Ceiling by the damage from smoke from candles or a fireplace. Many historic buildings have celebrated ceilings. Perhaps the most famous is the Sistine Chapel ceiling by Michelangelo. Ceiling height may have psychological impacts. The most common ceiling that contributes to fire-resistance ratings in commercial and residential construction is the dropped ceiling. In the case of a dropped ceiling, the rating is achieved by the entire system, which is both the structure above, from which the ceilings is suspended, which could be a concrete floor or a timber floor, as well as the suspension mechanism and, finally the lowest membrane or
Primavera (painting) Three Graces of the "Primavera". (Kenneth Clark) The origin of the painting is unclear. Botticelli was away in Rome for many months in 1481/82, painting in the Sistine Chapel, and suggested dates are in recent years mostly later than this, but still sometimes before. Thinking has been somewhat changed by the publication in 1975 of an inventory from 1499 of the collection of Lorenzo di Pierfrancesco de' Medici. The 1499 inventory records it hanging in the city palace of Lorenzo di Pierfrancesco de' Medici and his brother Giovanni "Il Popolano". They were the cousins of Lorenzo de' Medici ("Lorenzo il