Glossary of Home Improvement Terms
Caisson
A type of pole that is inserted for the structural support of a future patio, garden wall, or other structure in
an area where unsatisfactory soil exists. The Caisson will rest on the underlying bedrock or on satisfactory
soil.
To construct the Caisson, a 10" or 12" diameter hole is drilled down into the earth to at least 3 feet into
bedrock. Two or more sticks of rebar, reinforcing bars, are inserted into the full length of the hole.
Concrete is then poured into the hole.
Also see Rebar.
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