1923 (#703-736) - Laserfiche WebLink

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Ail traps shall be rigidly supported and set true with respect to their water levels.. The use of a house trap or m~in drain trap is prohibited Drum traps may be used only in connection with bsth tubs, soda fountains, dental fixtures, ,nd drinking fountains. No fixture shall be tra~ed by having its waste connec- ted with the trap of .ny other fixture. Except as otherwise specified in this ordinance, all traps and vents sha~l be of the same size as their waste nines. Traps for chemical laboratory sinks shall be of cast iron, glass or vitreous ware. Trans for bss~ns, sinks, or other similar fixtures shall be made of lead, brass, or vitreous ware. Durham traps may be used on bath tubs or showers, only. SECTION 50 - SAND TRAPS: W~ere a sand trap is connec- ted to a sewer or cesspool it shall be constructed in the follow- ing manner: The walls and bottom shell be ~t least three (~) inches in thickness and built of concrete. A partition, the top of which is on a level with the flow line of the trap, shall be so placed as to nrevent the sand from entering the waste line. The outlet shall be constructed with a combination Y and one-eighth (1/8) bend or s~ntirary T wish a cleanout in the end thereof, and so olaced as to oar mit atrao seal of at least four (4} inches. The size of the tran shall be not less than eighteen (18) inches by thirty-six (~6) inches, and not less than eighteen (18) inche in depth. A cast iron cover shall be provided, one half of whicl shall be in the form of a grading. The cover shall rest on a cast iron angle frmme of sufficient size as to have one (1) inch bearing on the concrete walls of the trap. SECTION 51 - PERPENDICULAR VENTS: Ail vent pipes shall rise perpendicularly to ~ point six (6) inches above the levels of the fixture vented, except water closet vents, which, when the structural conditions of the building are such that it is imposs~ hie to get a nerpendicular vent, ~y run under the floor to the nearest nartition, ~rovided that in no case shall mny vent so constructed exceed three (~) feet in length under the floor. Where possible the vent pipe for ~ water closet or tra~ standard slon ~nk shal~ be taken from Y fitting and have a continuous rise of not less than forty five degrees, to aooint at least six (8) inches above the fixture. SECTION 52 - VENTS FOR SM~LI FIXTURES: Where more than one small fixture is to be vented into the same vent pipe, the size of such pipe shall be ~s follows: For not exceeding two (2) fixtures ..... 1 1/2 inches For more than 2 and not exceeding 8 .... 2 inches For more than 8 and not exceeding 12---2 1/2 inches Fore more than 12 a~d not exceeding 20-Z inches The ter~m "small fixture" shall mean any fixture using not larger than 1 1/2 inch waste pipe.