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<br />matter or garbage or any thing other than the ordinary dis-
<br />charge of water closets, liquid house slops and closet paper;
<br />provided that this section shall not be construed to prohibit
<br />the use of automatic household garbage disposal units.
<br />•
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<br />The City Manager reserves the right to order the owner to
<br />discontinue the discharge of waste other than sanitary sewage
<br />which is found to be causing damaging or harmful effects on
<br />the sewage lines and/or disposal plants within a period of
<br />sixty days after notification.
<br />(b) Pipe, Fittings and Layout.
<br />Pipe and fittings for chemical and industrial waste lines
<br />shall be of materials unaffected by the discharge of such
<br />waste. All materials and layouts for chemical and industrial
<br />waste disposal and waste lines must be submitted to the
<br />Plumbing Board for approval.
<br />22.1-54. Water Closets for Public Use.
<br />Water closet bowls for public use shall be elongated type
<br />with open front seat less cover.
<br />22.1-55. Prohibited Water Closets.
<br />Blowout, pan, valve, plunger, offset, washout, latrine, frost -
<br />proof, and other water closets having an invisible seal or an
<br />unventilated space or having walls which are not thoroughly
<br />washed at each discharge, shall be prohibited. Any water
<br />closet which might permit siphonage of the contents of the
<br />bowl back into the tank shall be prohibited.
<br />22.1-56. Trailer Coach Plumbing Standards.
<br />Plumbing standards for trailer coaches shall be according
<br />to the State Plumbing Code of the Commonwealth of Virginia.
<br />ARTICLE VI—SEWERS.
<br />22.1-57. Separate Building Sewers.
<br />Each house sewer from the public sewer in the street to the
<br />building shall be separate and independent of any other house
<br />sewer. All buildings on one lot which cannot be sold sepa-
<br />rately, may connect into one sewer, connection. In a row of
<br />tenements, each tenement shall have a separate sewer con-
<br />nection into the public sewer.
<br />22.1-58. Building Sewer.
<br />(1) The building sewer beginning five (5) feet outside of
<br />the inner face of the building wall shall be of cast iron or
<br />vitrified clay pipe.
<br />(2) No main building sewer shall be less than four (4)
<br />inches in diameter.
<br />(3) Only cast iron pipe will be permitted less than one (1)
<br />foot below grade surface.
<br />(4) All joints in vitrified clay pipe must be made by caulk-
<br />ing ring of oakum in hub and pouring hub with JC 60, CPI 2,
<br />Root Seal, or other compounds approved by the Research
<br />Laboratory of the National Clay Pipe Mfrs., Inc.
<br />approved concrete cradle, and in the event of undercutting
<br />trench in solid ground, same shall be brought to grade level
<br />with crusher run grade of stone.
<br />22.1-62. Connection of House Sewer to City Sewer.
<br />(1) All connections to mains of the City sewerage system
<br />shall be made by the use of a terra cotta saddle on the line,
<br />or a terra cotta wye in the line.
<br />(2) The invert of the house sewer shall be at or above the
<br />level of the crown of the city sewer at the connection thereto.
<br />22.1-63. Sanitary Waste Lines Below Building Sewer.
<br />(a) Automatic Pumping Equipment.
<br />Sanitary waste lines which cannot be discharged in the
<br />sewer by gravity flow may be discharged into a tightly covered
<br />and vented sump from which the liquid shall be lifted and dis-
<br />charged into the building gravity drainage system by auto-
<br />matic pumping equipment.
<br />(b) Storage Period.
<br />The sanitary sewer storage capacity of any sump or ejector
<br />shall be such that the retention of sewage under normal flow
<br />condition shall not exceed a period of twelve (12) hours.
<br />(e) Design.
<br />Sump and pumping equipment shall be so designed as to
<br />discharge all contents accumulated in the sump during the
<br />cycle of emptying operation.
<br />(d) Venting.
<br />The system of drainage piping below the sewer level shall
<br />be installed and vented in a manner similar to that of the
<br />gravity system.
<br />(e) Duplex Equipment.
<br />Sumps receiving the discharge of more than six water
<br />closets shall be provided with duplex pumping equipment.
<br />(f) Vent Sizes.
<br />Building sump vents shall be sized in accordance with
<br />Table 6 but shall in no case be sized less than 11/z inches.
<br />(g) Separate Vents.
<br />Vents from pneumatic ejectors or similar equipment shall
<br />be carried separately to the open air as a vent terminal.
