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
Tatton Hall design, also with seven bays, and it has a pedimented porch with two columns. The east front has five bays with Corinthian pilasters on a slightly projecting plinth and an entablature above. The family wing has seven bays. The south front has a Tuscan colonnade on the lower storey and an Ionic colonnade, verandah and balustrade above. Not all of the rooms are open to the public. The major rooms which are open are described below. The Entrance Hall is in three bays. It is decorated in neoclassical style with a marble floor, red porphyry Ionic columns and a geometric