A collapsible soil sub-grade sample was tested using standard California bearing ratio apparatus; and the observation are given below -
|
S. No. |
Load |
Penetration |
|
1. |
54.8 kg |
2.5 mm |
|
2. |
78.0 kg |
5.0 mm |
Taking the standard assumptions regarding the load penetration curve, CBR value of the sample will be taken as -
1
4.0%
2
4.5%
3
3.8%
4
5.0%