31_HWKTTE 4004c - 21 Pu = K sp Ru where Ksp (3-9) Static...

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21 u sp u R K P = (3-9) where K sp ‘Static Pile’ Correlation Factor Accounting for all Dynamic Energy Looses. For easy driving of piles with small area ratios, Paikowsky recommends a value of K sp smaller than 1.0, while for hard driving cases with large area ratios, the recommended K sp value must be larger than 1.0. A value of K sp equals 1 was used in our calculations. Wave Mechanics PDA method In the 1960’s a new method to determine the pile capacity was developed at the Case Institute of Technology in Cleveland, Ohio. This new method called Pile Driving Analyzer (PDA) is based on electronic measurements of the stress waves occurring in the pile while driving. Some advantages of dynamic pile testing are (GRL, 1996): 1. Bearing Capacity - The bearing capacity can be found at the time of testing. For the prediction of a pile’s long term bearing capacity, measurements can be taken during restriking (Beginning of Restrike – BOR) 2. Dynamic Pile Stresses – While the pile is driving the stresses within the pile can be monitored. This avoids any possibility of pile damage due to
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This note was uploaded on 10/19/2011 for the course TTE 4004c taught by Professor Hass during the Spring '11 term at University of Florida.

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31_HWKTTE 4004c - 21 Pu = K sp Ru where Ksp (3-9) Static...

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