‹‹‹ Vitr. 5.9.3 | Table of Contents | Vitr. 5.9.5 ›››
4If Ionic columns be used, the shaft, exclusive of the base and capital, is to be divided into eight parts and a half, of which one is assigned to the thickness of the column. The base, with its plinth, is half a module high; and the formation of the capital is to be as shewn in the third book. If Corinthian, the shaft and base are to be the same as the Ionic; but the capital is to be proportioned as directed in the fourth book; and the addition on the pedestal is made by means of the scamilli impares, mentioned in the third book. The architraves, coronæ, and all the other parts, are set out in proportion to the columns as explained in the foregoing books.
4But if the columns are to be Ionic, let the shaft, excluding base and capital, be divided into eight and one half parts, and let one of these be assigned to the thickness of a column. Let the base, including the plinth, be fixed at half the thickness, and let the proportions of the capital be as shown in the third book. If the column is to be Corinthian, let its shaft and base be proportioned as in the Ionic, but its capital, as has been written in the fourth book. In the stylobates, let the increase made there by means of the “scamilli impares” be taken from the description written above in the third book. Let the architraves, coronae, and all the rest be developed, in proportion to the columns, from what has been written in the foregoing books.