A.
No soil pipe or vent line shall open within eight
feet of any window, door, ventilating shaft or air duct.
B.
In the event that a new building is built higher than
an existing building, the owner of the new building shall not locate
windows within eight feet of an existing vent or stack on the lower
building unless the owner of such new building shall defray the expenses
or shall himself make such alterations to conform with the eight-foot
distance in this article. It shall be the duty of the owner of the
lower or existing building to make such alteration therein, upon receipt
in advance of money or security therefor sufficient for the purpose
from the owner of the new or higher building, or to permit, at the
election of the owner of the new or higher building, the making of
such alterations by the owner of said new or higher building.
C.
All soil and waste pipes must be of cast-iron bell-and-spigot
known in commerce as extra heavy, galvanized wrought-iron pipe, galvanized
steel pipe, cast-iron approved, brass pipe and copper pipe approved.
Waste lines and conductor lines, 2 1/2 inches and larger, of
black wrought iron coated with tar or asphaltum may be used.
D.
All soil and vent pipes shall not extend less than
eight inches and not more than two feet above any roof or building.
In no case shall soil or vent lines pass through a hip or French type
of roof less than 10 feet from lower end of roof.
E.
The minimum diameter of soil pipe permitted is three
inches. A vertical waste pipe into which a line of kitchen sinks,
washstands or drinking fountains are discharged shall be at least
two inches in diameter, with one-and-one-half-inch branches.
A.
All joints in cast-iron bell-and-spigot soil and waste
pipes must be so caulked with oakum and lead, or joints approved by
the Examining Board of Plumbers, as to make them watertight and gastight;
and before they are connected, they must be thoroughly coated inside
and outside with coal-tar pitch applied hot.
B.
All fittings used for soil and waste pipe, except
as hereinafter specified, shall be extra-heavy tar- or asphaltum-coated
fittings, galvanized, recessed and threaded drainage fittings. All
threaded iron pipe shall be reamed before being installed.
C.
All lead pipe used for waste and vent pipe must not
be lighter than medium pipe.
|
Minimum weights
| |
|---|---|
|
Size
(inches)
|
Weight
(pounds per foot)
|
|
1 1/4
|
3.12
|
|
1 1/2
|
5.0
|
|
2
|
6.0
|
|
2 1/2
|
6.8
|
|
3
|
7.0
|
|
4
|
7.8
|
D.
Sheet lead shall weigh not less than four pounds per
square foot.
Every building in which plumbing fixtures are
installed shall have a soil stack or stacks extending through the
roof. Soil and waste stacks shall be as direct as possible and free
from sharp bends and turns.
A.
The size of soil and waste pipes must not be less
than those set forth in the following tables; and not more than one
water closet may be placed on a three-inch horizontal branch, and
not more than two closets may be placed on a three-inch vertical stack
if placed one above the other. If two on one floor, must be four-inch.
|
Soil and Waste Pipes
| ||||
|---|---|---|---|---|
|
Size of pipe
(inches)
|
Branch fixtures
|
Main fixtures
|
Branch water closet
|
Main water closet
|
|
1 1/4
|
1
|
Lavatory
| ||
|
1 1/2
|
1
|
1
| ||
|
2
|
6
|
12
| ||
|
2 1/2
|
12
|
36
| ||
|
3
|
24
|
48
|
1
|
2
|
|
4
|
60
|
180
|
10
|
30
|
|
5
|
120
|
360
|
20
|
60
|
|
6
|
240
|
720
|
40
|
120
|
|
8
|
480
|
1,440
|
80
|
240
|
B.
The term "branch fixture" shall be interpreted to
mean a vertical length of stack, not less than eight feet within which
a branch or branches are connected, and the total fixture units on
all branches connected to a stack within any eight-foot length shall
not exceed the maximum permitted by the table in one branch interval.
C.
Any vertical branch rising more than eight feet, and
any lateral branch running more than 20 feet from the main soil line
shall be continued full size through the roof in the same manner as
required for the stack, or may be returned to main vent line full
size. A cleanout, easily accessible, shall be provided at the base
of all vertical soil and waste stacks, not less than two inches in
diameter up to four inches, and not less than four inches on stacks
larger than four inches. Cleanout shall have iron pipe threads.
No soil or waste stack shall be installed or
permitted outside of a building unless adequate provisions are made
to protect it from frost.
