Ceiling: The lowest cloud layer that is reported as broken or overcast. If the sky is totally obscured, then it is the height of the vertical visibility.

 

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Ceiling: The lowest cloud layer that is reported as broken or overcast. If the sky is totally obscured, then it is the height of the vertical visibility.

Variable Ceiling: Occurs when the height of a ceiling layer increases and decreases rapidly, The ascribed height is the average of all the varying values.

Ceiling Joist: One of a series of parallel framing members used to support ceiling loads and supported in turn by larger beams, girders or bearing walls. Also called roof joists.

Measured Ceiling: A ceiling classification applied when the ceiling value has been determined by an instrument, such as a ceilometer or ceiling light, or by the known heights of unobscured portions of objects . . . View Full Definition

Suspended Ceiling: A ceiling system supported by hanging it from the overhead structural framing.

Glass Ceiling: Used to describe the invisible barrier keeping women from advancing into executive-level positions.

Ceiling Light: An instrument consisting of a drum and an optical system that projects a narrow vertical beam of light onto a cloud base.

Absolute Ceiling: The maximum altitude above sea level at which an aircraft can maintain level flight under Standard Air conditions.

Glass Ceiling Act Of 1991: An act meant to raise public awareness regarding the underutilization of females and minorities in certain positions within the U.S. workforce and eliminate barriers preventing advancement.

Service Ceiling: The height above sea level at which an aircraft with normal rated load is unable to climb faster than 100' per minute under Standard Air conditions.