Normal maintenance and incidental repair may be performed on any nonconforming structure, as long as the maintenance or repair will not, in any way, create any new nonconformity, increase the degree of any nonconformity, or increase the bulk of the structure. No structural alterations may be performed on any nonconforming structure, unless:the alteration is required by law; the alteration is necessary to restore the structure to a safe condition on order of any official charged with protecting the public safety; the alteration will result in eliminating the nonconformity; or the alteration will not, in any way, create any new nonconformity, increase the degree of any nonconformity, or increase the bulk of the structure. Ord. 16-581