Seismic Retrofitting of Historic Masonry

Since so many historic buildings in California failed to realize the architectural implications of earthquakes, many of our projects involve seismic retrofitting. This often requires careful selective removal of original masonry in order to allow for strengthening of the building's framework. Steel connections are introduced for structural stability. The following projects illustrate the demanding procedures involved in seismic upgrades, and the care needed to disassemble a masonry building and put it back together after retrofitting is complete.


Related Projects

Cast Stone Restoration for Wilshire Temple Rose Window

Cast Stone Restoration for Wilshire Temple Rose Window

Los Angeles, Los Angeles County,
California, USA

The Wilshire Temple, constructed in 1929, houses the oldest Jewish Congregation in Los Angeles. As part of a larger restoration of the structure, the Rose Window on the South elevation facing Wilshire Boulevard was deemed to be in need of seismic upgrade as part of the general restoration. Selective removal...

Interior Marble Restoration for Oakland City Hall

Interior Marble Restoration for Oakland City Hall

Oakland, Alameda County,
California, USA

The adaptive reuse of Oakland City Hall involved the complete restoration of both interior and exterior surfaces, as well as the installation of a milestone base-isolation system to ensure the long-term survival of this civic landmark.  A full seismic retrofit, including the base isolation, was the primary goal of this...

Earthquake Retrofitting for Vibiana Cathedral

Earthquake Retrofitting for Vibiana Cathedral

Los Angeles, Los Angeles County,
California, USA

After the Diocese of Los Angeles gave up posession of this early house of worship in Southern California, it was converted into a performing arts and events center. Quake damage had done a bit of damage to the limestone and brick veneer. Intervention for this earthquake retrofit project involved the removal,...

Limestone Preservation for Kerckhoff Hall

Limestone Preservation for Kerckhoff Hall

Los Angeles, Los Angeles County,
California, USA

Kerckhoff Hall is a central component of the historic core of the UCLA campus. Earthquake damage from the Northridge Quake had caused the dislocation of the gothic tower spires. The limestone restoration was coupled with a general upgrade of the building which included base isolation, even as the building was occupied....

Decorative Plaster and Painted Canvas Restoration for San Bernadino County Courthouse

Decorative Plaster and Painted Canvas Restoration for San Bernadino County Courthouse

San Bernardino, San Bernardino County,
California, USA

The courthouse had accumulated damage during previous quake activity over the years, and it became necessary to implement the seismic upgrade and restoration of the interior and exterior surfaces while the building was still in use and courts were in session. While the decorative plaster and painted canvas ceiling restorations were the...

Seismic Upgrade for Federal Office Building Veneer

Seismic Upgrade for Federal Office Building Veneer

Los Angeles, Los Angeles County,
California, USA

The seismic upgrade of a contemporary office building in downtown Los Angeles called on our' technical expertise in selective masonry removal to be utilized in the salvage and later reinstallation of over 1,200 panels of 1 1/4" thick Danby marble, with losses of original marble panels limited to under 2%...

Structural Reinforcing for Barstow Train Station

Structural Reinforcing for Barstow Train Station

Barstow, San Bernadino County
California, USA

The Santa Fe Depot in Barstow was a major stop on the transcontinental railway and housed a Harvey House restaurant. Brick and cast stone removal, restoration, and reassembly was necessary, as these veneer elements suffered a major blow during previous seismic activity. Two towers had collapsed completely in a pile...