1520
THE NEW ZEALAND GAZETTE.
[No. 58

alter the position of the disconnecting-trap, in such manner
and subject to such stipulations as may be set out in such
notice. The Board may from time to time renew any
notice given under this section.

57. Disconnected bath, sink, and lavatory vents need not
    extend more than 3ft. above the eaves unless otherwise
    ordered by the Inspector. Every vent-pipe must be of un-
    diminished size, without return bend, with educt or induct
    cowls approved by the Inspector, and it must not open near
    a window, a chimney, nor an air-shaft which ventilates a
    living-room.

58. All vent-pipes in an extension of a main building
    must be extended to such a height as may be deemed
    necessary by the Board, above the roof of the main building,
    when otherwise they would open within 30 ft. of the windows
    of the main house or of the adjoining house.

59. Branch drains need not be ventilated if the gully-
    traps are less than 15 ft. from the main house-drain, or
    unless ordered by the Board.

60. Traps subject to siphonage must have the waste-pipe
    leading therefrom vented by a special pipe taken from such
    a position that its entrance will not be fouled by the dis-
    charge of the traps. The vents must be not less than two-
    thirds of the diameter of the pipe they ventilate.

61. Vent-pipes must be of cast-iron, wrought-iron, or
    lead inside a building; dipped and folded galvanised iron
    may be used where they are entirely outside a building; and
    all shall be connected with the traps they ventilate by brass
    or lead ferrules, or other joints approved by the Inspector.

62. The various vent-pipes may be branched into a
    waste-pipe of the same class above the inlet from the highest
    fixture. They may be combined by branching together those
    which serve several traps of the same class. These vents
    must always have a continuous slope, and be as nearly
    vertical as possible, to avoid collecting water by condensation.

63. No vent-pipe shall be used as a waste-pipe. Rain-
    water-pipes shall not be used as ventilators. As far as
    possible all vent-pipes shall be placed outside buildings.
    No brick, earthenware, or house-chimney flue shall be used
    as a sewer-ventilator, nor to ventilate any drain or waste-
    pipe.

64. All inlets to drains or openings for ventilation shall
    be efficiently protected by proper gratings of ample area.
    The aggregate area of the apertures in any grating covering
    a ventilation-opening shall be not less than the sectional
    area of the pipe or drain to which such grating is fitted.

65. All bath, lavatory, sink, wash-tub, or other waste-
    pipes shall discharge into the open air, either directly over a
    trapped gully, at a height of not less than 6 in. nor more
    than 12 in. above the grating thereof, or over (and at a height
    of 3 in. above) a watertight channel led to a gully-trap and
    not being distant therefrom more than 6 ft. The effective
    area of the intake shall not be less than that of the pipe.

66. Where a safe is provided under any bath, sink, or
    other convenience it shall be provided with an overflow-pipe
    of lead not less than 1½ in. in diameter discharging into the
    open air through the nearest external wall.

67. Wastes from disconnected fittings (except urinals
    and slop-sinks) need not be ventilated unless they exceed
    12 ft. inclined or 18 ft. vertical in length, and branch wastes
    to such fittings if connected to a ventilated main waste may
    be 12 ft. in length without being ventilated, unless siphon-
    age occurs in a trap, in which case air must be supplied to
    the waste of that trap.

68. Waste-pipes must have an approved fall, be as free
    from bends and as short as possible.

69. Separate internal wastes shall be provided for each
    of the following classes of polluted waters, viz. :

(1.) Dirty water from baths, pantry and china-closet
sinks, lavatories, and wash-troughs, and other
waters with a small proportion of soap and dirt.

(2.) Greasy water from kitchen and scullery sinks where
grease-traps are required.

(3.) Sludge-water from factories, stables, cow-houses,
cab-stands, and other specially polluted surfaces
for which consent has been granted by the
Board.

(4.) Discharge from housemaid-slop sinks, public or
private urinals.

70. A main waste-pipe into which lavatories, baths, or
    kitchen-sinks discharge must be at least 2 in. in diameter,
    with at least 1½ in. branches, except for single lavatories and
    urinals, which may be 1¼ in.

71. Wastes in outhouses entirely disconnected from living-
    rooms and kitchens may be of 22-gauge galvanised iron for
    baths and wash-troughs.

72. No steam-exhaust blow-off or drip-pipe shall be con-
    nected with a drain or sewer, or with any soil or waste pipe
    connected with any drain or sewer.

