Where there is no sewer in the street or avenue and it is possible to construct a private sewer to connect in an adjacent street or avenue, a private sewer may be constructed to be used in common for one or more buildings. It must be laid outside the curb under the roadway.
All pipes, issuing from extensions or elsewhere, which would otherwise open within 10 feet of the window of any building must be extended above the top of any window located within such distance. When a building exceeds in height that of an adjoining building and windows or openings are cut in the wall on the lot line within 20 feet of the roof terminal of any soil, waste or vent line now in place or subsequently installed in the lower building, the owner of the higher building shall defray the expense of extending said soil, waste or vent lines above the roof of the higher building or shall himself make such alteration.
The arrangement of all pipes must be as straight and direct as possible. Offsets will be permitted only when unavoidable.
A.
All pipes and traps should, where possible, be exposed to view. They should always be readily accessible for inspection and repairing.
B.
Where sewer connections are being made to an existing building with unvented fixtures, nonsyphoning traps may be installed on existing fixtures by special permission of the Plumbing Inspector.
C.
No double hub or double T's shall be used on soil or waste lines. Drilling or tapping of house drain, soil or waste or vent lines or the use of saddle hubs of straps is prohibited.
D.
The Plumbing Inspector may, with the approval of the Board of Trustees, permit the use of materials other than those specified in this code. Only new materials may be used in new or altered buildings unless specific permission is granted otherwise by the Plumbing Inspector in accordance with this Article.
E.
The storage tanks and boilers used for hot-water purposes shall be of the weight known as "heavy, extra-heavy or heavier."
A.
Inside leaders must be made of cast iron, wrought iron or steel, with roof connections made watertight by means of a heavy lead or copperdrawn tubing wiped to a brass ferrule or nipple caulked or screwed into the pipe.
B.
Leaders shall run to cesspools and in no case shall be connected to the house sewer.
C.
All yard, area, court, floor, cellar and subsoil drains and leaders must be connected to a cistern or cesspool or as otherwise especially approved by the Inspector.
D.
Outside leaders must be made of sheet metal and must be connected as above.
A.
All garage floor drains shall discharge into dry wells and shall not be connected so as to eventually empty into the sewer.
B.
An application may be made to the Board of Trustees for permission to install oil separators in a building where volatile fluids are used. Oil separators installed on permit must be readily accessible. They must not receive the discharge of any watercloset, rain leader, yard, court or area drain.
C.
They must, if discharged by gravity, be connected by a Y-branch fitting to the house drain behind the house trap in such a manner that they will not interfere with the house drain and the rest of the plumbing and drainage system. When mechanical force is used to discharge the contents, the connection must be made by a Y-branch fitting on the sewer side of the house trap.
D.
No separate running trap need be provided on the drain entering oil separators, but a separate fresh air inlet and vent line must be provided to keep the system of drainage controlled by the oil separator entirely separate from the rest of the plumbing and drainage system.
E.
The size of the fresh-air inlet shall be determined by the size of the inlet connection to the oil separator, which shall be considered the same as the term "house drain" for determinating the size of all fresh-air inlets, which shall conform to the same requirements as regards size and arrangement of terminals for fresh-air inlets as called for in regulations.
F.
Vent lines shall conform in all respects to vent lines for plumbing fixtures as regards size and arrangement.
G.
Relief pipes must be provided at least 1 1/2 inches in diameter. They may be connected to a vent line when installed as a separate system or must be carried independently above the roof.
A.
All sewer connections from buildings or structures to public or private sewers, septic tanks or cesspools shall be four-inch-cast-iron pipe, extra heavy (joints to be caulked with lead), or heavy vitrified-clay sewer pipe caulked with oakum and at least one inch of approved caulking compound or four-inch asbestos cement pipe. Pipe fittings and couplings shall be in accordance with the Standard Specifications for Asbestos-Cement House Connection Pipe, on file with the Examining Board of Plumbers.
B.
The house drain, if above the cellar floor, must be supported at intervals of 10 feet by eight-inch brick piers or suspended from the floor beams or be otherwise properly supported by proper hangers placed not more than 10 feet apart.
C.
No steam-exhaust, boiler blowoff or drip pipe shall be connected with the house drain. Such pipes must first discharge into a proper condensing tank, and from this a proper outlet to the house sewer outside of the building must be provided. In a low-pressure steam system, the condensing tank may be omitted, but the waste connections must be otherwise as above required, only after first receiving permission from the Board of Trustees or such agent as it may appoint for that purpose.
