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In Standard Proctor test, the free fall height is ________ inches.

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in Geotechnical Engineering I by (102k points)
In Standard Proctor test, the free fall height is ________ inches.

(a) 5

(b) 12

(c) 16

(d) 18

I have been asked this question in an interview for internship.

My doubt stems from Compaction Introduction topic in portion Compaction of Geotechnical Engineering I

1 Answer

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by (727k points)
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Best answer
The correct option is (b) 12

Explanation: In Standard Proctor test, the layers of the specimen are tested with a free fall of rammer of weight 2.5 kg or 5.5 lb with the height of free fall being 12 inches or 310 mm.

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