Wood fences shall have posts not less than three inches by three inches, spaced not over ten feet on centers, and imbedded at least 18 inches into the ground. Posts, other than redwood, shall be treated with a preservative. Fencing shall be at least one-half inch in thickness and fastened securely to at least two rails not less than two inches by three inches cross-section.
('83 Code, § 15.40.070) Penalty, see § 10.99