703.03 Construction Requirements.
** Specify "A" or "B". *** Specify "Paint", "Plastic", "Tape", etc., only if required. TRAFFIC CONTROL MARKINGS AND LEGENDS
703.01 Description.
This Sec tion shall cover the work of placing permanent or temporary traffic control markings and legends at the locations shown on the plans or where directed by the Engineer. Preformed thermoplastic markings may be used for permanent striping, and for other circu mstances as designated by the Engineer. This Section shall also cover the removal of existing or temporary traffic control markings and legends.
703.02 Materials.
a.General. Materials shall be furnished in accordance with the requirements given in Sectio ns 856 and 857. The required dimensions, color, type of material and reflectivity will be shown on the plans. The required type of material will be designated by "Class" and "Type" in accordance with the requirements given Section 701 Class 1H, Class 2, an d Class 2T materials shall be in compliance with the formulations given in the tables in Section 856 for each class. Class 1, Class 3, Class W , Preformed Traffic Markings, and Drop On Glass Beads shall be one of the materials shown on List V -3, Temporary T raffic Marking Materials, and List V -4, Permanent Traffic Marking Materials. These lists are in the Department’s Manual, “Materials, Sources, and Devices with Special Acceptance Requirements”. Information concerning these lists is given in Subarticle 106.0 1(f) and ALDOT -355. Preformed traffic markings and legends shall also meet the requirements given in Article 856. 09. All preformed traffic markings and legends shall meet the dimensions as shown in the plans and shall meet the tolerance requirements given in Item 703.03(c)1.
703.03 Construction Requirements.
a.Acceptance Program for Traffic Marking Materials . The guidelines for the evaluation and acceptance of traffic marking materials are given in the procedure ALDOT -420 "Acceptance Program for Traffic Marking Materials". These guidelines shall be followed in the furnishing and placement of traffic markings and legends.
b.Temporary Traffic Markings and Legends . Temporary traffic control markings and legends shall be furnished and placed in accordance with all of the requirements given in Section 701 for Temporary Traffic Stripe except for the placement tolerances for length and width. The length of the markings and legends shall be no greater than 2 inches {50 mm} over or 1 inch {25 mm} under the required length. The width of the markings and legends shall be no greater than 1/2 of an inch {12 mm} over or 1/2 of an inch {12 mm} under the required width.
c.Permanent Traffic Markings and Legends .
1.Applicator Appl ied Traffic Markings and Legends. Permanent traffic control markings and legends shall be furnished and placed in accordance with all of the requirements given in Section 701 for permanent traffic stripe except for the following: • Any type of equipment may be used that produces acceptable results; • Class 2 thermoplastic shall be placed to produce a minimum uniform thickness of 0.125 inches {3.0 mm}. • The length of the markings and legends shall be no greater t han 2 inches {50 mm} over or 1 inch {25 mm} under t he required length. • The width of the markings and legends shall be no greater than 1/2 of an inch {12 mm} over or 1/2 of an inch {12 mm} under the required width • Beads may be hand placed.
703.03 Construction Requirements.
2.Preformed Traffic Markings and Legends.
a.General All preformed traffic markings and legends shall be applied in accordance with the manufacturer’s recommendations. Preformed thermoplastic may be applied to asphalt and concrete surfaces. Asphalt pavement shall be allowed to cure for a period of 14 calendar days befor e the application of the thermoplastic. Concrete pavement shall be allowed to cure for a period of 30 calendar days before the application of the thermoplastic. All preformed traffic markings and legends shall be a minimum uniform thickness of 0.125 inches {3.0mm}.
b.Surface Preparation Prior to the Application of Preformed Thermoplastic. Areas to be striped shall be thoroughly cleaned of all dirt, oil and other debris in a way that will not damage the pavement surface. Curing compound on concrete surfaces shall be removed by grinding, wire brushing, sand blasting or other effective means. Striping shall not begin until the Engineer has inspected the pavement surface and has informed the Contractor that striping may begin.
c.Weather Conditions for the App lication of Preformed Thermoplastic. Preformed thermoplastic shall not be placed during rain or mist or if the pavement surface is wet. All preformed thermoplastic markings and legends shall be placed per the manufacturer’s recommended directions. The En gineer shall be furnished a copy of these recommendations for installation inspection purposes.
d.Composition of Preformed Thermoplastic. The preformed thermoplastic shall consist of high quality materials, pigments and glass beads or other reflective mat erial uniformly distributed throughout their cross -sectional area, with a reflective layer of spheres or other reflective material embedded in the top surface.
