"[T]he work by two sixteenth century masters of stereotomic architecture – the Spanish architect (1505-1575) and the French architect Philibert De l’Orme (1515-1570) – is paradigmatic. Their cut-stone vaults and domes are an expression of the quest for the formal identification and definition of construction elements in keeping with the technical know-how and aesthetic canons of stereotomy. A comparison of two of their works is particularly interesting: the dome of the chapel of Salvador at Úbeda by Andrés de Vandelvira, built between 1536 and 1542, and the dome of the chapel at Anet by Philibert De l’Orme, built between 1548 and 1553. ...[T]he figurative solution adopted by De l’Orme... On a technical level, the juxtaposition of the decorative and the construction pattern is not casual, but geometrically controlled in order to optimise the production of the s by reducing to a minimum the number of “panneaux” needed to cut them. The system of ribbing, conceived according to the logic of this production process, is commensurate with the “metre” used in the wall assemblage and is consequently segmented in strict relation to the shape and dimension of the curved surface of the voussoirs that define the intrados of the dome."