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ply of water is assured, and no steam exhatrst or steam <br />from the waste pipe shall be connected with any house drain <br />or soil pipe. No opening sliall be allowed in the sewer <br />pipe of any building for the purpose of receiving the <br />surface draitrage of the cellar, unless special permission <br />is granted,and in accordance with the specifications of the <br />City Engineer. No brick, sheet -metal, eartitenwai e or <br />chimney flue shall be used as a sewer ventilator, or to <br />ventilate any trap, drain, waste, or soil pipe. <br />1 <br />SEC. 2o.—The least inclination that can be allowed for <br />water closet, kitchen and all other drains of not over six <br />inches diameter, liable to receive solid substances, is one <br />half an inch in two feet: and for cellars and other drains, <br />to receive water only, one fourth of an inch in two feet. <br />'The deptli of crown of a drain at the curb line should be <br />determined by rise of one fourtli of an inch per foot <br />from the clown of the sewer directly opposite <br />SEC 21 —Tlre ends of all pipes not to be immediately <br />connected witli a, e to be securely stopped by brick and <br />' <br />cement, or other water tight and imperishable materials. <br />SSC. 22.—I'lie inside of every drain after it is laid, <br />must be left smooth and perfectly clean throttghot-t its <br />enure lengtii : and to insure the saute,a scraper of suita- <br />ble material of th- same shape of the pipe acrd slightly <br />less in diameter, sliall be drawn through eacli lengtli of <br />pipe after it has been la d. <br />SHC 23 —Plan fur Plumbing. Drawings showing plans <br />of proposed pluinl)ing shall ire presented with application <br />for permissiou to make coni e •bolls, and shall br made on <br />siwtA of wltiie paper 8 x 12 ruclies; shall be drawn tri ttrk, <br />and after approved by the pity Engineer shall be filed <br />with the application they accompany in the office of the <br />Supt of Sewerage. <br />��.0 24.—Water closets mast not be located in the <br />sleeping apartment of anv building, nor in ani room or <br />a pas tntent wluch has not direct cernrntinicatton with the <br />external air, either by a wir;dow or air shaft having an <br />a; ea to the open air of at least four square feet. <br />'-,t•:c 25.—.' 11 branches connections with public sewer <br />shall be constructed with six inch vitrified eartl,enware <br />pi e of the best quality or four inch cast iron pipe of <br />the best gnaliLv. free from all defects. The joints or the <br />pike, if eart'tenware be used, shall be made with gasket <br />and iuortar of g,,od fresh cement, and clean sharp sand <br />of equal parts, qnd if iron pipes be used, the joints shall <br />