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Old February 12th, 2008, 06:00 PM   #1601
brisavoine
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New render of D2 Tower (see post #1557):

image hosted on flickr


Article about D2 Tower for those who can read French (don't have time to translate today):
Quote:
La Défense : le galbe harmonieux de la tour D2

Les Echos
12 février 2008

Coincée dans un bouquet de tours, la future D2 trouve son identité dans une volumétrie arrondie et une structure en losange. Elle participe au programme de renouveau urbain lancé par l'Epad.

Nom de code D2 : D pour la Défense, 2 pour les promoteurs Bouygues Immobilier et Sogeprom, réunis sur l'opération. La tour D2, dévoilée dans la plus grande discrétion, n'a pas encore trouvé d'appellation, mais son projet se profile déjà à l'horizon. Elle n'attend que le permis de construire, attendu dans l'année, pour prendre la place de l'immeuble aujourd'hui occupé par Veritas, le long du boulevard circulaire sur la commune de Courbevoie, entre la tour Manhattan en aval, l'ancienne tour EDF en amont et la future tour Air2 qui remplacera la tour Aurore du côté du parvis de la Défense. Son maître d'ouvrage, Sogecap, compagnie d'assurance-vie de la Société Générale qui, en 2007, a effectué 300 millions d'euros d'investissement en fonds propres sans effet de levier en France, poursuit ainsi sa politique immobilière à long terme.

Propriétaire du terrain et de l'immeuble depuis dix ans, elle participe de fait au programme de renouveau urbain lancé par l'Etablissement public de la Défense (Epad) et s'engage dans une entreprise de démolition-reconstruction ambitieuse. Le projet aujourd'hui choisi est issu d'un concours entre cinq agences parisiennes : Architecture Studio, Jacques Ferrier, Manuelle Gautrand, Claude Vasconi et l'agence Anthony Béchu avec Tom Sheehan pour associé. Celle-ci vient d'être déclarée lauréate.

Objet lisible

La proposition a séduit par sa simplicité, qui fait de la tour un objet parfaitement lisible dans le périmètre de la Défense. L'architecte André Bruyère (1912-1998), personnalité singulière, avait en son temps, dans les années 1970, imaginé un gratte-ciel de 125 mètres en forme d'oeuf, jamais réalisé. La tour D2, qui atteindra quant à elle 160 mètres de haut, explore à sa manière cette même idée d'un volume unitaire établi sur un plan également subtil qu'Anthony Béchu définit « comme un avocat qui pousserait avec son noyau ». L'épure est matérialisée par une structure extérieure en acier, ou exostructure, qui sertit le volume de pied en cap d'une trame en losange.

La façade en verre disposée en retrait dans les niveaux bas permet de définir un généreux promenoir sous arcades, en continuité de la place urbaine qui vient épouser la morphologie du terrain et assure une liaison sans rupture entre le niveau inférieur du boulevard circulaire, côté Courbevoie, et l'esplanade de la Défense raccordée par une passerelle. « Le traitement de ce pied de tour afin de ressouder la ville et la dalle était un des principaux objectifs du concours », fait valoir Tom Sheehan. A l'intérieur, la tour développe 37 niveaux pour une surface utile totale de 50.000 mètres carrés, avec des plateaux de bureaux offrant en étage courant une superficie de quelque 1.500 mètres carrés.

L'investissement, en valeur marché, est estimé à au moins 500 millions d'euros. « Sur le marché propre de l'immobilier, cette surface correspond à environ 3.600 postes de travail, ce qui prédispose la tour à être occupée par un seul utilisateur et ainsi fédérer une identité, notamment pour un siège d'entreprise », relève Eric Mazoyer, directeur général délégué de Bouygues Immobilier. L'exostructure, qui reprend environ 50 % des charges verticales et du contreventement, permet de surcroît de libérer les plateaux de tout point porteur afin d'être indifféremment utilisés en open-spaces ou en bureaux cloisonnés selon les besoins futurs. L'absence d'angle est également un atout de cette configuration. Les losanges de la maille englobent quatre niveaux sur une largeur de 5,60 mètres correspondant à une trame tertiaire classique.

La structure tubulaire capotée de métal varie en épaisseur suivant la hauteur, passant de 1,20 mètre en pied à 40 centimètres au faîte. « Solide et bien ancrée en base, la structure s'effile vers le sommet, note Anthony Béchu, et la section dégressive délivre une économie de matière et une transparence maximale. » L'objectif d'un immeuble économe en énergie, avec une consommation prévisionnelle de 80 kW/h/m2/an, est ainsi réalisé par un excellent ratio enveloppe/surface utile, mais aussi par l'option architecturale qui prévoit une ponctuation verticale de jardins décrits par les architectes comme « des poches végétales au fonctionnement bioclimatique ».

