ELIF - POLE VS PIER FOUNDATION

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    Valerie Galchenko

    Piles are drilled into the ground and poles are stood on base and mechanically fastened. 

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    Jackson Wall

    Pole is best for very steep slopes because it reduces the cut and fill dramatically.  Piles are driven into the ground and more specifically, frictional piles are mainly used when the frost depth is too low or drilling down too far to bedrock is not a cost effective option, piles are used in friction to provide a stable foundation.

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    Valerie Galchenko

    Bored piles = Replacement (pored in place on site) - less disruptive to the surrounding soils, generally have higher capacity than driven piles.

    Driven piles = Displacement (formed off-site at factory conditions) - pile compacts the adjacent soild masses during the installation and bearing capacity of the pile is increased, driven piles are usually appropriate for poor surface soils, normally in groups to transfer heavier loads to deeper rock layers 

    Micropiles are usually used for underpinning and difficult drilling situations, and are suitable for any rock or soil

     

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