Altitudines omnium conclaviorum, quae oblonga fuerint, sic habere debent rationem, uti longitudinis et latitudinis mensura componatur et ex ea summa dimidium sumatur, et quantum fuerit, tantum altitudini detur.
The height of all apartments which are oblong must be so arranged that the length and breadth are added together; of this sum half is taken, and this gives the height.
final_alignments\Vitruvius_Architecture_Book_6.json