A.
Refrigerator waste pipes shall be of galvanized iron
and be not less than 1 1/2 inches in diameter, with branches not less
than 1 1/4 inches with strainers over each inlet. Refrigerator waste
pipes shall not be trapped, but shall discharge over a water-supplied,
properly trapped and vented sink, the top of which sink shall not
be over four feet above the floor.
B.
The indirect waste line, if over 20 feet in length,
shall continue to and through the roof, and in no case shall it be
open within six feet of an open soil or vent pipe. The size of pipe,
where passing through the roof, shall be the size of the waste line
carried through the building.
A.
No plumbing fixtures, except drinking fountains, soda
fountains or bar sinks, shall be installed with an indirect waste
to the plumbing system. The waste of drinking fountains, soda fountains
and bar sinks may be connected directly to the plumbing system when
installed in the same manner as required for other plumbing fixtures,
or they may be installed with an indirect waste with discharge open-end
over a properly water-supplied, trapped and vented sink. In either
case the branch waste to each such fixture shall be at least 1 1/2
inches in diameter with a one-and-one-half-inch trap.
B.
The waste line in either case shall extend through
the roof. Branches on indirect waste lines 15 feet or more in length
shall be continued to the roof.
C.
When one or two such fixtures are discharged into
waste line, said line shall be at least 1 1/2 inches' internal diameter,
and when more than two fountains, such line shall be two inches.
Expansion tank overflow or discharge from vacuum
machines shall be exhausted openly on the roof system.
A gas machine waste may be connected directly
with a drain, soil or waste pipe connecting with the sewer, provided
that the same is properly trapped and vented.
No sediment pipe from house boilers shall be
connected directly into any part of the plumbing drainage system.
No steam exhaust, boiler blowoff or drip pipe
shall be connected with the house drain on the inside of any building.
Such pipes shall first discharge into a proper condensing tank, and
from this a proper outlet to the house sewer outside of the building
shall be provided. In low-pressure steam system, the condensing tank
may be omitted but the waste connection shall be otherwise as above
mentioned.
The waste pipe for dental cuspidors shall be
1 1/2 inches for not more than three connections. When more than three
cuspidors are connected on separate waste line, such line shall be
increased to two inches. Each cuspidor shall be separately trapped
by a trap at least 1 1/2 inches in diameter, properly vented and placed
as close to the fixture as possible. Waste from dental cuspidors may
discharge over sink.
[Amended 8-12-1974 by L.L. No. 7-1974]
A.
A garage or other structure for the housing, sale
or repair of automobiles which is provided with a water supply of
either a temporary or permanent character or in which automobiles
are washed, cleaned or repaired shall be provided with proper means
for draining the floors and repair pits in such manner that no drainage
therefrom shall flow over any street, alley or paved approach. Such
drains shall be so arranged as to intercept all oil, gasoline or other
flammable fluids as well as sand, silt and other solids for the purpose
of excluding same from the sewer system.
B.
They shall be provided with a sealed inlet opening
not less than three inches in diameter and a ventilating pipe of not
less than three inches in diameter and carried up above as the highest
part of the roof and subject to the same conditions as required for
roof outlets of soil or waste pipes.
C.
The material for vent pipe must be the same as required
for house drains when below ground and for soil and waste vents when
above ground.
D.
Such drains shall have the accumulated oils and other
flammable fluids pumped or otherwise removed therefrom at regular
intervals and shall be so maintained as to ensure the exclusion of
the same from the sewer system.
E.
They shall also be kept free of sand, silt and other
solids and shall be subject to a periodical inspection.
F.
Every building hereafter constructed or converted
into a place of business where gasoline, benzine, naphtha or other
flammable oils or compounds are used and existing buildings where
such business is carried on shall be provided with a special drain
the same as that required above for garages. A washbasin in a garage
may discharge into the catch basin vent pipe. Such catch basins shall
be substantially constructed as tight cesspools and may be of cast
iron, concrete, concrete block or brick or steel-tank type.
G.
Definition. "Tight cesspools" are defined as a closed
block catch basin which is constructed to be nonporous.
All air conditioner condensate water shall not
be directly discharged into the sanitary sewer system unless approved
by county authorities.
