Livermore, CA
4771 Arroyo Vista Avenue
Scope/Solutions
The one-story commercial building at 4771 Arroyo Vista Avenue is a concrete tilt-up structure with a panelized wood-framed roof built in the late 1980s. Prior to purchasing the property, Black Mountain Properties commissioned another consultant to perform a due diligence survey that identified seismic vulnerabilities and recommended partially upgrading the roof-to-wall connections. Black Mountain Properties engaged SGH to design a voluntary retrofit.
SGH designed a retrofit to upgrade the roof-to-wall anchorage and improve the building’s seismic performance, allowing the new owner to avoid earthquake insurance. Highlights of our work include:
- Providing the owner with retrofit options for varying levels of seismic performance
- Recognizing that the concrete strength of the tilt-up walls, which was not available, could significantly influence the retrofit design
- Reducing the required scope of work by incorporating existing wall anchorage components into the anchorage design and executing a concrete testing program per ASCE 41 to determine the actual concrete strength
- Developing alternate strengthening for the roof-to-wall connections to avoid disrupting a tenant’s continuous food processing operations.
Designing a complete wall anchorage system to comply with ACSE 41 and costing less than the other consultant’s original estimate for a partial retrofit
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Project Summary
2022
Completion Date
390K
Construction Value
71K
Project Size
Solutions
New Construction
Services
Structures | Applied Science & Research
Markets
Commercial
Client(s)
Black Mountain Properties
Specialized Capabilities
Seismic Engineering | Repair & Strengthening | Physical Testing
Key team members
Additional Projects
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The Grand LA includes retail and restaurant space, a forty-five-story residential tower with 500 units, a twenty-story hotel with 309 rooms plus event space, and outdoor gathering areas. SGH is providing fire life safety and accessibility consulting services for the project.