Some of this advice is reflected in Alberti's design for the facade of the Palazzo Rucellai in Florence (1446-51). To organize this facade, he applied superimposed Doric and Corinthian orders to demarcate the individual floors; this was the first use of the classical orders on a Renaissance domestic building. He raised the order of the ground floor on a high plinth scored into diamond shapes in imitation of Roman opus reticulatum, where diamond shaped masonry units were used as formwork for concrete walls. Here, however, the subdivision serves only as a surface texture reflective of antique practices.