555 Mission Street takes the road less traveled to achieving LEED certification.
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| All major material specifications were
re-evaluated in order to meet LEED requirements at 555 Mission Street. Photo courtesy of
Turner Construction Company. |
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The Project
In May 2007 — seven months after the general contractor, Turner Construction,
broke ground on 555 Mission Street — developer Tishman Speyer decided to go
back to the drawing board. The company decided to modify its plans and
incorporate a multitude of green techniques and standards focused on enhancing
energy efficiency and minimizing the project’s overall impact on the
environment. As a result of the modifications, the project became eligible to
seek LEED certification.
Once the commitment to go green had been made, Turner and the consultant team
met to re-evaluate and revise all major material specifications to meet LEED
requirements. The 555 Mission Street building is San Francisco’s first LEED
Silver-certified speculative high-rise development.
Turner, a long-time proponent of green building, has extensive experience with
LEED projects (the company has even created a detailed databank of cost-effective
green materials, processes and suppliers). Based on its green building
experience (71 LEED certified projects and many more underway), Turner reports
that costs associated with green projects can be contained to a level
comparable to traditionally constructed buildings.
With the green building plan changes to the 555 Mission Street building, costs were
barely altered. Dave Steffens, Turner’s project executive, says, “Adding green
elements to the building did not affect the construction schedule and amounted
to less than a 1 percent increase to the project’s value. The project remained
within budget, even with the addition of significant green elements to the
plans.”
Green Elements
With the decision to go green, all major material specifications were
re-evaluated in order to meet LEED requirements. Green elements included a
recycled water distribution system that was put in place for landscape
irrigation and will be implemented once the city of San Francisco implements
its recycled water program.
To enhance energy efficiency and to reduce heat load on the building, the roof
includes a reflective cap sheet. In addition, the landscaping is
water-efficient and there are low-flow toilet fixtures and
fittings.
To reduce the project’s overall impact on the environment, more than 25 percent
of products specified in the project are from recycled content including items
ranging from structural steel, wood and concrete, to nails and studs used for
framing, plus ceramic tile, wood paneling and most finishes.
Additionally, the environmental impact was reduced by diverting 80 percent of
waste that was generated during the building process to recycling and take-back
centers. Unused concrete was returned to the concrete plant to be used as
aggregate. Wood that was returned will be chipped and used as ground cover.
Steel and metal were sent to recycling centers.
Building Features
The 670,000-square-foot office tower has approximately 550,000 rentable square
feet, including 3,400 square feet of ground-floor retail space, and two levels
of underground parking.
Visitors to the building are greeted by an attractive public plaza that flows
seamlessly into the lobby area. Together, the plaza and lobby will create an
organic connection between outside social space and the interior environment. A
25-foot-high by 140-feet-long cable-net-supported wall encloses the lobby. An
11,000-square-foot street level plaza features a Jonathan Borofsky sculpture.
The building is designed through a collaboration between the architectural
firms of Kohn Pederson Fox and Heller Manus Architects.