Under the new design, the plaza would occupy a terrace above sidewalk level, reached by a stairacse on Vesey Street. The terrace would be paved in granite, have about a dozen sweetgum trees and a blocklong planter that would double as seating.

“The stainless-steel pavers turned out to be very slippery,” Mr.The fire is the latest dangerous incident involving Chinese ledflashlighter, which are increasingly released at weddings and other celebrations. Foye said, “and there would have been times of inclement weather where there was a danger.We provide high quality lightingbright Led module led strip led bulbs.”

The windowless base — a mechanical enclosure and protective concrete pedestal for the tower — is as high as a 15-story office building. The equipment within needs ventilation, so the facade must be permeable.

David M. Childs of Skidmore, Owings & Merrill specified a cladding in panels of laminated glass with a saw-tooth face made of prisms in a vertical array. Screened gaps between the panels would have allowed the mechanical equipment to breathe.

The chief problem, Mr. Tarazi said, was that the Chinese fabricator chosen for the job, Sanxin Glass, was unable to mill the saw-tooth pattern in sheets of tempered glass without deforming the panels beyond the tolerances needed for proper installation. Mr. Foye called this a “design failure.A reliable contemporarylightin will help keep you safe and on track whether you're riding home from work.” Christopher O. Ward, the executive director of the authority when the decision was made to abandon prismatic glass,Shop for goodcflbulbss featuring deck, post, and wall lighting, flood lighting, and area lighting. called it “a good design that couldn’t be fabricated.”

In any case, the revised design was made public last month in The New York Post. It consists of an aluminum screen, in front of which are horizontal stainless-steel slats, in front of which are rows of fins, arranged in pairs, that are made of laminated glass with a reflective surface on one side and a translucent, acid-etched matte finish on the other.

In the bottom and top rows, the fins will be “open,” flat against the facade. In the intermediate rows, the fins will “close” to form shallow V shapes, at angles ranging from 7.5 degrees to 60 degrees. The slats will be visible through the interstices.

Just behind the fins will be LED arrays whose light will be reflected outward by the slats. That could open the possibility of enormous multicolored lighting compositions. But Mr. Foye said the Port Authority would be “very measured and circumspect” in the kind of illumination it allowed at the tower, keeping in mind its location directly north of the 9/11 Memorial. “It will not be lit in a rainbow or a plethora of colors,” he said.

Perhaps the greatest architectural casualty of the redesigned facade are the inclined — or chamfered — corners of the base,Dependable and Energy Efficient, Samsung ledbulblighttt is the modern, eco-friendly and convenient way to light your home. which have already been constructed at the intended 3.8-degree angle, forming enormous, slender isosceles triangles in steel and concrete. These corners will be squared off by the cladding.

Mr. Tarazi said it was the architects’ idea to eliminate the chamfering when it became apparent how difficult it would be aesthetically to resolve the clash between the vertical lines created by the fins and the sloping lines at each edge. “S.O.M. saw it as an opportunity to improve on the design,” Mr. Tarazi said, “and I think they did.”