D.
Such tanks shall be tested to an excess of 100 pounds' working pressure above that carried in the equipment so connected. Such tanks shall be provided with a steam inlet, drain, overflow and a separate vent through the roof. A working drawing of each such installation shall be submitted to the Plumbing Inspector for his approval before any part thereof is installed.
E.
The house sewer and house drain must be at least four inches in diameter when receiving the discharge of a water closet.
F.
When the plumbing system of any building is altered by the addition of a new soil, waste, vent or sewer line and no house trap and fresh-air inlet exists on the house drain, the same shall be provided.
G.
The house trap must have two cleanouts, with brass screwcap ferrules caulked in or an improved house trap.
H.
A fresh-air inlet pipe must be connected with the house drain just inside of the house trap and extended to the outer air, terminating with the open end at least one foot above the grade, and shall be fitted with perforated grating or a cast-iron cowl approved vent cap at the most available point to be approved by the Board of Trustees or such agent as it may appoint for that purpose and shown on plans. The fresh-air inlet pipe shall be 1/2 the diameter of the house drain but not less than four inches in diameter.
I.
No curb box or similar device with grating placed in the sidewalk will be permitted for fresh-air inlets.
J.
Where plumbing fixtures exist at a low level and cannot be drained into the sewer by means of gravity, a separate house drain shall be installed and discharged into an airtight sump or receiving tank, and the sewage shall be lifted by pumps, pneumatic ejectors or equivalent automatically operated methods and shall connect with the house sewer on the street side of the house trap, and the same shall be provided with a house trap and fresh air. The fixtures are to be trapped and vented.
K.
Receiving tanks, other than pneumatic, shall be provided with vents at least two inches in diameter which can be connected to the gravity venting system.
L.
Pneumatic receiving tanks shall be provided with a vent pipe at least three inches in diameter, extended independently through the roof.
M.
A working drawing shall be submitted to the Plumbing Inspector for his approval before any installation thereunder shall be commenced.
A.
All main, soil, waste or vent pipes must be of iron, steel or brass. Acid wastes must be B lead pipe, and lead pipe must be at least two inches in diameter. They must be extended through the roof for ventilation and continue down to the lower story of the building and be so arranged as to discharge into a lime box and diluting sink properly trapped and vented. No acid wastes shall be connected to the public sewer without special permission from the Board of Trustees and the Board of Health. All acid wastes, if permission is not granted by the Village, shall be separately and independently connected to a private sewer and provided with an accessible running trap located just inside the wall of the building. All branches and joints for lead acid wastes must be made by means of burnt lead joints. Each length of pipe on vertical runs and on horizontal runs, when above the cellar floor, must be supported at each five feet by proper supports.
B.
When they receive the discharge of fixtures on any floor above the first, they must be extended in full caliber at least one foot above the roof coping and well away from all shafts, windows, chimneys or other ventilating openings. When less than four inches in diameter, they must be enlarged to four inches at a point not less than one foot below the roof surface by an increaser not less than nine inches long.
C.
No caps, cowls or bends shall be affixed to the top of such stack.
D.
In all buildings, wire baskets must be securely fastened into the opening of each pipe in accessible position. When roofs are used for drying purposes or roof gardens, all pipes shall be extended to a height of seven feet.
E.
Necessary offsets above the highest fixture branch must not be made at an angle of less than 45° to the horizontal.
F.
Soil and waste pipes must have proper Y- or TY-branches for all fixture connections.
G.
No connection to lead branches for water closets or slop sinks will be permitted, except the required branch vent.
H.
Branch soil and waste pipe must have a fall of at least 1/4 inch per foot.
I.
Short TY-branches will be permitted on vertical lines only. Long one-quarter bends and long TY's are permitted. Short one-quarter bends and double hubs, short roof increasers and common offsets and bends and saddles are prohibited.
J.
Pipe diameter.
(1)
The diameters of soil and waste pipes must not be less than those given in the following table:
(a)
Main soil stacks in buildings serving not more than two sets of fixtures in four or fewer stories: four inches.
(b)
Main soil stacks in all other cases: five inches.
(c)
Main soil stack for one toilet: three inches.
