SGH performed a window and facade investigation and determined the brick was not adequately anchored at the corners of the building. We designed an anchorage system for the brick that could be installed from the exterior through the mortar joints, causing minimal disruption to the interior finishes and exterior historic fabric.
We also analyzed the exterior wall stability in various seismic events and evaluated the performance of the exterior walls, if strengthened or if left unrepaired, under different levels of earthquake. With information from our study, the owner was able to decide if they wanted to invest in strengthening the exterior walls.
SGH presented our solutions to the Foundation for San Francisco’s Architectural Heritage. We developed a restoration program that included stabilization repairs, as well as repointing, patching, pinning and cleaning of the exterior brick and cast stone facades. We prepared construction documents, and provided construction administration services for the restoration work.