Drainage piping shall be provided
with approved inlet fittings for fixture connections, correctly located according to the size and type of fixture
proposed to be connected.
Two fixtures set
back-to-back, or side-by-side, within the distance allowed
between a trap and its vent shall be permitted to be served
by a single vertical drainage pipe provided that each fixture
wastes separately into an approved double-fixture fitting
having inlet openings at the same level.
Pot sinks, scullery sinks, dishwashing
sinks, silverware sinks, and other similar fixtures shall be connected directly to the drainage system. A floor
drain shall be provided adjacent to the fixture, and the
fixture shall be connected on the sewer side of the floor
drain trap, provided that no other drainage line is connected
between the floor drain waste connection and the fixture
drain. The fixture and floor drain shall be trapped and
vented in accordance with this code.