LATEX PAVEMENT MARKINGS SECTION 860
542
860.1Description.
This work consists of providing and installing latex pavement markings.
860.2Materials.
A.Latex paint Section 1071.1.1
B.Glass beads Section 1071.1.2
860.3Construction.
860.3.1 Submittals.
A.Submit a schedule of operations for the engineer’s approval before starting any pavement
marking work. Submit the schedule 2 -weeks before the striping application. 860.3.2 Equipment.
A.Provide the engineer a ccess to the application equipment for inspection. Do not commence work
until equipment is approved by the engineer.
B.Keep certificate of analysis for pavement marking paint being applied by the equipment within the
vehicle cabin. Provide the certificate of analysis to the engineer upon request.
C.Provide vehicle mounted longitudinal line application equipment with t he following
characteristics:
1.Capable of applying approved pavement marking material in a manner that will meet the
requirements of the contract.
2.Capable of simultaneously applying centerline and edgeline markings at the width indicated in
solid or broken patterns or various combinations thereof.
3.Equipped with automatic electrically controlled skip line mechanism capable of retracing the
existing markings or applying new markings.
4.Capable of automatically dispensing glass beads onto the painted surface, at the required
application rate, by the pressurized gun method.
5.Equipped with at least one steerable gun carriage on the driver’s side and at least one on the
passenger side.
6.Equipped with a footage counter on each required paint gun, which automatically and
continuously measures the length of each line placed, to the nearest foot. Provide proof of calibration to the engineer upon request.
7.Equipped with usage counter, which quantifies the volume of material placed. Provide proof of
calibration to the engineer upon request.
8.Equipped with a hand gun to apply special markings.
LATEX PAVEMENT MARKINGS SECTION 860
543 9. Equipped with heating mechanism capable of heating material to the required application temperature.
10.Equipped with temperature gauges that have been calibrated within the past six months.
Provide proof of calibration to the engineer upon request.
11.Equipped with a transfer pump system on machine capable of transferring the paint from the
shipping containers at a rate of 25 gallons per minute.
12.Capable of holding 300 -gallons of each color paint and 1800 -lbs of glass beads.
13.Equipped with a citizens band transceiver for communication or other approved communication
device.
14.Mobile and maneuverable enough to produce straight lines and standard curves in true arcs.
15.Equipped with DE MUTCD compliant signage.
D.Clean all parts of the equipment of foreign or different colored material prior to introducing a new
material batch. 860.3.3 Pavement marking layout.
A.Perform pavement marking la yout as needed to ensure accurate placement.
B.Offset longitudinal lines at least 2 -inches from longitudinal pavement joints or seams.
C.Offset longitudinal lines at least 2 -inches to the inside of shoulder breaks of pavement.
860.3.4 Application.
A.Clean pavement surface of oil, surface treatment, curing compound, dirt, grease, concrete
laitance, and other contaminants to a width at least 4 -inches wider than the marking to be applied.
B.Ensure ambient and surface temperatures are at least 50 degrees F and rising, and in accordance
with the manufacturer's recommendations. If the manufacturer recommended temperature requirement for the pavement marking material application deviates from these specifications, the manufacturer's recommendations shall hold priority. Confirm the atmospheric and pavement surface conditions with the engineer prior to starting work.
C.Place a quality control strip as directed by the engineer at the beginning of each day’s operations
to demonstrate that the application equipment is working properly and applying markings as required. Repeat the demonstration whenever there is a change in equipment settings or as directed by the engineer when the quality of the line being applied is in question. Authorization to proceed will be given by the engineer when the quality control test indicates conformance. If the application of the control st rip is on the actual roadway, correct any application that is not in compliance with the contract.
D.Apply pavement marking material in accordance with the contract and the manufacturer’s
recommendations. Apply in accordance with the following provisions unless approved otherwise by the engineer.
1.Apply pavement markings in the general direction of traffic.
2.Apply at an application speed of no more than 10 miles per hour.
LATEX PAVEMENT MARKINGS SECTION 860
544 3. Dispense latex paint at a wet film thickness of 15 -mils and apply glass beads at a rate of 7 pounds per gallon of paint applied.
4.All necessary markings shall be installed before the end of the workday. Install the markings as
soon as possible after weather interrupts the work.
E.Protect the pavement markings for an adequate time to allow the markings to dry and become
track -free using a method approved by the engineer. Follow the manufacturer’s recommendations for track -free time.
F.Remove existing pavement markings that conflict with new or altered traffic patterns as well as
any layout markings installed that detract from the overall appearance or function of pavement markings in accordance with Section 868.
G.Request engineer to perform retroreflectivity testing once pavement marking at the location is
complete. 860.3.5 Evaluation and Correction.
A.The engineer will evaluate the pavement markings for defects after an observation period of 60 -
days from the date the pavement is opened to traffic. Time charges will not be assessed during the observation period provided all other work is complete. The engineer may waive a portion or all of the 60 -day observation period.