(d)
Branch soil pipe for not more than one closet: three inches.
(e)
Branch soil pipe for two and not more than 10 water closets: four inches.
(f)
Main waste stacks: two inches.
(g)
Main waste stacks for kitchen sinks on six or more floors: three inches.
(h)
Branch waste for slop sinks: three inches.
(i)
Branch waste pipes for laundry tubs: 1 1/2 inches.
(j)
When set in ranges of three: two inches.
(k)
Branch waste for kitchen sinks: two inches.
(l)
Branch waste for urinals: two inches.
(m)
Branch waste for other fixtures: 1 1/2 inches.
(2)
A set of fixtures as used in this rule shall include not more than one water closet, one bathtub, one washbasin, one sink and two laundry trays.
(3)
No other fixture waste except a laundry tray shall be connected to a kitchen sink waste.
A.
All vent pipe lines and main branches must be of cast or wrought iron, galvanized steel, copper or brass. They must be increased in diameter and extend above the roof as required for waste pipes. They must be connected with the adjoining soil and waste line well above the highest fixtures. Branch vent lines shall be graded slightly so that no water may accumulate in them.
B.
All offsets must be made at an angle of not less than 45° to the horizontal, and all lines must be connected at the bottom with a soil or waste pipe or the drain in such a manner as to prevent the accumulation of rust scale.
C.
Branch vent pipes shall be kept above the top of all connecting fixtures so as to prevent the use of vent pipes as soil pipes or waste pipes. Branch vent pipes should be connected not less than six inches nor more than two feet from the crown of the traps or the side of the lead bend.
(1)
Branch and individual vents. No vents shall be less than 1 1/2 inches in diameter.
(2)
For one-and-one-half-inch waste, the vents shall be of the same diameter as the waste pipe. In no case shall a branch or main vent have a diameter less than 1/2 that of the soil or waste pipe served. In no case shall the length of a branch vent of given diameter exceed the maximum length permitted for the main vent serving the same size soil or vent stack.
D.
Except where yoke-type ventilation is installed, vent connection for water closets and slop sinks must be made from the branch soil or waste pipe just below the trap of the fixture, and the branch vent pipe must be so connected as to prevent obstruction, and no waste pipe shall be connected between it and the fixture. Earthenware traps must have no vent horns. "Yoke-type ventilation" shall be taken to mean a cross connection, by means of a horizontal branch soil or waste pipe between the main soil or waste line and the vent line, in which the connection between the branch pipe and the vent line is made at least six inches above the line of fixture discharging into such a branch pipe.
E.
No sheet metal, brick or other flue shall be used as a vent pipe.
F.
The sizes of vent pipes throughout must not be less than the following:
(1)
For main vents, two inches in diameter; for water-closets on three or more floors, three inches in diameter; and for other fixtures on fewer than seven floors, two inches in diameter.
(2)
For long branch vent pipes over 10 feet in length, but not exceeding 25 feet, two inches in diameter and, when over 25 feet in length, but not exceeding 50 feet, three inches in diameter. No branch vent pipe can exceed 50 feet in length, nor can any vent be of less diameter than the largest branch vent connecting to the same.
G.
When the plumbing fixtures installed in any building are arranged in groups or batteries, yoke-type ventilation may be installed, provided that, for batteries of water closets, each fixture shall be set no more than two feet distant from the horizontal branch soil pipe into which it discharges, and for batteries of fixtures other than water closets, each fixture shall be so located that its trap will not be more than two feet distant from the horizontal branch waste line into which it discharges. When the ordinary type of venting is installed and the number of branch or back vents from the traps of fixtures connecting to any main branch vent exceeds the number and size given in the following table, a three-inch main branch vent must be provided for the additional vent connections:
(1)
Two one-and-one-half-inch branches on a one-and-one-half inch main branch.
(2)
Four two-inch branches on a two-inch main branch.
(3)
Seven one-and-one-half-inch branches on a two-inch main branch.
(4)
Four one-and-one-half-inch branches on a two-inch main branch.
(5)
Five one-and-one-half-inch branches on a two-inch main branch.
(6)
The main vent stack for not more than one fixture can be 1 1/2 inches.
A.
Every fixture must be separately trapped by a water-sealing trap placed as close to the fixture outlet as possible, and no trap shall be placed more than two feet zero inches from any fixture.
