340 AUCKLAND PROVINCIAL GOVERNMENT GAZETTE.

on iron girders with brick arches, or on strong stone
landings at least 4 inches thick and tailed at least
9 inches into each of the two walls forming such
angle.

Chimney Jambs or Corbels.

25. The jambs, breast, and flue of any single or
    double chimney may be built upon stone or iron
    corbels above the ceiling of any lower storey, but the
    projection both of such jambs and breast must not in
    any case exceed 14 inches before the face of the wall
    or stack to which the same shall join, and the brick
    work must be arched or corbelled over the whole
    width of the chimney opening up to the line of the
    face of the jambs, in order to provide a solid bed for
    the back hearth.

Chimneys, Jambs, Openings, &c.

26. The jambs of every chimney must not be less
    than 8½ inches wide on each side of such opening.
    The breast of every chimney, and the front, back,
    width or partition of every flue must be at the least
    4 inches in thickness of bricks, and the joints of the
    work must be filled in with mortar or cement, and
    all the inside thereof, and also the outside, or face
    the interior of any building must be rendered or pargetted. And no flue may be used for a smoke flue which is of less internal diameter in any section than 8½ inches.

Chimney Backs.

27. The back of every single chimney opening in
    any building must be at the least 8½ inches thick, in
    any wall less than 18 inches thick, and at the least
    13 inches thick in any wall 18 inches or more than
    18 inches thick. If two chimneys be built back to
    back, then the thickness between the same must be at
    the least of the thickness described for the back of a
    single chimney opening.

Timber or Woodwork.

28. No timber must be placed over any opening for
    supporting the breast of any chimney, but there must
    be an arch of brick or stone over the opening of every
    such chimney to support the breast thereof, and unless
    the arch be semicircular, an iron bar or bars must be
    built into the jambs at the least 9 inches on each side
    to tie in the abutments, and no timber or woodwork
    must be placed or laid under any chimney opening or
    in any wall under any chimney opening within 18
    inches at the least of the surface of the hearth to the
    fireplace of such chimney opening, and no timber or
    woodwork must be nearer than one inch to the opening
    of any chimney, and no trimmer must be placed
    nearer than 18 inches to the front face of any chimney;
    neither shall it be lawful to build in, or insert the
    ends of any joists, rafters, beams or other timber
    whatever in any part of any chimney or flue.

Front Hearths.

29. Front hearths composed of a slab or slabs of
    brick, tile, stone, slate, marble, or other proper and
    sufficient substance, at the least 9 inches longer than
    the opening of every chimney when finished, and at
    the least 15 inches in the front of the arch over the
    same must be laid before the opening of every chimney;
    and in every floor, except the lowest floor, such slab
    or slabs must be laid upon brick trimmer arches, or
    upon a solid bed of cement concrete laid uniform in
    thickness and without a joint, to form a bed for the
    hearth and front hearth or hobs, provided, neverthe-
    less, that the boarding under the front hearth to
    carry the concrete bed be not nearer to the finished
    surface of the hearth than 6 inches at the least.
    Should the joists not be deep enough to allow of such
    depth of 6 inches being obtained, a brick trimmer
    arch must in all cases be used. In the lowest floor
    the slab or slabs may be laid on a brick or stone
    fender, or bedded on the solid ground.

Back Hearths.

30. The back hearth of every chimney must be laid
    and bedded wholly on brick or stone, or other incom-
    bustible materials, which must be solid for a depth
    of 9 inches at the least below the surface of the
    hearth.

Ovens, Furnaces, &c.

31. Every oven, furnace, close fire or forge, for the
    purpose of trade or manufacture, must be 6 inches at
    the least distant from any party wall, and must not
    be upon or within a distance of 18 inches of any
    timber or wood work, and the floor on or above
    which such oven, furnace, or close fire, or forge shall
    be built or fixed must be formed and paved under
    same, and for a distance of 2 feet all around the
    same, with stone, brick, tile or slate, at the least two
    inches thick, or with other proper incombustible
    materials.

Chimney Shafts.

32. Every chimney shaft, or flue hereafter built, raised
    or repaired, must be carried up in brick or stone
    work all round, at least 4 inches thick, to a
    height of not less than 3 feet above the highest part
    of such portion of the roof, flat or gutter adjoining
    thereto, measured at the point of junction, and as to
    any chimney shaft (except that of a steam engine,
    brewery, distillery, or manufactory), the brick or stone
    work of such shaft or flue must not be built higher
    than 8 feet above the slope, flat, or gutter of the roof
    which it adjoins, measured from the highest point of
    junction, unless such chimney shaft be built of in-
    creased thickness, or be built with or bonded to
    another chimney shaft, or be otherwise rendered
    secure. And as to the chimney shaft for the boiler
    furnace of any steam engine, or for any brewery,
    distillery, or manufactory, such shaft may be erected
    of any height, so that it is built in such manner and
    of such strength and dimensions as shall be satisfac-
    tory to the Building Surveyor, upon special applica-
    tion in each case.

Stoves.

33. Every detached stove set or fixed in any build-
    ing, shall be fixed subject to the requirements for
    furnaces, &c., contained in Section 31 of these regu-
    lations.

Smoke Pipes.

34. No smoke pipe or funnel must be fixed against
    or in front of any face of any building in any street
    or alley, nor on the inside of any building nearer
    than 14 inches to any timber or other combustible
    material.

Alterations to Flues.

35. No chimney shaft, jamb, breast, or flue, already
    built or hereafter to be built, shall be cut into for
    any purpose whatsoever without the consent of the
    Building Surveyor having been first obtained to
    the proposed alterations.

Sheds, &c.

36. Nothing in the foregoing regulations shall pre-
    vent the erection of any shed open on all sides without
    fire places, furnaces or forges, and with supports to
    roof of iron, brick or stone, not exceeding 18 inches
    diameter, and roofed with iron or slates; provided
    such shed be not erected nearer than 10 feet to any