Standard Penetration Test (SPT) description

Standard Penetration Test (SPT) description

• A. Is an in-situ dynamic penetration test designed to provide information on the geotechnical engineering properties of soil
• B. Is a laboratory test to measure Atterberg limits
• C. Is a test to measure grain size distribution
• D. Is a test to measure pore pressure

Answer: (A)

The main idea here is an in-situ dynamic penetration test used to obtain geotechnical information about soil. The Standard Penetration Test involves driving a sampler into the soil in a borehole with a hammer and recording the number of blows required for a defined penetration, producing an N-value that correlates with soil resistance. This field test helps infer properties like relative density for sands and general strength or stiffness of soils, which are essential for foundation design and bearing capacity assessments. It is not a laboratory test for Atterberg limits, not a procedure to determine grain size distribution, and not a method to measure pore pressure.

The main idea here is an in-situ dynamic penetration test used to obtain geotechnical information about soil. The Standard Penetration Test involves driving a sampler into the soil in a borehole with a hammer and recording the number of blows required for a defined penetration, producing an N-value that correlates with soil resistance. This field test helps infer properties like relative density for sands and general strength or stiffness of soils, which are essential for foundation design and bearing capacity assessments. It is not a laboratory test for Atterberg limits, not a procedure to determine grain size distribution, and not a method to measure pore pressure.