Micropiles (driven piles with no more than 300 mm in diameter/side) are nowadays wide-world used geotechnical structural elements. These elements are equally efficient for strengthening delicate existing foundations as well as for a broad range of soil improvement, as a base ground for new engineering structures. The most significant advantage of micropiles is their ability to be installed in an easy and efficient way and their great load bearing capacity. In the paper, three distinguished, theoretically and regionally different approaches are analysed treating the identical problem of pile capacity evaluation and using the same input data. Applied calculation procedures are carried out and analysed. Significantly different results are obtained and possible causes of their inconsistency are discussed.
Keywords: micropiles, structural integrity, geotechnical design