B.
Venting traps. Every fixture trap shall be protected against siphonage and back pressure, and air circulation shall be assured by means of a soil or waste stack vent, a continuous waste or soil vent or a loop or circuit vent. No crown vent shall be installed.
C.
A set of not more than two wash trays may connect with a single trap or into the trap of an adjoining sink, provided that both sink and tub waste outlets are on the same side of the waste line and the sink is nearest the line.
D.
The discharge from any fixture must not pass through more than one trap before reaching the house drain.
E.
All traps must be well supported and set true with respect to their water levels.
F.
All fixtures, other than water closets and urinals, must have stong metallic strainers or bars over the outlets to prevent obstruction of the waste pipe.
G.
Shower safes and traps. Where shower stalls are installed with tile or cement or composition floors constructed on the premises, a sheet lead safe shall be installed under tile or cement of not less than four pounds of sheet lead, painted on both sides with asphalt paint, and shall be made watertight to an approved combination drain and trap. The strainer shall be not less than four inches, and the outlet of trap shall be not less than two inches.
H.
The lead pan shall be formed in one piece and turned up on the sides at least eight inches and counterflashed at the curb, which shall be at least six inches.
I.
All exposed or accessible traps, except water closet traps, must have brass tap screws for cleaning the trap placed on the inlet side or below the water level.
J.
Overflow pipes from fixtures must, in all cases, be connected on the inlet side of traps.
K.
Every water closet shall have a brass floor flange soldered to the lead band and bolted with brass bolts to the closet. All floor flanges must be set in place and inspected by the Plumbing Inspector before any water closet is set thereon.
L.
No trap shall be placed at the foot of main soil and waste pipe lines.
M.
Every plunge bath shall be provided with a trap at least four inches in diameter. The waste from the trap to the bath shall be reduced to two inches in diameter, and this waste shall be controlled by a gate valve. Overflow pipes, if provided, must be connected on the inlet side of the trap. Such trap must be ventilated by a separate vent line extending above the roof, of the same size as the trap and water connection.
N.
The size of traps must not be less than those given in the following tables:
(1)
Traps for water closets: four inches in diameter.
(2)
Traps for slop sinks: three inches in diameter.
(3)
Traps for kitchen sinks: two inches in diameter.
(4)
Traps for wash trays: 1 1/2 inches in diameter.
(5)
Traps for urinals: two inches in diameter.
(6)
Traps for showerbaths: two inches in diameter.
(7)
Traps for other fixtures: 1 1/2 inches in diameter.
O.
Every dental cuspidor must be separately trapped by a trap of at least 1/2 inches in diameter, which shall be vented and placed as close to the fixture as possible. The connection between trap and cuspidor may be 3/4 of an inch in diameter.
P.
No plumbing fixtures, except bar sinks, soda fountains or drinking fountains, shall be installed with an indirect waste connection to the plumbing and drainage system. The waste of every bar sink, soda fountain and drinking fountain must discharge over a properly water-supplied trapped sink with the trap vented. The main waste line shall be two inches in diameter and the branches to fixtures at least 1 1/2 inches in diameter. Drinking fountains must be trapped and have the waste line extended through the roof. No vent connections need be provided.
(1)
Washing machine waste. Washing machines shall discharge over a trapped sink with the trap vented, over which shall be provided a faucet for flushing.
(2)
Fountains. Sinks to receive discharge of soda fountains and bars shall be at least eight inches deep and provided with hot-water faucets. Where it is impractical to use a sink, such fountains and bars may be drained to a separate dry well installed as approved by the Plumbing Inspector (drain for air condition).
(3)
Gravity-type overflow or waste of humidifiers shall be connected to dry wells.
(4)
Spray-type humidifiers shall discharge over a sink which shall have a two-inch trap properly vented, and the sink shall be supplied with a cold-water faucet.
(5)
Where sewer connections are being made to an existing building with unvented fixtures, nonsyphoning traps may be installed on existing fixtures by special permission of the Plumbing Inspector.
(6)
No double hub or double T's shall be used on soil or waste lines. Drilling or tapping of house drain, soil or waste or vent lines or the use of saddle hubs is prohibited.
A.
Safe and refrigerator waste pipes must be of galvanized iron and be not less than 1 1/4 inches in diameter nor larger than 1 1/2 inches in diameter, with pipe branches at least one inch in diameter with strainers over each inlet.
