Friday, February 26, 2016

Reviving History - Los Angeles County Hall of Justice

The 1994 Northridge, California, earthquake caused extensive damage to many buildings in the Los Angeles area, including the historic Hall of Justice.

Built in 1924, the HOJ contained the County courts, Sheriff department, Coroner, District Attorney, and the County jail. The building famously housed Charles Manson while he was waiting trial; and was the site of the Marilyn Monroe and Robert F. Kennedy autopsies.

The $245 million repair and renovation project, begun in August of 2011, brought this Beaux Arts building back to its original beauty.  Clark Construction Company, the design builder, and AC Martin achieved a LEED Gold certification. At the time of its completion in August, 2014, it was the largest project ever delivered by the County Department of Public Works, Architect and Engineering Division.

The renovation called for converting the structure from a mixed use (office, court, and jail) to an office for the Sheriff’s Department and District Attorney and upgrading the structural seismic resistance to comply with current building codes. 

The project includes the structural demolition of the existing 11th and 13th floors, retrofit of structural and non-structural elements to meet current seismic performance requirements, and tenant improvements throughout the building. The project also includes a 10-story parking garage with five levels of subterranean parking.

As part of the historic restoration, each of the 1,600 windows were taken apart so that the lead-base paint could be removed before replacement. This was included in the original construction schedule.

The 14-story structure was constructed with a steel frame encased in concrete, concrete floor slabs, granite exterior veneer and hollow clay tile interior partition walls. While workers were performing seismic upgrades to the structural support members they discovered the steel beams were coated in lead-based paint before encasement in concrete. This led to thousands of hours of additional work and a $6 million change order to the project.

Converse Consultants provided geotechnical and environmental services to the County of Los Angeles, Department of Public Works during the preliminary design Hall of Justice Repair and Reuse project. During construction we conducted additional hazardous materials surveys and prepared remediation plans, and provided materials testing and inspection.

Converse is proud to have worked with the County of Los Angeles Department of Public Works for 60 years.  Future Quick Conversations posts will spotlight some of the amazing projects we've been privileged to be part of.

For more information, please contact Beth George at bgeorge@converseconsultants.com.





 

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