Sewer laterals and connections to the sewer main shall be at least six inches in diameter. Four-inch sewer laterals shall be constructed with a minimum grade of 1.5 percent or three-sixteenths of an inch per foot. All other sized laterals shall be laid so as to permit a velocity of 2.5 feet per second (0.76 meters per second) at full flow. The alignment of the lateral shall permit a smooth flow of water and shall not include bends, elbows, increasers or other fittings which would retard the flow of the waste water. The grade shall be straight from the building to the riser. Turns into the riser or connection shall be accomplished by the use of long radius elbows. If the connection is made by opening the sewer main the connecting pipe shall be heavily encased in concrete at least to the first joint. All pipe joints shall be watertight using "o-ring" or compression-type jointing systems as approved by the City.
(Ord. 95-20AC. Passed 4-3-95.)