Section 425 ILCS 5/1 - Definitions(a) As used in this Act, "high-rise apartment building" means any multiple unit dwelling with more than 3 levels above street level.(b) As used in this Act, "multiple dwelling" means any building containing 6 or more living units other than a hotel, motel or condominium.(c) As used in this Act, "dwelling unit" means a living unit in a high-rise apartment building or multiple dwelling other than a living unit on the ground floor with a direct exit to the outside.