Civil engineering of khorramabad
مرجع دانلود مهندسی عمران
دوشنبه یازدهم آذر 1387
Lord Foster’s Tower 2
Lord Rogers’s Tower 3 at 175 Greenwich Street, between Dey and
Cortlandt Streets, is a flat-topped building with asymmetrical
shoulders and the diagonal beams of the exoskeletal framework seem to
echo the rooftop of Tower 2. The building will rise 1,155 feet,
reaching the higher pinnacle at the antennas. It will have five trading
floors, three retail floors, nine mechanical floors and 54 floors of
offices, for a total of 71 stories.
Cortlandt Street will be kept open between Tower 3 and Tower 4. The Port Authority had originally proposed constructing a shopping arcade that would join the buildings’ bases, but city officials objected to the loss of an open corridor between the memorial and the rest of Lower Manhattan.
Mr. Maki’s Tower 4 at 150 Greenwich Street, between Cortlandt and Liberty Streets, is the most understated of the lot, with a sheer curtain wall. The 61-story tower rises for most of its height as a parallelogram and then, nearly 700 feet in the sky, it becomes a trapezoid, reaching an overall height of 946 feet, with no antennas. The upper part of the facade inclines toward the towers to the north and is meant as a unifying gesture.
They are expected to be completed by 2012Cortlandt Street will be kept open between Tower 3 and Tower 4. The Port Authority had originally proposed constructing a shopping arcade that would join the buildings’ bases, but city officials objected to the loss of an open corridor between the memorial and the rest of Lower Manhattan.
Mr. Maki’s Tower 4 at 150 Greenwich Street, between Cortlandt and Liberty Streets, is the most understated of the lot, with a sheer curtain wall. The 61-story tower rises for most of its height as a parallelogram and then, nearly 700 feet in the sky, it becomes a trapezoid, reaching an overall height of 946 feet, with no antennas. The upper part of the facade inclines toward the towers to the north and is meant as a unifying gesture.
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