+1 vote
in Geotechnical Engineering II by (93.7k points)
The standard penetration test is performed in clear hole of _____________ mm in diameter.

(a) 10 to 30

(b) 30 to 50

(c) 55 to 150

(d) 150 to 1000

This question was addressed to me in my homework.

My question is based upon Geophysical Methods topic in portion 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) 55 to 150

For explanation: According to IS: 2131-1981, the standard penetration test is performed in clear hole of 55 to 150 mm in diameter. A casing or drilling mud is used to support the sides of the hole.

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