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The cone resistance is approximately equal to ______ times the penetration resistance N.

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in Geotechnical Engineering II by (93.8k points)
The cone resistance is approximately equal to ______ times the penetration resistance N.

(a) 10

(b) 20

(c) 30

(d) 40

I got this question during a job interview.

This intriguing question originated from Geophysical Methods in chapter Stabilisation of Soils, Site Investigation and Sub – Soil Exploration of Geotechnical Engineering II

1 Answer

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by (243k points)
Right answer is (a) 10

To explain: The cone resistance in kg/cm^2 is approximately equal to 10 times the penetration resistance N from the standard penetration test. The Dutch cone test is very useful in cohesion-less soils.

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