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
I quattro libri dell'architettura First book discusses building materials and techniques. It documents five classical orders (Tuscan, Doric, Ionic, Corinthian, composite) in all their parts (bases, columns, architraves, arches, capitals, trabeations), as well as discussing other building elements (vaulted ceilings, floors, doors and windows, fireplaces, roofs and stairs). The Second book covers the designs of private urban townhouses and country villas of the 1500s, in and around Venice, almost all designed by Palladio himself. This includes nine palazzi, 22 villas (13 of them completed, another 5 partly completed), and a series of unrealized projects. The plates of completed projects sometimes differ from the buildings