Long Beach Unified School District
Polytechnic & Woodrow Wilson HS Auditoriums

Long Beach, California

Size: 80,000 Square Feet

Construction Cost: Approx. $22M

MHP Services: Seismic Evaluation and Retrofit

Owner: Long Beach Unified School District

Architect: LPA, Inc.

Long Beach Polytechnic and Woodrow Wilson High Schools are the oldest in the district, both constructed prior to the devastating 1933 Long Beach earthquake. The auditorium buildings at both campuses suffered damage in the event, and repair and limited seismic strengthening were completed in the mid-1930s. The current modernization projects for the two auditoriums (1,400-seat and 1,600-seat) include seismic strengthening as the primary goal. Modernization scope includes improved acoustics, sightlines and accessibility through the addition of ramps and elevators. The highly irregular buildings include such features as multiple roof levels, fly lofts, balconies, basements, sloping floors, clock tower, and historic elements. Liquefaction hazards at one site required mitigation through compaction grouting. Previous earthquake repairs and limited strengthening also presented structural challenges. MHP developed material testing programs for both structures, and coordinated DSA 08-03 submittals to seek matching funding for the AB 300 buildings through the Seismic Mitigation Program (SMP) created by Proposition 1D.