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These stacks are commonly three to 10 inches in diameter and also can be pierced to midsts upwards of 200 feet. For the most common type of mini piling, a hollow steel or mini piling services plastic shaft is either screwed or drilled right into the ground. Cement or concrete can then be poured in to form the pile, with the dirt sustained throughout by the steel shaft. This indicates that, unlike the conventional boring method, no additional supports are needed, even in weak dirt. Screw pile installations have likewise encompassed household applications, with lots of house owners selecting a screw stack over other alternatives.