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
Sistine Chapel Choir Thus the ""magister capellae"" came immediately after the cardinals, followed, in the order given, by the ""sacrista"", ""cantores"", ""capellani"" and ""clerici"". With the building by Sixtus IV (1471–84) of the church for the celebration of all papal functions since known as the Sistine Chapel, the original ""schola cantorum"" and subsequent ""capella pontificia"" or ""capella papale"" became the ""capella sistina"", or Sistine Choir. Up to this time the number of singers had varied considerably, there being sometimes as few as nine men and six boys. By a Bull dated November, 1483, Sixtus IV fixed the number at twenty-four, six for each