Presidio Buildings

San Francisco, California

The Building 210 renovation included the seismic strengthening of the unreinforced brick masonry bearing wall system. The building is a single story over a partial basement, and was strengthened in accordance with the requirements of the Uniform Code for Building Conservation, Appendix Chapter 1, Seismic Strengthening Provisions for Unreinforced Masonry Bearing Wall Buildings. Seismic strengthening of the building consisted of connecting the floor and roof diaphragms to the unreinforced brick masonry bearing walls to resist in-plane and out-of-plane seismic forces, adding sheathing to the attic floor, and adding out-of-plane wall bracing at the first floor brick walls.