Atop New York, That's Some Big Rope
largest Phillystran tower guy systems ever assembled are now serving the steel spire
atop the New York City skyline.
The manufacturer said it designed, made and supplied eight aramid
fiber High-Performance Tower Guy assemblies, each approximately 100 feet in
length, to support the 400-foot mast atop One World Trade Center, the tallest
building in the Western Hemisphere. That building has been topped off but is
not yet open.
“These custom HPTG assemblies were
designed to hold up in the most extreme weather conditions with a rated break
strength over 1.7 million pounds,” the company said.
Phillystran began working on the job in 2004 with a proposal for custom
non-metallic guy assemblies to support the mast. It won the contract in
September of last year.
“Construction of the eight HPTG guy
assemblies ... began in the fall
of 2012 and was recently completed in August 2013, taking nearly 48 weeks to
complete,” the company stated.
“This project was a
challenge for Phillystran, requiring a specially designed tension monitoring
system, and approximately 6-inch-diameter HPTG guy assemblies weighing in at
nearly 12 pounds per foot, with a breaking strength of over 1.7 million pounds.”
Phillystran said its engineers and consultants monitored the installation of
the assemblies from mid-July into early August.
building is a joint project of The Durst Organization and the Port Authority of
New York and New Jersey. Durst hopes to attract broadcast stations to lease
space for transmitters atop the building. If it succeeds, it plans to install
master TV and FM antennas on the spire.