DefinePK

Abstract

In this paper, data was collected from 21 pipe-pile projects constructed in Ohio (Khan, 2011). Data included the number of piles, restrike time, pile length, pile diameter, initial total capacity, restrike total capacity, and average clay and silt content along the pile length. The effect of including pile setup on the cost was investigated in terms of the reduction in the pile length. The percentage increase in pile capacity due to setup ranged from 6% to 167%; while the average for all investigated piles was 36%. As for the expected pile length reduction, from incorporating setup in the capacity calculations, it varied from 5% up to 67%. Another important factor that was investigated is the restrike time. It was found that there is no need to wait beyond 96 hours for restrike testing to achieve significant setup. It was concluded that the pile capacity increase due to setup was significant and worth including during the design stage of the project.