In cases where the presence of groundwater makes it difficult to penetrate the mines and there are cobblestones, the remnants of old piles that make it difficult to drill for stuffed piles are found in soil strata, shell -on -shelves and even caissons used to eyeliner foundations. However, in modern practice, with complete mechanization of drilling operations, it is possible to give the indicated obstacles, and it will be much cheaper and safer for the updated building and workers to use stuffed piles.
