Whenever possible, the building sewer shall be brought to the building at an elevation below the basement or first floor. No building sewer shall be made parallel to or within three feet of any bearing wall, which might thereby be weakened. The depth shall be sufficient to afford protection from live loads (automobiles, etc.) which may be superimposed. The building sewer shall be made at uniform grade and in straight alignment insofar as possible. The building sewer shall be constructed to such point as directed by the city and/or the Western Carolina Regional Sewer Authority. (Prior code § 4-1-27)