<br />22.1-64. Discharge of Steam Exhaust and Heated Water.
<br />(1) No steam exhaust, blow -off pipe, sediment or drip pipe
<br />from a steam boiler shall be connected with any sewer, drain,
<br />soil, waste, vent or rain water leader. Such pipes shall dis-
<br />charge into an open tank or condenser, from which a proper
<br />connection to the building sewer or drain must be provided.
<br />(2) No water hewed to a temperature higher than 180
<br />degrees F. will be permitted to discharge directly into any
<br />drainage system. Fixtures discharging waste at a higher
<br />temperature than 180 degrees F. shall be provided with a
<br />satisfactory cooling device.
<br />ARTICLE VII—FLOOR DRAINS AND CATCH BASINS.
<br />22.1-65. Free Area of Floor Drain.
<br />Floor drains shall have a strainer with a free area equal
<br />to soil pipe to which it connects.
<br />22.1-66. Size.
<br />Floor drains shall be not less than 2 inches in diameter
<br />and limited to drain area of 400 square feet.
<br />22.1-67. Floor Drains Near Base of Soil Stack.
<br />No floor drain can be connected with the building drain
<br />within a distance of five feet downstream from the base of
<br />the soil stack receiving the discharge from water closets with-
<br />out venting.
<br />22.1-68. Floor Drains in Relation to Sink Waste Lines.
<br />Floor drains shall be independent of sink waste lines; pro-
<br />vided, however, where conditions exist that it is impractical
<br />to connect floor drains to main sewer lines they may be con-
<br />nected to sink lines, provided the sink waste line to which it
<br />connects is 3 inches in diameter or one pipe size larger than
<br />that given for total fixture units discharging into it, which-
<br />ever is the greater, and shall continue at this size until turning
<br />22.1-52. Commercial Disposal Unit.
<br />Any commercial or business establishment on a line flowing
<br />into the City sewage system may be granted a permit by the
<br />City Manager to discharge its wash or refuse therein through
<br />automatic disposal units, if the City Manager finds that such
<br />wash or refuse will not be damaging or harmful to and will
<br />not overload any portion of such sewage system.
<br />The City Manager reserves the right to order the owner to
<br />discontinue the use of any automatic disposal unit which is
<br />found to be causing damaging or harmful effects on the sew-
<br />erage lines and/or disposal plants within a period of sixty
<br />days after notification.
<br />22.1-53. Chemical
<br />and Industrial Waste.
<br />(a) Special Permit.
<br />•
<br />A special permit must be obtained from the City Manager
<br />before any waste
<br />other than sanitary sewage can be discharged
<br />into the City sewerage system. Such permit shall set forth
<br />the concentration and volume of such
<br />waste permitted to be
<br />discharged, but in no case shall a permit be granted where
<br />such waste will be damaging or harmful to the sewerage
<br />system and/or sewage treatment plants.
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<br />L J
<br />The City Manager reserves the right to order the owner to
<br />discontinue the discharge of waste other than sanitary sewage
<br />which is found to be causing damaging or harmful effects on
<br />the sewage lines and/or disposal plants within a period of
<br />sixty days after notification.
<br />(b) Pipe, Fittings and Layout.
<br />Pipe and fittings for chemical and industrial waste lines
<br />shall be of materials unaffected by the discharge of such
<br />waste. All materials and layouts for chemical and industrial
<br />waste disposal and waste lines must be submitted to the
<br />Plumbing Board for approval.
<br />22.1-54. Water Closets for Public Use.
<br />Water closet bowls for public use shall be elongated type
<br />with open front seat less cover.
<br />22.1-55. Prohibited Water Closets.
<br />Blowout, pan, valve, plunger, offset, washout, latrine, frost -
<br />proof, and other water closets having an invisible seal or an
<br />unventilated space or having walls which are not thoroughly
<br />washed at each discharge, shall be prohibited. Any water
<br />closet which might permit siphonage of the contents of the
<br />bowl back into the tank shall be prohibited.
<br />22.1-56. Trailer Coach Plumbing Standards.
<br />Plumbing standards for trailer coaches shall be according
<br />to the State Plumbing Code of the Commonwealth of Virginia.
<br />ARTICLE VI—SEWERS.
<br />22.1-57. Separate Building Sewers.
