West
Building 3 at Water’s Edge
Water’s Edge is a three-building creative-office campus. SGH consulted on the building enclosure and fire life safety design.
San Francisco, CA
530 Bush Street
Scope/Solutions
Located in the city’s financial district, 530 Bush Street was originally a power plant. The owner planned to convert the eighty-year-old building to office space and wanted to address cracks and spalling in the terra-cotta cornice that created a life safety problem, severe corrosion of structural steel components, water intrusion at walls and parapets, rooftop planter leaks contributing to material failure, and lead-based paint on concrete walls above cornice. SGH conducted a condition assessment of the five-story facade and developed a rehabilitation program.
SGH assessed the condition of the steel-framed building with masonry infill and a terra-cotta-clad cornice with roof planter above. SGH developed a repair program that included the following:
- Removal and restoration of severely cracked cornice pieces reinstalled with new supports
- Removal and patching of spalled terra-cotta and concrete columns above the cornice
- Cleaning of corroded steel and treatment with a corrosion inhibitor
- Replacement of the cornice roof and roof above the top-story windows and development of a waterproofing design for new roof garden
- Consultation for lead paint abatement
We also implemented cathodic protection for the structural steel supports in the cornice which made this project the first known application of cathodic protection on a steel-framed, masonry building facade in the United States. The cathodic protection system utilized twenty-three titanium anodes and low voltage direct current to control corrosion of the steel components.
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Project Summary
2000
Completion Date
Solutions
Repair & Rehabilitation | Preservation
Services
Building Enclosures | Structures
Markets
Commercial
Client(s)
Transwestern Commercial Services
Specialized Capabilities
Repair & Strengthening | Condition Assessments | Roofing & Waterproofing
Key team members
Additional Projects
West
The Key at 12th
Constructed in 1911 and listed on the National Register of Historic Places, the building at 1100 Broadway became the headquarters for the Key System transit line in 1943. SGH provided building enclosure engineering services for the project.