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Thermoplastic Thickness Measuring Device

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Equipment Procedure Flat Line Measuring Audible Cookies Transverse bars w/ Inverted Rib Thermo on FC-5 Topics that will be covered

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Step 1. Zero-out Gauges

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Step 2. Remove base-plate

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Battery Replacement

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1. Florida Method of Test for FIELD EVALUATION of TRAFFIC MARKING MATERIALS Designation: 5-541 2.Standard Specifications Section 711 3.Developmental Specs. Sections 701 & 702 Procedure References:

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Measuring Flat Line

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Center the gauge over the marking material in an area avoiding glass spheres and read the values of all three dial indicators.

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By procedure, the staff will take three measurements with them being at the beginning, middle and end of each one mile section of line type. Then average of the three location measurements shall be used for acceptance of the one mile section of line type (FM 5-541).

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Ocala Baseline Road SR 35 North BoundSouth Bound Dials Location 1 2 3 AVG. 80' North of Dogwood TRL Pass1st.180.216.1090.167.134.228.1420.168 2nd.097.156.0520.102.172.218.1080.166 3rd.136.182.0930.137.123.155.1430.140 4th.130.200.0400.123.118.142.1460.135 AVG.0.132AVG.0.152 Front of J.E.T.S. (address number 6249)1st.049.161.1020.104.169.270.1130.184 2nd.058.150.0930.100.152.252.1160.173 3rd.069.183.1180.123.139.266.1060.170 AVG.0.109AVG.0.176 80' North of Juniper Road1stOutside Line.046.150.1590.118.107.151.1060.121 2nd.071.170.1070.116.079.154.0850.106 3rd.145.188.1330.155.091.137.0690.106 AVG.0.130AVG.0.111 1stInside Line.123.172.1230.139.137.138.0830.119 2nd.084.205.1200.136.151.161.1140.142 3rd.108.188.0740.121.129.123.1040.119 AVG.0.132AVG.0.127 Target Thickness = 0.10 to 0.150 inch MAX THICKNESS = 0.150 inch RED TEXT = OUT OF TOLERANCE (OVER OR UNDER)Overall Thickness0.126Overall Thickness0.141

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Measuring Audible Cookies

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Problem: Cookies are too tall for device to measure.

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Solution: Take a reading across the cookie in the same direction as the line

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Then one right in front of or behind the cookie, add the two numbers together.

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Transverse Bars w/ Inverted Rib

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Apply base lines having a thickness of 0.079 to 0.120 inches, exclusive of the transverse audible bars, when measured above the pavement surface at the edge of the base line. The profiled baseline shall have a minimum height of 0.155 inches, when measured above the pavement surface at the edge of the inverted rib profile. The thickness in the bottom of the profile marking shall be 0.035 to 0.050 inches. The individual profiles shall be located transversely across the full width of the traffic stripe. Device can be used to measure this type of line.

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Thermo on FC-5

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Issue: Having trouble getting required thickness due to the road soaking up material.

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Solution: Pay close attention to final thickness measurement.

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Issues:

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Things to Remember Apply markings only to dry surfaces and when the ambient air and surface temperature is at least 50 deg and rising for asphalt surfaces and 60 deg and rising for concrete surfaces. (Dev. Spec. 702-4.1) Before applying traffic stripes over portland cement concrete surface, apply a primer, sealer or surface preparation adhesive. (Dev. Spec. 702-4.1)

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Presented by: Jack R. Davis District 5 Construction Support Specialist jack.davis@dot.state.fl.us 386-943-5463