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(Rendering courtesy of LMDC) |
Two years after terrorists
reduced the 12-million-sq-ft World Trade Center to rubble,
officials charged with the sites $10-billion redevelopment
are cautiously celebrating the end of a major bottleneck to
the recovery of Ground Zero and Lower Manhattan by putting
the final touches on a detailed plan for the 16-acre complex.
"Were starting to pick up steam," says John
N. Lieber, director of WTC development for Silverstein Properties
Inc., New York City, the parent company of the entity that,
along with retailer Westfield America Inc., had signed a 99-year
lease on the trade center less than two months before Sept.
11, 2001. "A lot of the complicated political and policy
decisions are coming together," says Lieber, whose job
was created last March by WTC redeveloper Larry Silverstein.
"Its an exciting time to get involved."
There are still open questions
regarding the WTC, but the recent "big hug" between
Silverstein and the states Lower Manhattan Redevelopment
Corp. over control of the architecture for the proposed 1,776-ft-tall
contender for the title of "Worlds Tallest Building"
paved the way for progress. The July announcement that local
high-rise architect David Childs of Skidmore, Owings &
MerrillSilversteins choicewould reign over
the $1-billion Freedom Tower envisioned by LMDCs master
planner Daniel Libeskind catapulted the redevelopment from
a holding pattern into forward motion.
The agreement calls for Libeskind
to collaborate with Childs during conceptual and schematic
design and cleared the way for submission for approval to
LMDCs steering committee of a final grand plan for the
new WTC. That should happen in about a week, says Anthony
G. Cracchiolo, director of priority capital programs for the
Port Authority of New York & New Jersey, which owns the
site and developed the trade center 40 years ago.
With the stalemate over, the port
authority is girding itself for the big push to meet New York
Gov. George E. Patakis construction schedule, laid out
in April. The goal is to break ground by this time next year
for the $1-billion icon tower; a $2-billion transportation
hub, including a permanent PATH subway terminal; and site
infrastructure. Those elements are scheduled to be done by
year-end 2008.
"Its a very ambitious
schedule and we believe it is achievable," says Cracchiolo.
In other recent developments relating
to 9/11, the U.S. Environmental Protection Agencys inspector
general released a scathing report, claiming EPA lied to residents
of Lower Manhattan about air quality after the attacks.
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| (Photo
courtesy of FEMA) |
In better news from Washington,
the U.S. Dept. of Housing and Urban Development last month
announced $156 million in federal funds, to be managed by
LMDC, to improve public parks, streets and open space in Lower
Manhattan. In July, HUD announced a $50-million package to
help produce more than 300 affordable housing units. The funds
are part of a total of $3.4 billion HUD is investing in the
areas recovery.
The $16-million, federally funded
WTC investigation into the performance of the buildings on
9/11, carried out by the National Institute of Standards and
Technology, Gaithersburg, Md., is about to enter the eyewitness
and survivor interview phase. NIST says a third interim report
will be issued in December and a final report next August.
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| Interim
Path Subway Terminal will open in Ground Zero in November.
(Photo by Michael Goodman for ENR) |
As part of its research and development,
concurrent with the WTC investigation, NIST and the Society
of Fire Protection Engineers are holding a workshop for some
60 experts on Oct. 2-3 in Baltimore to identify the research
and development gaps to be filled in considering fire as a
structural design load. The workshop is preceded by a Sept.
30-Oct. 1 conference on the same subject, sponsored by SFPE
and the Structural Engineering Institute of the American Society
of Civil Engineers. Model code writers also are considering
code changes proposed as a result of 9/11.
In New York City, the port authority
reports the WTC name will not change. But resemblance to the
original ends there. A silver lining to the cloud of 9/11
is that the rebuild is considered an improvement over the
original, especially as it relates to the rest of Lower Manhattan.
In addition to 10.1 million sq ft of office space, the Libeskind
plan calls for a 4.7-acre memorial garden, sunken 30 ft, with
the preserved footprints of the twin 110-story towers and
an exposed section of the foundation wall; a grand "piazza"
named the Wedge of Light at the intersection of the restored
Fulton and Greenwich streets; nearly 1 million sq ft of retail
space and 280,000 to 380,000 sq ft of cultural space (ENR
3/10 p. 12). The LMDC steering committee will receive a final
plan for approval that includes specifics on street widths,
alignments, the complexs security plan and generally,
"how to make it all workable," says Cracchiolo.
Developing concurrence on the plan
was a near-miracle, considering the number of "stakeholders"
and their many, often- competing interests. There also was
the high level of emotion surrounding Ground Zero, where nearly
3,000 people died. In the final plan, the port authority is
asking for 8.4 million sq ft of commercial space on site in
four buildings ranging in height from 50 to 70 stories. The
fifth, 1.7-million-sq-ft office building would be located
off site across Liberty Street (Click
here to view map), on the plot now occupied by the vacant
Deutsche Bank building, damaged when the 110-story Two World
Trade Center collapsed, and an adjacent parking lot.
