418.3, Location of Floor Drains, is hereby deleted in its entirety and the following provisions shall be substituted therefor:

Floor drains shall be installed in the following areas:

(1) Toilet rooms containing two or more water closets or a combination of one water closet and one urinal, except in a dwelling unit.

(2) Commercial kitchens and in accordance with Section 704.3.

(3) Laundry rooms in commercial buildings and common laundry facilities in multi-family dwelling buildings.

(4) Repair garages and/or gasoline stations where oil or flammable waste may exist. Floor drains shall drain to an approved oil or flammable liquid interceptor installed in accordance with Section 1017.0.