As for architecture, although he put his hand to but few works, yet in these he showed no less judgment than in sculpture; particularly in three ceilings which were made at very great expense, under his guidance and direction, in the Palace of the Signoria at Florence. The first of these was the ceiling of the hall that is now called the Sala de' Dugento, over which it was proposed to make, not a similar hall, but two apartments, that is, a hall and an audience chamber, so that it was necessary to make a wall, and no light one either, containing a marble door of reasonable thickness; wherefore, for the execution of such a work, there was need of intelligence and judgment no less than those possessed by Benedetto. Benedetto, then, in order not to diminish the said hall and yet divide the space above into two, went to work in the following manner. On a beam one braccio in thickness, and as long as the whole breadth of the hall, he laid another consisting of two pieces, in such a manner that it projected with its thickness to the height of two-thirds of a braccio. At the ends, these two beams, bound and secured together very firmly, gave a height of two braccia at the edge of the wall on each side; and the said two ends were grooved with a claw-shaped cut, in such a way that there could be laid upon them an arch of half a braccio in thickness, made of two layers of bricks, with its flanks resting on the principal walls. These two beams, then, were dove-tailed together with tenon and mortise, and so firmly bound and united with good bands of iron, that out of two there was made one single beam. Besides this, having made the said arch, and wishing that these timbers of the ceiling should have nothing more to sustain than the wall under the arch, and that the arch itself should sustain the rest, he also attached to this arch two great supports of iron, which, being firmly bolted to the said beams below, upheld and still uphold them; while, even if they were not to suffice by themselves, the arch would be able--by means of the said supports which encircle the beams, one on one side of the marble door and one on the other--to support a weight much greater than that of the partition wall, which is made of bricks and half a braccio in thickness. What is more, he had the bricks in the said wall laid on edge and in the manner of an arch, so that the pressure came against the solid part, at the corners, and the whole was thus more stable. In this manner, by means of the good judgment of Benedetto, the said Sala de' Dugento remained as large as before, and over the same space, with a partition wall between, were made the hall that is called the Sala dell' Orivolo[28] and the Audience Chamber wherein is the Triumph of Camillus, painted by the hand of Salviati. The soffit of this ceiling was richly wrought and carved by Marco del Tasso and his brothers, Domenico and Giuliano, who likewise executed that of the Sala dell' Orivolo and that