Effet pointilliste

Les études en cours permettront de mettre en oeuvre le meilleur dispositif de refroidissement dans une optique de maîtrise énergétique. Egalement à l'étude, l'emploi de LEDs (« light emitting diodes »), consommant 1/10e de l'énergie de leurs homologues à incandescence, devrait contribuer à l'éclairage tant à l'intérieur qu'à l'extérieur, notamment en vision nocturne pour procurer un effet pointilliste « comparable à celui mis en place sur la tour Eiffel ». La tour D2 se distingue ainsi par sa grande cohérence conceptuelle, son dessin se prolongeant jusque dans les niveaux supérieurs conçus pour accueillir des espaces club et des salons de conférences dans un grand dôme en verre développé sous les arches de la structure. « Sa forme galbée et fluide abolit les vis-à-vis et ouvre des vues sur la ville et l'esplanade », commentent les architectes. Montée en graine, la tour D2 esquive de ses rondeurs tout conflit avec ses anguleuses et rigides voisines.

FLORENCE ACCORSI
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Old February 12th, 2008, 09:22 PM   #1602
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seems better with this geometry
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Old February 12th, 2008, 11:23 PM   #1603
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IMO, La Défense should remain square-based.
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Old February 12th, 2008, 11:30 PM   #1604
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Very interesting..truly.

Paris is a lot criticized for immobilism but certain projects give it the international standard updated!!

I like thisperspective with the beautiful Arche facing old Arc!!!
I think a few towers added would make la defense a very nice complement of paris panorama!!

very interesting but i wait for 400 m towers projetcs like in other international cities.

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Old February 21st, 2008, 10:32 AM   #1605
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Just a few questions:

* Tour AIG is listed as "under reconstruction" by Emporis. I don't know much about that renovation project.
* The Tour Initiale should be completely renovated in the upcoming years of the final stage of the large-scale redevelopment of La Defense. Should it be renovated anyway?
* The Tour Manhattan should increase its height to 150 metres and its facade should remain the samn
* I have serious doubts about the redevelopment of Tour Descartes. It is supposed to recieve a restructuration, but I do not want its appearance altered in any way. What should be done to the Descartes building?
* The AGF Athena building is slated for a demolition/reconstruction by the map. why don't they just increase the building's height to 50-floors? But in order to do so, the top of the building would have to be removed and replaced once it reaches that height.
* I still think we need to increase the height of the under-construction Praetorium to 100 metres. Why does it rise only 35 metres?
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Old February 22nd, 2008, 03:31 AM   #1606
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Wow, the pic of the future skyline looks stunning! That will then definitely be the best skyline in Europe, without any doubt. I would even go that far and claiming that it will be the most beautiful skyline in the world. Well done, Paris! It really pays to concentrate skyscrapers in one area. That's what spoils it for London and Frankfurt. This skyline will make an amazing impression, though! For God's sake, now it's really enough beauty for Paris, it's just not fair!!

Last edited by kyler; February 22nd, 2008 at 03:40 AM.
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Old February 22nd, 2008, 03:52 AM   #1607
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Quote:
Originally Posted by Jim856796 View Post
Just a few questions:

* Tour AIG is listed as "under reconstruction" by Emporis. I don't know much about that renovation project.
I didn't even knew that it was in reconstruction and I really doubt of it.
I was in La Defense the last week.

Tour AGI is a ugly white tower with the sun reflection.



Quote:
* The Tour Initiale should be completely renovated in the upcoming years of the final stage of the large-scale redevelopment of La Defense. Should it be renovated anyway?
I don't think
It was already fully renovated few years ago.

Quote:
* The Tour Manhattan should increase its height to 150 metres and its facade should remain the samn
As I know the extention would have a different design but not the existing part.

Quote:
* I have serious doubts about the redevelopment of Tour Descartes. It is supposed to recieve a restructuration, but I do not want its appearance altered in any way. What should be done to the Descartes building?
There is some rumor about but I don't know anything.

Quote:
* The AGF Athena building is slated for a demolition/reconstruction by the map. why don't they just increase the building's height to 50-floors? But in order to do so, the top of the building would have to be removed and replaced once it reaches that height.
They would increased the height, it should become a 50 floors hotel.
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Old February 22nd, 2008, 04:50 AM   #1608
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The Building/site will be turned into a hotel? Why that?
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I honestly think all development projects must be sustainable and futureproof.

You support the good projects... and oppose the bad.
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Old February 29th, 2008, 09:33 AM   #1609
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Is the asbestos in the Montparnasse Tower being removed within a 3-year period or a 10-year period?
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Old February 29th, 2008, 10:01 AM   #1610
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The tower is in renovation due at this problem
Most of asbestos have been removed.
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Old March 7th, 2008, 01:13 AM   #1611
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Renovation for Gallieni 1(78m) in Bagnolet in eastern suburb near Montreuil and Mercuriales.




