A dropped ceiling is often a secondary ceiling, hung below the main (structural) ceiling. It may also be referred to as a drop ceiling, T-bar ceiling, false ceiling, or suspended ceiling, and is a staple of modern construction and architecture. The area above the dropped ceiling is called the plenum space, as it is sometimes used for HVAC air return. The plenum space is also very commonly used to conceal piping, wiring, and/or duct work.
Advantage of ceilings
A ceiling helps cool the room. When the height of the room is too much, providing a ceiling helps to reduce the height. "Reducing the height also helps in reducing the capacity of the air-conditioner ,covering the upper area also has the multiple advantages such concealing the wiring, lighting fixtures, air-conditioning ducts, security cameras, and other fixtures. The ceiling also acts as an attractive base for all kinds of decorative electric lights and fans. These apart, a ceiling helps eliminate echo in the room. In bathroom, ceilings can be provided to hide the pipes or any other fittings above.
