Entablature being called petrification. The structure of the entablature varies with the three classical orders: Doric, Ionic, and Corinthian. In each, the proportions of the subdivisions (architrave, frieze, cornice) are defined by the proportions of the column in the order. In Roman and Renaissance interpretations, it is usually approximately a quarter of the height of the column. Variants of entablature that do not fit these models are usually derived from them. Pure classical Doric entablature is simple. The architrave, the lowest band, is split, from bottom to top, into the guttae, the regulae, and the taenia. The frieze is dominated by
Tuscan order frontage is a careful exercise in revivalism, there are minimal plain bases to the thick fluted columns and, despite having metope reliefs and a large group of sculpture in the pediment, there are no triglyphs or guttae. Nonetheless, despite these "Tuscan" aspects, the overall impression is strongly Greek and it is rightly always described as "Doric". Tuscan is often used for doorways and other entrances where only a pair of columns are required, and using another order might seem pretentious. Because the Tuscan mode is easily worked up by a carpenter with a few planing tools, it became part of