4.4 Deep(Pile)foundations Piles are relatively long and slender members used to transmit foundation loads through soil strata of low bearing capacity to deeper soil or rock having a higher bearing capacity.The method by which this occurs is the basis of the simplest pile type classification.We have two main pile types: 1. End-bearing piles PILES SOFT SOIL ROCK 2 Friction(or floating)piles PILES SOFT SOIL Strength with depth For both pile types a further distinction is required based on their method ofinstallation a. Driven(or displacement)piles: These piles. re-formed before beir driven acked gene ground. b Bored piles: For these piles a hole is first bored in the ground, and the pile is then usually formed in the hole. 4.4 Deep (Pile) foundations Piles are relatively long and slender members used to transmit foundation loads through soil strata of low bearing capacity to deeper soil or rock having a higher bearing capacity. The method by which this occurs is the basis of the simplest pile type classification. We have two main pile types: 1. End-bearing piles 2. Friction (or floating) piles For both pile types a further distinction is required based on their method of installation. a. Driven (or displacement) piles: These piles are generally pre-formed before being driven, jacked, screwed or hammered into the ground. b. Bored piles: For these piles a hole is first bored in the ground, and the pile is then usually formed in the hole. ROCK PILES SOFT SOIL PILES SOFT SOIL Strength increases with depth