(a) Separate zones may be used for each deck, and on any particular deck, spaces separated by ``A'' or ``B'' Class bulkheads may be separately zoned.
(b) On any particular deck, large common areas may be zoned in accordance with table 76.23-5(b). All such zones within one common area shall be of approximately the same size. Zones of this type shall overlap in such a manner that the end sprinkler heads of both adjoining zones will cover the identical area.
Table 76.23-5(b)------------------------------------------------------------------------
Square feet of common deck area Maximum-------------------------------------------------------------- number of
Over Not over zones------------------------------------------------------------------------
800 1800............................................... 1,800 21,800............................................. 3,000 33,000............................................. 5,000 45,000............................................. 9,000 59,000............................................. 16,000 616,000............................................ 30,000 730,000............................................ ......... 8------------------------------------------------------------------------