ORD 0076 - Laserfiche WebLink

r~nd vents must be placed as near to the outlet of the less than that of the trap served, and if to set fixtures ~erved as practicable, all in conformity with closet, not less than 2-inch bore. thi.~x section. Sec. 24. VENTS. All vent or air pip~ Exceptin2; as provided for ranges of closets and run of undiminished size separately or combin~ urinal~ and for wash trays discharg'ing into hoppers or the roof, and for one foot above, and to be sc:ull,.!ry ~;inl,:~% every fixture must be separately trapped. Ventilating pipes must be run ~vith as rex Exael':tlng as specified in these rules, in no case shall possible, and excepting as provided for, mu ~]t:~ traps cfone fixtm'e cent. act with the trap of another to and with the main vent, at an angle of z. fixture. and be increised in size every thirty feet. Exceptin;r as heroinafter provided for in this' sac- When combined the vent pipes must be i~ ~fion, in no case shall the trap serving a fixture be. size according to the following table. Branch placed at a distance greaLer than one foot from_ the out- ip-g water closets shall not be of a size les let of the fixture it serves, nor shall the ven~ pi'?e serv- fined in the following table. h~' a trap be phicod at a distance grea~er It':an 30 inuhes See. 25. TABLE OF SIZES OF VENTS, From the trap it serves. VENTS, SIZE OF VENTS AND FIXTK When a sink and a wash tray abut one another, and LOWED. they are pract!ca!ly one fixture and they are in the Four small fixtures into 11-2 inch vent. stone room, then they, or it, may'be served by one trap. One to three water closets or six small fi A xvash tray located on a porch and discharginL;' into 2 1-8 inch vent. an intercepting fixture, if within the 5-foot limit, need Four to five water closets or 10 small fi not be separately vented. But if the outlet of tb.e C~ay a 2 1-2 inch vent. exc. eeds the 5-foot limit, then they shall be separately Six to eight water closets or 16 small fi trr:pped, wasted and vented. a 3-inch vent. Excepting as otherwise provided for a sink and a Nine or more ~vater closets or 17 small fi wash tray, in no other case shall any other fixture dis- a 4-inch vent. chrage into a hopper, scullery sink or any other fix'~ure, One and one-half inch (11-2 in.) vent and a sink or tray may so discharge only when the in- shall be allowed as provided for in these rub [srcepting fixture is located upon a porch. (Note. The term "Branch Vent" as he Sec. 22. SURFACE DRAINAGE. No opening sha]l shall be construed to mean all that vent pipe be provided in the sewer or drain pipe of any building' tween the fixture served and the point whe3 for the purpose of drainage, unless the said opening be joins and intersects with the main vertical properly trapped and supplied with water from a suit- Vents serving two water closets dischar~ able fixture double branch Y, or its substitute, shall b When ~, surface rain is situated at a distance great- less than a 3-inch vent pipe and must compl er than 20 feet, reckoning in a horizontal line from s~xid agraph 2, section 27. suitable fixture, then the drain may be supplied by a Single 1 1-2 inch traps may be vented ho~e bibb. inch vent pipe when the vent does not exc{ Bell traps are strictly prohibited in every and all long. cases. Sec. 26. All vent pipesi and the fittin~ See. 23. TRAPS TO BE VENTED. To pro-ide must be so arranged that no sediment shall c{ e, dequate circulation of air, prevent back pressures and in, but the sediment shall discharge into t to prevent syphonage, special air pipes of galvanized pipes, so as to be carried off by the wastag~ xvrought iron or cast iron shall be provided, and except- and ~vhere architectural conditions requir~ ing as provided in these rules, they shall be of a bore not bottom of the vent shall be carried to and 116 117