3.Specialty Traffic Markings and Legends. Specialty Traffic Markings and Legends shall be placed where indicated on the plans and in accordance with the Special Drawings or plan details. Specialty Traffic Markings and Legends shall meet all of the requirements given in Subarticle 703.02(a) and Item 703.03(c)2.
d.Retroreflectivity of Traffic Mar kings and Legends. The white and yellow pavement markings shall attain an initial retroreflectance of not less than 250 mcd/lx·m2. All pedestrian crosswalks, bike lane symbols and messages in a proposed bike lane shall attain initial retroreflectivity of not less than 250 mcd/lx·m2. The Engineer will measure the retroreflectivity of emplaced preform thermoplastic material for each color at 5 random locations throughout the project selected in accordance with the requirements given in ALDOT Procedure 210. If the average of the 5 retroreflectivity measurements is 85 % of the target retroreflectivity, or greater, the stripe will be accepted without a price adjustment for retroreflectivity. If the average of the 5 retroreflectivity measurements is less than 85 % and greater than 50 % of the target retroreflectivity, the stripe will be paid for at a percentage equal to the percentage determined from the measurements. For example, if the average of the measurements is 65 % of the target retroreflec tivity, payment for the stripe will be 65 % of the contract unit price. If the average of the 5 retroreflectivity measurements is 50 % of the target retroreflectivity, or less, the stripe shall be removed and replaced without extra compensation. Any portio n of the stripe of the stripe that is determined by the Engineer to be noticeably inconsistent with the overall striping and measures less than 50 % of the target retroreflectivity shall be removed and replaced without extra compensation. Retroreflectivity measurements will be made in accordance with the requirements given in ALDOT - 422 with the exception of the sampling frequency. Measurements will be made between 7 and 30 calendar days after the completion of the placement of all stripe.
e.Removing Marki ngs or Legends . The removal of traffic markings and legends shall be done in accordance with the requirements given in Section 701.
705.01 Description.
703.04 Method of Measurement.
The area of Traffic Control Markings or Legends (Items 703 -A, 703- B, 703- H, and 703- I) complet e in place and accepted will be the sum of the areas shown on the plans for each marking and legend constructed within the required placement tolerance. The Removal of Traffic Control Markings or Legends (Item 703 -C) shall be measured in the same manner a s prescribed above except that it shall cover only the area from which the markings were actually removed. The area of Temporary Traffic Control Markings or Legends, (Items 703 -D and 703- E) complete in place and accepted, will be the sum of the areas shown on the plans for each marking and legend constructed within the required placement tolerance. No measurement for payment will be made for the removal of temporary markings or legends, the removal of such being classified as incidental to the Items of Temporary Traffic Control Markings and Temporary Traffic Control Legends.
703.05 Basis of Payment.
a.Unit Price Coverage . The accepted square feet {square meters} of Traffic Control Markings or Legends, Items 703 -A, 703-B, 703- H, and 703- I, measured as provided above, will be paid for at the contract unit price bid which shall be full compensation for the item complete in place and includes the cleaning of the pavement, furnishing and applying the markings or legends, and for all materials, equipment, to ols, labor and incidentals necessary to complete the work. The accepted square feet {square meters} of Traffic Control Markings or Legends Removed, Item 703-C, measured as provided above, will be paid for at the contract unit price bid which shall be full compensation for the item complete in place and includes traffic control for removal, all necessary materials, equipment, tools, labor and incidentals necessary to complete the work. The accepted square feet {square meters} of Temporary Traffic Control Markings or Legends, Items 703-D and 703- E, measured as noted above, will be paid for at the contract unit price bid which shall be full compensation for the item complete in place and includes the cleaning of the pavement, furnishing and applying the marking s or legends, traffic control for placing, and for all materials, equipment, tools, labor and incidentals necessary to complete the work.
b.Payment will be made under Item No .: 703-A Traffic Control Markings, Class ____ , Type ____ - per square foot {square meter} 703-B Traffic Control Legends, Class ____ , Type ____ - per square foot {square meter} 703-C Removal of Traffic Control Markings or Legends - per square foot {square meter} 703-D Temporary Traffic Control Markings - per square foot {square m eter} 703-E Temporary Traffic Control Legends - per square foot {square meter} 703-H Specialty Traffic Control Markings – per square foot {square meter} 703-I Specialty Traffic Control Legends – per square foot {square meter} SECTION 705 PAVEMENT MARKERS
705.01 Description.
This Section shall cover the work of furnishing and installing pavement markers of the Class and Type specified by the plans or proposal, at the locations designated on the plans or directed by the Engineer, all in conformity with the plans and these Specifications. Pavement markers shall be divided into Classes and Types as noted. Class "A" - Reflective markers. Type 1 - Mono -directional. 1-A. 1 White reflector face with the marker body other than t he reflector face shall be white, silver white or a neutral color. 1-B. 1 Yellow reflector face with the marker body other than the reflector face shall be yellow in color. Type 2 - Bi-directional. 2-A. 2 White reflector faces with marker body other than t he reflector faces shall be of a white, silver white, or a neutral color.
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 596–597 of 934.