This project was a seismic upgrade of a concrete museum building. The project involved drilling 26 piers 3½ ft. by 70 ft. deep in groupings […]
This project was a seismic upgrade of a concrete museum building. The project involved drilling 26 piers 3½ ft. by 70 ft. deep in groupings positioned below each spiraling wing of the gallery. Heavy steel pipes, which connect to the building exterior through a system of yokes, collectors and straps, were installed to transfer the building loads to the piers. The museum remained partially open during construction work. This project had an unusual green building component used infrequently in construction.
In order to expose the rebar on the exterior of the concrete building, BBI used a mining technique to remove the cement at selected locations around the perimeter. The cement was washed away using a 20,000 psi water blast to expose the aggregate. All rebound – the water plus cement – was then collected into a catchment or settlement pond. When the sediment settled, the water was returned to EBMUD sewer systems.