B.
Safe and refrigerator waste pipes shall not be trapped. They must discharge over a properly water-supplied, trapped sink, with the trap vented. Such sink shall be publicly placed, and not more than four feet above the floor. In no case shall any refrigerator or safe waste pipe discharge over a sink located in a room used for living purposes.
C.
The branches on vertical lines must be made by Y- or TY-fittings and carried up to the safe with as much pitch as possible.
D.
Lead safes must be graded and neatly turned over bevel strips at their edges.
E.
Where there is an offset on a refrigerator waste pipe in the cellar, there must be cleanouts to control the horizontal part of the pipe.
F.
In all lodgings and tenement houses, the safe and refrigerator waste pipes must extend above the roof. No refrigerator waste can be connected to the public sewer without first securing permission from the Board of Trustees or such agent as it may appoint for that purpose.
A.
In all buildings occupied as stores, dwellings, lodgings or boardinghouses, hotels, offices, lofts, workshops, factories or storage houses, there must be at least one water closet in each building. There must be sufficient waterclosets so that there will never be more than 15 persons to each water closet. In places of public assembly, the number of toilets and the most available location are to be determined by the Board of Trustees or such agent as it may appoint for that purpose.
(1)
Separate water closets and toilet rooms must be provided for each sex in buildings used as workshops, lofts, office buildings, factories, hotels and all places of public assembly.
(2)
In lodging houses, there must be one water closet on each floor, and, where there are more than 15 persons on any floor, there must be an additional water closet on that floor for every 15 additional persons or fraction thereof.
(3)
In tenement houses, lodging houses, factories, workshops and all public buildings, the entire water closet apartment and side walls, to a height of six inches from the floor except at the door, must be made waterproof with asphalt, cement, tile, metal or other waterproof material as approved by the Board of Trustees or such agent as it may appoint for that purpose.
B.
In all buildings, the outside partition of any water closet or urinal apartment must be airtight and extend to the ceiling or be independently ceiled over. When necessary to properly light such apartment, the upper part of the partitions must be provided with translucent glass. The interior partitions of such apartments must be dwarf partitions.
C.
The general water closet accommodation of any dwelling cannot be placed in the cellar, nor can any water closet be placed outside of a building except to replace an existing water closet.
D.
In alteration work where it is not practical to ventilate a water closet or urinal apartment by windows or a skylight directly to the outer air, there may be provided a galvanized iron vent duct extending to the outer air which must be equal in area to at least 144 inches for one water closet or urinal and an additional 72 square inches for each water closet added therein.
(1)
The above galvanized vent may be installed in a new building upon expressed approval of the Plumbing Inspector. Where it is not practical to install gravity venting as above, mechanical exhaust fans with ducts may be installed. In either case, a blueprint layout must be submitted before the permit is issued.
(2)
Ventilation either by window or duct opening shall in all cases be on the same lot.
E.
All water closets shall be provided with rim seats attached to the bowl.
F.
Every earthenware water closet with connection through the floor, in all new work and in all alterations, must be set on an approved floor slab of porcelain, marble or other material impervious to moisture, the same to be not less in size than the base of the water closet set thereon.
G.
All water closets must have earthenware flushing rim bowls. They must be set entirely free and open from all enclosing woodwork.
H.
Pan, plunger, offset-washout and washout or other water closets having unventilated space or the walls of which are not thoroughly washed out at each discharge will not be permitted.
I.
Long hopper water closets will not be permitted, except earthenware hoppers, where there is an exposure to frost. Drip trays on water closets will not be permitted.
J.
Water closets and urinals must never be connected directly with or flushed from the water supply pipes, except when flushometer valves are used.
K.
Each water closet and urinal must be flushed from a separate cistern, the water from which is used for no other purpose, or may be flushed through flushometer valves. Where flushometers are used, they must be supplied with a separate riser with a separate valve and drain at the foot of the riser, and not branch other than the toilet shall be taken off this riser. The rising lines shall be at least 1 1/4 inches in diameter, and the main branches shall be at least one inch in diameter for water closets and not less than 1/2 inch in diameter for urinals. Individual branches shall not exceed 12 inches in length. Each flushometer shall have 1 1/4 inches of air chamber at least 24 inches high and shall also be provided with an approved syphon-breaking device.
