Every auto trailer camp shall be surrounded on all sides, except those sides directly abutting on a public street, with a fence not less than six feet high constructed and maintained in order to effectively prevent the passage of persons. There shall be no opening or gate in such fence except with the written approval of the owner of the immediately adjoining land, which approval shall be filed with the Health Department.
('71 Code, § 1181.15) Penalty, see § 101.99