air shaft


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air shaft

[′er ‚shaft]
(building construction)
An open space surrounded by the walls of a building or buildings to provide ventilation for windows. Also known as air well.
(mining engineering)
A usually vertical earth bore or shaft to supply surface air to an underground facility such as a mine.

air shaft, air well

A ventilating shaft; a roofless enclosed area within a building or between buildings; may have openings such as windows.
References in periodicals archive ?
K = 40 x [10.sup.-10] (for circular, lined air shafts)
You get the full essence of Harlem in an air shaft. You hear fights, you smell dinner, you hear people making love.
Tidland Corporation invented the air shaft in 1948 and has continued to lead the industry ever since.
The machine is available in a coreless version that can start the winding directly on an air shaft. It operates directly in line with a press, allowing single pass non-stop roll label production.
The multiple slit webs are wound on a expanding air shaft with multiple width cores.