1.   Continuing Existing Uses. Any building, structure or use lawfully existing at the time of enactment of the regulations contained in this chapter maybe continued, except certain nonconforming uses as provided in this section. Nothing in this chapter shall prevent the strengthening or restoring to a safe condition any part of any building or structure declared unsafe by the Zoning Administrator.

2.   Exceptions to Continued Use.

   A.   Any nonconforming building or structure which has been or may be damaged by fire, flood, explosion, earthquake, war, riot or act of God may be reconstructed and used as before if it be done within twelve months of such calamity, if damaged less than 50% of its fair market value, as determined by the Board of Adjustment, at the time of such damage. If damaged more than 50% of its fair market value as determined by the Board of Adjustment, such building shall only be reconstructed in accordance with the provisions of this chapter.

   B.   No building, structure, or premises where a nonconforming use has been or may be discontinued for more than one year or has been or may be changed to a use permitted in the district in which it is located shall again be devoted to a nonconforming use.

   C.   Any nonconforming use of land not involving any structure and any nonconforming outdoor advertising sign or outdoor advertising structure may be continued for a period not to exceed three years after enactment of the regulations contained in this chapter, whereupon such nonconforming use shall cease or structure shall be removed.