A drilling crew set their equipment to perform a standard penetration test. After they lowered the sampler, connected the rods, and seated the hammer, the sampler sank prior to any hammer strikes. What would you record on the boring log?

A. No records needed
B. WOR
C. N=0
D. WOH

Question

01-11-2024
Engineering

College

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A drilling crew set their equipment to perform a standard penetration test. After they lowered the sampler, connected the rods, and seated the hammer, the sampler sank prior to any hammer strikes. What would you record on the boring log?

A. No records needed
B. WOR
C. N=0
D. WOH

Answer :

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Final answer:

On the boring log, you would record that no hammer strikes were performed and the sampler sank without resistance.

Explanation:

In a standard penetration test (SPT), the drilling crew sets up their equipment to measure the standard penetration resistance of the soil. This involves lowering the sampler into the ground, connecting the rods, and seating the hammer.

However, in the given scenario, the sampler sank prior to any hammer strikes. This indicates a failed test, as the sampler should have been driven into the ground by the hammer.

On the boring log, the drilling crew would record this failed test by indicating that no hammer strikes were performed and the sampler sank without resistance. This information is important for accurately documenting the results of the test and analyzing the soil conditions.

Learn more about recording on the boring log for a failed standard penetration test here:

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A drilling crew set their equipment to perform a standard penetration test. After they lowered the sampler, connected the rods, and seated the hammer, the sampler sank prior to any hammer strikes. What would you record on the boring log?A. No records neededB. WORC. N=0D. WOH

Answer :

Final answer:

Explanation:

Other Questions

A drilling crew set their equipment to perform a standard penetration test. After they lowered the sampler, connected the rods, and seated the hammer, the sampler sank prior to any hammer strikes. What would you record on the boring log?

A. No records needed
B. WOR
C. N=0
D. WOH