Latitudines autem earum ita oportere fieri videntur, uti, quanta altitudo columnae fuerit exteriores, tantam latitudinem habeant ab inferiore parte columnarum extremarum ad medias et a medianis ad parietes qui circumcludunt porticus ambulationes.
The width of the colonnades should be arranged as follows. Taking the height of the outer columns, this will give the width from the lower part of the outer columns to the middle columns and from the middle columns to the walls which surround the walks of the colonnades.
final_alignments\Vitruvius_Architecture_Book_5.json