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Old 04-25-2018, 05:33 PM
dale54 dale54 is offline
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Join Date: Jun 2011
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Default panels nyc

hello..To make prismatic glass, wedges are cut into the surface to create a prismlike effect, so that the glass will “reflect, refract and transmit light in various spectrums,” according to the architect, without blinding passers-by or drivers. Prismatic glass has been used as a decorative feature for more than a century in lamps and storefronts.

But the World Trade Center plan was unprecedented, at least in the United States, said William M. Yanek, executive vice president of the Glass Association of North America in Topeka, Kan. “To our knowledge prismatic glass has never been used on a building of this magnitude,” he said. Above the base, workers are installing more than 12,000 more traditional, ultraclear glass panels to the building’s steel frame.

so i believe its purely decorative and to help in a blast too...
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