Bored Piles (Caissons)

Bored Piles, also known as drilled shafts, cast-in-place piles or caissons, are constructed by drilling and excavating a slender, cylindrical hole and backfilling it with reinforcing steel and concrete. Depending on the geotechnical conditions, a steel casing can be installed during drilling to hold back the sides of the excavation temporarily or permanently.

Advantages

• Caissons have a relatively large load bearing capacity. A single, large caisson can replace the need for several smaller piles and large pile caps.
• Caissons can be installed in most soil types and can be drilled into sound bedrock.
• Properties of excavated soils can be observed and compared to design data.
• Caisson construction generates less noise and vibration than other deep foundation