Caisson piling involves the manual excavation of soil until a pre-determined depth. As the manual excavation takes place, the walls of the excavated shaft are supported by casting a concrete lining.
Caisson piles can be used for most soil types, except on limestone-based foundations. Typically, caisson piling method is used in areas where large piling machinery cannot be used such as hillslopes, and are commonly required for construction of bridges and hill slope development.
Typical Method of Statement for Hand-Dug Caisson
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