Piling in April 2008

Pile foundation systems

Deep foundation. (2008, April 14). In Wikipedia, The Free Encyclopedia. Retrieved 19:44, April 18, 2008, from http://en.wikipedia.org/w/index.php?title=Deep_foundation&oldid=205520756

Foundations relying on driven piles often have groups of piles connected by a pile cap (a large concrete block into which the heads of the piles are embedded) to distribute loads which are larger than one pile can bear. Pile caps and isolated piles are typically connected with grade beams to tie the foundation elements together; lighter structural elements bear on the grade beams while heavier elements bear directly on the pile cap.

Drilled piles

Also called drilled piers or Cast-in-drilled-hole piles (CIDH piles) or Cast-in-Situ piles. Rotary boring techniques offer larger diameter piles than any  other piling method and permit pile construction through particularly dense or hard strata. Construction methods depend on the geology of the  site. In particular, whether boring is to be undertaken in ‘dry’ ground conditions or through water-logged but stable strata – i.e. ‘wet boring’.

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