No water closet or urinal shall be installed or maintained unless constructed
of vitrified earthenware. All other plumbing fixtures shall be constructed
of glazed porcelain, vitreous china, porcelain-enameled cast iron or other
materials of equal quality; provided, however, that the Plumbing Inspector
may approve of and permit the installation of fixtures that are constructed
of materials other than as above when it is known that the material herein
required would not be practicable due to uses out of the ordinary.
Sinks and special fixtures may be made of soapstone, lead, copper, copper-base
alloy, nickel, nickel-copper alloy, corrosion-resisting steel or other materials
especially suited to the use for which the fixture is intended.
All plumbing fixtures shall be installed in a manner to afford easy
access for cleaning. Where practical, all pipes from fixtures shall be run
to the wall.
The supply lines or fittings for every plumbing fixture shall be so
installed as to provide an air gap as prescribed in the American Standard
for air gaps in plumbing systems.
All fixtures other than water closets and siphon-action wash-down urinals
shall be provided with fixed, strong metallic strainers, with outlet areas
not less than that of the interior of the trap and waste pipe.
All floor-outlet fixtures shall be rigidly secured to the floor by screws
or bolts. Wall-hung fixtures shall be rigidly supported by metal hangers or
bolts.
Used plumbing fixtures may be installed when inspected and found to
meet the requirements of this chapter and to be in satisfactory physical and
sanitary condition.
Water closets shall be siphon-jet, washdown, reverse trap or blowout
type with floor outlet. Water closet bowls shall be made in one piece and
shall be provided with integral flushing rim so constructed as to flush the
entire bowl interior. The form of the bowl shall be such that when filled
to the trap overflow, the quantity of water retained will be sufficient to
prevent the fouling of the surface. Water closets for public use shall be
elongated type with open front seat.
Pan, valve, plunger, offset, washout latrine and other water closets
having invisible seals or an unventilated space, or the walls of which are
not thoroughly washed at each discharge, are prohibited. Any water closet
where the possibility exists of siphoning the contents of the bowl back into
the tank supplying the water for flushing shall be prohibited.
Water closet tanks shall have a flushing capacity to sufficiently and
properly flush the water closet bowl with which it is connected. The flushing
valve seat in close-coupled integral water closet combinations shall be one
inch or more above the rim of the bowl so that the flush valve will close
even if the closet trapway is clogged, or any closets with flush valve seats
below the rim of the bowl shall be so constructed that in case of trap stoppage,
water will not flow continuously over the rim of the bowl.
Float valves for water closet tanks shall automatically close tight
and, in low water closet tanks, shall provide sufficient refill to seal properly
the trap in the bowl.
Flush valves for water closet tanks shall close tight and, in low tanks,
shall have two-inch shanks and shall be provided with overflow except when
tank is provided with integral overflow.
Flush valves in high tanks may be of the gooseneck type and shall have one-and-one-half-inch shank. Overflow on flush valves or when integral with tank shall be in accordance with § 221-121 of this article.
Frostproof closets shall not be permitted. It shall be unlawful to install
a dry closet or a chemical closet in a building.
Direct flush valves shall be installed in a manner to make them readily accessible for repairing. When valve is operated it shall complete its cycle of operation automatically, opening fully and closing positively under the service pressure. At each operation the valve shall deliver water in sufficient volume and at a rate that will thoroughly flush the fixture and refill the fixture trap. Means shall be provided for regulating the flow to flush valves. Valves shall be installed to conform with § 221-156, Article IX, Water Supply and Distribution.
Siphon-jet, blowout and pedestal urinals shall have integral flushing
rims and integral traps, except that washout and stall urinals may have separate
traps.
The use of trough urinals in future installations is prohibited. Urinals
shall be made of glazed vitreous earthenware. Stall urinals shall be set with
rim slightly below floor level and floor shall be graded to urinal.
Urinals may be automatic or provided with chain-pull. Flushing capacity
of tanks shall be adequate for the type of urinal used.
Automatic urinal tanks shall discharge automatically when the water
in the tank reaches a predetermined height. Supply to tanks shall be provided
with means for adjusting the flow so that a discharge at desired intervals
will be obtained.
Urinal tanks with chain-pulls shall be provided with flush valves, operating
levers and chain-pulls. Each urinal tank with a chain-pull shall not be used
for more than one urinal. Flush valves may be of gooseneck siphon type. Float
valves shall automatically close tight.
Direct flush valves or Flushometers shall be as prescribed in § 221-132 of this article, and no flush valve shall be used to flush more than one fixture.
Lavatory waste shall not be less than 1 1/4 inches in diameter
and shall be properly trapped and vented.
Shower receptacles shall be provided with waste outlets not less than
two inches in diameter and shall be properly trapped and vented and provided
with lead pan unless provided with a receptor.
Sinks shall be provided with waste outlets not less than 1 1/2
inches in diameter and of a size not less than that of the traps with which
they are connected.
Each compartment of a laundry tub shall have a waste outlet not less
than 1 1/2 inches and shall be properly trapped and vented.
Bathtubs shall be provided with waste and overflow fittings with not
less than one-and-one-half-inch outlets and shall be properly trapped and
vented.
Drinking fountains shall be provided with not less than one-and-one-fourth-inch
outlets and shall be properly trapped and vented where necessary.
Floor drains shall be installed with a running trap and vented where
necessary. Floor drains shall be considered as a plumbing fixture.
No wooden washtrays or sinks for domestic use shall be installed in
any building designed for human habitation. No sheet-lined wooden bathtub
shall be installed or reconditioned.
Minimum facilities for various types of occupancy or types of buildings
shall be provided in accordance with the following table:
 |
|
Type of Building or Occupancy
|
Water Closets
|
Urinals
|
Sinks
|
Baths or Showers
|
Washbasin
|
Laundry Tubs
|
Drinking Fountains
| |
|---|---|---|---|---|---|---|---|---|
|
Apartment
School:
|
1
|
1
|
1
|
1
|
1
| |||
|
Persons:
| ||||||||
|
1 to 15
|
M,1; F,1
|
1
|
1
|
1 for each 75 persons
| ||||
|
16 to 30
|
M,1; F,2
|
1
|
26--55, 2
| |||||
|
31 to 55
|
M,2; F,3
|
1
|
56--100, 3
| |||||
|
Notes:
Office buildings, manufacturing plants, add one water closet
and one washbasin to every additional 20 people; for other public buildings,
see state requirements.
In the table above, "M" denotes "male" and "F" denotes "female."
|
Every building used for living or sleeping purposes shall be provided
with plumbing fixtures as provided by state or local jurisdiction.
In addition to fixtures listed in § 221-197, Article X, hot water tanks, automatic gas water heaters, tank heaters, hot water supply boilers, water softeners, condensers or any fitting, fixture or device which is supplied with City water, whether or not connected either directly or indirectly to a drain, is a plumbing fixture within the meaning of this chapter.
The Plumbing Board will be the sole judge of what constitutes a plumbing
fixture.
