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2019 NTMA Job of the Year
Salesforce Transit Center
San Francisco, CA

Terrazzo Contractor
Associated Terrazzo Company • San Francisco, CA

Over ten years in the making, this terminal’s Grand Hall houses an exceptionally intricate public art installation in terrazzo. Sixteen colors and 375 waterjet-cut elements of brass and zinc form the “Secret Garden” design with its joyful collection of hummingbirds, poppies, brass insects, and abstract shapes. The design beautifully complements the scale and architectural elements of the space.  The terrazzo was installed on a concrete topping slab that contains a radiant flooring system over several inches of rigid foam insulation.  The design and installation of the floor also had to take into account a second phase of construction, in which large structural slabs will be removed for the installation of escalators to provide access to projected commuter and high-speed rail. Besides the Grand Hall installation, another 6,000 square-feet of single-color epoxy terrazzo flooring was installed in five different areas of the building at the same time, including five staircases of precast terrazzo and 11 elevator cab floors. When installers were asked to expedite the six-month installation schedule, they trimmed a month off and increased the quality of the bent divider strip patterns by pre-fabricating the divider strips on panels, many as large as 11x17 feet, aligned on the construction site.

Architect
Pelli Clarke Pelli Architects
New Haven, CT

Artist
Julie Chang
San Francisco, CA

Terrazzo Contractor
Associated Terrazzo Company
San Francisco, CA

General Contractor
Webcor/Obayashi, Joint Venture
San Francisco, CA

Owner 
Transbay Joint Powers Authority
San Francisco, CA

Resin Supplier
Terrazzo & Marble-
Supply Companies

Aggregate Supplier
Terrazzo & Marble-
Supply Companies

Precast Supplier
Tectura Designs,
a Wausau Tile Inc. Brand

Divider Strip Supplier
Manhattan American-
Terrazzo Strip Company

Photographer
Albert Benichou