Estimation of pile bearing capacity of cast-in-place screwed piles

This report presents the results of a research project in which the characteristic correlations between the load-bearing capacity of cast-in-place screwed piles and the measured cone resistances in Cone Penetration Tests (CPT) are measured. The main goal of the extensive analytical and statistical analyses was to deduce empirical bearing capacity parameters. For this purpose the measurement values from 58 examples of statical pile load tests on Atlas piles were considered. As a result, the reliability of the new design recommendation was proven under comparable conditions by means of statical pile load tests. Tabular values were determined for simple and rapid design and for the calculation of costs to be applied in the construction industry.