Section 27-521.10
§ 27-521.10 Applicability. This article shall apply to the
construction, alteration and use of malls.
Section 27-521.11
§ 27-521.11 Classification. A mall shall be classified in occupancy
group C.
Section 27-521.12
§ 27-521.12 Construction; general. (a) A mall may be constructed only
in buildings in noncombustible construction groups 1-A, 1-B and 1-C.
(b) The minimum horizontal clear dimension at any level in a mall
shall be twenty feet.
(c) Where different tenancies have openings to a mall the tenancies
shall be separated in accordance with section 27-341 of article five of
subchapter five of this chapter.
(d) All openings between a mall and other spaces shall be provided
with a noncombustible draft curtain that shall extend downward a minimum
of twenty-four inches below the lowest ceiling adjacent to such draft
curtain or shall meet the requirements of clause three of subparagraph d
of paragraph three of subdivision (h) of section 27-370 of article five
of subchapter six of this chapter relating to show windows.
Section 27-521.13
§ 27-521.13 Fire protection equipment. (a) Smoke detectors. Smoke
detectors meeting the specifications of section 27-981 of article six of
subchapter seventeen shall be located at the ceiling and adjacent to
each return air intake.
(b) Standpipes. At least one standpipe outlet shall be installed in
every mall.
(c) Sprinklers. An automatic wet sprinkler system shall be installed
in every mall.
(1) All spaces with openings between such spaces and a mall shall be
fully sprinklered in accordance with subchapter seventeen of this
chapter and reference standard RS 17-2 regardless of floor area or
occupancy classification.
Section 27-521.14
§ 27-521.14 Egress. The exits for a mall shall be of sufficient
capacity to accommodate the aggregate occupant load of the mall and all
spaces opening onto the mall.
Section 27-521.15
§ 27-521.15 Smoke control. (a) In all malls there shall be provided a
system of mechanical ventilation of sufficient capacity to exhaust at
least six air changes per hour of the combined volumes of the mall and
all spaces with an open connection to the mall, or 1 cfm/sq. ft. from
all such spaces, whichever is greater, using either dedicated fan
equipment or the building ventilation system arranged to shut down
automatically, with manual override capability. Make-up air shall be
supplied at the lowest level of a mall at a rate equal to seventy-five
per cent of exhaust.
(b) All malls shall have a gravity ventilation system equipped with
remote manual controls to remove smoke if the mechanical exhaust system
fails.
(c) A ventilation system serving a mall shall not be interconnected
with any other system serving another space.
(d) Ventilation systems supplying occupied spaces shall not be
interconnected with the general mall supply.
Section 27-521.16
§ 27-521.16 Signs. Malls shall be provided with all signs required by
articles seven and nine of subchapter six of this chapter, regardless of
occupant load of the mall.