Flat tube-ceiling, a beam hoist, and radial arch diagrams
Two blue-paper fragments with construction sketches, arched trusses and columns of figures
Two blue-paper fragments carry architectural and mechanical construction studies. A central sketch is captioned as a flat ceiling made of terracotta tubes (palco piano fatto di doccioni), and a figure beneath it is noted as a device for raising a beam. Around them are radiating fan diagrams within a quarter-circle and a semicircle and several latticed arched trusses drawn but not transcribed, together with columns of arithmetical figures at the upper left of the larger fragment. One fragment is marked as bearing no writing.
On this page
Flat ceiling made of terracotta tubes
The central drawing is captioned as a flat ceiling (palco piano) built of doccioni, hollow terracotta tubes laid to span a floor. It records a lightweight construction technique for a flat horizontal ceiling.
Device for raising a beam
The figure below the ceiling sketch is annotated as being for raising a beam (da tirare su una trave). It shows an arrangement of members and lines for hoisting a timber into place.
Radiating fan diagrams and latticed arch trusses
Both fragments carry radial fan diagrams set within a quarter-circle and a semicircle, their lines converging on a single point, alongside several latticed arched trusses. These drawings are not covered by the transcription and appear to study the geometry and framing of arches and vaults.
Columns of calculations
The upper left of the larger fragment carries worked figures including 144, 4 1/4, 20, 4 and 100, with 96, 192, 384, 128 and 400 below. They accompany the construction sketches as dimensional or quantity reckoning.