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Subgrade shall be well consolidated and compacted each with a camber of 1 in 60.

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Subgrade shall be well consolidated and compacted each with a camber of 1 in 60.

(a) True

(b) False

This question was addressed to me in class test.

Question is taken from General Specifications of Modern Road topic in division Specifications, Estimation of Quantities of Materials and Transport of Civil Engineering Drawing

1 Answer

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Correct answer is (a) True

Easiest explanation: Subgrades are commonly compacted before the construction of a road, pavement or railway track, and are sometimes stabilized by the addition of asphalt, lime, portland cement or other modifiers. The subgrade is the foundation of the pavement structure, on which the subbase is laid.

The load-bearing strength of subgrade is measured by California Bearing Ratio (CBR) test, falling weight deflectometer back calculations and other methods.

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