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<br />GENERAL ORDINANCES 253
<br />this section will apply only to main 4" soil stack in buildings up
<br />to 4 stories in height and the number of such fixtures shall not
<br />exceed four.
<br />Fixtures located more than 4 feet from main or branch waste
<br />lines are to be back vented except as specified elsewhere.
<br />All openings left in soil, waste or vent pipes for any purpose
<br />and not used in finishing shall be closed so as to be gas and water
<br />tight and in case of vent pipe outlets where they are liable to
<br />hold water, they shall be connected to waste.
<br />Sec. 491(10) . Drains.
<br />House drain from a point three feet outside of building to one
<br />foot or more above roof are to be constructed of medium or bet-
<br />ter cast iron pipe and fittings, not less than four inches in diam-
<br />eter if horizontal and three inches vertically and shall have a
<br />minimum fall of one-eighth of an inch to a foot and when above
<br />ground shall be supported by strong hangers. All waste and
<br />vent pipes underground are to be of cast iron or lead.
<br />Where pipes pass through roofs they shall be flashed with an
<br />approved roof flange placed on and made tight.
<br />Sanitary "T's" or Crosses may be used in all vertical lines of
<br />soil, and waste pipes where fixtures are close enough to permit
<br />use of same. Sanitary "T's" will also be permitted in horizon-
<br />tal runs when used upright and directly under fixtures. Dou-
<br />ble "Y's" will be permitted in horizontal runs. Changes in di-
<br />rection must be made with "Y's" and 1/8 bends. Four inch or
<br />larger pipes below or above ground shall have a "Y" fitting with
<br />4 inch cleanout inserted in ends and on main lines not over thirty
<br />feet apart and three inch lines or smaller shall have "Y's" with
<br />two inch cleanouts not over twenty feet apart and also at ends
<br />for the purpose of cleaning. Cleanouts must be accessible, ex-
<br />tending from "Y" fittings either straight ahead or from branch
<br />to surface where underground in a straight line or when other-
<br />wise not accessible.
<br />The use of cast iron offsets to offset up to six inches and cast
<br />in one piece when used in vertical waste lines is also permitte i
<br />and offsets greater than six inches may be used on vertical vent
<br />lines.
<br />254 CHARLOTTESVILLE CITY CODE
<br />The use of heel outlet and side outlet fittings must be approved
<br />by the Inspector.
<br />Waste pipes must be of either cast iron, galvanized wrought
<br />iron, galvanized mild steel or lead and of the following sizes:
<br />WaterClosets ......................................
<br />4„
<br />SlopSinks ..........................................
<br />3"
<br />Wash Trays .........................................
<br />2"
<br />Bath Tubs ..........................................
<br />12„
<br />Shower Stalls (single) ................................
<br />2"
<br />Sinks...............................................
<br />1y,r
<br />Wall Urinals ........................................
<br />1/"
<br />Stall Urinals ........................................
<br />3"
<br />Basins (single) ......................................
<br />1%/„
<br />If screw pipe is used the fitting for same are to be galvanized
<br />recessed drainage fittings. Fittings for screwed vents, other than
<br />wet vents, may be regular galvanized malleable fittings.
<br />Waste pipes under floors of concrete or other inaccessible ma-
<br />terial shall be not less than two inches where over ten feet hor-
<br />izontal.
<br />Joints in cast iron pipe and fitting shall be so filled with oakum
<br />and lead or leadite, hand calked to make them gas and water
<br />tight.
<br />A brass floor flange shall be used in connecting earthenware
<br />water closets to outlet pipe and so fitted as to secure a water and
<br />air tight joint, and when set on tile or cement floors, putty, plas-
<br />ter Paris or cement may be used. White lead or varnish to be
<br />used with gasket and flange.
<br />Waste connections to slop sinks to be as above or by calking
<br />pedestal of slop sink into waste pipe hub.
<br />Connections for out door closets to be made by calking spigot
<br />end of bowl or trap into hub of waste pipe.
<br />All traps to be plain full bore traps, iron, lead or brass. Fix-
<br />ture traps are to be generally "P" traps and where "S" traps
<br />are necessary they are to be vented as directed by the Plumbing
<br />Inspector. No traps are to be less than 1Y2" inside diameter, or
<br />1'%" if they are brass traps. All traps 2" and less in diameter
<br />are to have trap screws.
