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What is the difference between “hammer efficiency” and “coefficient of restitution” when using Hiley’s formula in pile driving?

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Civil Engineering

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What is the difference between direct circulation drilling and reverse circulation drilling?

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Civil Engineering

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In modeling a non-rigid mat foundation by using elastic springs, should a uniform modulus of sub grade reaction be used along the whole base of mat?

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Civil Engineering

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What is the difference between capping beams and ground beams for piles?

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Civil Engineering

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Which one is a better choice, a large diameter piles or a system of several smaller piles with the same load capacity?

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Civil Engineering

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What are the problems associated with pre stressed concrete piles (Daido)?

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Civil Engineering

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For a rigid pile cap with vertical piles at the middle and raking piles at the sides, what is the pattern of load distribution of piles in such arrangement?

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Civil Engineering

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In Hiley’s formula for driven piles i.e. R=E/(s+0.5c), why is a coefficient of 0.5applied for the term elastic deformation of piles and soil?

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Civil Engineering

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