+1 vote
in Geotechnical Engineering II by (93.7k points)
For sampling saturated cohesion-less soils _______ is inserted.

(a) inner liner

(b) oil

(c) trap valve

(d) wood

I had been asked this question in an interview.

This intriguing question comes from Soil Samples and Samplers topic in division Stabilisation of Soils, Site Investigation and Sub – Soil Exploration of Geotechnical Engineering II

1 Answer

0 votes
by (243k points)
The correct option is (c) trap valve

The best I can explain: For sampling saturated cohesion-less soils, a trap valve or a spring sample retainer is inserted in the drive shoe or the cutting edge. This helps to retain the sample when the sampler is raised.

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