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The total blow required for the second and third 15 cm of penetration in standard penetration test is taken as ____________

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in Geotechnical Engineering II by (93.8k points)
The total blow required for the second and third 15 cm of penetration in standard penetration test is taken as ____________

(a) Seating drive

(b) Penetration resistance

(c) Overburden pressure

(d) Dilatancy/submergence

I got this question in a job interview.

Question is from Bearing Capacity topic in chapter Bearing Capacity of Geotechnical Engineering II

1 Answer

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by (243k points)
The correct answer is (a) Seating drive

To elaborate: In standard penetration test, the first 15 cm of drive may be considered to be a seating drive. The total blows required for the second and third 15 cm of penetration is termed as the penetration resistance N.

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