All changes in direction of soil and waste lines
shall be made with T-Y's, half Y's, 1/16, 1/6, or 1/8 bends. In wrought-iron
and cast-iron waste pipe in both horizontal and vertical runs, single
sanitary T-Y's may be used in vertical stacks. T's and cross T's may
be used in vent pipe.
Where acid or water contaminated with acid is
to be wasted, the pipe and fittings in both waste and vent lines,
and connections to sewers must be of material approved by the Examining
Board of Plumbers.
A.
Floor drains in warehouses or similar buildings must
be separately trapped and the waste stack from same must extend through
roof. In no case will dead ends be allowed. Traps for floor drains
need not be back vented. Floor drains in all slaughterhouses must
be discharged into a watertight catch basin or basins of sufficient
size, same to be provided with a leg of cast-iron pipe, not less than
12 inches, to form a seal. The top leg must have a brass cleanout
screw with iron pipe size threads, and the outlet must not be less
than four inches in diameter. In hotels, restaurants and similar buildings
where the greasy waste is discharged into drains or sewers from fixtures,
same must be provided with a grease-trap interceptor of proper size
approved by the Examining Board of Plumbers.
B.
In no case shall a P trap be used for a bathtub or
shower when said fixtures are above the first floor and the traps
are not accessible from the cellar for cleaning and draining. A two-inch
P trap may be used in a stall shower. Where a two-inch P trap is used
in a stall shower, a two-inch waste line must be run.
C.
Waste pipe from bar and soda-fountain fixtures must
be directly connected to the sewer, and the sinks connected with antisyphon
traps. The refrigerators are to drain over open sinks or floor drains.
Slush boxes or bottle racks may be connected to bar waste above trap
or drain, or the same as refrigerators.
All connections of lead waste with iron pipes
must be made with brass or copper ferrules, of the same size as the
lead pipe, put in the hub of the branch of the iron pipe and caulked
in with lead. All connections of lead pipe shall be made with a wiped
joint.
Traps, lead bends, lead waste pipe shall not
be made of a grade less than what is known as medium grade, and the
grade must be stamped thereon. No lead waste under 1 1/4 inches
shall be allowed; minimum copper 1 1/4 inches.
A.
All plumbing fixtures connected to waste must be separately
and effectively trapped.
B.
All traps must be well-supported and set true, with
respect to their water levels, and protected from frost and evaporation.
All floor-drain traps placed in toilet rooms must be provided with
a suitable refill water connection to maintain the water seal in the
trap.
Closet traps must have a heavy brass floor or
wall plate not less than 3/16 inch in thickness, wiped or soldered
to the lead; or, where wrought-iron or brass soil pipe is used, it
shall be screwed to same and bolted to the trap, and the joint be
made gastight and watertight without the use of putty, cement plaster,
lead, rubber or leather washers.
No floor plate, flange or gasket connection
shall be used until it has been presented to and adopted by the Examining
Board of Plumbers.
The use of antisyphon traps for fixtures in
old buildings will be allowed at the discretion of the Plumbing Inspector.
For two dental-chair cuspidors and a washbasin,
the waste pipe shall not be less than 1 1/2 inches and must be
extended full size and then increased one size before passing through
the roof. Branch waste pipes extending to dental chairs may be connected
with antisyphon traps by permission of the Inspectors.
All waste pipes for fixtures installed in the
center of rooms must be extended full size and be increased one size
before passing through the roof, or it may connect to any available
vent pipes, if of proper size. Such fixtures may be equipped with
antisyphon traps.
In a building where dairy products are stored,
the floor or floors must be drained into a sewer and properly trapped.
The drain receiving the discharge of coolers must not be of a size
less than three inches, and properly trapped and vented. Icebox drains
must be trapped and the joint between box and drain must be left open.
A.
In old buildings where an old standard soil stack
is moved to a new location, it may be used, and it must extend through
the roof. No horizontal branch from said stack shall extend over 20
feet.
B.
When replacing an old fixture on old rough work not
disturbed, the new fixture or fixtures need not be ventilated. Should
the old rough work in any manner be altered, it shall be considered
and installed as new work. A plan must be filed and the work inspected.
In all cases where a fixture or fixtures are renewed or replaced,
a specification of the fixture must be filed with the Bureau of Plumbing
and Drainage. Where an old closet is replaced with a new one, a closet
floor flange must be installed and shall be inspected.
Where soil, waste, vent or conductor pipes pass
through the roof, the joints of the roof shall be made watertight
by the use of copper or lead for flashings.
Any other material than that specified in this
code, if approved by the Examining Board of Plumbers, may be permitted.
