On those sides of property in the M-1 Zone which adjoin an agricultural or residential zone, school or park, a solid masonry wall not less than six feet in height nor less than eight inches in thickness shall be built and maintained along the property lines adjoining said agricultural or residential zones, school or park; except, that said wall shall be three and one-half feet in height where it adjoins the front yard setback area. Said wall need not be installed until the property is developed for M-1 uses. The required wall may be replaced by suitable landscaping of a screening nature, approved by the Director of Planning and Development and continuously maintained in good condition in accordance with the provisions of §§ 155.545 through 155.559 of this chapter.
('64 Code, § 46.17) (Am. Ord. 358, passed 7-10-69; Am. Ord. 501, passed 6-24-75) Penalty, see § 10.97