<br />Each house sewer from the public sewer in the street to the
<br />building shall be separate and independent of any other house
<br />sewer. All buildings on one lot which cannot be sold sepa-
<br />rately, may connect into one sewer, connection. In a row of
<br />tenements, each tenement shall have a separate sewer con-
<br />nection into the public sewer.
<br />22.1-58. Building Sewer.
<br />(1) The building sewer beginning five (5) feet outside of
<br />the inner face of the building wall shall be of cast iron or
<br />vitrified clay pipe.
<br />(2) No main building sewer shall be less than four (4)
<br />inches in diameter.
<br />(3) Only cast iron pipe will be permitted less than one (1)
<br />foot below grade surface.
<br />(4) All joints in vitrified clay pipe must be made by caulk-
<br />ing ring of oakum in hub and pouring hub with JC 60, CPI 2,
<br />Root Seal, or other compounds approved by the Research
<br />Laboratory of the National Clay Pipe Mfrs., Inc.
<br />approved concrete cradle, and in the event of undercutting
<br />trench in solid ground, same shall be brought to grade level
<br />with crusher run grade of stone.
<br />22.1-62. Connection of House Sewer to City Sewer.
<br />(1) All connections to mains of the City sewerage system
<br />shall be made by the use of a terra cotta saddle on the line,
<br />or a terra cotta wye in the line.
<br />(2) The invert of the house sewer shall be at or above the
<br />level of the crown of the city sewer at the connection thereto.
<br />22.1-63. Sanitary Waste Lines Below Building Sewer.
<br />(a) Automatic Pumping Equipment.
<br />Sanitary waste lines which cannot be discharged in the
<br />sewer by gravity flow may be discharged into a tightly covered
<br />and vented sump from which the liquid shall be lifted and dis-
<br />charged into the building gravity drainage system by auto-
<br />matic pumping equipment.
<br />(b) Storage Period.
<br />The sanitary sewer storage capacity of any sump or ejector
<br />shall be such that the retention of sewage under normal flow
<br />condition shall not exceed a period of twelve (12) hours.
<br />(e) Design.
<br />Sump and pumping equipment shall be so designed as to
<br />discharge all contents accumulated in the sump during the
<br />cycle of emptying operation.
<br />(d) Venting.
<br />The system of drainage piping below the sewer level shall
<br />be installed and vented in a manner similar to that of the
<br />gravity system.
<br />(e) Duplex Equipment.
<br />Sumps receiving the discharge of more than six water
<br />closets shall be provided with duplex pumping equipment.
<br />(f) Vent Sizes.
<br />Building sump vents shall be sized in accordance with
<br />Table 6 but shall in no case be sized less than 11/z inches.
<br />(g) Separate Vents.
<br />Vents from pneumatic ejectors or similar equipment shall
<br />be carried separately to the open air as a vent terminal.
<br />22.1-64. Discharge of Steam Exhaust and Heated Water.
<br />(1) No steam exhaust, blow -off pipe, sediment or drip pipe
<br />from a steam boiler shall be connected with any sewer, drain,
<br />soil, waste, vent or rain water leader. Such pipes shall dis-
<br />charge into an open tank or condenser, from which a proper
<br />connection to the building sewer or drain must be provided.
<br />(2) No water hewed to a temperature higher than 180
<br />degrees F. will be permitted to discharge directly into any
<br />drainage system. Fixtures discharging waste at a higher
<br />temperature than 180 degrees F. shall be provided with a
<br />satisfactory cooling device.
<br />ARTICLE VII—FLOOR DRAINS AND CATCH BASINS.
<br />22.1-65. Free Area of Floor Drain.
<br />Floor drains shall have a strainer with a free area equal
<br />to soil pipe to which it connects.
<br />22.1-66. Size.
<br />Floor drains shall be not less than 2 inches in diameter
<br />and limited to drain area of 400 square feet.
<br />22.1-67. Floor Drains Near Base of Soil Stack.
<br />No floor drain can be connected with the building drain
<br />within a distance of five feet downstream from the base of
<br />the soil stack receiving the discharge from water closets with-
<br />out venting.
<br />22.1-68. Floor Drains in Relation to Sink Waste Lines.
<br />Floor drains shall be independent of sink waste lines; pro-
<br />vided, however, where conditions exist that it is impractical
<br />to connect floor drains to main sewer lines they may be con-
<br />nected to sink lines, provided the sink waste line to which it
<br />connects is 3 inches in diameter or one pipe size larger than
<br />that given for total fixture units discharging into it, which-
<br />ever is the greater, and shall continue at this size until turning
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