select a column of a certain height by the catalog of iron concrete products. People are lazy in listing catalogues. One girl studies the catalog for a long time, then asks, "There are many columns of this height, which one to take?" She says she can’t choose, help me.
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Dear lady, I would be confused too. I'm not a builder - a radio engineer, but I suspect that the columns are picked not only by height... What are the environmental conditions? Will there be vibrations and strikes? What is the expected service life of the building? It just came to mind. So you can even smell the column on the construction, you can even try the tooth.