Pile

A pile is a foundation for a building. Piles are used when the soil is not strong enough to carry the weight of the building. The strength or bearing capacity of the soil can be measured using a cone penetration test. Historically, piles were wood, later reinforced concrete and prestressed concrete. Piles can be prefabricated and driven into the ground using a vibrator or a diesel pile driving rig, or can be formed in situ in a bore hole. Steel sheet piles can be used to construct retaining walls. See also: Geotechnical engineering Piles are another name for hemorroids.