The advantage of adding the Deutsche
bank site is that space would be available there for delivery
truck and other security check-in zones, says Cracchiolo.
That would relieve overcrowding below grade within the site
proper, caused by basement real estate lost to the sunken
garden. Offsite security zones would also eliminate the need
to harden the memorial and PATH stations. Purchase of the
lots is still uncertain due to an insurance-related lawsuit.
Once it is resolved, they could be acquired by purchase or
condemnation, says Cracchiolo.
A question remains as to whether
there will be any tenant parking within Ground Zero. Also,
the location of the bus terminal for visitors to the trade
center memorial has not been set. The port authority reports,
however, that it is "definitely not on site."
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| Seven
WTC, with substation is first up. (Rendering left courtesy
of Skidmore, Owings and Merrill LLP ; Photo by Michael
Goodman for ENR) |
Mums the word on the Libeskind-Childs
collaboration, other than that work is under way toward a
2.5-million-sq-ft tower "consistent with the master plan."
That means some 70 occupied floors and a steel antenna tower
that reaches 1,776 ft, with a public observation deck part
way up the tower. The port authority says the tower will remain
in the northwest corner of the complex, as proposed by Libeskind,
rather than over the $2-billion transportation hub, as suggested
by Silverstein. The developer has not formally selected design
consultants besides SOM, though Silverstein is continuing
to work with the team that provided preconstruction services
for Seven WTC, already under reconstruction.
Groundbreaking for the icon tower
is set for late next year and steel is scheduled to be topped
out in September 2006. The building should come on line in
mid-2008. For the remaining office towers, Silversteins
"expectation" is to begin one each year after 2004
and to complete one each year after 2008, ending in 2012.
Conceptual design for the transportation
hub is complete and the port authority has just signed the
contract with its local consultant, Downtown Design Partnership.
The port authority expects to have in place, by next month,
a $1.7-billion grant from the Federal Transit Agency. Financing
will be completed by $300 million in insurance funds.
The FTA grant would allow preliminary
engineering to begin as well as let the port authority proceed
with environmental approvals. To speed the process, the port
authority split transit-related and commercial development
approvals so that they can proceed concurrently. "We
need to get records of decision no later than next August
for the transit hub and next April for the Freedom Tower,"
says Cracchiolo.
There are other signs of life at
Ground Zero. Steel erection is set to begin next month on
Seven WTCthe first commercial building to rise from
the ashes. Construction of the concrete-framed electrical
utility substation in the buildings base is 80% complete.
Work is on schedule to turn the substation over to the utility
in the first quarter of 2004, say sources. Unlike the original
configuration, the office tower, with a steel frame and concrete
core, does not bridge the substation but rather grows from
it structurally.
Transit improvements are moving
ahead. The temporary WTC PATH subway terminal is on course
to reopen in November, which will simplify the commute from
New Jersey. A couple of blocks from Ground Zero, the city
is moving ahead on a $750-million Fulton Street Transit Center.
To expedite construction, on July 30, the Metropolitan Transit
Authority formed the Capital Construction Co. Last month,
MTA awarded a design contract to the local office of ARUP.
Construction contracts are to be let next year and the hub
completed by the end of 2007.
The center will connect seven subway
lines and PATH. The port authority is building a moving walkway
in an underground passageway connecting the two transit hubs
to the World Financial Center. That should shorten the walk
end to end by 10 minutes, says Cracchiolo.
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| Finalists
in the Ground Zero memorial competition will be announced
this fall. (Rendering courtesy of LMDC) |
For the WTC memorial competition,
LMDC says it is slogging through 5,200 entries from 62 nations
and will announce five or so finalists this fall.
Legal actions related to 9/11 are
still pending. Silverstein is trying to convince the court
to overturn two previous rulings, both related to whether
the plane attacks on the twin 110-story towers constitute
one or two occurrences for purposes of the $3.55-billion-per-occurrence
insurance program. "Whatever the outcome, we expect a
trial on any remaining issues," says Marc Wolinsky, Silversteins
lawyer.
There is a motion to dismiss personal
injury lawsuits against the port authority, Silverstein, the
trade centers original designers and others. The decision
will not affect the rebuild because Congress passed a statute
limiting defendants liability to the amount of liability
insurance, says Wolinsky.
Another suit attempts to make the
port authority legally bound to follow New York Citys
building code. The agency says it complies voluntarily.
With one exception, progress on
recovery of surrounding buildings damaged on 9/11 is good.
The first 1,000 of 1,700 workers will move back into the Verizon
building beginning Nov. 1, after a $1.4-billion rebuild. The
1-million-sq-ft U.S. Postal Service building is on course
to reopen next spring. Fiterman Hall of the Borough of Manhattan
Community College is the only building not under repair or
in court with insurers.
Though WTC sources say they are
weary from two years of trying to "reach concurrence,"
they are eager to see the fruits of their labors in coming
years. "Nothing could be more important or more rewarding"
than reconstruction, says Silversteins Lieber.
