Glendale High School Administration Building

Glendale, CA

Client

gkkworks

Completion

2011
Glendale High School Administration Building
Glendale High School Administration Building
Glendale High School Administration Building

Constructed in 1969, this two-story building houses administrative offices and the school library. As part of a campus modernization project, Glendale High School wanted to mitigate the seismic deficiencies resulting from a soft-story irregularity. SGH evaluated the existing concrete structure and developed a seismic retrofit program.

 

Scope | Solutions

 

SGH performed nonlinear static pushover analysis following ASCE 41 guidelines. We established performance objectives to provide Life Safety in a 500-year earthquake and Collapse Prevention in a 2500-year earthquake.  Highlights of our retrofit design include the following:

  • Reduced the high drift demand of the soft-story structure by adding eight diagonal braces

  • Used friction dampers in the braces to limit the force transferred into the existing structure and reduce the demands on brace connections to the existing structure

  • Improved the building’s tolerance to drift by jacketing concrete columns with steel shells, increasing the ductility

 

Our approach necessitated a more intensive structural analysis, but allowed us to develop a more cost-effective and constructible solution than could be achieved with code-based procedures and elastic analyses. SGH performed the analysis, design, and production of construction documents for the alternative solution on a expedited schedule to meet the scheduled design completion date.

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