🕑 Reading time: 1 minuteFlexible pavement design by CBR method is used to determine the total thickness of pavement. Generally there are two methods to design the pavement from CBR (California bearing ratio) value. They are 1. CBR method recommended by California state of highways 2. CBR method recommended by IRC
CBR method recommended by California state of highways:
Data required for flexible pavement design:a. CBR value of soil subgrade b. CBR value of sub base course c. CBR value of base course d. Wheel load in KG or KN Wheel load is classified into three groups based on traffic conditions.
- Light traffic(3175 KG)
- Medium traffic(4082 KG)
- Heavy traffic (5443 KG)