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971 -7 . 8 Elongation : The stripes and markings shall have a minimum elongation of 25 % <br /> when tested in accordance with ASTM D 638 . , <br /> 9714 . 9 Plastic Pull test : The stripes and markings shall support a dead weight of 4 lb <br /> for not less than five minutes at a temperature range of 70 to 80°F . Rectangular test specimen <br /> size shall be 6 by 1 by 0 . 05 inch minimum thickness . <br /> t <br /> 9714 . 10 Pigmentation : The pigment shall be selected and blended to provide a material <br /> which is white or yellow conforming to standard highway colors through the expected life of the <br /> stripes and markings . <br /> 9714 . 11 Glass Spheres : The stripes and markings shall have glass retention qualities <br /> such that, when at room temperature a 2 by 6 inches specimen is bent over a 0 . 5 inch diameter <br /> mandrel axis , a microscopic examination of the area on the mandrel shall show no more than <br /> 10 % of the spheres with entrapment by the material of less than 40 % . The bead adhesion shall be <br /> such that spheres are not easily removed when the film surface is scratched firmly with a <br /> thumbnail . <br /> 971 -7 . 12 Standard Markings : The preformed materials for pavement stripes and <br /> markings shall have a service life of three year . The materials shall attain an initial <br /> retroreflectance of not less than 300 mcd/lx • m2 for white and contrast markings and not less than <br /> 250 mcd/lx • m2 , for yellow markings . The retroreflectance of the white , yellow and contrast <br /> pavement markings at the end of the three year service life shall not be less than 150 mcd/lx , m2 . <br /> All pedestrian crosswalks , bike lane symbols and messages in a proposed bike lane shall attain <br /> initial retroreflectivity of not less than 275 mcd/lx • m2 . <br /> 971 -7 . 13 High Performance Markings : The preformed materials for pavement stripes <br /> and markings shall have a service life of five years . The materials shall attain an initial <br /> retroreflectance of not less than 450 mcd/lx • m2 for white and contrast markings and not less than <br /> 350 mcd/lx • m2 for yellow markings . The pavement stripes and markings shall retain a minimum <br /> retroreflectance for two years of not less than 300 mcd/lx • m2 for white and contrast markings and <br /> not less than 250 mcd/1x , m2 for yellow markings . The retroreflectance of the white , yellow and <br /> contrast pavement markings at the end of the five year service life shall not be less than <br /> 150 mcd/lx • m2 . _ <br /> 971 -8 Two Reactive Component Materials For Traffic Stripes And Markings . <br /> 971 -8 . 1 General : Two reactive component materials intended for use under this <br /> Specification shall include , but not be limited to , epoxies , polyesters and urethanes . Upon curing, <br /> these materials shall produce an adherent, reflective pavement marking capable of resisting <br /> deformation by traffic . The manufacturer shall have the option of formulating the material <br /> according to his own specifications . However, the criteria outlined in this Specification and <br /> Section 709 shall apply regardless of the type of formulation used . The material shall be free <br /> from all skins , dirt and foreign objects . <br /> 971 -8 . 2 Composition * <br /> Component Test Method Criteria <br /> T102 , Type II Rutile <br /> (white material only) ASTM D 476 minimum 10 % by weight <br /> Volatile Organic Content, (VOC) ASTM D 3960 maximum 150 g/L <br /> 971 -8 .3 Physical Requirements : The material shall meet the following criteria : <br /> -231 - <br /> FPID (S) : 423186 - 1 - 58 - 01 <br />