"Rooming unit" means a unit of dwelling space located within a multiple dwelling or a hotel, forming a
single habitable unit used or intended to be used for living and sleeping, but not for cooking or eating
purposes.
"Rubbish" means nonputrescible solid waste consisting of both combustible and noncombustible
waste, such as paper, wrappings, cigarettes, tin cans, yard clippings, leaves, wood, glass, bedding,
crockery and similar materials.
"Sanitary system" means either the public system for disposal of sewage from the premises or, in the
absence of such system, any private system available to the premises for the disposal of sewage.
"Self-closing", as applied to an opening protective, means a door, window, damper, or other device
and its assembly that is normally kept in a closed position and that is equipped with an approved device
to insure immediate closing after having been opened for use.
"Sewage" means any liquid waste containing animal or vegetable matter in suspension or solution,
and may include liquids containing chemicals in solution.
"Shaft" means a vertical, inclined or offset passage, duct or hoistway, penetrating through two or more
floors of a building or through a floor and roof, for the transmission of light, air, materials or persons, or
the passage of pipes or other mechanical facilities.
"Shall", as used in this chapter, is always to be construed as mandatory.
"Sink" means a plumbing fixture located in a kitchen area +and used exclusively for food preparation
operations.
"Story" means that portion of a building that is between a floor level and the next higher level or roof
above.
"Street" means a thoroughfare dedicated or devoted to public use by legal mapping or other lawful
means.
"Structure" means an assembly of materials forming a