_SEP 16 1963-DEC 19 1977 ORDINANCES 4 COUNCIL

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to the vertical with cleanout at base of stack equal to size of horizontal waste. 22.1-69. Catch Basins. Catch Basins at Garages or Filling Stations -When Re- quired. All public garages or filling stations using wash racks or drain pits in the servicing of automobiles shall be so arranged that the drainage from the wash rack or drain pit will dis- charge into a catch basin built of concrete or other waterproof material. Such catch basin shall not be less than twenty-four inches square (inside) and two feet deep, walls six inches or more thick and covered with a heavy iron removable grating bear- ing at least one inch on all walls, trap to be formed with four inch tee with cleanout caulked into end; top of tee to be set not more than six inches below floor level. End of pipe to be more than six inches from bottom of basin. ARTICLE VIII-CLEANOUTS. 22.1-70. Locations. A 4 inch cleanout shall be inserted in the house sewer im- mediately at the interior or exterior of the building wall, and shall be placed in the main and branch drains not less than forty (40) feet apart, and at base of every stack; cleanouts for sink waste lines shall be installed at every change in direction. 22.1-71. Size and Type. Cleanouts for cast iron pipe to have brass plugs with standard threads and iron bodies suitable for soil pipe in which they are used, standard iron plugs may be used in Durham fittings and all cleanouts must be of same size as pipe they serve, up to and including four inch. ARTICLE IX -SHOWER COMPARTMENTS. 22.1-72. Pans for Shower Compartments. Lead pans for shower compartments shall weigh not les_ s than six (6) pounds per square foot. Copper for shower pans shall weigh twelve (12) ounces per square foot. Plastic shower pans composed of eight (8) ply Kraft paper, bonded by seven (7) layers catalytic asphalt and reinforced with three (3) layers of glass fibre, with Polyethelene facing sheets, weight 0.40 pounds per square foot may be used. ARTICLE X -MATERIAL. 22.1-73. The Weights and Measurements of Cast Iron Pipe and Fittings. The weight and measurements of cast iron pipe and fittings shall be according to that set forth by the Department of Commerce regulation C S 188-59 and all pipe and fittings are to be coated. 22.1-74. Material for Above Ground Piping in Buildings. Soil and waste piping for drainage and vent system within a building shall be of cast iron, galvanized wrought iron, galvanized open-hearth iron, galvanized steel, lead, brass or copper pipe, or D. W. V. copper tubing. 22.1-75. Material for Underground Piping Within Building,-,.- All uildings. All drains within a building when underground shall be of cast iron soil pipe. For buildings less than three (3) stories in height the pipe may be service weight. For buildings three (3) stories or more in height the pipe shall be of extra -heavy weight. 22.1-76. Fittings. Fittings on the drainage and vent system shall conform to the type of piping used. Fittings on screwed pipe shall be of the recessed drainage type, black or galvanized. ARTICLE XI -GENERAL PIPE WORK. 22.1-77. Pipe Connections. Whenever connections are made to existing waste or vent lines, inside of buildings, proper fittings for connection shall be used. .Tapping of pipe or the use of saddles shall not be permitted. 22.1-78. Joints for Cast Iron Soil Pipe. Caulked joints on all cast iron drain, soil, waste or vent pipe must be made by packing the hub with oakum and run with molten pure pig lead not less than one inch deep and not to extend more than 1/8 inch below rim of hub, hand caulked to make joint gas tight. 22.1-79. Ream Pipe. On all galvanized wrought iron or galvanized steel soil, waste or vent pipe, the ends of pipe must be carefully reamed to prevent a reduction in the bore. 22.1-80. Changes in Direction. All drains shall be run as straight as practicable. Changes in direction shall be made with "Y" branches and one -six- teenth, one eighth, or one sixth bends or long sweep bends. Sanitary tees or short one-quarter bends can be used when set upright to receive vent outlet and also in soil stacks to receive closet and other fixture connections. 22.1-81. Connections to Closet Bends. Waste pipe from minor fixtures may connect to closet bends. • Any waste connection from minor fixture discharging into closet bends which are less than 4 inches in diameter must be back -vented. ARTICLE XII -DRAINAGE SYSTEM. 22.1-82. Kitchen and Laundry Type Fixtures. Waste lines for kitchen and laundry type fixtures shall con- nect to stack or waste line independently of bathroom type fixture waste lines. Sink waste line shall be not less than 2 inches in diameter up to fixture branch. 22.1-83. Wet Venting Kitchen and Laundry Type Fixtures. Kitchen and laundry type fixtures may be wet vented, pro- viding the total developed length of wet vent shall not be more than 15 feet, and shall not be less than one pipe size larger than that given in Table 4 for total fixture units draining M into it. 22.1-84. Soil Stack Offsets. (a) Offsets of 45 Degrees or Less. An offset in a vertical stack, with a change of direction of 45 degrees or less from the vertical, may be sized as a straight vertical stack. In case a horizontal branch connects to the stack within 2 feet above or below the offset, a relief vent shall be installed in accordance with Sec. 22.1-116(d). (b) Waste Stacks Serving Kitchen Sinks. In a one -or -two family dwelling only in which the waste stack or vent receives the discharge of a kitchen -type sink and also serves as a vent for fixtures connected to the hori- zontal portion of the branch served by the waste stack, the minimum size of the waste stack up to the highest sink branch connection shall be 2 inches in diameter. Above that point the size of the stack shall be governed by the total number of fixture units vented by the stack. (c) Above Highest Branch. An offset above the highest horizontal branch is an offset in the stack vent and shall be considered only as it affects the developed length of the vent. (d) Below Lowest Branch. In the case of an offset in a soil or waste stack below the lowest horizontal branch, no change in diameter of the stack because of the offset shall be required if it is made at an angle of not greater than 45 degrees. If such an offset is made at an angle greater than 45 degrees the required diameter of the offset and the stack below it shall be determined as for a building drain (Table 3), provided however, no horizontal stack line serving water closets shall be less than 4 inches in diameter. (e) Offsets of More than 45 Degrees. A stack with an offset of more than 45 degrees shall be sized as follows: 0