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§ 1517.11
<br />DWELLING HOUSE CODE
<br />non-fuel-fired-. An incinerator which
<br />uses no fuel for combustion other than the
<br />refuse to be incinerated, except that a gas
<br />flame, without blower or other means may
<br />be used to accomplish primary ignition.
<br />Incombustible. Noncombustible,
<br />Indirect waste pipe. A waste pipe which does
<br />not connect directly with the drainage
<br />system, but discharges into a properly
<br />trapped fixture or receptacle which is di-
<br />rectly connected to the drainage system.
<br />Individual vent. A' pipe installed to vent a
<br />fixture trap and connected to the general
<br />vent system at a point above the fixture
<br />or terminating in the open air. Compare:
<br />Revent pipe.
<br />Interior finish. The surface finish of an in-
<br />terior wall or ceiling and includes finish
<br />which is integral with the wall or ceiling
<br />material; also finish which is applied there-
<br />to such as wainscoting, paneling, acousti-
<br />calmaterial, fabric, paint or other material
<br />applied for decoration. .
<br />1517.11 Letter "J."
<br />1517.12 Letter "F{:"
<br />Kitchen. See Room: kitchen.
<br />Kitchenette. See Raom: kitchenette,
<br />1517.13 Letter "L."
<br />Lath. A building ,material, of wood, metal,
<br />gypsum, or insulation board, that is
<br />fastened to the frame of a building or fur-
<br />ring to act as a plaster base.
<br />Leader. See Downspout.
<br />Length, developed. See Developed length.
<br />Lintel. A horizontal structural member
<br />which supports the load over an opening
<br />such as for a door or window.
<br />Listing. A ,compilation of products, devices
<br />or equipment tested as satisfactory by an
<br />accredited inspection or testing laboratory
<br />and listed as complying with the estab-
<br />lished requirements for a particular classi-
<br />fication or use.
<br />Living unit, A dwelling or portion thereof
<br />providing separate living, cooking, sleep-
<br />ing, bathing and toilet facilities for one
<br />family.
<br />Load:
<br />Dead-. The weight of all permanent,
<br />stationary construction and fixed me-
<br />chanical equipment or other installation
<br />included in a building.
<br />_ _ Live -. The total of all moving and vari-
<br />able loads that may be placed upon a
<br />20
<br />building, comprising loads imposed by oc-
<br />cupancy, snow loads and wind loads.
<br />Loop vent. The same as a circuit vent ex-
<br />cept that it loops back and connects with
<br />a stack vent instead of a vent stack, Com-
<br />pare: Circuit vent.
<br />Low temperature heat appliance. (low-heat
<br />appliance) . Heat appliances which op-
<br />erate at temperatures up to approximately
<br />1000 F, and shall include, among others,
<br />ranges, heating stoves, hot-water heating
<br />boilers, non-fuel-fired incinerators, steam
<br />boilers operating at not more than 50 psi
<br />gage pressure, warm-air furnaces and
<br />water heaters.
<br />Lumber: The product of the saw and planing
<br />mill not further manufactured than by
<br />sawing, resawing, and passing lengthwise
<br />through a standard planing machine,
<br />cross-cutting to length and worl~ing.
<br />- boa7•ds, Yard lumber with less than
<br />nominal 2 inches thickness.
<br />dressed size -. The dimensions of lumber
<br />after planing; usually 3/a" to ~/z" less than
<br />the nominal size.
<br />Frame -. Light wood members with a
<br />nominal dimension of at least 2 inches,
<br />Kiln-dried -. Lumber dried by artificial
<br />heat to a moisture content which is less
<br />than can normally be obtained through the
<br />natural process commonly known as air
<br />seasoning.
<br />Matched-. Lumber that is edge dressed
<br />and shaped to make a close tongue-and-
<br />groove joint at the edges and or ends
<br />when laid edge-to-edge or end-to-end.
<br />Nominal size -. As applied to timber or
<br />lumber, the ordinary commercial size by
<br />which it is known and sold in the market.
<br />Rough-. Lumber undressed as it comes
<br />from the saw mill.
<br />Shiplapped -. Lumber that is e d g e
<br />dressed to make a close rabbeted or lapped
<br />joint.
<br />Sur faced -. Lumber that is dressed by
<br />'running it through a planer.
<br />Yard -. The normally available stock of
<br />the lumber yard, not necessarily graded
<br />for strength, but suitable for general build-
<br />ing purposes,
<br />1517.14 Letter "M."
<br />Main. The principal artery of any system of
<br />continuous piping to which branches may
<br />be connected.
<br />Maintenance: (As 'applied to electrical
<br />work) Maintenance is the servicing' of
<br />
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<br />• •
<br />105
<br />Plumbing
<br />in one piece and shall be provided with inte-
<br />gral flushing rims so constructed as to flush
<br />the entire interior of the bowl.
