| Building Type: |
Institutional |
| Original Structure Type: |
Concrete |
| Retrofit System Type: |
Concrete |
| Year of Retrofit: |
2002 |
| Uploaded by: |
Private |
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Barker Hall
The original structural system for Barker Hall was a concrete frame with
exterior precast concrete shear wall panels. During the 1989 Loma
Prieta Earthquake these wall panels suffered moderate damage and after
engineering analysis, the panels were found to be brittle and irregular
with inadequate connection to the structural frame. To improve the
seismic performance of the building, the design engineers decided to
create a new seismic force resisting system instead of improving the old
brittle wall panels. As a result, eight new concrete shear walls were
constructed around the building perimeter supported by a new continuous
post-tensioned concrete perimeter foundation. A unique feature of the
retrofit was the use of fly ash (a by-product of coal burning that
increases the durability of the concrete) in all concrete retrofit elements.
This University of California Berkeley building was retrofitted as a part of the SAFER Program (Seismic Action for Facilities Enhancement & Renewal) which systematically reviewed, prioritized, and constructed building retrofits for all UC Berkeley owned and operated buildings.
Retrofit Engineer: Forell/Elsesser Engineers
Retrofit Architect: Anshen and Anshen
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