On any building devoted in whole or in part to any nonconforming use, work may be done on ordinary repairs and fixtures, wiring, plumbing or repair or replacement of nonbearing walls, to an extent not exceeding ten percent of the replacement value of the building in any one year; provided, that such work does not increase the cubic content of the building, except as provided in Section 22.36.030(A). Nothing in this title shall be deemed to prevent the strengthening or restoring to safe conditions of any building or part thereof declared to be unsafe by any official charged with protecting the public safety, upon order of such official. (Ord. 817 § 2, 1996).