10,000 feet or less (per color) per work day, the two applications of waterborne are paid for as a single application of sprayable thermoplastic under the sprayable thermoplastic pay items in the contract.
D.Pavement Marking Removal . The Engineer will measure the full removal of special markings based on MDOT’s Pavement Marking Standard Plans . The Department will pay for partial removal of special markings based on the dimensions of the actual removal area. If full removal of pavement markings is required, the unit prices for Rem Spec Mrkg or Pavt Mrkg, Longit, 6 inch or Less Width, Rem , and Pavt Mr kg, Longit, Greater than 6 inch Width, Rem include the cost of the removal in accordance with subsection 812.04.N. If the Contractor removes multiple layers of pavement marking materials, the Department will not pay separately for material removed beyond t he first layer.
E.Curing Compound Removal . The unit price for Rem Curing Compound includes the cost of preparing new PCC for mark ing application by removing the curing compound. Measurement will be based on MDOT’s Pavement Marking Standard Plans .
F.Scarificati on. The unit price for Scarification, for Polyurea Spec Mrkg and Scarification, for Modified Epoxy Spec Mrkg includes the cost of preparing the pavement surface via shot blasting or grinding with non-milling teeth for new pavement markings where pavement m arkings of the same type are existing. Measurement will be based on MDOT’s Pavement Marking Standard Plans .
G.Recessing . The unit price for Recessing Pavt Mrkg, Longit; Recessing Pavt Mrkg, Transv and Recessing Pavt Mrkg, Guide Line includes the cost of laying out the exact location of the markings and all work as required to prepare (groove) the pavement surface for recessed pavement markings .
H.Thermoplastic Rumble Strips . The Engineer will measure each length of 6-inch by 3/8-inch thermoplastic material, both transverse and longitudinal, to determine the total length of Pavt Mrkg, Thermopl, Rumble Strip for payment.
I.Guide Lines . The unit price for Pavt Mrkg, Ovly Cold Plastic, __ inch , Dotted Turning Guide Line, (color) and Pavt Mrkg, (material), __ inch , Dotted Thru Guide Line , (color) will be for the footage of pavement MDOT Standard Specifications for Construction Section 811
8-75 marking material placed, not the full path of the turning guide line. Solid
guide line pay items are for the full path of the guide line.
J.Material Deficiency . The Engineer will compute the quantity of pavement marking material and glass beads applied per unit of measurement at the end of each work day . The Engineer may include an applied length of less than 10 miles in the next day ’s measurement . The Engineer will determine the material usage based on field measurements and the required application rate specified in Table 811-1. The Department will reduce the unit price for pavement marking material for material shortages in direct proportion to the deficient materi al quantity, up to 6% . If the daily deficiency of pavement marking material, or beads, is greater than 6% , the Department will consider the day ’s work unsatisfactory and will direct the Contractor to reapply the day ’s markings to the thickness required by the contract at no additional cost to the Department.
K.Raised Pavement Marker Removal . The unit price for Rem Raised Pavt Marker includes the cost of the required patching material.
Source: Michigan Standard Specifications for Construction, 2020 Edition. Pages 620–636 of 1,146.