Consider the following statements related to to IRC recommendations for the CBR method of design (IRC : 37-1970):
1. The CBR tests should be performed on remoulded soils on the field.
2. For the design of new roads, the subgrade soil sample should be compacted at OMC to proctor density.
3. In new constructions, the CBR test samples may be soaked in water for four days period before testing.
Which of the above statements are correct?
1
1 and 2 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3