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This study reviews the PG Grade Selection and proposes a low and high pavement design temperature equation based on air temperature and geographical latitude.
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PG Grade Selection • Low Pavement Design Temperature • Tsurf - 0.859 Tair + 1.7 • Tair = 1 day minimum air temperature • Note: currently under review • High pavement Design Temperature • T20mm = (Tair-0.00618Lat2 + 0.2289Lat + 42.2) x (0.9545) - 17.78 • T20mm= high design temp at a depth of 20 mm • Tair = 7 day average high air temp • Lat- geographical latitude in degrees