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Old March 7th, 2008, 09:31 PM   #1612
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Some recent pictures of work underway at the Axa Tower in La Défense. Axa Tower is currently undergoing reconstruction and heightening from its current 159m (522 ft) to its future 225m (738 ft) at roof height and 240m (787 ft) including the new mast.







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Old March 7th, 2008, 09:31 PM   #1613
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Large view:

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Old March 11th, 2008, 09:43 PM   #1614
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New renders of La Defense









http://tour-signal-ladefense.com/fr/pr2.html

http://www.ladefense.fr/

Last edited by Sinhasan; March 11th, 2008 at 10:05 PM.
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Old March 11th, 2008, 10:42 PM   #1615
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First images: Design for Eiffel Tower visitor platform
11 March, 2008

By Thomas Lane

Sereno Architects doubles visitor capacity at top of Paris' tower as part of 120th anniversary celebrations

These are the first images of a platform to increase the amount of space for visitors at the top of the Eiffel Tower. It has been designed by French firm Sereno Architects as a competition entry being held by tower operator, Société Nouvelle d'exploitation de la Tour Eiffel.

The operator wants to build a platform as part of the Eiffel Tower's 120th anniversary celebrations to help get rid of the huge queues of visitors wanting to go up to the top of the tower.

Sereno Architects design uses a carbon fibre and Kevlar composite to double the amount of space at the top of the tower without adding too much weight.

The architect says the structure is temporary but as the Eiffel Tower was originally going to be taken down after a year the platform could end up becoming permanent.





http://www.building.co.uk/story.asp?...de=3108430&c=1
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Old March 12th, 2008, 03:09 AM   #1616
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Pictures of Granite and its new bridge.













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Old March 12th, 2008, 08:19 PM   #1617
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Please note Signal's not visible here.
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Old March 12th, 2008, 10:07 PM   #1618
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Tour Signals Final Five (design competition) +/-300m!

Quote:
Originally Posted by Matthieu View Post
Please note Signal's not visible here.
Another design competition is underway, this time however it isn't for a space in Dubai but instead in France.

The competition is to design a new tower called Tour Signal which will be located on a site in La Defense in Paris... somewhere. So far a definite site hasn't been named although the towers do appear to have their own individual locations. Dozens of world renowned architects submitted plans but these have now been whittled down to a final five.

First up we have the tallest of the skyscrapers to be in the running, designed by French architect Jacques Ferrier it would stand at 310 metres. Sat in a tree lined plaza the tower would essentially be a large 'H', in places the glass facades are angled which gives the tower a modern look and about a quarter of the way up the towers are joined by a horizontal space which will add extra room for offices, apartments or shops.

Near the top of the structure two sky bridges span the gap between offering not only a handy walkway but also some spectacular views of the surrounding area. It's a deliberately ambitious design aimed at being the tallest residential building in Western Europe by the Russian developer, Hermitage.

Next we have an entry from Brit firm Foster and Partners, who's design uses a simple shape but enlivens the project with its distinctive façade. Standing at 297 metres the tower is a simple cylinder, is striking copper coloured façade wraps around the tower and features Fosters famous diagrid pattern which is highlighted by an almost clear section of façade snaking its way around and up the tower.

Hot on Fosters heels comes Libeskind with his 255 metre tall, jagged and geometrical tower. Starting from a triangular appearing podium the tower works its way skyward with angled almost diamond cut glass facades.

Approximately half way up a triangular growth seems to attach itself to the design, the ways the tower is angled almost makes it look like it is trying to take a step back and see what the hell has got stuck to it. It continues upwards to a pointed peak with a touch of the planned Generali tower about it.

Our fourth entrant is Wilmotte with a 284 metre offering. This tower consists of three blades, the central one appearing almost straight whilst the remaining two fan away from it. Not to detract from its form or perhaps just resisting the urge to go completely over the top the facades are neutral using glass along with concrete. Near the top of the tower it appears the blades are linked with a sky bridge.

And finally we end with Nouvels design which is possibly the laziest of all of the designs. The astute may notice that it looks suspiciously like the Tour Phare design that was submitted and not chosen in another competition, there's a reason for that...it's because it is the same design.

Not one to be put of by rejection Nouvel has opted to submit a design everyone has seen and rejected, what thinking lies behind this is anyone's guess but it's far from certain it will suddenly be loved a second time round.

Jacques Ferrier


Foster and Partners


Studio Daniel Libeskind


Wilmotte


Jean Nouvel Ateliers


source:skycrapernews
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Old March 12th, 2008, 11:25 PM   #1619
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None of these renders appealed me .i think that la Défense needs a new landmark project and these towers have nothing that remind me of the French touch
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Old March 12th, 2008, 11:44 PM   #1620
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More pics here

http://www.building.co.uk/story.asp?...de=3108637&c=1
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