... precise curves needed to build avault is a difficult business, especially if you only have stones and ordinary mortar to buildwith. You have to put up supporting timberformwork, known as centering, ... built212–16Baths of Caracalla, Rome, built298–306Baths of Diocletian, Rome,built 50 architecture ideas you really need to know Philip Wilkinson03 GothicIn the mid-12th century AbbotSuger of the ... theorders. The height of a column, for example, wasexpected to be in a certain ratio to its diameter, soit did not look too long and spindly or too shortand squat. So the height of a classical Greek...