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Identify the given pile driving formula. (a)Dutch formula

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Identify the given pile driving formula.

(a) Dutch formula

(b) Hiley formula

(c) Engineering News formula

(d) Ritter formula

This question was addressed to me by my college professor while I was bunking the class.

The query is from Pile Driving Formulas topic in chapter Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials

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Correct answer is (b) Hiley formula

Easy explanation: Above given formula is Hiley formula. This formula is widely used in determining the safe load on pile.

Where, e = efficiency of hammer.

K = coefficient of restitution.

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