Before revision: This is the most widely used method for the design of flexible URL The CBR test was developed by the California Division of Highways to classify and evaluate soil-sub grade and base coarse materials for flexible pavements.
After revision: This is the most widely used method for the design of flexible pavement.California Bearing Ratio Test The CBR test was developed by the California Division of Highways to classify and evaluate soil-sub grade and base coarse materials for flexible pavements.