Sec. 1. When used in this Act, unless the context indicates otherwise, the term.
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/il/chapter-820/act-245/1A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Sec. 1. When used in this Act, unless the context indicates otherwise, the term
(a)"Caisson" means a wood, steel, concrete or reenforced concrete air-tight and water-tight chamber in which it is possible for men to work to excavate material.
(b)"Lock" means a chamber designed to facilitate the passage of men and materials from an air pressure greater than normal, as in a compartment, caisson or tunnel, to the ground or water level or normal air pressure.
(c)"Pressure" means gauge air pressure in pounds per square inch.
(d)"Tunnel" means a subterranean passage or chamber.