B.The engineer will inform the contractor of pavement markings that have failed and that require
corrective action.
C.Correct pavement marking defects as directed by the engineer within 30 days of receiving written
notification. Examples of pavement marking defects for latex pavement marking material include:
1.Insufficient retroreflectivty, glass bead coverage or bead retention.
2.Damage caused by a vehicle tracking over uncured pavement marking material.
3.More than 5 percent exposure of substrate in any 2000 -foot section of longitudinal marking.
4.Discolored marking when compared visually with color chips.
5.Longitudinal marking is more than 2 -inches out of place.
6.Insufficient pavement marking thickness.
7.Pavement marking variations more than 3/8 -inch from alignment within any 40 -foot section of
traveled way.
8.Less than 90 percent of material remaining for each individual symbol, transverse pavement
marking, or legends.
860.4Method of Measurement.
A.The Department will measure linear pavement markings as the number of linear feet of pavement
markings placed and accepted.
B.The Department will measure symbols and transverse pavement markings as the number of
square feet placed and accepted. Symbols and transverse pavement markings will be measured in accordance with the following square foot values:
1.Straight arrow symbol 12.50 ft²
LATEX PAVEMENT MARKINGS SECTION 860
545 2. Left and right arrow symbol 15.50 ft²
3.Combination arrow symbol 20.00 ft²
4."ONLY" legend 23.00 ft²
5."SCHOOL" legend 35.00 ft²
6."STOP" legend 23.50 ft²
7.“AHEAD” legend 40.00 ft²
8.Transverse line, 8 -inch 0.66 ft² / linear foot
9.Transverse line, 12 -inch 1.00 ft² / linear foot
10.Transverse line, 16 -inch 1.33 ft² / linear foot
11.Transverse line, 24 -inch 2.00 ft² / linear foot
12."RXR" railroad crossing symbol 69.00 ft²
13.Left and right 18 -foot lane reduction arrow symbol 40.90 ft²
C.The Department will measure bike, shared lane, pedestrian, and accessible parking space marking
as the number of square feet placed and accepted. Symbol and legend dimensions per the DE MUTCD as described:
1.Bike symbol helmeted bicyclist symbol with a 2' x 6' arrow symbol.
2.Pedestrian symbol walking pedestrian 4' x 8' with a 2’ x 6’ arrow symbol.
3.Accessible parking space marking 40" x 40".
4.Shared lane marking helmeted bicyclist symbol with 5" W chevrons.
860.5Basis of Payment.
A.The Department will pay the quantity of linear pavement markings at the contract unit price per
linear foot. Price and payment constitute full compensation for:
1.Performing pavement marking layout work;
2.providing and placing all materials;
3.preparing pavement, including sandblasting, sweeping, and cleaning or removal of curing
compound on PCC pavement;
4.protecting uncured pavement markings from vehicle damage; and
5.repairing defective work as directed by the Department.
B.The Department will pay the quantity of symbols and transverse pavement markings at the
contract unit price per square foot. Price and payment constitute full compensation for:
1.Performing pavement marking layout work;
2.providing and placing all materials;
3.preparing pavement, including sandblasting, sweeping, and cleaning or removal of curing
compound on PCC pavement;
4.protecting uncured pavement markings from vehicle damage; and
LATEX PAVEMENT MARKINGS SECTION 860
546 5. repairing defective work as directed by the Department.
C.The Department will pay the quantity of bike, pedestrian, and accessible parking space symbols at
the contract unit price per each. Price and payment constitute full compensation for:
1.Performing pavement marking layout work;
2.providing and placing all materials;
3.preparing pavement, including sandblasting, sweeping, and cleaning or removal of curing
compound on PCC pavement;
4.protecting uncured pavement markings from vehicle damage; and
5.repairing defective work as directed by the Department.
ITEM DESCRIPTION UNIT 860001 PERMANENT PAVEMENT STRIPING, LATEX, 6" LF 860002 PERMANENT PAVEMENT STRIPING, LATEX, 12" LF 860003 PERMANENT PAVEMENT STRIPING, LATEX, SYMBOL/LEGEND SF 860004 TEMPORARY MARKINGS, LATEX, 4" LF 860005 TEMPORARY MARKINGS, LATEX, 10" LF 860006 TEMPORARY MARKINGS, LATEX, 12" LF 86000 7 TEMPORARY MARKINGS, LATEX, SYMBOL/LEGEND SF 86000 8 TEMPORARY MARKINGS, LATEX, ACCESSIBLE PARKING SPACE MARKING EACH 86000 9 TEMPORARY MARKINGS, LATEX, PEDESTRIAN SYMBOL EACH 8600 10 TEMPORARY MARKINGS, LATEX, BIKE SYMBOL EACH 8600 11 TEMPORARY MARKINGS, LATEX, SHARED LANE SYMBOL EACH
Source: Delaware Standard Specifications for Road and Bridge Construction, 2025 Edition. Pages 552–556 of 779.