đStandard Penetration Test (SPT) vs Cone Penetration Test (CPT)
đSPT and CPT are two important in-situ soil investigation methods used in geotechnical engineering to determine soil properties and evaluate ground conditions before construction.
đ´ Standard Penetration Test (SPT):
- Uses a split-spoon sampler and hammer.
- Measures soil resistance through the N-value.
- Provides disturbed soil samples.
- Commonly used in foundation investigations.
đľ Cone Penetration Test (CPT):
- Uses a cone-shaped probe pushed into the ground.
- Measures cone resistance and sleeve friction.
- Provides continuous soil profile data.
- Useful for evaluating soil stratification.
đĽKey Difference:
SPT measures resistance through hammer blows, whereas CPT measures resistance during continuous cone penetration.
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