Restoration. A nonconforming building which has been damaged or destroyed
by fire, explosion, casualty or act of God or a nonconforming building
which has been legally condemned may be reconstructed and used for
the same nonconforming use, provided that the reconstructed building
shall not exceed in height, area and volume the building destroyed
or condemned, and the building reconstruction shall be commenced within
one year from the date the building was destroyed or condemned and
shall be carried on without interruption.