Section 28. Every sink, bath-tub, basin, water-closet, slop-hopper, dental cuspidor, and all outlets of chemical or experimental laboratory tables, or any fixture having a waste-pipe specified, defined herein or not, must be furnished with a trap, which shall be placed as close as practicable to the fixture that it serves, and in no case shall they be more than one foot from said fixture. The waste-pipe from one fixture must not be connected with a trap of another.
(28 amended Mar. 31, 1937, P.L.168, No.44)