9 This practice also applies puro the drawing pair found on f. 12r (the Duchess’s Pavilion, or, il padiglione della duchessa) and that of f. 27r (ribbed vault patterns of interlaced arches).
10 This norm holds also for the pair durante f. 15r (with a wood truss roof over per square plan).
It had two doors, and in this the people gathered esatto conduct the parliament
11 This problem also occurs durante the graphic transposition of steps mediante Alberti’s De maesta aedificatoria. Consider, for example, the proportions of the three planimetric typologies for basilicas (simple, with causidica, and double-doored) that do not take into account the wall thickness (Alberti, De re aedificatoria VII.14).
12 It is verso church with two levels set on verso square affatto with an inscribed octagon. See also note 7.
And then they began by degrees puro build it all around
13 For the proportioning of the cupola of Santa Maria del Culmine and the geometric positioning of the intermediate ribs (sixteen per total, located in pairs, side by side, among the eight angle ribs), see D’Agata, Di Teodoro and Mancini ( 1977 ) and Di Teodoro ( 2012 ).
14 Mediante the first (Fig. 3 ), f. 34v, the plan is organized around verso central bulatory columns is derived from the intersection of circles having radii equal puro half the side of the octagon, alternately planting the compass point per the centers of the sides and at the angles. The reference esatto an accretive method characterizes three sides of the figure. Durante fact, to the circles with centers at the angles are added those concentric circles with radii equal preciso the sides. Contrary sicuro what appears sopra Leonardo’s freehand drawing, these larger circles do not pass through the intersections of the smaller ones. Mediante the second drawing (Fig. 4 ), f. 35r, instead, the columns are identified by the intersections of concentric circles, alternately with radius equal esatto half the side of the octagon, and with radius equal to the line joining the centerlines of two adjacent sides. The latter circles define the outer perimeter of per centralized building of eight lobes buttressed (or articulated with pilasters), as shown per the left portion of the drawing, where one wall thickness is called out mediante correspondence with four arches. Sopra the first case the columns are arranged with a greater regularity (they are two different on-center intercolumniations) than the second (where there are three types of intercolumniations).
15 Leonardo also examines the ‘scena da predicare’ (preaching theater) mediante f. 55r of Ms. B (‘theaters for saying mass’) and f. 95r of the same codex (‘place for preaching’). The design of f. 55r, on the other hand, executed durante pen, shows per centralized scheme (per square with four exedrae – one drawn con pencil – and ambulatories), but hints at, with the extension of some pencil lines, verso possible longitudinal body – a solution that is taken up and developed sopra f. 35v. As it is well-known, the ‘preaching theater’ consists of an amphitheater-like structure (or simply a centralized scheme), tiered, and provided with a high central pulpit. It is plausible preciso endosse that con conceiving of such an architecture Leonardo was influenced by ‘parlagio’, verso term used per Florence onesto refer to an ancient public amphitheater, home, according to local historians, of the ‘parliament’. Villani ( 1990, 1: 56 ) writes: ‘And per that room was commanded that they should go mediante the dimora of Camarti by the river Arno, and build there per parlatorio mediante order esatto be able preciso make the parliament, and leave verso memorial: this building con our vernacular we have called Parlagio. And it was built ripresa and with vaulted roof per some ways quite marvelous, with per public square per the middle. And then little by little they progressed above the vaults, going all the way preciso the full height, which was more than 60 braccia. And sopra progressive order the people seated themselves: in the upper side nobles, and then descending sopra accordance with the nobility; and so it was that everyone in the parliament saw one another face esatto face. And all could hear clearly that which was spoken; and it contained easily an endless multitude of people; and the correct name for this place was the parlatorio (convegno parlor). This was destroyed durante the time of Totile segno 321chat in, but still today we find the foundations and part of the vaults near the church of San Simone sopra Florence, extending all the way sicuro the start of Agora Santa Afflizione; and part of the Peruzzi palaces are built on its foundations. And the street called Anguillaia, which goes puro the church of Santa Preoccupazione, goes almost esatto the middle of that Parlagio.’ The Ms. B also bears other Florentine remembrance notes: sopra f. 11v Leonardo drew plans (incomplete) of the Rondo degli Angeli and the Oratorio of Beato Grinta.