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199 <br /> <br />a full one and one half (1 1/2) inch galvanized coupling shall <br />be used. <br /> <br /> SECTION 62 - LAUNDRY TRAYS: Where laundry trays of not <br />more than two (2) sections are located on a screen porch or in <br />building used for laundry purposes such two (2) piece laundry <br />tray may be connected to one (1) trap and vent. <br /> <br /> When two (2) fixtures other than water closets discharg, <br />into a double TY, and there are no other fixtures discharging <br />above them, said fixtures may be back vented through a com~non <br />two (2) inch vent or back vent pipe. <br /> <br /> SECTION 63 PHOTOOHAPHERS' SINKS: Except in case of <br />photographic studio s~nks, no wooden plumbing fixture shall be <br />maintained or used in connection with any plumbing system, and <br /> <br />with said exception all plumbing fixtures <br />shall be of a non-absorbent material. <br /> <br /> SECTION 64 - OPEN PLUMBING: All <br /> <br />used or constructed <br /> <br />plumbing fixtures shaZ <br /> <br />be installed or set, free and open from all enclosing woodwork. <br /> <br /> SECTION 65 - WATER CLOSETS: Every water closet bowl <br />shall be of the one piece vitreous ware type, with trap and bowl. <br />No front washout water closet bowls will be permitted. <br /> <br /> SECTION 66 - CLOSET BENDS: Cast iron closet bends shah <br />have a cast.iron or brass floor flange. <br /> <br /> SECTION 67 - CLOSET ~'NNECTION TO FOUR INCH SOIL PIPE: <br />No wster closet shall d~scharge into a pipe less than four (4) <br />inches in diameter. <br /> <br /> SECTION 68 - RANGE CLOSETS OR LATRINES: The use of <br />maintenance of latrines or range closets is prohibited in all <br />cases, and where such exist they shall be removed and replaced <br />with closets conforming with the specifications herein contained <br /> <br /> SECTION 69 - TANK CLOSETS: No tank closet shall be put <br />into or upon any property, house or building unless such water <br />closet be flushed through a flush pipe of not less than one and <br />one quarter (1 1/4) inches inside diameter, and is used in con- <br />nection with a tank containing not less than four (4) gallons <br />Of water. <br /> <br /> SECTION 70 - CLOSET BEND OR STUB: The waste pipes of <br /> other plumbing fixtures-shall not enter the four (4) inch bend <br /> or closet stub. <br /> <br /> SECTION ~l - TPJ~P STANDARD SLOP SINK: Any trap stan- <br />dard slop sink may be vented in the same manner ss water closet <br />if it discharges ~hrough st least a four (4) inch waste line. <br /> <br /> SECTION V2 - SLOP HOPPER:. No slop hopper or trsp start <br />dard slop sink shall discharge through less than a three (3) <br />inch waste line. <br /> <br /> SECTION V3 - CHP~ICAL LABOHATORY ~AINKS: The waste and <br />ventilating pipes in connection with chemical laboratory plumb- <br />ing, and a!~ waste pipes and ventilating pipes receiving the <br /> <br /> <br />