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1 General Provisions 1 2 Terms and Symbols 3 2. 1 Terms 3 2. 2 Symbols 6 3 Field Sampling 7 T 0902¡ª2019 Approach in selecting sampling or measuring positions 7 T 0903¡ª2019 Sampling by coring or by test hole 9 4 Geometric Control 12 T 0911¡ª2019 Measurement of the dimensions of subgrade and pavement layers 12 T 0912¡ª2019 Measuring the pavement layer thickness by cutting or coring methods 18 T 0913¡ª2019 Measuring pavement layer thickness with ground-penetrating radar 20 T 0914¡ª2019 Measuring road alignment with Road Geometry Data Acquisition System (RGDAS) 24 5 Field Density 29 T 0921¡ª2019 Testing field density with sand cone method 29 T 0922¡ª2008 Testing field density with a nuclear density gauge 38 T 0923¡ª2019 Testing density with core cutter 44 T 0924¡ª2008 Testing field density of an asphalt layer by core drilling 50 T 0925¡ª2008 Testing asphalt density with non-nuclear density gauge 52 T 0926¡ª2019 Method for determining settlement difference of soil and rock fill embankment 57