Publication Abstract

Proceedings of DFI-India 2018: 8th Conference on Deep Foundation Technologies for Infrastructure Development in India, (DFI)

Alternative Piling Methods - Chances for Technical and Economical Solutions
Franz-Werner Gerressen

Everybody knows about piling using hydraulic drill rigs and using the so called Kelly drill mode. Kelly drilling has a lot of advantages as it can work with a wide range of tools facing almost all types of soil and rock. It can also deal with diameters up to 3.000 mm and bigger or depth of +100 m. But there is a big concern about Kelly drilling as the installation process is relatively slow. Therefore, alternative Piling Methods like Continuous Flight Auger Piles (CFA), Cased Continuous Flight Auger Piles (CCFA) and Full Displacement Piles (FDP) provide a lot of chances in terms of installation performance and therefore cost, and even more important, time saving potentials. The paper will show where these systems may be an interesting alternative to the traditional Kelly Drilling. Of course there are as well limitations in using these methods which should be known and considered. The paper will describe these methodologies, reference projects will allow showing the results in time and cost saving in using these methods, but it will also show the limitations for these methods.

 article #3167; publication #1050 (India2018)