A diesel hammer (Delmag D12) with a maximum energy rating of 30.0 kN?m and hammer efficiency of
Question:
A diesel hammer (Delmag D12) with a maximum energy rating of 30.0 kN?m and hammer efficiency of 85% is used to drive a 15 m long concrete pile having a square cross section of 400 mm 3 400 mm. The following data are given:
● Weight of the ram = 12.2 kN
● Weight of the pile cap = 4.0 kN
● Coefficient of restitution = 0.35
● Unit weight of concrete = 24.0 kN/m3
To derive an allowable load-carrying capacity of 400 kN from the pile, based on modified ENR formula and with factor of safety of 4, what should the set S be?
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Given data Maximum rated energy 30 kN Cm Efficiency of hamme...View the full answer
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Related Book For 
Principles Of Foundation Engineering
ISBN: 9781337705028
9th Edition
Authors: Braja M. Das, Nagaratnam Sivakugan
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