Attachment A.pdf

South Carolina Department of Transportation

STANDARD

SPECIFICATIONS

FOR

HIGHWAY

CONSTRUCTION

630.1 630.2.3

SECTION 630

PERMANENT RAISED PAVEMENT MARKERS

630.1 Description

This section contains specifications for the materials, equipment, construc tion, measurement, and payment for furnishing and installing durable, abra sion-resistant retroreflective pavement markers (RPM) at locations designated on the Plans and as directed by the RCE. Also included is protection of the RPM during installation.

630.2 Materials

630.2.1 General

Ensure that the RPM meets the requirements of ASTM D 4280and conform to the provisions in this section. Drawings of markers shown in the Plans are for illustrative purposes only and are not intended to specify any particular product.

630.2.2 Shape and Color

Provide RPM with a base approximately 4 inches x 4 inches or 5 inches X 2 inches both approximately o/a inch in height with 30-degree sloping sides (nominal dimensions). Make certain that the outer surface of the marker is smooth and all corners and edges exposed to traffic are rounded. Provide RPM of the color(s) indicatedon the Plans and with either one or two reflec tive faces as required on the Plans. When illuminated by automobile head lights, ensure that the reflective faces redirect light of the required color and as specified herein. Make certain that the color of the reflectorswhen illumi nated andwhen not illuminatedis similar. The color of RPMwill be evaluated by the Department,and off-colors or non-similarcolor sampleswill constitute grounds for rejection.

630.2.3 Physical Requirements

Provide RPM with a smooth exterior surface of the shell and contain one (mono-directional)or two (bi-directional)prismatic reflector faces, as required on the Plans, molded to reflect incident light and having a minimum surface area of 2.50 square inches.

2 Ensure that the markers have a hard, durable, abrasion resistant surface (untempered glass or a special abrasion resistant coating), bonded to the reflective face surface of the marker. The red lenses on two color units are exempt from this requirement.

3 Make certain that the abrasion resistant surface of the reflector lens can withstand radial cracking and show only concentric crackswhen damaged by impact of hard objectsembeddedin vehicle tires.

630.2.4 630.2.5.4

630.2.4 Samples

Twenty-five markers of each type selected at random from each shipment or lot will constitute a representative lot sample for testing by the OMR.

Markers undamaged from testing by the OMR will be available for the Con tractor to reclaim and use.

2 Ensure that 20 markers selected from the lot sample meet the requirements for the size and material for the reflective face surface for a lot or shipment to be accepted. However, if 19 markers meet this requirement, a resample may be allowed at the request of the Contractor. If all 20 markers of the resample meet the requirements for the size and material for the reflective face surface the lot or shipment will be accepted with the stipulation that if any deficient markers are detected during installation the remainder of the lot or shipment may be rejected.

630.2.5 Tests

630.2.5.1 General

The OMR will test the RPM samples in accordance with ASTM 0 4280.

630.2.5.2 Optical Test

Ten markers from each lot sample will be tested as prescribed in ASTM 0 4280. If all pass the optical test, the lot will be accepted.

2 If any fail, 10 additional samples will be tested. If any of the second 10 markers fail the optical test, a resample may be allowed if requested; how ever, if more than 2 markers from the original sample fail the optical test, no resample will be allowed, and the lot or shipment will be rejected. If 19 of the 20 markers comprising the resample pass the optical test, the lot or shipment will be accepted.

630.2.5.3 Abrasion Test

Three markers picked at random from each lot sample will be tested as prescribed in ASTM 0 4280. If all pass the abrasion test, the lot will be ac cepted.

2 If any marker fails the abrasion test, a resample may be allowed if re-quested. If any of the 3 markers tested from the resample fail the require ments, the lot or shipment will be rejected.

630.2.5.4 Impact Test

Three markers picked at random from the lot sample will be impact tested as prescribed in ASTM 0 4280. If all pass the impact test, the lot will be ac cepted.

2 If any marker fails the impact test, a resample may be allowed if requested.

If any of the three markers tested from the resample fail the requirements, the lot or shipment will be rejected.

630.2.5.5 630.4.1.3.1

630.2.5.5 Longitudinal Flexural Strength Test

Three markers pickedat randomfrom the sample lot will be load tested as prescribed in ASTM D 4280. Each marker must support a minimum load of 2000 pounds.

