Concrete Columns

Crawl space girders or beams are sometimes supported by columns made from concrete blocks. The blocks are typically stacked on a concrete footing and held together with mortar. Once the column has been built and the mortar has cured, the extra space between the uppermost block and the floor girder above is filled with wooden spacers or “shims.” Because of the wait for the concrete footing and mortar to cure, this is a very slow, time-consuming process.

Since the completed column isn’t adjustable, additional shimming will be needed as the concrete column settles or the wood girder shrinks.

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