Center to include a massive geothermal installation.
for the Transbay Transit
Center, San Francisco's new state-of-the-art,
multi-modal transportation hub designed by Pelli Clarke Pelli Architects recently
began with a groundbreaking ceremony. Scheduled to open in 2017, this landmark
glass-and-steel structure will connect the city and the Bay Area via 11 public
the Transbay Transit Center will be the San Francisco station for California
High Speed Rail and the first new high-speed rail station in the United States.
Conceived as "the Grand Central of the West," the building is
designed in the spirit of the great train stations of the world. The highly
sustainable and accessible building is distinguished by dramatic light-filled
spaces and a 5.4-acre rooftop park.
are very proud of our design for the Transbay
says Cesar Pelli, senior principal of Pelli Clarke Pelli Architects, whose
winning design was selected in an international competition in 2007. "This
will be a beautiful, functional and sustainable building for San Francisco."
It is hoped
that the project, which is being built on the site of the Transbay Terminal at
First and Mission
streets, also will spur development in the surrounding city blocks and anchor a
are very excited about the civic mission of the Transbay project," says
Fred Clarke, senior principal of Pelli Clarke Pelli Architects. "We want
this to be a great transit center – one by which the city is perceived – but it
must also be a great neighbor."
The Transbay Transit Center
is designed to be graceful, luminous, welcoming and safe. An exterior glass
wall with undulating forms like petals of a flower will create a civilized
presence on the street. These undulations also respond to the building's robust
concrete-and-steel structural system, which is engineered for performance in
the event of severe earthquakes.
plaza on Mission Street
marks the primary entrance to the Transit
Center. The main public
space – the Grand Hall – will be suffused with natural light. The central
element, a 120-foot-tall "light column," is a structural component
that reaches from the park to the Lower Concourse. Topped with a
4,000-square-foot domed skylight, the light column not only supports the building,
but draws daylight deep into the interior and frames views of the park above.
place offering both activity and quiet relaxation, the park will be part of the
daily experience of people living and working in the neighborhood. Walking paths,
playgrounds, cafes, a 1,000-person performance venue and 12 gardens, each
representing a different natural environment, will form a full-fledged urban
park. In addition, a 1,000-foot-long fountain will have jets of water triggered
by the movement of buses below. Over time, bridges will be added to connect
adjacent buildings to the park, fully integrating it into San Francisco's urban fabric.
As one of
the country's greenest buildings, the Transbay Transit
Center will use multiple
sustainable design strategies. The most visible is the park, which will absorb
and filter pollutants through its trees, landscape and water management system.
Beneath the Transit
Center, a massive
geothermal heat exchange system will be built into the building's foundation. Running
the length of 4.5 city blocks, it will be one of the largest geothermal
installations in the world. To further reduce energy consumption, the building
will be naturally ventilated and most spaces will be naturally lit. Finally,
the building will manage stormwater and reuse greywater. The water reuse and
conservation system will save 9.2 million gallons per year, the equivalent of
19 Olympic-sized swimming pools. The building is targeted to achieve a Gold
to be a destination for both transit users and the general public, the building
will offer street-level shops, cafes and public promenades. In addition, the
architecture integrates works by significant contemporary artists including
James Carpenter, Julie Chang, Jenny Holzer, and Ned Kahn.
Construction Begins for Transbay Transit Center
August 17, 2010