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These stacks are usually three to 10 inches in size and also can be drilled to midsts upwards of 200 feet. For the most common type of mini piling, a hollow mini piling contractors north west, uk steel or plastic shaft is either screwed or pierced right into the ground. Grout or concrete can then be gathered to develop the heap, with the dirt supported throughout by the steel shaft. This means that, unlike the traditional boring technique, no additional assistances are required, even in weak soil. Screw pile installments have additionally encompassed residential applications, with numerous home owners selecting a screw heap over various other options.