|
East End Concourse/Penn Station
Cost: $125 million
Development
Team
Owner: Amtrak, NYC
Client: New Jersey Transit,
Newark, N.J.
Construction Manager: O'Brien
Krietzberg, NYC
Design Engineer: Jacobs Civil
Inc., Edison, N.J.
General Contractor: Yonkers
Contracting Co., Yonkers, N.Y.
Mechanical Contractor: F.W.
Sims Inc., West Babylon, N.Y.
Mini-Pile Contractor: Urban
Foundation/Engineering, Elmhurst, N.Y.
Deck Shield Contractor: Gottlieb
Skanska Inc., Valley Stream, N.Y.
Plumbing Contractor: Taggert
Associates Corp., Long Island City, N.Y.
Electrical Contractor: Eldor
Contracting Corp., Holbrook, N.Y.
Stone Tile Contractor: Port
Morris Tile & Marble Corp., Bronx, N.Y.
Ornamental Ironwork Contractor:
Architectural Building Associates Inc., Port Chester, N.Y.
Ornamental Ironwork Contractor:
Airflex Corp., Farmingdale, N.Y.
Miscellaneous Metal Contractor:
FMB Inc., Harrison, N.J.
Ever since New York City's original Pennsylvania Railroad
Station was razed in the early 1960s, what has passed for
Penn Station has been little more than a maze of low-ceilinged
tunnels under Madison Square Garden and the boxy office complex
now owned by Vornado Realty Trust.
Change for the better came last year when New Jersey Transit
opened its new $125 million East End Concourse, a 50,000-sq.-ft.
station within a station full of bright open spaces, Italian
marble walls, granite floors and six well-lit platforms. The
concourse is enriched by Larry Kirkland's etchings on the
walls of New Jersey landscapes, landmarks and poetry by Jersey
poets ranging from Walt Whitman to Amiri Baraka.
It provides access to the station's six southern-most tracks,
which serve New Jersey, and connects with the underground
network of tunnels that have been called "Penn Station"
for a generation now.
Construction took place in three phases. First was the construction
of a temporary deck to provide access to the tracks during
construction. Next was the removal of asbestos from the underside
of Two Penn Plaza. The third phase involved the demolition
and removal of major portions of the original Penn Station
carriageway structure where Amtrak had been housing its offices.
One of the first tasks prime contractor Yorkers Contracting
Co. had to take on was finding out exactly what was in the
ground. The original Penn Station was built in 1906 and 60
years later radically modified by the construction of Madison
Square Garden and Two Penn Plaza. Several of the "as-built
drawings" were incorrect or no longer existed.
"Many of the surrounding buildings' column supports
went directly through the location of the planned escalators
and stairs," said James Strobel, project manager for
Yonkers. "We had to move 10 columns for Two Penn Plaza.
We installed new foundations and columns on either side of
the existing columns, which meant going down 20 to 40 ft.
to the rock using 8-in.-diameter, concrete-filled steel minipiles."
Construction took place 50 ft. underground, so a means of
getting materials in and out had to found. A 9-ft.-wide, 16-ft.-long
hole was made through a street planter by agreement with Vornado,
which allowed workers to bring 900 pieces of steel totaling
300 tons into the construction site.
A 35-ft.-high cherry picker was used to lower each piece
of steel into the hole. Underground rigging, chain hoists
and trolley systems were built to move the steel girders,
some of which weighted up to 4 tons, into place in tight work
quarters.
Urban Foundation/Engineering of Elmhurst, N.Y., the project's
minipile contractor, devised customized drill rigs that were
able to install minipile foundations without taking tracks
out of service. Hundreds of utility lines had to be identified,
tagged and relocated. Some of this work required the shutdown
of service to Amtrak, Madison Square Garden and Two Penn Plaza.
Regular meetings were held to find times, usually at night,
that were least disruptive.
The East End Concourse opened in September and ushered in
a new era for the115,000 Jersey commuters traveling in and
out of Penn Station every weekday.
|