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.

 

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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.

Rim Joist: A joist that runs around the perimeter of the floor joists and home.

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

Roof Joist: The rafters of a flat roof. Lumber used to support the roof sheeting and roof loads. Generally, 2 X 10's and 2 X 12's are used.

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

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.

Joist Hanger: A metal 'U' shaped item used to support the end of a floor joist and attached with hardened nails to another bearing joist or beam.

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.

Joist: Wooden 2 X 8's, 10's, or 12's that run parallel to one another and support a floor or ceiling, and supported in turn by larger beams, girders, or bearing walls.

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