<br />GENERAL ORDINANCES 255
<br />Lead waste pipes are to be of weight known in commerce as
<br />"D". Traps and bends to be of weights known as Standard.
<br />Ferrules are to be of brass, extra heavy and four inches long.
<br />Cleanouts shall be of acceptable material and construction.
<br />Brass pipe for traps and fixture connections to be not less
<br />than 17 gauge.
<br />Vertical waste pipes to receive discharge from not more than
<br />8 sinks, baths, lavatories, wash trays or similar fixtures shall
<br />be not less than 2" diameter and with branches not less than 1%".
<br />Connections between cast iron and lead pipes to be made with
<br />brass ferrules wiped onto lead pipe and calked into cast iron
<br />hubs.
<br />Connections between cast iron and screwed pipe to be made
<br />with cast iron fitting tapped and threaded or with screw pipe
<br />couplings calked into cast iron hubs.
<br />Connections between screwed pipe and lead pipe to be made
<br />with brass soldering nipples, wiped onto lead pipe.
<br />Connections between lead waste pipes, brass waste pipes and
<br />traps and lead pipes to be made with wiped joints and between
<br />brass waste pipes and traps and screwed pipe to be made with
<br />recessed sweat bushings, or metal to metal ground joint connec-
<br />tions. Packed slip joint connections will not be permitted on
<br />the sewer side of traps.
<br />Lead drum traps to receive waste from bath tubs, or bath
<br />tubs and lavatories, need not be back vented when within 4 feet
<br />of main waste pipe and where no water closets are located above
<br />such bath tub or lavatories. In cases where this distance ex-
<br />ceeds 4 feet the lead drum trap must be back vented by 1%" vent
<br />pipe.
<br />Sec. 491 (11) . Open drains and vent pipes.
<br />Cellar drains and area drains will be permitted when they are
<br />connected with an approved back water trap in connection with
<br />a deep seal trap.
<br />Drains into which the washing from automobiles or other
<br />liquids or substances of such nature as would be likely to stop
<br />up the sewers into which such drain empties, must be properly
<br />constructed and operated with sand trap; and no person, firm or
<br />256 CHARLOTTESVILLE CITY CODE
<br />corporation shall discharge into the sewers any substances of
<br />such nature as will stop up any sewer within the City.
<br />Cellar drains and sand traps will not be required to be vented
<br />when within fifteen feet of main or branch waste pipe, which
<br />extends through roof.
<br />Where a fixture is allowed to discharge into an open drain,
<br />a trap, but no vent will be necessary, but the waste pipe must
<br />not exceed fifteen feet in length unless approved by the in-
<br />spector.
<br />The fixtures must be connected with sewer where sewer is
<br />available.
<br />Sec. 491 (12) . Downspout connections.
<br />The connection of downspouts to storm water sewers are to
<br />be made with cast iron pipe extending above ground and calked
<br />into trap.
<br />Sec. 491 (13) . Refrigerator waste and steam exhausts.
<br />Waste pipe from refrigerators in which provisions are stored,
<br />shall not be connected directly with the drainage system, but
<br />shall waste into an open pan, or over a properly trapped and
<br />water supplied fixture.
<br />No steam, exhaust, blow -off or drip pipe from a steam boiler
<br />shall connect directly with the sewer or with any soil, drain,
<br />waste or vent pipe.
<br />Sec. 491(14) . Replacement of old fixtures.
<br />When new fixtures are introduced on old work, it will not be
<br />compulsory on the part of the owner to back vent same, but they
<br />shall have non -syphoning traps of approved type and in chang-
<br />ing closets, only syphon closets with tanks will be allowed.
<br />Where there are no closets above; it will not be necessary to
<br />back vent fixtures, but the soil or waste pipe must be in every
<br />case extended (not less than two inches in size) the required
<br />distance above the roof, or into other vent pipe above highest
<br />fixture. On repair of old work, in lieu of back vent pipe, a
<br />non -syphoning trap of approved type when connected with a
<br />wash basin, sink, urinal or wash tray, which is not more than
<br />fifteen feet from a main, will be permitted.
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