A ceiling in which the furring units are attached directly to the structural units of the building.


Related Terms

LOUVER

1. An opening in a wall or ceiling with slanted or sloping slats to allow sunlight and ventilation and exclude rain; may be fixed or adjustable, and may be at the opening of a ventilating duct. Also known as outlet ventilator. 2. Any arrangement of fixed or adjustable slatlike openings to provide ventilation.

LASER CEILOMETER

A ceilometer in which the time taken by a light pulse from a ground laser to travel straight up to a cloud ceiling and be reflected to a receiving photomultiplier is measured and converted into a cathode-ray display that indicates cloud-base height.

SEALING

The caulked floor of the hold. (ceiling).

CEILING, JOINER WORK

The overhead finished surface in quarters, etc.

ELECTRIC INFRARED HEATER

Electric heaters consisting of long, slender tubes, similar in appearance to fluorescent lamp fixtures. The tubes fit into fixtures, which can be hung from the ceiling or wall, or mounted flush with the ceiling. A reflector is mounted behind each tube directs the radiant heat into the space to be heated.

IMC

Instrument meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling less than the minima specified for visual meteorological conditions.

I.M.C.

Instrument meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling less than the minima specified for visual meteorological conditions.

VMC

Visual meteorological conditions. Meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling equal to or better than specified minima.

V.M.C.

Visual meteorological conditions. Meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling equal to or better than specified minima.

ACOUSTICAL CEILING

A ceiling covered with or built of material with special acoustical properties.

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