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Chute intakes must comply with Section 14X-5-502.7.4.2.1 or 14X-5-502.7.4.2.2.
Where the intake to chutes is accessed through a chute-intake room, the room must be enclosed with 1-hour fire-resistance-rated construction. Opening protectives for the intake room must be provided in accordance with Section 716 of the Chicago Building Code and have a fire protection rating of not less than 3/4 hour. Opening protectives for the chute enclosure must be in accordance with Section 14X-5-502.7.4.2.1.
Existing flue-fed incinerator rooms and associated flue shafts must be protected with 1-hour fire-resistance-rated construction and must not have other vertical openings connected with the space other than the associated flue. Opening protectives must be provided in accordance with Section 716 of the Chicago Building Code and have a fire protection rating of not less than 1 hour.
(Amend Coun. J. 2-19-20, p. 14473, Art. V, § 21)
In congregate living facilities and residential occupancies with community bathrooms, exit stairways must be enclosed in construction of 1-hour fire-resistance-rated construction and all openings to exit stairway enclosures must be protected with self-closing 90-minute rated opening protectives.
(Amend Coun. J. 2-19-20, p. 14473, Art. V, § 22)
Where openings are required to be protected, opening protectives must be maintained self-closing or automatic- closing by smoke detection. Existing fusible-link-type automatic door-closing devices must be replaced if the fusible link rating exceeds 135ºF (57ºC).
Where fire shields are provided to protect openings of balconies or vestibules in existing smokeproof towers, the fire shields must comply with Sections 14X-5-502.9.1 through 14X-5-502.9.4.
Fire shields must comply with all applicable requirements for opening protectives in Chapter 14B-7.
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