L.
The overflow of cisterns may discharge into the bowl of the closet but in no case connect with any part of the drainage system.
M.
Iron water closet and urinal cisterns and automatic water closet and urinal cisterns are prohibited. The copper lining of water closet and urinal cisterns must not be lighter than ten-ounce copper.
N.
Water closet flush pipes must not be less than 1 1/4 inches and urinal flush pipes one inch in diameter and, if of lead, must not weigh less than 2 1/2 pounds. Flush couplings must be of the full size of the pipe. Rubber connections and elbows are not permitted on flush pipes.
O.
Latrines, trough water closets and similar appliances may be used only on written permit from the Board of Trustees or such agent as it may appoint for that purpose and must be set and arranged as may be required by the terms of the permit.
P.
All urinals must be constructed of materials impervious to moisture that will not corrode under the action of urine. The floors and walls of the urinal apartments must be lined with similar nonabsorbent and noncorrosive material. The platforms or treads of urinal stalls must never be connected independently to the plumbing system, nor can they be connected to any safe waste pipe. Iron trough water closets and through urinals must be enameled or galvanized.
Q.
Wooden washtubs are prohibited, except when used in hotels, restaurants or bottling establishments for washing dishes or bottles. Cement or artificial stone tubs will not be permitted unless approved by the Board of Trustees or such agent as it may appoint for that purpose.
The entire plumbing water supply and drainage systems within buildings must be tested by the plumber in the presence of the Plumbing Inspector or such other agent as may be appointed by the Board of Trustees for that purpose. All pipes must remain uncovered in every part until such time as they have successfully passed the test. The plumber must securely close all openings as directed by the Plumbing Inspector. The use of wooden plugs for this purpose is prohibited.
A.
The water test for drainage systems shall be applied by closing the lower end of the main house drain and filling the pipes to the highest opening above the roof with water. The water test shall include, at one time, the house drain and branches, all vertical and horizontal soil, waste and vent lines and all branches therefrom to a point above the surface of the finished floor and beyond the finished face of walls and partitions. If the drain or any part of the system is to be tested separately, there must be a head of water at least six feet above all parts of the work so tested, and special provision must be made for including all joints and connections in at least one test. Inside leaders shall have a separate test.
B.
The water test for the entire water supply system must be made in the presence of the Plumbing Inspector or such agent as may be appointed by the Board of Trustees for that purpose. During such test, a pressure of 125 pounds per square inch shall be applied continuously for a period of not less than 30 minutes. All pipes and fittings must remain uncovered until they have successfully passed the test.
C.
After the completion of the plumbing work in any new or altered building and before the building is occupied, a final smoke or peppermint test must be applied if required by the Board of Trustees or such agent as it may appoint for that purpose.
D.
The materials and labor for the test must be furnished by the plumber. When the peppermint test is used, two ounces of oil of peppermint must be provided for each line.
E.
Roof flashings shall be tested to the satisfaction of the Plumbing Inspector.
All sections or parts of sections of the law relating to plumbing and drainage of labor factories are to be observed and are hereby made a part of these rules and regulations.
A.
Standpipe lines.
(1)
Equipment shall consist of a system of piping connected with one or more approved sources of water supply and provided with a sufficient number of hose outlets and hose to make possible the covering of every portion of each floor area with a standpipe hose stream, except that, where the first story or basement, or both, are occupied as stores without connecting with the entrance hall or stair enclosure to upper stories, the Board of Trustees may permit the omission of standpipe protection in such stores and, if so omitted, prescribe such portable protection as it may deem necessary.
(2)
The Board of Trustees may require the installation of an approved system of standpipe in any place of public assemblage, hotel, school, apartment house, office building or factory.
B.
Approval:
(1)
Before any required standpipe system is installed, plans, in duplicate, shall be filed at the Village Office, showing the location and size of service mains, headers, standpipe hose reels, slameses, check valves and gate valves.
(2)
Upon approval of plans but before acceptance of any standpipe system, it shall be tested for at least 1/2 hour, in the presence of the Board of Trustees or such agent as it may appoint for that purpose, to a pressure of 300 pounds per square inch.
C.
