When the building process starts the foundation is the most important element of the whole construction. It need to be well planed, calculated so the foundation will keep the building safe and firm. The pile foundations are build with a number of relatively small-diameter piles which accommodate a practical driving tolerance.   The pile caps are consisting concrete pads or beams which are constructed at the head of the piles so they can provide a connection between the pile and super-structure. More, in the link bellow.

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