2 If only 2 of the 3 markers selected for strength testing meet the require-ments of these specifications,the lot or shipment may still be accepted pro vided 6 additionalmarkersselectedfrom the sample lot for strength testing all meet the requirements. If 2 or more of the original 3 markers fail the strength test the lot or shipmentwill be rejected.

630.2.5.6 Compressive Strength Test

Three markers picked at randomfrom the sample lot will be load tested as prescribed in ASTM D 4280. Each marker must support a minimum load of 6000 pounds.

2 If only 2 of the 3 markers selected for strength testing meet the require-ments of these specifications,the lot or shipment may still be accepted pro vided 6 additional markers selected from the sample for strength testing all meet the requirements. If 2 or more of the original 3 markers fail the strength test the lot or shipmentwill be rejected.

630.2.5.7 Manufacturer's QJC Test Report

Furnish the RCE4 copies of a notarizedcertified report from the manufac turer of the markersshowingthe resultsof its quality control tests.

630.3 Equipment

Ensure that the equipment necessary for the proper construction of the work is on site, in acceptableworking condition,and approvedby the RCE as to both type and conditionbefore the start of work under this section. Provide sufficient equipmentto enable prosecutionof the work in accordancewith the project scheduleand completionof the work in the specifiedtime.

630.4 Construction

630.4.1 Installation of RPM

630.4.1.1 Restrictions

No permanent raisedmarkersmay be installedbetweenDecember 15 and March 15 inclusive,exceptwith the written permissionof the RCE.

630.4.1.2 Location of RPM

Locate the lane line markers, edge line markers, center line markers, en trance and exit rampmarkersas shown in the Plansand typicals.

630.4.1.3 Method of Bonding RPMto Pavement

630.4.1.3.1 General

Markersmay be bondedto the pavementby usingeither the epoxymethod or the bituminous adhesive method. Ensure that the ambient temperature

630.4.1.3.1 630.4.1.3.3 and road surface temperature during application is at least 50°F for use of the epoxy method or 40°F for use of the bituminous adhesive method of bonding.

2 If the epoxy method is used, furnish the RCE 4 copies of a certification stating that the epoxy meets the requirementsof AASHTO M 237, Type 1. If the bituminousadhesivemethod is used, furnish the RCE4 copies of a certi fication stating that the bituminousadhesivemeets the requirementsof these specifications.

630.4.1.3.2 Epoxy Method

If the epoxy method of bonding RPM to the pavement is elected, use an epoxy adhesive that meets the requirementsof AASHTO M 237, Type 1. In addition to the manufacturer's recommendations,comply with the following requirements:

A. Maintain the temperature of the adhesive components at 60°F to 100°Fbeforemixing.

B. Just before use, mix ComponentsA and B in accordancewith manu facturer's recommendations.

C. Clean the road surface by sandblastingthe area to which the marker is to be bonded. Ensure that the sand is clean and dry. Make cer tain that the road surface where markers are to be placed is thor oughly dry beforeapplyingepoxy.

D. When markers are placed over existing traffic paint stripes, remove all old paint and primerdown to bare concreteor asphalt.

E. Ensure that the machine mixer and applicator are capable of accu rately and uniformlyproportioningComponentA to Component B in a volume ratio in accordancewith the manufacturer's recommenda tions.

F. Ensure that the mixing chamber producesthe mixed adhesivewith a uniformgray color with no visible evidence of streaks of either black or white on the surfaceor within the mixedadhesive.

G. Make certain that voids in a cured undisturbedsample 1/16 inch thick from the extrusionnozzledo not exceed4%.

H. Make periodic checks of the proportioning equipment to determine the actual volume ratio of ComponentA to B. Do this by placingcon tainers before the mixing chamber and measuringthe actual volume of ComponentsA and B dispensed.

630.4.1.3.3 Bituminous Adhesive Method

If the bituminousadhesivemethod of bonding the RPM to the pavement is elected, use a bituminoustype hot-meltadhesive that meets the requirements of these specifications.

Ensure that the adhesive is suitable for bonding ceramic and plastic mark ers to Portland cement concrete, asphalt concrete, and chip-seal road sur faces and is applicable when road surface and marker temperatures are in

630.4.1.3.3 630.5 the approximate range of 40°F to 160°F. Make certain that the composition of the adhesive is such that its properties do not deteriorate when heated to and applied at temperatures up to 425°F using either air or oil-jacketed melters.

