Martin Hayden, Grund, Pfahl und Sonderbau. This paper was first published in GE’s December 2013 issue.
In times of stringent budgets and deadline pressure, it is becoming more important to have efficient and cost-saving test methods of calculation input parameters for measuring pile bearing capacity on site.
If available soil condition data is not sufficient or inconclusive, it is general practice to use standardised (minimum) bearing capacity parameters for planning foundations. This may result in over- or under-estimation of pile bearing capacity parameters, particularly when taking together toe resistance and shaft friction. For maximum economic optimisation, the individual parameters relevant for measuring need to be determinable separately.