Garages shall conform to all other applicable
requirements of this Part 1 as well as the following provisions.
No person shall use any building, shed or enclosure
as a place of business for the purpose of servicing or repairing any
motor vehicle therein without a permit.
Welding and cutting and other processes involving
direct application of flame shall not be carried on in any garage
housing more than 20 automobiles on any floor unless the garage is
equipped with an approved automatic sprinkler system or such processes
are carried on in a room enclosed by walls and ceiling of construction
having a fire-resistance rating of not less than one hour, with openings
therein protected by approved fire doors or fire windows and with
no opening from such room to any upper story. No repairs of any kind
shall be made in any garage the floor of which is below entrance level.
No flammable liquid with a flash point below
100° F. shall be used in any garage for washing parts or removing
grease or dirt, unless in a special closed machine approved for the
purpose or in a separate, well-ventilated room enclosed by walls having
a fire-resistance rating of not less than two hours, with openings
therein protected by approved fire doors or fire windows and with
no opening from such room to any upper or lower story.