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Question

For conducting a Standard Proctor Compaction Test, the weight of hammer (P in kg), the fall of hammer (Q in mm), the number of blows per layer (R) and the number of layers (S) required are respectively.

A
P Q R S
5.89 550 50 3
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B
P Q R S
4.89 450 25 3
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C
P Q R S
3.60 310 35 4
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D
P Q R S
2.60 310 25 3
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Solution

The correct option is D P Q R S
2.60 310 25 3
The Indian Standard Equivalent of the Standard Proctor Test is called the light compaction test (IS : 2720 Part VII-1974). The values of the respective parameters of this test are :
P = 2.6 kg,
Q = 310 mm,
R = 25, S = 3
The Indian Standard Equivalent of the Modified Proctor Test is called the heavy compaction test (IS : 2720 Part VIII - 1983). The values of the respective parameters of this test are :
P = 4.9 kg,
Q = 450 mm,
R = 25, S = 5

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