ITEM 641 PAVEMENT 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 requirements 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.
Minimum
material performance requirements and chemical and physical properties are
stated in Item 740 and the Invitation for Samples
for the service test performed according to Supplement 1047.
Any
materials delivered without a TE-24 and applied without laboratory approval
shall be removed. Laboratory tested materials not meeting specifications shall
be removed from the project site.
Furnish
a material safety data sheet (MSDS) 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 MSDS 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 lines, 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 beginning 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 between dots for line extensions and in a 12-foot (3.6 m)
cycle consisting 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 applying
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 Engineer 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 improperly 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 marking 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 primer, 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 the 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
marked 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 prior 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 application 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:
1.
Measure and record application vehicle speed to nearest 0.1 MPH (0.16
km/h),
2.
Measure and record weight and/or volume amount of material used by color,
3.
Measure and record weight of glass beads,
4.
Measure and record pavement surface temperature,
5.
Measure and record air temperature,
6.
Measure and record dew point,
7.
Measure and record humidity,
8.
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 documentation 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
Department will provide a standard DLS spreadsheet, 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
standard DLS report format. The DLS report can be provided in one of the following methods,
which should be agreed upon at the preconstruction meeting:
1.
hand delivery of paper report
2.
fax delivery of paper report
3.
e-mail of Excel spreadsheet file
4.
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 standard DLS 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
standard DLS report format.
Each
DLS shall have an annual calibration 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 remove all debris from the
pavement in advance 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, also 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 improperly 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 lot 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:
A. Edge Lines. Place edge lines as continuous stripes
using the width specified. Locate the center of the stripe 6 inches (150
mm) from the edge of the pavement.
B. Lane Lines. Place lane lines using the width
specified, as white stripes between contiguous lanes of pavement carrying
traffic in the same direction. Place them as broken lines unless
specified solid. Offset lane lines to the left of the longitudinal joint,
if present, or the theoretical line lying between contiguous lanes, if a joint
is not present. Ensure that the nearer edge of the stripe is 2 inches (50
mm) to the left of the joint or line. Do not place lane lines through intersections.
C. Center Lines. Place center lines as single or double yellow
stripes between contiguous lanes of pavement carrying traffic in opposite
directions. Center line marking includes two-way left-turn lane striping
and the outline of left-turn islands. Make each stripe 4 inches (100 mm)
wide, solid or broken as specified.
D. Channelizing Lines. Place channelizing lines as continuous
white stripes, using the width specified.
E. Stop and Crosswalk Lines. Place stop lines as solid 24-inch (600 mm) wide
white stripes. Place crosswalk lines as solid 12-inch (300 mm) wide white
stripes.
F. Transverse/Diagonal Lines. Place transverse/diagonal lines as solid
24-inch (600 mm) wide stripes, of the color specified, and at an angle to the
direction of travel.
G. Curb and Island Marking. Prepare exposed surfaces and curbs and paved
islands according to 641.05. In addition,
remove and dispose of all visible loose or foreign material, including vegetation,
on and immediately contiguous to surfaces to be marked.
H. Symbol Markings. Place all railroad, school, bicycle and
handicap symbol markings using white markings. A railroad marking
includes the 16-inch (400 mm) crossbuck, two 72-inch
(1.8 m) “R”s, two 24-inch (600 mm) transverse lines,
and a stop line. A school marking includes the word “SCHOOL” and two
16-inch (400 mm) transverse lines. A shared lane marking includes
the bicycle symbol and two sharrows.
I. Parking Lot Stall Marking. Place parking lot stall marking lines as
continuous 4-inch (100 mm) wide white stripes.
J. Lane Arrows. Place lane arrows using white markings.
K. Words on Pavement. Place words on pavement using white markings.
L. Dotted Lines. Place dotted lines using the width and color
specified.
M. Yield Lines. Place yield lines as solid white 24-inch (600
mm) isosceles triangles pointing toward approaching traffic.
The term long
lines, when used in sections 642 through 648
includes edge lines, lane lines, center lines, and channelizing lines over
200 feet (60 m) long. The term auxiliary markings, when used in Items 642 through 648 includes channelizing
lines 200 feet (60 m) or shorter, stop lines, yield lines, crosswalk lines,
transverse lines, diagonal lines, curb markings, island markings, symbol
markings, parking lot stall markings, lane arrows, and dotted lines.
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 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
section 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
Department 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 material, 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.