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AGENCIES
Port Authority Doesnt
Skip a Beat After Trauma of 9/11
As program
manager, the Port Authority of New York & New Jersey
has the often-frustrating role of coordinating all aspects
of the WTCs $10-billion reconstruction. But the
job is almost therapeutica positive way to deal
with the trauma of the experience. The port authority,
which occupied 28 floors in the 110-story north tower,
lost 84 people on 9/11.
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| DeMartini
led 50 people to exit. |
The heroism of two of those
who perishedFrank De Martini and Pablo Ortizhas
been inspiring (ENR 10/1/01 p. 14). Their story was
further documented on Aug. 29 in The New York Times.
The article was based on interviews with survivors and
transcripts of audio tapes from 9/11, released Aug.
28 under court order by the port authority.
De Martini and Ortiz are
credited with helping to save more than 50 people. First,
De Martini led his staff on the 88th floor, which had
sustained major damage when the terrorist planes hit
above, to a corner office. Taping the door shut to keep
smoke out, he went back into the chaos in search of
a way out. He soon returned and led the 25 to 40 people
to a clear stairwell.
De Martini, Ortiz and Mak
Hanna, a survivor, then went to the 89th floor and led
a group of 23 from MetLife to the stairwell. The building
collapsed soon thereafter.
"Despite the overwhelming
grief felt by the staff, they literally dusted themselves
off that day and went right back to work," says
Frank Lombardi, the port authoritys chief engineer.
"For these reasons, our agency continues to move
forward."
In 2002, the authority awarded
$1.1 billion in construction contracts and put $1 billion
of work in place. This year, it expects to award $700
million and put $1.1 billion in place.
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BUILDING CODES
Proposals for Change Focus
on Extreme Conditions
The dearth
of protocols for emergency evacuation of commercial
buildings under extreme circumstances has prompted a
rethinking of egress and evacuation strategies by codes
and standards writers. In addition, the catastrophic
fires triggered by the fuel of the hijacked planes that
slammed into the 110-story twin towers of the World
Trade Center, and the resulting untended fire in Seven
WTC that led to its collapse, are fueling research and
development on the performance of tall buildings under
extreme fire loads.
Proposals for change to the
2006 editions of the two sets of model codesthe
life safety code and building code published by the
National Fire Protection Association, Quincy, Mass.,
and the International Building Code published by the
International Code Council, Falls Church, Va.focus
on life safety issues, but also include structural topics.
On the table is widening
stairwells in tall buildings to a minimum 6 ft from
the current 44 in., and the use of elevators for egress
during emergencies. Proposals have also been received
for concrete or masonry stair enclosures in buildings
over 250 ft. People are also calling for visual and
tactile floor egress path markings and floor-level exit
signs. And there are proposals to require all corridors,
even those with sprinklers, to be fire-resistance rated.
Also under the microscope
is the acceptability of hourly fire-resistance ratings
of structural components and the adhesion of fireproofing.
The adequacy of vibration and impact tests for spray-applied
fireproofing is also being questioned.
Many of these issues are
being hotly debated, say sources, but there seems to
be broad acceptance that fire should be considered a
structural design load. There is less agreement on whether
the codes should address progressive collapse and blast-resistant
construction. On the philosophical side, the topic of
whether codes should address extraordinary events or
issue disclaimers saying they dont is under debate.
Sources say answers to many
code questions may not come until next summer, when
the National Institute of Standards and Technology issues
a final report on its $16-million WTC investigation.
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CONTAMINATION
Assurances on Air Quality
Draw Fire
The U.S. Environmental
Protection Agencys pronouncement one week after
9/11 that the air in Lower Manhattan was safe to breathe
was made without sufficient data and analyses. Sen.
Hilary Rodham Clinton (D-N.Y.) quickly seized upon that
conclusion, from an EPA inspector generals report
released Aug. 21, to suggest a White House cover-up.
Former EPA Administrator
Christine Todd Whitman acknowledges that the White House
did edit EPA releases about air quality to reassure
the public. "But nothing was ever changed in a
way to jeopardize the health of the people," she
says.
When EPA said on Sept. 18,
2001, that the air around Ground Zero was safe, the
agency lacked air monitoring data for particulate matter
and polychlorinated biphenyls, the IG report notes.
Studies during the two years since the attacks reveal
a mix of hazardous airborne contaminants in the plume.
The cloud included elevated levels of asbestos, lead,
glass fibers and concrete.
Many residents are concerned
that the pollution settled into structures within the
area, posing a lasting public health risk. The IG report
says answers wont come soon: "A definitive
answer to whether the air was safe to breathe may not
be settled for years to come."
The report recommends EPA
coordinate disaster-related protocols for indoor air
quality with the Dept. of Homeland Security and other
agencies. Rep. Jerrold Nadler (D-N.Y.) wants a more
comprehensive cleanup.
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