Ceiling

**Types of Ceilings:**
– Cathedral ceiling resembles those in a church
– Dropped ceiling has finished surface below the structure above it
– Concave or barrel-shaped ceiling curves upward for visual or acoustical value
– Coffered ceiling is divided into recessed square or octagonal panels
– Cove ceiling uses curved plaster transition between wall and ceiling

**Decorative Elements on Ceilings:**
– Ceilings often decorated with fresco painting, mosaic tiles, and other treatments
– Decorated ceilings are protected from damage by fingers and dust
– Historic buildings often have celebrated ceilings
– The Sistine Chapel ceiling by Michelangelo is famous

**Psychological Impact of Ceiling Height:**
– Ceiling height can have psychological impacts, especially low ceilings

**Fire-Resistance Rated Ceilings:**
– Dropped ceiling is common in contributing to fire-resistance ratings
– Rating achieved by the entire system in a dropped ceiling
– Independent ceilings can have stand-alone fire-resistance ratings
– Systems tested without being suspended from a slab above
– Unrestrained non-loadbearing ceilings undergo fire tests

**Examples of Ceilings in Architecture:**
– Gothic ceiling in the Sainte-Chapelle, Paris, 1243-1248
– Renaissance ceilings in the Louvre Palace, Paris
– Baroque ceiling in the Salle des Saisons in the Louvre Palace
– Neoclassical ceilings in the Louvre Palace
– Moorish Revival ceiling in the Nicolae T. Filitti House, Bucharest, Romania

Ceiling (Wikipedia)

A ceiling /ˈslɪŋ/ is an overhead interior surface that covers the upper limits of a room. It is not generally considered a structural element, but a finished surface concealing the underside of the roof structure or the floor of a story above. Ceilings can be decorated to taste, and there are many examples of frescoes and artwork on ceilings, especially within religious buildings. A ceiling can also be the upper limit of a tunnel.

Various examples of ornate ceilings

The most common type of ceiling is the dropped ceiling,[citation needed] which is suspended from structural elements above. Panels of drywall are fastened either directly to the ceiling joists or to a few layers of moisture-proof plywood which are then attached to the joists. Pipework or ducts can be run in the gap above the ceiling, and insulation and fireproofing material can be placed here. Alternatively, ceilings may be spray painted instead, leaving the pipework and ducts exposed but painted, and using spray foam.

A subset of the dropped ceiling is the suspended ceiling, wherein a network of aluminum struts, as opposed to drywall, are attached to the joists, forming a series of rectangular spaces. Individual pieces of cardboard are then placed inside the bottom of those spaces so that the outer side of the cardboard, interspersed with aluminum rails, is seen as the ceiling from below. This makes it relatively easy to repair the pipes and insulation behind the ceiling, since all that is necessary is to lift off the cardboard, rather than digging through the drywall and then replacing it.

Other types of ceiling include the cathedral ceiling, the concave or barrel-shaped ceiling, the stretched ceiling and the coffered ceiling. Coving often links the ceiling to the surrounding walls. Ceilings can play a part in reducing fire hazard, and a system is available for rating the fire resistance of dropped ceilings.

Definition from ChatGPT:

Ceiling:

In general terms, a ceiling refers to the upper interior surface of a room. It is the overhead structure that covers the top of a room and separates the interior space from the floor above. Ceilings can be made of various materials such as drywall, plaster, wood, or metal, and they can have different designs and finishes to enhance the aesthetics of a space.