Much like an instruction manual laid bare to the public, Bertani wanted his own architectural specifications to be imprinted on the base of the inverted semi-column. Next to the windows on the ground floor, there are two epigraphs with quotations from Vitruvius's De Architectura, which Bertani himself referred to in his book Degli oscuri e difficili passi dell'opera di Vitruvio ("On the obscure and difficult stages in Vitruvius's Ionic works").