One set of approved plans, specifications, and computations shall be retained by the building official for a period of not less than 90 days from date of completion of the work covered therein, and one set of approved plans shall be returned to the applicant, and the set shall be kept on the site of the building or work at all times during which the work authorized thereby is in progress.
(Sec. 18-5.2, R.O. 1978 (1983 Ed.)) (1990 Code, Ch. 18, Art. 5, § 18-5.2) (Am. Ord. 93-59)