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The free fall height of rammer in Modified Proctor test is __________ inches.

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in Geotechnical Engineering I by (102k points)
The free fall height of rammer in Modified Proctor test is __________ inches.

(a) 5

(b) 12

(c) 16

(d) 18

This question was addressed to me during an online exam.

My doubt stems from Modified Proctor Test and Harvard Miniature Compaction Test topic in portion Compaction of Geotechnical Engineering I

1 Answer

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Best answer
Correct option is (b) 12

Easy explanation: In Modified Proctor test, the layers of the specimen are tested with a free fall of rammer of weight 4.5 kg or 10 lb with the height of free fall being 18 inches. The free fall height of rammer in Standard Proctor test is 12 inches.

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