Drilled PiersDrilled piers, also called drilled shafts or caissons, are large potential, cast-in-area deep foundation elements. They could vary in diameter from 24 to 144 inches and might be installed in an array of soil and rock situations. Dependant upon the mechanism of load transfer from pile on the soil, https://bjorkd680zaa2.angelinsblog.com/31388883/the-definitive-guide-to-drilled-pile-foundations-bd