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For alluvial soil, the normal scour depth can be calculated by ___________ formula.

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in Geotechnical Engineering II by (93.7k points)
For alluvial soil, the normal scour depth can be calculated by ___________ formula.

(a) Rankine’s formula

(b) Lacey’s formula

(c) Converse Labarre formula

(d) Terzaghi’s formula

This question was posed to me in quiz.

My question is from Analysis of Well Foundation topic in division Well Foundations of Geotechnical Engineering II

1 Answer

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by (243k points)
Right answer is (b) Lacey’s formula

The best I can explain: For alluvial soil mostly met with in North Indian Rivers, the normal scour depth can be calculated by Lacey’s formula:

RL = 1.35(q2/f)1/3.

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