McMenamins Crystal Ballroom
Portland, Oregon
Seismic Evaluation and Rehabilitation Erickson Structural personnel were retained to seismically rehabilitate this historic unreinforced masonry building without impacting the original architectural design. This challenge was met by using a unique design technique called “center coring.” Erickson Structural carefully identified sites around the perimeter of the building to core through the center of the walls. After drilling and extracting rubble from each core, rebar was installed and encased in epoxy with fine-tuned viscosity to fill the cores and migrate through the adjacent voids for maximum reinforcement. The resulting building shows no sign of seismic upgrade, and meets the seismic demands required for local building codes, and had added benefit of allowing ongoing use of the dance hall throughout construction.
Portland, Oregon
Seismic Evaluation and Rehabilitation Erickson Structural personnel were retained to seismically rehabilitate this historic unreinforced masonry building without impacting the original architectural design. This challenge was met by using a unique design technique called “center coring.” Erickson Structural carefully identified sites around the perimeter of the building to core through the center of the walls. After drilling and extracting rubble from each core, rebar was installed and encased in epoxy with fine-tuned viscosity to fill the cores and migrate through the adjacent voids for maximum reinforcement. The resulting building shows no sign of seismic upgrade, and meets the seismic demands required for local building codes, and had added benefit of allowing ongoing use of the dance hall throughout construction.