73. No waste liquids or refuse products of any manufac-
    turing process shall be admitted into any sewer without the
    express sanction of the Board having been first obtained in
    writing under the hand of the Inspector, and such waste
    liquids or products shall, if necessary, be first passed through
    strainers of approved construction to prevent the passage of
    any solid matters other than sewage into the sewers.

Hot liquid shall not be allowed to flow directly into the
sewers, but shall be retained in properly constructed and
approved cooling-tanks until the temperature is reduced to
below 100° Fahr.

The Board may attach any conditions it thinks fit to any
such sanction, and breach or non-observance of any such
conditions shall be deemed an offence. The Board may at
any time, and of its own motion, revoke any such sanction
by writing, under the hand of the Inspector, delivered at the
premises where the manufacturing process is carried on.

74. The entrance to exit-pipes from all fixtures shall be
    furnished with suitable fixed strainers. The perforations in
    strainers must be small, but sufficient in number to enable a
    good scour of the waste-pipes.

75. Internal basin urinals must be small and of non-
    absorbent materials; the waste-pipe shall be of pottery-ware,
    lead, or glass-enamelled cast iron. The urinal must be pro-
    vided with an approved flushing-apparatus. The floor under
    urinals must be covered with non-absorbent material.

In hotels and other public places enamelled slate or other
approved water-troughs shall be provided, either raised above
the floor or sunk in an impervious floor, and kept full of
flowing water by some approved apparatus. The walls
behind and screens between urinals must be of non-absorbent
material. The screens must be free from the floor for a
portion of the width of divisions.

76. The waste-pipe from a slop-sink must be of lead or
    glass-enamelled cast iron, and be carried independently out
    to the open air, with a quick fall, and into a full-bore
    ventilated 2½ in. downpipe to the ground, where a gully-trap
    or disconnector trap must take the waste to the drain. The
    trap or waste-pipe must be well opened out to receive the
    sink-basin, and trap must be fitted out with a 1½ in. vent-
    pipe. The sink must be of approved material. Draw-off
    taps must not be used directly over slop-sinks unless at least
    2 ft. above the sink. Approved flushing-arrangements must
    be used.

77. Every drain shall be so arranged as to be self-cleansing,
    in order that it may remain at all times free from deposit.
    Where this cannot be effected without flushing, proper
    flushing-apparatus shall be provided in the manner directed
    by the Inspector.

78. Rain-water from roofs shall not communicate directly
    with any drainpipe, but must discharge over an open gully
    provided with proper trap and ventilator, or into an open
    channel leading to such trap and ventilator.

Without special consent of the Board rainwater-conductors
must not be connected with sewers. All stables, dairies,
paved yards, cab-stands, or other places for which the Board
may from time to time grant consent to be connected with
the sewers or drains must be properly graded, cemented, tar-
paved, flagged, or well paved, and properly drained, and
must be trapped with an approved gully-trap.

79. No pipe leading from the district water-mains or from
    any service-pipes connected therewith shall on any pretext
    whatever be connected directly with any urinal, trap, drain
    or sewer; where water-supply is required, the water-pipe
    must in all cases deliver with a free outfall into an open
    cistern above the highest water-level of such cistern.

80. All openings for ventilation made in accordance with
    these regulations or by order of the Inspector shall at all
    times be kept open and free from obstruction. Every
    occupier shall at all times see that all openings to the
    drains on his premises, whether for ventilation or otherwise,
    and all traps and other fittings, are at all times in good
    order, clean, and free from obstruction.

81. No person shall interfere with, break up, or remove
    any gully, ventilation-shaft, manhole, lamphole, or any part
    of the sewerage or drainage system without the Board’s
    permission, or throw or deposit in any drain or sewer, or
    any drain or sewer accessory, any garbage, offal, dead
    animals, vegetable-parings, ashes, cinders, rags, or any other
    matter or thing which may injuriously affect the sewers.

82. It shall be the duty of the owner of any premises in
    which any water-closet, urinal, drain, trap, sink, gully,
    waste-pipe, ventilation-shaft, or other sanitary appliances
    are erected to keep the same and all appliances connected
    therewith in good and substantial repair, and good and
    efficient working-order; and it shall be the duty of the
    occupier of any such premises to keep all such things as
    aforesaid clean and (same as to ventilation-shafts) properly
    flushed with water, and if and when necessary to effectively
    disinfect the same; and when any drains are opened up,
    either on private ground or in public streets, proper dis-
    infectants shall be used, or caused to be used, by the person
    causing such drains to be so opened up.

83. The ground underlying every building shall be so
    formed and graded that no water can lodge thereon or under
    any part of such building.

84. Any footpath, road, channel, kerb, or other property