Coring

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Rock Core Samples

Rock coring is used to obtain in-situ rock / soil samples and strength parameters through tests such as the Standard Penetration Test (SPT). "Cylinder samples from 4 to 8 inches in diameter and 6 to 12 inches long... may also be obtained by jacking or otherwise pushing drive samples into exposed surfaces using a continuous steady pressure. Hydraulic power equipment may also be used to push Shelby tubes into exposed undisturbed soil to collect undisturbed samples, such as the sampler mounted on a backhoe."

Soil Sampling Tools

• Open-Drive and Piston Samplers
• Thin-Wall Open-Drive Samplers
• Piston-Drive Samplers
• Split-Barrell Samplers
• Double-Tube Soil Core Barrel (Dension Type)
• Rock Core Barrel Samplers

Rock Sampling Tools

• Air Percussion Samplers
• Wireline Samplers

Best Practices Resources

National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)

Citations:

Revision ID: 4055
Revision Date: 10/28/2022