<br />(b) Supports. Wall-hung water-closet
<br />supports shall be of metal designed and in-
<br />stalled so that no strain is transmitted to the
<br />piping.
<br />1593.37 Water-closet tanks.
<br />(a) Flushing. Water-closet tanks shall
<br />have a flushing capacity sufficient to flush
<br />properly the water-closet bowl with which
<br />they are connected. The flush valve seat in
<br />close-coupled integral water-closet combina-
<br />tions shall be 1 inch or more above the rim
<br />of the bowl so that the flush-valve will close
<br />even if the closet trapway is clogged. Closets
<br />with flush-valve seats below rim of bowl
<br />shall be so constructed that, in case of trap
<br />stoppage, water will not flow continuously
<br />over the rim of the bowl.
<br />(b) Float valves. Float valves for water-
<br />closet tanks shall automatically close tight
<br />and, in low water-closet tanks, shall provide
<br />sufficient refill to properly seal the trap in
<br />the bowl,
<br />(c) Flush valves. Flush valves for water-
<br />closet tanks shall close tight and, in low
<br />tanks, shall have 2-inch shanks. Flush valves
<br />in high tanks may be of the gooseneck type
<br />and shall have 1~/z inch shanks.
<br />(d) Overflows. Flush valves in low water-
<br />closet tanks shall be equipped with an over-
<br />flow except when tank is provided with an
<br />integral overflow. Overflows on flush valves
<br />and overflows integral with tank, and goose-
<br />neck type flush valves shall be arranged and
<br />installed as prescribed in American Stand-
<br />ardfor Air Gaps in Plumbing Systems, ASA
<br />A40.4, or, where it is not feasible to provide
<br />an air gap, shall be equipped with backflow
<br />preventers conforming to the provisions of
<br />American Standard for Backflow Preventers
<br />in Plumbing Systems, ASA A40.6.
<br />(e) Flush pipes. Flush pipes shall be not
<br />less than 2-inch for low-tank and li/4 inch
<br />for high-tank combinations.
<br />1593.38 Direct flush valves.
<br />Direct flush valves shall be used only when
<br />specifically approved by the Building Of-
<br />ficial and shall be installed in a manner to
<br />make them readily accessible for repairing.
<br />When a direct flush valve is operated it shall
<br />complete its cycle of operation automatically,
<br />opening fully and closing positively under
<br />the service pressure. At each operation the
<br />valve shall deliver water in sufficient volume
<br />and -at a rate that will thoroughly flush the
<br />fixture and refill the fixture trap. Means shall
<br />§ 1593:44
<br />be provided for regulating the flow to flush
<br />valves and they shall be arranged and in-
<br />stalled to conform to the provisions of sub-
<br />section 1593.37 (d) .
<br />1593.39 Floor, roof and area drains.
<br />All floor and area drains shall be trapped
<br />and equipped with a strainer. All roof drains
<br />connected to interior leaders shall be
<br />equipped with a strainer.
<br />1593.40 Additional prohibited fixtures,
<br />(a) Latrines: No latrines shall be installed
<br />except for temporary use and then only
<br />when approved by the Building Official.
<br />(b) Wooden trays and sinks. No wooden
<br />trays 'or sinks shall be installed except for
<br />special uses, and then only when specifically
<br />approved by the Building Official.
<br />(c) Sheet-metal-lined bathtubs. No sheet-
<br />metal-lined wooden bathtub shall be in-
<br />stalled or reconnected.
<br />1593.41 Defectflve fixtures.
<br />(a) Insu f~cient air gap. No fixture which
<br />does not provide a sufficient air gap or which
<br />may otherwise cause contamination of the
<br />water supply shall be re-installed unless
<br />altered in a manner approved by the Build-
<br />ing Official to eliminate hazards inherent in
<br />the fixture or assembly:
<br />(b) Removal. Every existing fixture
<br />deemed defective, and every existing fixture
<br />which does not conform to the provisions of
<br />this Dwelling House Code governing new
<br />installations and is deemed unsanitary and a
<br />hazard to health by the Building Official,
<br />shall be removed and shall be either replaced
<br />with a fixture conforming to the provisions
<br />of this Dwelling House Code or the connec-
<br />tions therefor sealed or removed.
<br />1593.42 Expansion and contraction of
<br />piping.
<br />Piping in a plumbing system :shall. be in-
<br />stalled without undue strains and stresses
<br />and provision 'shall'be made for expansion,
<br />contraction, and structural settlement, s
<br />1593.43 Supports for piping in concrete.
<br />Piping in concrete or masonry walls or
<br />footings shall be placed or installed in chases
<br />or recesses which will permit„access to the
<br />piping for repair or replacement.
<br />1593.44 Supports for vertical piping.
<br />Vertical piping shall be secured at suf-
<br />ficiently close intervals to keep the pipe in
<br />alignment and carry the weight of the pipe
<br />and contents.. Support for.the pipe shall be
<br />secure without excessive strain of joints or
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