A "legal fence" is defined for the purposes of this chapter as a fence with not less than four (4) horizontal barriers, consisting of wires, boards, poles or other fence material in common use in the neighborhood, with posts set not more than twenty feet (20') apart. The lower barrier shall not be more than twelve inches (12") from the ground and the space between any two (2) barriers shall not be more than twelve inches (12"), and the height of the top barrier must be at least forty eight inches (48") above the ground. Every post shall be so set as to withstand a horizontal strain of two hundred fifty (250) pounds at a point four feet (4') from the ground, and each barrier shall be capable of withstanding a horizontal strain of two hundred fifty (250) pounds at any point midway between the posts. (Ord. 247, 9-8-1969)