The grading and alignment of streets shall comply with all specifications of the City Engineer in addition to the following general requirements.
(a) Grades of streets shall not exceed ten percent for local streets, seven percent for secondary thoroughfares, and six percent for major thoroughfares. Minimum street grades shall be five tenths of one percent in order to provide adequate surface drainage.
(b) All changes in grade shall be connected by vertical curves of sufficient length to provide an orderly transition and clear visibility for vehicular operations in accordance with standards established by the American Association of State Highway Officials or the City.
(c) Streets shall level off to a grade not exceeding three percent for a minimum distance of 100 feet from each side of an intersection to assure starting and stopping when slippery road conditions exist.
(d) Angles in the alignment of street lines shall be connected by a curve with a minimum radius on the centerline of 300 feet for local and secondary streets and 520 feet for major thoroughfares. Between reverse curves on all streets there shall always be a tangent of at least 100 feet in length.
(Ord. 14-23. Passed 12-11-23.)