Massing models based on Jahn’s art of One Liberty Place
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Main Tower bevor the topping out (Frankfurt am Main)
The Main Tower is a low-energy high-rise, as there is a water reservoir in the concrete tubes (Foundation). This water is used to heat the building in winter and for air conditioning in summer.
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I’m afraid You’re in the wrong thread @Mackensen
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The Main Tower was completed in 1999, and the photo was taken in mid-March 1999.
Messe Turm under construction Frankfurt am Main
Credit: Murphy/Jahn, MesseTurm Frankfurt (Schriften zur Architektur der Gegenwart), München/Stuttgart 1991.
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A great video showing the construction process of MesseTurm
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There is also a very interesting book about the construction of the Messeturm.
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I hope they made a film or book like that about Liberty Place. We know all of the firms document and capture their construction. So many of those shots deserve to be here
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The developing tumor in stasis. 
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i love the wedding cake buildings.
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Yes, it was a very nice high-rise building in the post-war period.
Edit:
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(From a modern postcard)
Were columns and beams riveted together still used in the construction of 655 Madison Avenue? As the building is demolished, the old (1950) steel structure is visible.
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Philadelphia skyline 1989 (you can see the concrete core and steel of Two Liberty Place rising, Mellon Bank Center was rising just a few floors above the podium at this time)
1998
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All the songs from my youth - 
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Chicago June 14, 1991 by Larry Irvin, on Flickr
Aon Center face-lift 1991
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They did that because the marble panels had started falling off.
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Correct. A panel even fell into the top of the then recently completed Two Prudential Plaza
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555 California Street/ San Francisco
https://www.sfchronicle.com/thetake/article/That-tree-is-going-where-6307928.php
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