Photo by reinaroundtheglobe / Alamy Stock Photo

Wilshire Grand Center

Los Angeles, CA

Market: Mixed-Use




IDEAS2 Award, Greater than $200 million, American Institute of Steel Construction
2019 Best Tall Building Structural Engineering Award of Excellence, Council on Tall Buildings and Urban Habitat
2018 Building Team Award, Building Design + Construction
2018 Best Project, Residential/Hospitality, ENR California
2017 Specialty Construction Award of Merit, ENR California
Wilshire Grand Center
Wilshire Grand Center

Photo by Robert Landau / Alamy Stock Photo

At 1,100 ft in height, Wilshire Grand Center is one of the tallest buildings west of the Mississippi River. The tower houses below-grade parking, ground-level retail, eighteen floors of leasable office space, and 890 rooms for the InterContinental Hotel. SGH provided fire and life safety code consulting services for the project.

Scope | Solutions

SGH provided structural fire engineering services, including an assessment of the fire performance of the lateral-load-resisting system in the building core on Levels 31 to 52. By applying performance-based design approaches, including an analysis of the connections’ thermal response, we were able to demonstrate the connections could achieve the required rating with a portion of the spray-applied fire resistive material removed. We documented our findings and coordinated with the city to gain their approval of the variance, allowing the project to achieve the desired aesthetics.

Additionally, SGH acted as the deputy inspectors for the city to facilitate commissioning of the smoke control system. Highlights of our work include the following:

  • Reviewed the architectural, MEP, sprinkler, and fire alarm shop drawings for general compliance with the rational analysis of the smoke control report and to highlight potential coordination issues related to the interface between these disciplines and the smoke control system

  • Developed a smoke control systems testing program and witnessed testing, including functional testing of alarm-initiating devices and smoke control system components, pressure differential testing across smoke barriers and at pressurized stairwells, and door leakage testing

  • Prepared a smoke control systems acceptance report documenting the results of the testing in accordance with LABC Section 909 and approved design documents

We also provided code consulting services during construction to address unique construction issues associated with the tower’s fire/life safety systems.

Project Contact(s)