(Added by Ord. No. 171,261, Eff. 8/30/96.)
The voluntary provisions of this division shall apply to existing buildings of the following types:
1. Cast-in-place reinforced concrete or masonry wall buildings with flexible diaphragms designed under building codes in effect prior to January 1, 1995.
2. Tilt-up concrete wall buildings with flexible diaphragms designed under the building codes in effect prior to January 1, 1995, but after January 1, 1976.
All tilt-up concrete wall buildings designed under the Building Code in effect prior to January 1, 1976, are subject to the mandatory provisions of Division 91, Article 1, Chapter IX of the LAMC. All existing reinforced masonry or concrete buildings with flexible diaphragms, including tilt-up concrete wall buildings, designed under the Building Code in effect on or after January 1, 1995, shall be designed in conformance with Division 16, Article 1, Chapter IX of the LAMC. (Amended by Ord. No. 185,587, Eff. 7/16/18.)