780 CMR, ch. 34, pt. 1, 307, [BS] 503.8
Current through Register 1538, January 3, 2025
Where the work area exceeds 50 percent of the building area, the building is assigned to Seismic Design B, C, D, E, or F, the alteration work shall include installation of wall anchors for exterior unreinforced masonry walls to resist out-of-plane seismic forces specified in Section A113.1.3 of this code at the floor and roof lines, unless an evaluation demonstrates compliance of existing wall anchorage.
780 CMR, ch. 34, pt. 1, 307, [BS] 503.8