Inspecting Thermoplastic Pavement Markings
{"Image DocumentName": "Inspecting Thermoplastic Pavement Markings", "Image ImageDescription": "Audible/Vibratory Markings. Retroreflectivity. 300 \u2013 white and yellow. Thickness. Base Line: 79 to 120 mils. Requires transverse bar/bump/cookie \u2013 min height 0.45 inches or 450 mils, including base line. The audible vibratory markings and wet weather markings have a different base line thickness. Audible and vibratory markings base line thickness is 79 to 120 mils and requires transverse audible bars (bumps/cookies). Minimum height on audible bars: 0.45 inches, includes base line. 4.1 Thickness: Measure the thickness of thermoplastic striping using an apparatus. employing three dial indicators with the measuring points spaced 2 \u00bd. inches apart (see Figure 1). Center the thickness gauge over the marking. material in an area avoiding glass spheres and read the values of all three. dial indicators. The location thickness measurement is the average of the. three dial indicators. Take one measurement at the beginning, middle, and end of each one mile section of line type (i.e. color, solid, broken/skip). The average of the three location measurements shall be. used for acceptance of the one mile section of line type. Thermo Cookie. Thermo Bump.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}