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Which of the following soil material is most...

Which of the following soil material is most preferred for the central core material of zoned embankment type dam?

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asked Nov 9, 2023 in Irrigation Engineering by Carter (75.2k points)

Which of the following soil material is most preferred for the central core material of zoned embankment type dam?

(a) Highly impervious clay

(b) Sands or silty clays

(c) Coarse sands

(d) Gravels

I had been asked this question in my homework.

I need to ask this question from Types of Earthen Dams topic in chapter Earthen and Rock Fill Dams of Irrigation Engineering

irrigation engineering
earthen and rock fill dams
types of earthen dams

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1 Answer

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answered Nov 16, 2023 by Greg (106k points)

The correct answer is (b) Sands or silty clays

The best explanation: Clay shrinks and swells and is highly impervious is not suitable. It is sometimes mixed with fine sand or fine gravel so as to make it a suitable material for the impervious central core. Coarse sands and gravels are used in the outer shell.

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