Building advice: timber, house orientation and walls
After Palladio, Pliny and Vitruvius: when to fell wood, which timbers last, and how to orient rooms
Folio 87r gathers building advice drawn from Palladio, Pliny and Vitruvius. It covers when to fell and season timber, which woods endure under water (willow, larch, alder, oak, olive) and which keep well covered in air (chestnut, beech, hornbeam, linden, fir, ash), and how to orient rooms so that south faces north and winter rooms are small and warm. It closes with rules on wall thickness against heat and cold, and on choosing a house's height between plain and mountain.
On this page
When to fell and season building timber
Following Palladio and Pliny, timber should be cut as far as the pith and left standing on its trunk so the sap drains, the first cut made in mid-autumn and the tree detached in mid-winter. Vitruvius instead wishes it cut at the start of autumn, before the west wind Favonius begins to reign.
Timbers for water and for covered use
Willow, larch, alder, oak and olive endure under water, but must be set there green and keep best barked and surface-charred. Chestnut, beech, white and black hornbeam, linden, fir and ash keep well covered in air and serve as keys and ties for walls.
Orienting summer and winter rooms
South rooms should face north and north rooms south, so that contraries temper the excess of heat or cold. The house is divided into a summer and a winter half, all vaulted where possible, the winter rooms small and south-facing and the summer rooms ample and north-facing.
Wall thickness and the height of the house
Walls that must resist heat should be far thicker than those against cold, since heat disaggregates and penetrates the pores of the walls while cold thickens the air so it spreads less easily. Houses should be of medium height: on a mountain dwell low, on a plain dwell high.
