USA Buildings
> take 64,000 car journeys off the road – equivalent
to 280,000 metric tonnes of carbon, according to
AECOM project manager Chris Bennett. Seven per
cent of all the power used by the new stations will
be from wind or solar. The lighting systems are also
designed to be 20 per cent more efficient than current
requirements, while escalators will be ‘on demand’,
defaulting to standby when not in use.
Again, the team has opted for tempered air rather
than full air conditioning, and there will be natural
planting around entrances to stations. One of the
The final
ancillary buildings used for rejecting heat from the
subway system already boasts a green roof. An artist’s impression of the Second Avenue Subway
result will be Considerable thought has gone into the incline of
spectacular and
the train tracks to reduce energy consumption and on more pragmatic issues, such as trying to restore the
a real statement
braking. A ‘regenerative braking’ system is also to be train lines that carried 242,000 commuters a day into
deployed. This will allow trains to accept and re-use the city from New Jersey through the former World
about how this power created by braking trains to save energy, reduce Trade Centre.
city got back
wear and tear, and cut down the need for cooling. For two years after the Twin Towers fell, nothing
on its feet
could move in the vicinity, but now it is once again a
Iconic busy intersection site. Eventually the terminal building
– Ross Edwards At Lower Manhattan’s Ground Zero site, AECOM will sit at the heart of the new centre, complete with five
engineers are working on the proposed iconic transport new towers and the 9/11 memorial that will occupy the
hub at the site of the former World Trade Centre – the footprint of the original towers.
$2bn PATH (Port Authority Trans-Hudson) terminal “Ventilation is our biggest challenge,” says
that is intended to be a powerful statement about the AECOM Transportation senior-vice president Ross
recovery of the city from the 9/11 tragedy. Edwards. “The site is tight and a lot of the systems
Santiago Calatrava’s design of the building itself have been squeezed as well as having to be moved to
– reminiscent to many of a dinosaur skeleton, but accommodate the new plans for the memorial park.
intended as a welcoming ‘gate’ to travellers arriving However, the final result will be spectacular and a real
in the financial heart of Manhattan – is all about light statement about how this city got back on its feet after
and air. The glass and steel ‘wings’ of the structure – the attacks.”
modelled on the wings of a dove to symbolise peace That get-up-and-go spirit is everywhere in
– are designed to be opened for natural ventilation this vibrant city, and most people seem to regard
during the heat of the city’s summer and to allow the economic catastrophe engulfing Wall Street as
smoke to escape in the event of a fire. There is also a little more than a blip. The transport projects
plan to ceremonially open the wings each year at the under way are on a mind-boggling scale, but
exact moment of the 9/11 attacks. sustainability is not being forgotten – and that
However, at present AECOM’s team is concentrating must give us all hope. l
PATH terminal Bold memorial for 9/11 site
The design of the PATH transport terminal building commissioning and use, Calatrava, to design the new $2.2bn
aims to have a bright and airy interior, according to the designers. PATH terminal. The team is responsible
and to be a memorial to Ground Zero. Architect Santiago Calatrava says his for the final engineering of site preparation,
The glass and steel wings are designed so primary influences while designing this site stabilisation and PATH facilities,
that they can be opened to provide natural building were the Grand Central and including tracks, platforms and mezzanine.
ventilation during warm weather months; Penn stations. His main goal with the It is also responsible for preliminary plans
they can also be opened in the event of a PATH Terminal, he says, was to create a through to final design for the terminal
fire to allow smoke to escape. The wing landmark, a new focus for the city and a building, pedestrian connections, security,
height is 45.7m, and the terminal will reach grand welcome ‘gate’ for those arriving in and sustainable design.
18m below ground. Manhattan for the first time by train. The The design team says the site will
Sustainable design principles – city’s master plan includes renovation of incorporate appropriate levels of
including energy efficient systems, indoor the transit in that area, including possible protection against various threats, and
environmental quality, lifecycle costs direct links to JFK International Airport, protection measures are likely to include
and impacts, and material resource which would be a first for the area. blast-protective construction, CCTV
and conservation – will be incorporated The Port Authority of New York and New systems, physical intrusion protection,
throughout the facility and considered Jersey selected the AECOM-led Downtown and chemical, biological and radiological
from construction stage services through Design Partnership, in association with security.
34 CIBSE Journal March 2009
www.cibsejournal.com
CIBSEmar09 pp30-32.34 usabuildings.indd 34 4/3/09 14:56:50
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