The standard penetration resistance N of a granular deposit is found to be 20. The soil can be classified approximately in terms of $ϕ$ and density index respectively as

- 1
  
  $20 °$ and 10% for very loose condition
- 2
  
  $32 °$ and 50% for medium condition
- 3
  
  $32 °$ and 30% for loose condition
- 4
  
  $38 °$ and 65% for dense condition

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