For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
BIOLOGICAL OXYGEN DEMAND. The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20°C, expressed in parts per million by weight.
BUILDING OR HOUSE DRAIN. The part of the lowest horizontal piping of a house or building drainage system which receives the discharge from soil, waste or other drainage pipes inside the walls of any building or house.
BUILDING OR HOUSE SEWER. The part of a house or building drainage system extending from the house or building drain to its connection with the main sewer.
GARBAGE. Solid wastes from the preparation of cooking and dispensing of food and produce.
LOCAL VENTILATING PIPE. Any pipe through which foul air is removed from a room or fixture.
pH. The logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
PLUMBING FIXTURES. Receptacles intended to receive and discharge water liquid or water-carried wastes into the sewer system with which they are connected.
PROPERLY SHREDDED. Shredding to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers with no particle larger than one-half inch in diameter.
SANITARY SEWER. A sewer which carries sewage and to which storm, surface and groundwaters are not intentionally admitted.
SEWAGE. A combination of the water-carried wastes from residences, business buildings, institutions and industrial establishments together with such ground, surface and stormwaters as may be present.
SEWER SYSTEM. All facilities for collecting, pumping, treating and disposing of sewage.
SOIL PIPE. Any pipe which conveys the discharge of water closets with or without the discharge from other fixtures to the house or building drain.
STORM SEWER. A sewer which carries storm and surface drainage, but excludes sewage and polluted industrial wastes.
SUSPENDED SOLIDS. Solids that either float on the surface of, or are in immersion in water, sewage or other liquids, and are removable by filtering.
TRAP. A fitting or device so constructed as to prevent the passage of air or gas through a pipe without materially affecting the flow of sewage or waste through it.
TRAP SEAL. The vertical distance between the crown weir and the dip of the trap.
VENT PIPE. Any pipe provided to ventilate a house or building drainage system and to prevent trap siphonage and backpressure.
WASTE PIPE. Any pipe which receives the discharge of any fixture, except water closets, and conveys the same to the house drain, soil pipe or waste stack.
(Prior Code, § 3-202)