Structural vertical component fabricated in natural stone according to any specific dimension, designed as support to arches or lintels and usually rectangular or circular section. Dimensions are length, width and height; in case of round columns dimensions are height and the diameter of the section. In both cases dimensions should be reported in this established order. Its geometry can be highly variable depending on the design. Columns are divided in three parts: base, shaft and capital. An erection drawing is required for Columns and Pillars fabrication.