Monthly inspection. All valves, hose, tools and other auxiliary fire appliances shall be kept in perfect working order, and, at least once a month, the person in charge of the building shall make a thorough inspection of the same to see that all appliances are in perfect working order and ready for use by the Fire Department. He shall instruct all employees under his charge in the use and practice of standpipes and auxiliary fire appliances. A detailed record of each inspection shall be kept on a form furnished by the Fire Department.
D.
Valves. All valves controlling standpipe water supply, except the valves in hose outlets, shall be iron body, brass mounted, O S and Y type. All new piping for standpipe fire lines shall be full-weight wrought iron or steel lapwelded and tested by the manufacturer to 500 pounds per square inch. For hydrostatic pressure, standard weight fittings and valves may be used. Fittings and horizontal runs shall have long turns and shall have a radius not less than five times the diameter of the pipe.
E.
Construction. Each standpipe fire line riser shall be supported at the bottom and at each alternate floor. Hanging lines shall be supported by heavy steel hangers at intervals of not more than 10 feet. The arrangement of lines must be straight and as direct as practicable. As far as practicable, joints shall be screwed joints made watertight with an approved joint compound.
F.
Number of risers. Where standpipe equipment is required, there shall be at least one riser for each 10,000 square feet of floor area. In all cases regardless of area or location, there shall be a sufficient number of lines so that every portion of each floor area may be covered by the stream from a standpipe hose not exceeding 100 feet in length, except that, in cases of hotels, portions of the floor area which are most remote from the standpipe may be protected by hose not more than 125 feet in length. Not more than 20 feet will be allowed for the throw of a hose stream. When there are two or more risers in standpipe equipment, all risers shall be cross-connected by piping of a diameter at least equal to the diameter of the largest riser but in no case less than three inches. No standpipe riser shall be less than three inches in diameter.
G.
Water supply. Where standpipes are required, no street supply shall be less than three inches in diameter, and the branches for the supply of the standpipe system shall be taken off on the street side of the water meter and shall be fitted with an approved check valve and gate valve at a point where the branch is taken from the main hose supply.
H.
Siamese connections. Each standpipe system shall be provided with one or more approved-type Siamese connections for use by the Fire Department. The number and location of Siamese connections shall be as required by the Board of Trustees. Siamese connections shall be placed on the street front side of the building and shall be located not less than 18 inches and not more than 24 inches above grade and shall be readily accessible for Fire Department use. Each Siamese connection shall have cast in the body on top the word "standpipe." No siamese connection shall be less than three inches in diameter, and the piping connecting the Siamese connection to the system shall be not less than three inches in diameter. In each line between the Siamese connection and the standpipe system, there shall be placed an approved swing check valve, and between the Siamese connection and this check valve there shall be placed a half-inch open drip without a valve or cock extended to a sink.
I.
Hose outlets.
(1)
Where practicable, all hose outlets shall be placed within a stair enclosure. They shall be 2 1/2 inches in diameter and set not less than five feet and not more than six feet above the floor or landing. A spanner wrench shall be provided at each hose outlet valve.
(2)
In any case in which it is deemed by the Board of Trustees that sufficient protection will be secured by the use of smaller-diameter hose, a one-and-one-half-inch diameter outlet may be installed on a required standpipe.
J.
Nozzles. Two-and-one-half-inch fire hose shall be provided with approved smooth bore nozzles 15 inches in length. The outlet at the tip shall not be less than one inch nor more than 1 1/2 inches in diameter. All 1 1/2 inch fire hose shall be provided with approved smooth bore nozzles 12 inches in length, and the outlet at the tip shall not be less than 1/2 inch nor more than 5/8 inch in diameter.
K.
Hose. Hose shall be unlined linen. No single section of hose may be more than 50 feet in length. The minimum length of hose at any outlet shall be 25 feet. All hose used in connection with the standpipe system shall bear the approval label of the National Board of Fire Underwriters.
L.
Couplings and threads. Hose couplings shall be equal to hose couplings of the regular Fire Department pattern. All threads of hose standpipe valves and siameses shall be New York Fire Department standard threads.
M.
Racks. All standpipe hose shall be suspended from racks of stamped steel or malleable iron of approved swing-type construction so that they will permit the ready and easy release of hose for use. Racks shall be supported securely from the standpipe risers or wall. Where hose cabinets are used, they shall be conspicuously located and shall be of a size sufficient to permit the easy handling of hose and the operation of the valves.