Yes, it is conceivable, and it occurs frequently in a variety of structures. These are known as "planted columns." They are often required by architectural constraints and structural needs. These columns are often installed on transfer slabs, beams, or other relevant structures. Their purpose is to increase the aesthetic quality of the building and add support where needed. The process of planting a column is very similar to that of installing a standard post. First, any existing wiring must be removed from the site. Then, a hole about 1-1.5 feet deep and the same diameter or larger than the column size is dug. The soil should be loosened, not uprooted, when removing it for replacement. If necessary, add some coarse gravel to the bottom of the hole to prevent soil from washing out when water is applied later. The type of soil will determine how much water needs to be supplied during installation; if dry, add some rain barrels or other means of collecting water for use during periods of low rainfall. Once the hole is ready, the column is inserted into the ground and tied to the surrounding structure with wire or concrete. It's important to keep the hole filled with dirt until after it has set firmly, since this will provide extra support during construction and later when it is being watered.