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In every existing high-rise building subject to the requirements of Sections 13-196-204, 13-196-205 or 13-196-206 of this Code, the following materials and installation standards shall apply to newly installed fire protection systems:
(A) An existing water supply that serves an existing fire department wet standpipe system may also serve as the water supply for retrofit sprinkler systems, provided the water supply meets, non-simultaneously, the larger of either the standpipe demand at the time of the original installation, or the new sprinkler system demand including hose stream allowance.
(B) Notwithstanding the requirements of Sections 18-28-602.2.1 and 15-16-370, sprinkler piping and sprinklers shall meet or exceed the requirements of NFPA 13-2002 and their respective product listings issued by an approved independent laboratory or agency.
(C) Automatic sprinkler systems shall meet or exceed the requirements of NFPA 13-2002 except that at least one sprinkler shall be provided within the stairway enclosure at the landing serving the door(s) to each floor.
(D) If repairs or minor modifications are made to existing dry-pipe sprinkler systems, the zoning of the system may remain as originally installed.
(E) Low-voltage electrical wiring risers for fire detection and fire alarm notification systems may be installed in stairways, notwithstanding the requirements of Section 15-8-180, if the wiring is in conduit and does not obstruct the required egress width of a stairwell.
(F) Low-voltage electrical branch wiring in horizontal runs for voice communication systems may be installed without conduit, unless required by other sections of this Code, if the wiring (i) is limited combustible FHC 25/50 CMP; and (ii) has a maximum Class 1 flame spread rating as defined in Section 15-12-040; and (iii) has a smoke developed rating not to exceed 50 when tested in accordance with ASTM-E 84.
(G) Low-voltage electrical wiring for fire detection systems may be run in the same conduit as low-voltage electrical wiring for fire alarm notification systems, as permitted by NFPA 72-2002 and the product listings of the wire and the conduit issued by an approved independent laboratory or agency.
(H) Low-voltage fire detection equipment panels and low-voltage fire alarm notification equipment panels may be installed in the same panel box, as permitted by NFPA 72-2002 and the product's listing issued by an approved independent laboratory or agency.
(I) Central station monitoring of fire alarm systems may use digital alarm communicators with constant supervision, as permitted by NFPA 72-2002.
(Added Coun. J. 12-15-04, p. 39962, § 5)