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The sample in standard penetration test has inner diameter of _________ mm.

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in Geotechnical Engineering II by (93.8k points)
The sample in standard penetration test has inner diameter of _________ mm.

(a) 50.8

(b) 60

(c) 35

(d) 75

This question was addressed to me by my college director while I was bunking the class.

Question is taken from Geophysical Methods topic 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 (c) 35

For explanation: In the standard penetration test, thick wall split-tube samplers are used which has an inner diameter of 35 mm or 1.5 inches. The outer diameter of the sampler is 50.8 mm.

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