If fire shields in smokeproof towers are provided to protect openings of balconies or vestibules in existing buildings exceeding 80 feet in height above grade, such fire shields shall comply with the requirements of this section.
Fire shields shall comply with all applicable requirements for fire windows as provided in Section 15-12-160.
Fire shields shall have an opening sash having a clear area not less than as required in Section 13-160-380(c), arranged to open automatically in case of fire to the full limit and to be held securely in such open position. Provision shall be made for the manual opening or closing of the sash.
The automatic opening of the sash shall be actuated by approved devices located inside the building within five feet of the door from the building to the vestibule or balcony and located also on the ceiling of the vestibule or balcony. Such devices shall be designed to operate as a result of rate of temperature rise or when the surrounding air reaches a temperature of 120 degrees Fahrenheit.
Each fire shield sash shall be tested annually to verify automatic operation as required in subsection (c) of this section. Testing shall be performed by an individual or organization approved by the deputy commissioner in charge of the bureau of fire prevention. Reports of the testing shall be filed with the bureau by June 30 of each year.
(Added Coun. J. 12-15-04, p. 39962, § 6)