This deep foundation method involves drilling into the earth with a hollow-stem auger equipped with a continuous helical flight. As the auger penetrates the soil, the spoil is transported upward along the flights. Upon reaching the desired depth, concrete is pumped through the hollow stem as the auger is slowly withdrawn. Reinforcement, if required, is then inserted into the freshly placed concrete. This process creates a cast-in-place concrete pile, ideal for supporting various structures.
Such cast-in-place piles offer several advantages, including rapid installation, minimal soil disturbance, and adaptability to various ground conditions. They are a cost-effective solution for a wide range of projects, from residential buildings and bridges to industrial facilities and retaining walls. This technique has evolved significantly since its inception, benefiting from advancements in drilling technology and concrete mix designs, contributing to its widespread use in modern construction.
