A collapsible soil sub-grade sample was tested using Standard California Bearing Ratio apparatus, and the observations are given below:
|
Sl. No |
Load |
Penetration |
|
1 |
60.55 kg |
2.5 mm |
|
2. |
80.55 kg |
5.0 mm |
Taking the standard assumptions regarding the load penetration curve, the CBR value of the sample will be taken as
1
39%
2
40%
3
4.4%
4
5.5%