Hercules Public Library
San Francisco, California

The Hercules Public Library stores close to 800,000 books and periodicals within its 21,500 sq. ft. steel frame. The asymmetrical structure features a butterfly roof and an elliptical courtyard. The design is dynamic and inviting, creating somewhat of a community center with an independent Children’s Story Telling Room in a tilted conical tower.

The library’s façade consists of naturally weathering steel panels, allowing the building to transform over time and become more a part of the community it supports. The structural solution for this innovative design consists of a lateral system of concentric braced frames in both orthogonal directions.