railway RRB JE (CBT I + CBT II) Mock Test 2024 Soil Mechanics and Foundation Engineering Bearing Capacity
In standard penetration test the term "penetration resistance N" means:
1
The number of blows required to drive the sampler 15 cm beyond the seating drive
2
The number of blows required to drive the sampler 30 cm beyond the seating drive
3
The number of blows required to drive the sampler 45 cm beyond the seating drive
4
The number of blows required to drive the sampler 60 cm beyond the seating drive