Doric order The Roman architect Vitruvius, following contemporary practice, outlined in his treatise the procedure for laying out constructions based on a module, which he took to be one half a column's diameter, taken at the base. An illustration of Andrea Palladio's Doric order, as it was laid out, with modules identified, by Isaac Ware, in "The Four Books of Palladio's Architecture" (London, 1738) is illustrated at Vitruvian module. According to Vitruvius the height of Doric columns is six or seven times the diameter at the base. This gives the Doric columns a shorter, thicker look than Ionic columns, which have 8:1
Department of Lands building Street, and two others in Gresham Street (one originally used for carriage). The façades are of dressed Pyrmont sandstone with cornices and balusters at each floor level, with a dome and tower tops made from copper. The four façades are all richly decorated with classical motifs and statuettes and are dissimilar to each other. Barnet’s mix of the orders and their integration into the building is significant. For example, the lowest level of the building is adorned with Doric and Ionic pilasters, whereas Corinthian and Ionic ones are used above. The clock tower has an 'onion' copper dome which was