What is function of soil as highway subgrade
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• Maintaining the subgrade above the highest ground water level • To avoid pavement damage caused by surface water from adjacent land • To reduce the chance of capillary water harming the pavement layers. • Maintaining the highway's design standards in terms of vertical alignment.
• Maintaining the subgrade above the highest ground water level
See less• To avoid pavement damage caused by surface water from adjacent land
• To reduce the chance of capillary water harming the pavement layers.
• Maintaining the highway’s design standards in terms of vertical alignment.