3 Use adhesive packaged in self-releasingcardboard containerswith essen-tially flat and parallel top and bottom surfaces such that the packages stack properly. Ensure that each package has a net weight of either 50 or 60 pounds and weighs within 2 pounds of the stated weight. Make certain that the packaginghas self-releasingcardboarddividers that separate each pack age into sectionsweighing not more than 15 pounds each. Make sure each packageshowsthe following:

• Manufacturer'sName,

• NetWeight,

• Lot or BatchNumber,and

• The words "BituminousAdhesive for Pavement Markers" or similar wording identifyingthe contents.

630.4.1.3.4 Prequalification of Adhesive

Use adhesivesfrom manufacturersthat have had their adhesivessuccess fully tested by the National Transportation Product Evaluation Program (NTPEP) in compliancewith SCOOT Qualified Product Policy 42 and listed on SCOOT Qualified Product List 42.

630.4.1.4 Observation and Acceptance

The RPMwill be inspectedduring both daytime and nighttimeconditions to determine whether the intent of this specification has been achieved. Re move and replace markers failing to have satisfactory appearance in either daytimeor nighttimeconditionsat no additionalexpenseto the Department.

2 The final acceptanceof the RPMwill be delayed for a period of 180 days after the last date of marker placementto permit observationof performance.

Removeand replaceany marker that, in the opinion of the RCE, has not per formed satisfactorilyduring this 180-dayperiod due to defectivematerialsand workmanship in manufactureand application at no additional expense to the Department.

630.5 Measurement

The quantity for the pay item Permanent (Clear, Yellow,or RedlClear) Pave ment Markers (Mono-Directionalor Bi-Directiona/)- (4''X4'' or 5''X2'') is measured by each (EA) permanent raised mono-directionalor bi-directional retroreflec tive pavement marker of each color, type, and size in-place, complete and accepted.

2 The quantity of clear replacement reflectors for existing raised pavement markers is measured by each (EA) clear mono-directional raised pavement marker reflector in place, completeandaccepted.

3 Traffic control utilized during the performanceof raised pavement marker work is not measured under items covered by this section, but is included in

630.5 630.6 the item Traffic Control in accordance with Subsections 107.12 and 601.5.

4 Unless included in other pay items in the Contract, the work required to remove existing raised pavement markers is considered incidental work for raisedpavementmarker itemsand is not measuredseparately.

630.6 Payment

Payment for the accepted quantity for Permanent (Clear, Yellow, or RedlClear) Pavement Markers (Mono-Directional or Bi-DirectionaD - (4'X4" or 5'X2"J,measured in accordancewith Subsection 630.5, is determined using the contract unit bid price for the applicable item. Payment is full compensa tion for installing raised pavement markers as specified or directed and in cludes preparing pavement surface; providing and applying proper adhesive;

removing existing markers where required; removing and replacing unac cepted markers;and all other materials, labor, equipment,tools, supplies,and incidentals to fulfill the requirementsof the pay item in accordancewith the Plans, the Specifications,and other termsof the Contract.

2 Paymentfor the acceptedquantity for Clear Mono-DirectionalReplacement Reflectors, measured in accordance with Subsection 630.5, is determined using the contract unit bid price for the pay item. Payment is full compensa tion for furnishing and replacing raised pavement marker reflectors as speci fied or directedand includesprovidingan applyingadhesive; removalof exist ing reflectors(where required); installationof reflectors;and all other material, labor, equipment, tools, supplies, and incidentals necessary to satisfactorily completethe work.

3 Traffic control for surface preparationand the applicationand/or removalof raised pavement markers or replacement reflectors is included in the item Traffic Control in accordancewith Subsections 107.12and 601.6

4 Payment for each item includes all direct and indirect costs and expenses requiredto completethe work.

5 Pay items underthis section includethe following:

Item No. Pay Item Unit

6300005 Permanent Clear Pavement Markers Mono-Dir.- 4"X 4" EA

6300010 Permanent Clear Pavement Markers Mono-Dir.- 5"X 2" EA

6300029 Clear Mono-Directional Replacement Reflector EA

6301005 Permanent Yellow Pavement Markers Mono-Dir.- 4"X 4" EA

6301010 Permanent Yellow Pavement Markers Mono-Dir.- 5"X 2" EA

6301100 Permanent Yellow Pavement Markers Bi-Dir.- 4"X 4" EA

6301110 Permanent Yellow Pavement Markers Bi-Dir.- 5"X 2" EA

6302001 Permanent Red/Clear Pavement Markers Bi-Dir. - 4"X 4" EA