(1) Except as provided in Sentence (2), the number of water closets and lavatories required for industrial occupancies shall conform to Table 3.7.4.9.
(2) Not more than one water closet to serve both sexes need be provided in a Group F occupancy where,
(a) the occupant load is not more than 10 persons, or
(b) the total area of the occupancy, excluding basements, is not more than 300 m2.