Deviation of Position of Piles Foundation from Its Original Designed Location

Budi, Gogot Setyo and CHARLES, and WIJAYA, HENDRY CHRISTIANTO (2015) Deviation of Position of Piles Foundation from Its Original Designed Location. In: Proceedings 10th Indonesian Geotechnical Engineering Conference and 19th Annual Scientific Meetiing , 24-11-2015 - 24-11-2015, Jakarta - Indoensia.

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Abstract

The aim of this preliminary research is to study the precision of pile foundation position compared to its original predetermined location. The deviations of pile foundations (precast piles), which is defined as the lateral displacement of the pile head, were collected from as-built drawing documents that were prepared after the piling activity at each project has completed. The precision of the pile foundation position is evaluated using available Standards such as British Standard, Canadian Standard, and Indian Standard. Those three standards employing maximum pile head movement of 75 mm, except for Canadian standard that allows lateral dislocation up to 150mm, when the measurement were taken after the entire piling activity of a project has been done. The results of 19 projects that employing pile foundations with dimension ranging from 250 mm to 600 mm, show that about 40% pile with diameter of 600 mm and about 60% pile with diameter 500 mm deviated lateraly less than 75 mm. While for pile with diameter ranging from 250 mm to 450 mm, between 65% to 70% were driven in the tolerance of 75 mm from its original design location. In other words, it can be concluded that the deviation of pile location influenced by pile dimension. The bigger the dimension of piles the smaller the percentage of piles driven in the 75 mm tolerance from its designed location

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